/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/Problem13_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 22:43:43,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 22:43:43,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 22:43:43,627 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 22:43:43,667 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 22:43:43,690 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 22:43:43,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 22:43:43,691 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 22:43:43,691 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 22:43:43,691 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 22:43:43,691 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 22:43:43,692 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 22:43:43,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 22:43:43,692 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 22:43:43,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 22:43:43,692 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 22:43:43,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 22:43:43,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 22:43:43,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 22:43:43,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 22:43:43,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 22:43:43,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 22:43:43,693 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 22:43:43,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 22:43:43,693 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 22:43:43,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 22:43:43,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 22:43:43,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 22:43:43,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 22:43:43,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:43:43,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 22:43:43,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 22:43:43,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 22:43:43,694 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 22:43:43,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 22:43:43,694 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 22:43:43,694 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 22:43:43,694 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 22:43:43,695 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 22:43:43,695 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 22:43:43,695 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 22:43:43,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 22:43:43,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 22:43:43,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 22:43:43,882 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 22:43:43,882 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 22:43:43,883 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label32.c [2023-04-01 22:43:44,762 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 22:43:45,087 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 22:43:45,087 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label32.c [2023-04-01 22:43:45,113 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5953b688c/1c6ef72548e846e493ba91cd8e2d0153/FLAG0d4ee6e41 [2023-04-01 22:43:45,127 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5953b688c/1c6ef72548e846e493ba91cd8e2d0153 [2023-04-01 22:43:45,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 22:43:45,130 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 22:43:45,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 22:43:45,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 22:43:45,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 22:43:45,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:43:45" (1/1) ... [2023-04-01 22:43:45,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b2643cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:43:45, skipping insertion in model container [2023-04-01 22:43:45,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:43:45" (1/1) ... [2023-04-01 22:43:45,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 22:43:45,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 22:43:45,438 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/Problem13_label32.c[1533,1546] [2023-04-01 22:43:46,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:43:46,110 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 22:43:46,123 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/Problem13_label32.c[1533,1546] [2023-04-01 22:43:46,478 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:43:46,497 INFO L208 MainTranslator]: Completed translation [2023-04-01 22:43:46,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:43:46 WrapperNode [2023-04-01 22:43:46,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 22:43:46,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 22:43:46,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 22:43:46,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 22:43:46,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:43:46" (1/1) ... [2023-04-01 22:43:46,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:43:46" (1/1) ... [2023-04-01 22:43:46,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:43:46" (1/1) ... [2023-04-01 22:43:46,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:43:46" (1/1) ... [2023-04-01 22:43:46,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:43:46" (1/1) ... [2023-04-01 22:43:46,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:43:46" (1/1) ... [2023-04-01 22:43:46,689 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:43:46" (1/1) ... [2023-04-01 22:43:46,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:43:46" (1/1) ... [2023-04-01 22:43:46,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 22:43:46,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 22:43:46,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 22:43:46,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 22:43:46,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:43:46" (1/1) ... [2023-04-01 22:43:46,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:43:46,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:43:46,815 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 22:43:46,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 22:43:46,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 22:43:46,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 22:43:46,846 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 22:43:46,846 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 22:43:46,846 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 22:43:46,847 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 22:43:46,847 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 22:43:46,847 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 22:43:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 22:43:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 22:43:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 22:43:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 22:43:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 22:43:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 22:43:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 22:43:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 22:43:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 22:43:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 22:43:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 22:43:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 22:43:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 22:43:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 22:43:46,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 22:43:46,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 22:43:46,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 22:43:46,917 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 22:43:46,919 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 22:43:50,371 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 22:43:50,387 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 22:43:50,387 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 22:43:50,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:43:50 BoogieIcfgContainer [2023-04-01 22:43:50,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 22:43:50,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 22:43:50,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 22:43:50,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 22:43:50,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:43:45" (1/3) ... [2023-04-01 22:43:50,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62aac65a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:43:50, skipping insertion in model container [2023-04-01 22:43:50,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:43:46" (2/3) ... [2023-04-01 22:43:50,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62aac65a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:43:50, skipping insertion in model container [2023-04-01 22:43:50,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:43:50" (3/3) ... [2023-04-01 22:43:50,398 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label32.c [2023-04-01 22:43:50,410 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 22:43:50,410 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 22:43:50,467 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 22:43:50,471 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;@307f92b9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 22:43:50,471 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 22:43:50,477 INFO L276 IsEmpty]: Start isEmpty. Operand has 1119 states, 1105 states have (on average 1.820814479638009) internal successors, (2012), 1106 states have internal predecessors, (2012), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 22:43:50,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-04-01 22:43:50,482 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:43:50,483 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:43:50,483 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:43:50,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:43:50,487 INFO L85 PathProgramCache]: Analyzing trace with hash 440498961, now seen corresponding path program 1 times [2023-04-01 22:43:50,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:43:50,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846178104] [2023-04-01 22:43:50,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:43:50,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:43:50,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:50,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:43:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:50,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:43:50,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:43:50,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846178104] [2023-04-01 22:43:50,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846178104] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:43:50,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:43:50,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 22:43:50,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419932132] [2023-04-01 22:43:50,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:43:50,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:43:50,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:43:50,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:43:50,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:43:50,834 INFO L87 Difference]: Start difference. First operand has 1119 states, 1105 states have (on average 1.820814479638009) internal successors, (2012), 1106 states have internal predecessors, (2012), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 22:43:58,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:43:58,173 INFO L93 Difference]: Finished difference Result 3977 states and 7430 transitions. [2023-04-01 22:43:58,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 22:43:58,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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 14 [2023-04-01 22:43:58,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:43:58,195 INFO L225 Difference]: With dead ends: 3977 [2023-04-01 22:43:58,196 INFO L226 Difference]: Without dead ends: 2790 [2023-04-01 22:43:58,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:43:58,209 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 5756 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 5269 mSolverCounterSat, 2506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5756 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 7775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2506 IncrementalHoareTripleChecker+Valid, 5269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:43:58,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5756 Valid, 355 Invalid, 7775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2506 Valid, 5269 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-04-01 22:43:58,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2023-04-01 22:43:58,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 2758. [2023-04-01 22:43:58,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2758 states, 2718 states have (on average 1.5997056659308315) internal successors, (4348), 2721 states have internal predecessors, (4348), 14 states have call successors, (14), 14 states have call predecessors, (14), 25 states have return successors, (53), 22 states have call predecessors, (53), 13 states have call successors, (53) [2023-04-01 22:43:58,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2758 states to 2758 states and 4415 transitions. [2023-04-01 22:43:58,328 INFO L78 Accepts]: Start accepts. Automaton has 2758 states and 4415 transitions. Word has length 14 [2023-04-01 22:43:58,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:43:58,328 INFO L495 AbstractCegarLoop]: Abstraction has 2758 states and 4415 transitions. [2023-04-01 22:43:58,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 22:43:58,328 INFO L276 IsEmpty]: Start isEmpty. Operand 2758 states and 4415 transitions. [2023-04-01 22:43:58,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-04-01 22:43:58,331 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:43:58,332 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:43:58,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 22:43:58,332 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:43:58,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:43:58,333 INFO L85 PathProgramCache]: Analyzing trace with hash 694894305, now seen corresponding path program 1 times [2023-04-01 22:43:58,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:43:58,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975137349] [2023-04-01 22:43:58,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:43:58,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:43:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:58,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:43:58,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:58,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:43:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:58,789 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:43:58,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:43:58,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975137349] [2023-04-01 22:43:58,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975137349] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:43:58,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:43:58,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:43:58,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630872934] [2023-04-01 22:43:58,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:43:58,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:43:58,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:43:58,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:43:58,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:43:58,795 INFO L87 Difference]: Start difference. First operand 2758 states and 4415 transitions. Second operand has 8 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:44:06,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:44:06,835 INFO L93 Difference]: Finished difference Result 10523 states and 17316 transitions. [2023-04-01 22:44:06,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:44:06,836 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 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 123 [2023-04-01 22:44:06,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:44:06,870 INFO L225 Difference]: With dead ends: 10523 [2023-04-01 22:44:06,870 INFO L226 Difference]: Without dead ends: 7771 [2023-04-01 22:44:06,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:44:06,884 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 4142 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 9974 mSolverCounterSat, 1776 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4142 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 11750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1776 IncrementalHoareTripleChecker+Valid, 9974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:44:06,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4142 Valid, 802 Invalid, 11750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1776 Valid, 9974 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2023-04-01 22:44:06,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7771 states. [2023-04-01 22:44:07,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7771 to 7754. [2023-04-01 22:44:07,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7754 states, 7602 states have (on average 1.3727966324651408) internal successors, (10436), 7623 states have internal predecessors, (10436), 38 states have call successors, (38), 38 states have call predecessors, (38), 113 states have return successors, (444), 92 states have call predecessors, (444), 37 states have call successors, (444) [2023-04-01 22:44:07,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7754 states to 7754 states and 10918 transitions. [2023-04-01 22:44:07,053 INFO L78 Accepts]: Start accepts. Automaton has 7754 states and 10918 transitions. Word has length 123 [2023-04-01 22:44:07,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:44:07,054 INFO L495 AbstractCegarLoop]: Abstraction has 7754 states and 10918 transitions. [2023-04-01 22:44:07,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:44:07,055 INFO L276 IsEmpty]: Start isEmpty. Operand 7754 states and 10918 transitions. [2023-04-01 22:44:07,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-04-01 22:44:07,062 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:44:07,062 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:44:07,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 22:44:07,062 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:44:07,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:44:07,063 INFO L85 PathProgramCache]: Analyzing trace with hash -909217576, now seen corresponding path program 1 times [2023-04-01 22:44:07,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:44:07,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835389633] [2023-04-01 22:44:07,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:07,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:44:07,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:07,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:44:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:07,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:44:07,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:07,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-04-01 22:44:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:07,434 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 22:44:07,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:44:07,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835389633] [2023-04-01 22:44:07,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835389633] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:44:07,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578726894] [2023-04-01 22:44:07,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:07,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:44:07,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:44:07,438 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:44:07,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 22:44:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:07,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 22:44:07,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:44:07,700 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-01 22:44:07,700 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:44:07,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578726894] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:44:07,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:44:07,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 9 [2023-04-01 22:44:07,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174035972] [2023-04-01 22:44:07,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:44:07,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:44:07,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:44:07,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:44:07,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-04-01 22:44:07,702 INFO L87 Difference]: Start difference. First operand 7754 states and 10918 transitions. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 4 states have internal predecessors, (172), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 22:44:12,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:44:12,146 INFO L93 Difference]: Finished difference Result 22466 states and 32893 transitions. [2023-04-01 22:44:12,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 22:44:12,147 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 4 states have internal predecessors, (172), 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 186 [2023-04-01 22:44:12,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:44:12,290 INFO L225 Difference]: With dead ends: 22466 [2023-04-01 22:44:12,290 INFO L226 Difference]: Without dead ends: 14718 [2023-04-01 22:44:12,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:44:12,306 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 3131 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 4923 mSolverCounterSat, 1448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3131 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 6371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1448 IncrementalHoareTripleChecker+Valid, 4923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:44:12,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3131 Valid, 638 Invalid, 6371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1448 Valid, 4923 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-04-01 22:44:12,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14718 states. [2023-04-01 22:44:12,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14718 to 14577. [2023-04-01 22:44:12,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14577 states, 14222 states have (on average 1.269863591618619) internal successors, (18060), 14289 states have internal predecessors, (18060), 70 states have call successors, (70), 70 states have call predecessors, (70), 284 states have return successors, (1535), 217 states have call predecessors, (1535), 69 states have call successors, (1535) [2023-04-01 22:44:12,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14577 states to 14577 states and 19665 transitions. [2023-04-01 22:44:12,649 INFO L78 Accepts]: Start accepts. Automaton has 14577 states and 19665 transitions. Word has length 186 [2023-04-01 22:44:12,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:44:12,650 INFO L495 AbstractCegarLoop]: Abstraction has 14577 states and 19665 transitions. [2023-04-01 22:44:12,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 4 states have internal predecessors, (172), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 22:44:12,651 INFO L276 IsEmpty]: Start isEmpty. Operand 14577 states and 19665 transitions. [2023-04-01 22:44:12,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-04-01 22:44:12,653 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:44:12,653 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:44:12,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 22:44:12,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:44:12,858 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:44:12,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:44:12,859 INFO L85 PathProgramCache]: Analyzing trace with hash -348095359, now seen corresponding path program 1 times [2023-04-01 22:44:12,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:44:12,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273343084] [2023-04-01 22:44:12,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:12,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:44:12,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:13,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:44:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:13,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:44:13,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:13,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-01 22:44:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:13,159 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2023-04-01 22:44:13,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:44:13,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273343084] [2023-04-01 22:44:13,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273343084] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:44:13,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931931728] [2023-04-01 22:44:13,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:13,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:44:13,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:44:13,163 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:44:13,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 22:44:13,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:13,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:44:13,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:44:13,281 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-04-01 22:44:13,281 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:44:13,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931931728] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:44:13,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:44:13,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:44:13,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088235009] [2023-04-01 22:44:13,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:44:13,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:44:13,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:44:13,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:44:13,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:44:13,282 INFO L87 Difference]: Start difference. First operand 14577 states and 19665 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:44:15,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:44:15,835 INFO L93 Difference]: Finished difference Result 29149 states and 39437 transitions. [2023-04-01 22:44:15,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:44:15,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 223 [2023-04-01 22:44:15,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:44:15,868 INFO L225 Difference]: With dead ends: 29149 [2023-04-01 22:44:15,868 INFO L226 Difference]: Without dead ends: 14578 [2023-04-01 22:44:15,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:44:15,895 INFO L413 NwaCegarLoop]: 1414 mSDtfsCounter, 1220 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 2460 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 2908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 2460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:44:15,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 1520 Invalid, 2908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 2460 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-01 22:44:15,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14578 states. [2023-04-01 22:44:16,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14578 to 12971. [2023-04-01 22:44:16,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12971 states, 12632 states have (on average 1.2022640911969602) internal successors, (15187), 12699 states have internal predecessors, (15187), 62 states have call successors, (62), 62 states have call predecessors, (62), 276 states have return successors, (1055), 209 states have call predecessors, (1055), 61 states have call successors, (1055) [2023-04-01 22:44:16,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12971 states to 12971 states and 16304 transitions. [2023-04-01 22:44:16,107 INFO L78 Accepts]: Start accepts. Automaton has 12971 states and 16304 transitions. Word has length 223 [2023-04-01 22:44:16,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:44:16,108 INFO L495 AbstractCegarLoop]: Abstraction has 12971 states and 16304 transitions. [2023-04-01 22:44:16,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:44:16,108 INFO L276 IsEmpty]: Start isEmpty. Operand 12971 states and 16304 transitions. [2023-04-01 22:44:16,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2023-04-01 22:44:16,112 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:44:16,112 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:44:16,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 22:44:16,317 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 22:44:16,318 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:44:16,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:44:16,318 INFO L85 PathProgramCache]: Analyzing trace with hash -524864532, now seen corresponding path program 1 times [2023-04-01 22:44:16,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:44:16,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576782688] [2023-04-01 22:44:16,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:16,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:44:16,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:16,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:44:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:16,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:44:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:16,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-01 22:44:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:16,749 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:44:16,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:44:16,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576782688] [2023-04-01 22:44:16,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576782688] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:44:16,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023977796] [2023-04-01 22:44:16,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:16,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:44:16,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:44:16,753 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:44:16,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 22:44:16,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:16,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:44:16,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:44:17,093 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:44:17,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:44:17,563 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:44:17,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023977796] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:44:17,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:44:17,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 22:44:17,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345653157] [2023-04-01 22:44:17,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:44:17,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 22:44:17,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:44:17,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 22:44:17,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:44:17,567 INFO L87 Difference]: Start difference. First operand 12971 states and 16304 transitions. Second operand has 12 states, 12 states have (on average 53.333333333333336) internal successors, (640), 10 states have internal predecessors, (640), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 22:44:26,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:44:26,884 INFO L93 Difference]: Finished difference Result 34442 states and 45629 transitions. [2023-04-01 22:44:26,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 22:44:26,884 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 53.333333333333336) internal successors, (640), 10 states have internal predecessors, (640), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 287 [2023-04-01 22:44:26,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:44:26,934 INFO L225 Difference]: With dead ends: 34442 [2023-04-01 22:44:26,934 INFO L226 Difference]: Without dead ends: 21477 [2023-04-01 22:44:26,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 603 GetRequests, 578 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=467, Unknown=0, NotChecked=0, Total=650 [2023-04-01 22:44:26,956 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 8504 mSDsluCounter, 924 mSDsCounter, 0 mSdLazyCounter, 11931 mSolverCounterSat, 3131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8504 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 15062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3131 IncrementalHoareTripleChecker+Valid, 11931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:44:26,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8504 Valid, 1162 Invalid, 15062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3131 Valid, 11931 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2023-04-01 22:44:26,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21477 states. [2023-04-01 22:44:27,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21477 to 21330. [2023-04-01 22:44:27,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21330 states, 20501 states have (on average 1.1634554411979903) internal successors, (23852), 20728 states have internal predecessors, (23852), 98 states have call successors, (98), 98 states have call predecessors, (98), 730 states have return successors, (3250), 503 states have call predecessors, (3250), 97 states have call successors, (3250) [2023-04-01 22:44:27,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21330 states to 21330 states and 27200 transitions. [2023-04-01 22:44:27,306 INFO L78 Accepts]: Start accepts. Automaton has 21330 states and 27200 transitions. Word has length 287 [2023-04-01 22:44:27,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:44:27,307 INFO L495 AbstractCegarLoop]: Abstraction has 21330 states and 27200 transitions. [2023-04-01 22:44:27,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 53.333333333333336) internal successors, (640), 10 states have internal predecessors, (640), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 22:44:27,307 INFO L276 IsEmpty]: Start isEmpty. Operand 21330 states and 27200 transitions. [2023-04-01 22:44:27,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-04-01 22:44:27,311 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:44:27,311 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:44:27,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 22:44:27,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:44:27,516 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:44:27,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:44:27,517 INFO L85 PathProgramCache]: Analyzing trace with hash -721166088, now seen corresponding path program 1 times [2023-04-01 22:44:27,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:44:27,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762073192] [2023-04-01 22:44:27,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:27,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:44:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:27,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:44:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:27,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:44:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:27,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-01 22:44:27,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:27,797 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-04-01 22:44:27,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:44:27,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762073192] [2023-04-01 22:44:27,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762073192] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:44:27,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811337776] [2023-04-01 22:44:27,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:27,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:44:27,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:44:27,800 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:44:27,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 22:44:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:27,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-01 22:44:27,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:44:27,928 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-01 22:44:27,928 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:44:27,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811337776] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:44:27,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:44:27,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-04-01 22:44:27,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305553932] [2023-04-01 22:44:27,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:44:27,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:44:27,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:44:27,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:44:27,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:44:27,930 INFO L87 Difference]: Start difference. First operand 21330 states and 27200 transitions. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 22:44:31,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:44:31,261 INFO L93 Difference]: Finished difference Result 61381 states and 80445 transitions. [2023-04-01 22:44:31,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:44:31,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 291 [2023-04-01 22:44:31,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:44:31,355 INFO L225 Difference]: With dead ends: 61381 [2023-04-01 22:44:31,355 INFO L226 Difference]: Without dead ends: 39188 [2023-04-01 22:44:31,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 296 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:44:31,391 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 1002 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 2642 mSolverCounterSat, 760 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 1755 SdHoareTripleChecker+Invalid, 3402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 760 IncrementalHoareTripleChecker+Valid, 2642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:44:31,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 1755 Invalid, 3402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [760 Valid, 2642 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-04-01 22:44:31,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39188 states. [2023-04-01 22:44:31,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39188 to 35120. [2023-04-01 22:44:31,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35120 states, 34095 states have (on average 1.1423375861563279) internal successors, (38948), 34349 states have internal predecessors, (38948), 166 states have call successors, (166), 166 states have call predecessors, (166), 858 states have return successors, (5469), 604 states have call predecessors, (5469), 165 states have call successors, (5469) [2023-04-01 22:44:31,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35120 states to 35120 states and 44583 transitions. [2023-04-01 22:44:31,988 INFO L78 Accepts]: Start accepts. Automaton has 35120 states and 44583 transitions. Word has length 291 [2023-04-01 22:44:31,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:44:31,989 INFO L495 AbstractCegarLoop]: Abstraction has 35120 states and 44583 transitions. [2023-04-01 22:44:31,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 22:44:31,989 INFO L276 IsEmpty]: Start isEmpty. Operand 35120 states and 44583 transitions. [2023-04-01 22:44:31,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-04-01 22:44:31,993 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:44:31,994 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:44:32,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 22:44:32,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:44:32,202 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:44:32,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:44:32,202 INFO L85 PathProgramCache]: Analyzing trace with hash 2070702902, now seen corresponding path program 1 times [2023-04-01 22:44:32,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:44:32,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130354577] [2023-04-01 22:44:32,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:32,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:44:32,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:32,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:44:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:32,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:44:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:32,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-01 22:44:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:32,666 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:44:32,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:44:32,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130354577] [2023-04-01 22:44:32,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130354577] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:44:32,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692145143] [2023-04-01 22:44:32,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:32,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:44:32,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:44:32,668 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:44:32,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 22:44:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:32,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:44:32,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:44:32,958 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:44:32,959 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:44:33,353 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:44:33,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692145143] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:44:33,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:44:33,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:44:33,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098891842] [2023-04-01 22:44:33,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:44:33,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:44:33,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:44:33,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:44:33,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:44:33,356 INFO L87 Difference]: Start difference. First operand 35120 states and 44583 transitions. Second operand has 11 states, 11 states have (on average 54.0) internal successors, (594), 9 states have internal predecessors, (594), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 22:44:44,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:44:44,338 INFO L93 Difference]: Finished difference Result 78676 states and 105003 transitions. [2023-04-01 22:44:44,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-04-01 22:44:44,338 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 54.0) internal successors, (594), 9 states have internal predecessors, (594), 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 291 [2023-04-01 22:44:44,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:44:44,439 INFO L225 Difference]: With dead ends: 78676 [2023-04-01 22:44:44,439 INFO L226 Difference]: Without dead ends: 42661 [2023-04-01 22:44:44,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 597 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=390, Invalid=1590, Unknown=0, NotChecked=0, Total=1980 [2023-04-01 22:44:44,478 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 12232 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 15790 mSolverCounterSat, 1808 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12237 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 17598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1808 IncrementalHoareTripleChecker+Valid, 15790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2023-04-01 22:44:44,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12237 Valid, 1241 Invalid, 17598 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1808 Valid, 15790 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2023-04-01 22:44:44,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42661 states. [2023-04-01 22:44:45,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42661 to 42287. [2023-04-01 22:44:45,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42287 states, 40940 states have (on average 1.0888617489008305) internal successors, (44578), 41293 states have internal predecessors, (44578), 240 states have call successors, (240), 198 states have call predecessors, (240), 1106 states have return successors, (6166), 795 states have call predecessors, (6166), 239 states have call successors, (6166) [2023-04-01 22:44:45,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42287 states to 42287 states and 50984 transitions. [2023-04-01 22:44:45,184 INFO L78 Accepts]: Start accepts. Automaton has 42287 states and 50984 transitions. Word has length 291 [2023-04-01 22:44:45,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:44:45,184 INFO L495 AbstractCegarLoop]: Abstraction has 42287 states and 50984 transitions. [2023-04-01 22:44:45,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 54.0) internal successors, (594), 9 states have internal predecessors, (594), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 22:44:45,184 INFO L276 IsEmpty]: Start isEmpty. Operand 42287 states and 50984 transitions. [2023-04-01 22:44:45,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2023-04-01 22:44:45,190 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:44:45,190 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:44:45,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 22:44:45,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:44:45,396 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:44:45,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:44:45,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1086881189, now seen corresponding path program 1 times [2023-04-01 22:44:45,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:44:45,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368441651] [2023-04-01 22:44:45,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:45,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:44:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:45,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:44:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:45,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:44:45,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:45,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-01 22:44:45,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:45,628 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-04-01 22:44:45,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:44:45,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368441651] [2023-04-01 22:44:45,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368441651] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:44:45,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334792895] [2023-04-01 22:44:45,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:45,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:44:45,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:44:45,630 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:44:45,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 22:44:45,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:45,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 22:44:45,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:44:45,761 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-04-01 22:44:45,762 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:44:45,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334792895] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:44:45,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:44:45,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-04-01 22:44:45,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215003821] [2023-04-01 22:44:45,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:44:45,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:44:45,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:44:45,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:44:45,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:44:45,763 INFO L87 Difference]: Start difference. First operand 42287 states and 50984 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:44:48,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:44:48,985 INFO L93 Difference]: Finished difference Result 113124 states and 140652 transitions. [2023-04-01 22:44:48,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:44:48,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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 319 [2023-04-01 22:44:48,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:44:49,140 INFO L225 Difference]: With dead ends: 113124 [2023-04-01 22:44:49,141 INFO L226 Difference]: Without dead ends: 70035 [2023-04-01 22:44:49,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:44:49,197 INFO L413 NwaCegarLoop]: 1619 mSDtfsCounter, 1008 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 763 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 1757 SdHoareTripleChecker+Invalid, 3104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 763 IncrementalHoareTripleChecker+Valid, 2341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:44:49,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 1757 Invalid, 3104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [763 Valid, 2341 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-01 22:44:49,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70035 states. [2023-04-01 22:44:50,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70035 to 65165. [2023-04-01 22:44:50,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65165 states, 63432 states have (on average 1.0718091814856854) internal successors, (67987), 63852 states have internal predecessors, (67987), 377 states have call successors, (377), 310 states have call predecessors, (377), 1355 states have return successors, (9615), 1002 states have call predecessors, (9615), 376 states have call successors, (9615) [2023-04-01 22:44:50,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65165 states to 65165 states and 77979 transitions. [2023-04-01 22:44:50,449 INFO L78 Accepts]: Start accepts. Automaton has 65165 states and 77979 transitions. Word has length 319 [2023-04-01 22:44:50,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:44:50,450 INFO L495 AbstractCegarLoop]: Abstraction has 65165 states and 77979 transitions. [2023-04-01 22:44:50,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:44:50,450 INFO L276 IsEmpty]: Start isEmpty. Operand 65165 states and 77979 transitions. [2023-04-01 22:44:50,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2023-04-01 22:44:50,460 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:44:50,460 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:44:50,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 22:44:50,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:44:50,666 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:44:50,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:44:50,666 INFO L85 PathProgramCache]: Analyzing trace with hash -247026949, now seen corresponding path program 1 times [2023-04-01 22:44:50,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:44:50,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409545345] [2023-04-01 22:44:50,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:50,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:44:50,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:51,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:44:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:51,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:44:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:51,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-04-01 22:44:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:51,767 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 15 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:44:51,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:44:51,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409545345] [2023-04-01 22:44:51,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409545345] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:44:51,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377187502] [2023-04-01 22:44:51,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:51,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:44:51,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:44:51,769 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:44:51,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 22:44:51,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:51,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 22:44:51,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:44:52,127 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-01 22:44:52,128 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:44:52,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377187502] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:44:52,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:44:52,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-04-01 22:44:52,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605591454] [2023-04-01 22:44:52,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:44:52,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:44:52,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:44:52,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:44:52,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-04-01 22:44:52,130 INFO L87 Difference]: Start difference. First operand 65165 states and 77979 transitions. Second operand has 5 states, 5 states have (on average 70.0) internal successors, (350), 4 states have internal predecessors, (350), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 22:44:56,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:44:56,385 INFO L93 Difference]: Finished difference Result 122270 states and 145261 transitions. [2023-04-01 22:44:56,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 22:44:56,386 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 70.0) internal successors, (350), 4 states have internal predecessors, (350), 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 364 [2023-04-01 22:44:56,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:44:56,555 INFO L225 Difference]: With dead ends: 122270 [2023-04-01 22:44:56,555 INFO L226 Difference]: Without dead ends: 65630 [2023-04-01 22:44:56,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-04-01 22:44:56,622 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 2264 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 5476 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2264 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 5633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 5476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:44:56,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2264 Valid, 592 Invalid, 5633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 5476 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-04-01 22:44:56,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65630 states. [2023-04-01 22:44:57,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65630 to 65541. [2023-04-01 22:44:57,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65541 states, 63657 states have (on average 1.0714768210880186) internal successors, (68207), 64153 states have internal predecessors, (68207), 377 states have call successors, (377), 310 states have call predecessors, (377), 1506 states have return successors, (10286), 1077 states have call predecessors, (10286), 376 states have call successors, (10286) [2023-04-01 22:44:57,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65541 states to 65541 states and 78870 transitions. [2023-04-01 22:44:57,701 INFO L78 Accepts]: Start accepts. Automaton has 65541 states and 78870 transitions. Word has length 364 [2023-04-01 22:44:57,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:44:57,701 INFO L495 AbstractCegarLoop]: Abstraction has 65541 states and 78870 transitions. [2023-04-01 22:44:57,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.0) internal successors, (350), 4 states have internal predecessors, (350), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 22:44:57,701 INFO L276 IsEmpty]: Start isEmpty. Operand 65541 states and 78870 transitions. [2023-04-01 22:44:57,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2023-04-01 22:44:57,713 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:44:57,713 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:44:57,718 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 22:44:57,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:44:57,918 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:44:57,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:44:57,919 INFO L85 PathProgramCache]: Analyzing trace with hash -806399986, now seen corresponding path program 1 times [2023-04-01 22:44:57,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:44:57,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564038551] [2023-04-01 22:44:57,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:57,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:44:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:58,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:44:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:58,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:44:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:58,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-01 22:44:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:58,570 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-04-01 22:44:58,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:44:58,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564038551] [2023-04-01 22:44:58,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564038551] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:44:58,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722467829] [2023-04-01 22:44:58,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:58,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:44:58,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:44:58,571 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:44:58,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 22:44:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:58,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 16 conjunts are in the unsatisfiable core [2023-04-01 22:44:58,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:44:58,981 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-01 22:44:58,981 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:44:58,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722467829] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:44:58,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:44:58,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-04-01 22:44:58,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157103988] [2023-04-01 22:44:58,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:44:58,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:44:58,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:44:58,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:44:58,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-04-01 22:44:58,982 INFO L87 Difference]: Start difference. First operand 65541 states and 78870 transitions. Second operand has 5 states, 5 states have (on average 71.6) internal successors, (358), 4 states have internal predecessors, (358), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 22:45:03,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:45:03,267 INFO L93 Difference]: Finished difference Result 130476 states and 154924 transitions. [2023-04-01 22:45:03,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 22:45:03,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 71.6) internal successors, (358), 4 states have internal predecessors, (358), 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 372 [2023-04-01 22:45:03,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:45:03,415 INFO L225 Difference]: With dead ends: 130476 [2023-04-01 22:45:03,416 INFO L226 Difference]: Without dead ends: 65744 [2023-04-01 22:45:03,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:45:03,491 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 2444 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 5297 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2444 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 5624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 5297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:45:03,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2444 Valid, 551 Invalid, 5624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 5297 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-04-01 22:45:03,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65744 states. [2023-04-01 22:45:04,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65744 to 65618. [2023-04-01 22:45:04,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65618 states, 63663 states have (on average 1.0713601306881548) internal successors, (68206), 64226 states have internal predecessors, (68206), 310 states have call successors, (310), 310 states have call predecessors, (310), 1644 states have return successors, (8055), 1081 states have call predecessors, (8055), 309 states have call successors, (8055) [2023-04-01 22:45:04,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65618 states to 65618 states and 76571 transitions. [2023-04-01 22:45:04,639 INFO L78 Accepts]: Start accepts. Automaton has 65618 states and 76571 transitions. Word has length 372 [2023-04-01 22:45:04,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:45:04,639 INFO L495 AbstractCegarLoop]: Abstraction has 65618 states and 76571 transitions. [2023-04-01 22:45:04,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.6) internal successors, (358), 4 states have internal predecessors, (358), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 22:45:04,639 INFO L276 IsEmpty]: Start isEmpty. Operand 65618 states and 76571 transitions. [2023-04-01 22:45:04,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2023-04-01 22:45:04,649 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:45:04,649 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-04-01 22:45:04,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-04-01 22:45:04,854 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,SelfDestructingSolverStorable9 [2023-04-01 22:45:04,854 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:45:04,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:45:04,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1447216426, now seen corresponding path program 1 times [2023-04-01 22:45:04,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:45:04,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502873279] [2023-04-01 22:45:04,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:04,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:45:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:05,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:45:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:05,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:45:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:05,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-01 22:45:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:05,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2023-04-01 22:45:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:05,556 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-04-01 22:45:05,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:45:05,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502873279] [2023-04-01 22:45:05,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502873279] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:45:05,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562173408] [2023-04-01 22:45:05,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:05,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:45:05,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:45:05,558 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:45:05,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 22:45:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:05,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-01 22:45:05,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:45:06,103 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 297 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-01 22:45:06,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:45:07,515 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 26 proven. 277 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 22:45:07,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562173408] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:45:07,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:45:07,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 17 [2023-04-01 22:45:07,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517317627] [2023-04-01 22:45:07,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:45:07,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-01 22:45:07,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:45:07,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-01 22:45:07,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-04-01 22:45:07,517 INFO L87 Difference]: Start difference. First operand 65618 states and 76571 transitions. Second operand has 17 states, 17 states have (on average 54.470588235294116) internal successors, (926), 15 states have internal predecessors, (926), 7 states have call successors, (13), 11 states have call predecessors, (13), 8 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2023-04-01 22:45:23,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-04-01 22:45:34,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:45:34,799 INFO L93 Difference]: Finished difference Result 292591 states and 357745 transitions. [2023-04-01 22:45:34,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-04-01 22:45:34,800 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 54.470588235294116) internal successors, (926), 15 states have internal predecessors, (926), 7 states have call successors, (13), 11 states have call predecessors, (13), 8 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) Word has length 472 [2023-04-01 22:45:34,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:45:35,352 INFO L225 Difference]: With dead ends: 292591 [2023-04-01 22:45:35,352 INFO L226 Difference]: Without dead ends: 227781 [2023-04-01 22:45:35,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1110 GetRequests, 1016 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3362 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1909, Invalid=7021, Unknown=0, NotChecked=0, Total=8930 [2023-04-01 22:45:35,458 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 18639 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 23448 mSolverCounterSat, 7775 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18644 SdHoareTripleChecker+Valid, 1408 SdHoareTripleChecker+Invalid, 31224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7775 IncrementalHoareTripleChecker+Valid, 23448 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:45:35,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18644 Valid, 1408 Invalid, 31224 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7775 Valid, 23448 Invalid, 1 Unknown, 0 Unchecked, 23.4s Time] [2023-04-01 22:45:35,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227781 states. [2023-04-01 22:45:38,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227781 to 188852. [2023-04-01 22:45:38,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188852 states, 184931 states have (on average 1.0655487722447832) internal successors, (197053), 185881 states have internal predecessors, (197053), 914 states have call successors, (914), 914 states have call predecessors, (914), 3006 states have return successors, (25907), 2056 states have call predecessors, (25907), 913 states have call successors, (25907) [2023-04-01 22:45:39,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188852 states to 188852 states and 223874 transitions. [2023-04-01 22:45:39,165 INFO L78 Accepts]: Start accepts. Automaton has 188852 states and 223874 transitions. Word has length 472 [2023-04-01 22:45:39,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:45:39,165 INFO L495 AbstractCegarLoop]: Abstraction has 188852 states and 223874 transitions. [2023-04-01 22:45:39,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 54.470588235294116) internal successors, (926), 15 states have internal predecessors, (926), 7 states have call successors, (13), 11 states have call predecessors, (13), 8 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2023-04-01 22:45:39,165 INFO L276 IsEmpty]: Start isEmpty. Operand 188852 states and 223874 transitions. [2023-04-01 22:45:39,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2023-04-01 22:45:39,173 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:45:39,174 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:45:39,180 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 22:45:39,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:45:39,379 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:45:39,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:45:39,379 INFO L85 PathProgramCache]: Analyzing trace with hash 495730332, now seen corresponding path program 1 times [2023-04-01 22:45:39,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:45:39,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319604289] [2023-04-01 22:45:39,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:39,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:45:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:39,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:45:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:39,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:45:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:40,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-04-01 22:45:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:40,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2023-04-01 22:45:40,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:40,248 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 151 proven. 291 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-01 22:45:40,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:45:40,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319604289] [2023-04-01 22:45:40,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319604289] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:45:40,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885486889] [2023-04-01 22:45:40,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:40,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:45:40,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:45:40,250 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:45:40,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-01 22:45:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:40,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 18 conjunts are in the unsatisfiable core [2023-04-01 22:45:40,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:45:42,460 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 439 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-01 22:45:42,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:45:46,258 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 26 proven. 419 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 22:45:46,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885486889] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:45:46,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:45:46,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 25 [2023-04-01 22:45:46,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903528339] [2023-04-01 22:45:46,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:45:46,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-04-01 22:45:46,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:45:46,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-04-01 22:45:46,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2023-04-01 22:45:46,266 INFO L87 Difference]: Start difference. First operand 188852 states and 223874 transitions. Second operand has 25 states, 25 states have (on average 49.88) internal successors, (1247), 23 states have internal predecessors, (1247), 8 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) [2023-04-01 22:46:39,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:46:39,028 INFO L93 Difference]: Finished difference Result 506958 states and 614242 transitions. [2023-04-01 22:46:39,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states. [2023-04-01 22:46:39,029 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 49.88) internal successors, (1247), 23 states have internal predecessors, (1247), 8 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) Word has length 493 [2023-04-01 22:46:39,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:46:39,968 INFO L225 Difference]: With dead ends: 506958 [2023-04-01 22:46:39,968 INFO L226 Difference]: Without dead ends: 306220 [2023-04-01 22:46:40,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1404 GetRequests, 1158 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26829 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=8216, Invalid=53040, Unknown=0, NotChecked=0, Total=61256 [2023-04-01 22:46:40,137 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 42390 mSDsluCounter, 2575 mSDsCounter, 0 mSdLazyCounter, 62074 mSolverCounterSat, 13012 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42402 SdHoareTripleChecker+Valid, 2845 SdHoareTripleChecker+Invalid, 75086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 13012 IncrementalHoareTripleChecker+Valid, 62074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:46:40,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42402 Valid, 2845 Invalid, 75086 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [13012 Valid, 62074 Invalid, 0 Unknown, 0 Unchecked, 39.5s Time] [2023-04-01 22:46:40,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306220 states. [2023-04-01 22:46:44,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306220 to 298729. [2023-04-01 22:46:44,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298729 states, 293469 states have (on average 1.0515557009428593) internal successors, (308599), 294544 states have internal predecessors, (308599), 1458 states have call successors, (1458), 1458 states have call predecessors, (1458), 3801 states have return successors, (34991), 2726 states have call predecessors, (34991), 1457 states have call successors, (34991) [2023-04-01 22:46:45,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298729 states to 298729 states and 345048 transitions. [2023-04-01 22:46:45,684 INFO L78 Accepts]: Start accepts. Automaton has 298729 states and 345048 transitions. Word has length 493 [2023-04-01 22:46:45,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:46:45,684 INFO L495 AbstractCegarLoop]: Abstraction has 298729 states and 345048 transitions. [2023-04-01 22:46:45,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 49.88) internal successors, (1247), 23 states have internal predecessors, (1247), 8 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) [2023-04-01 22:46:45,684 INFO L276 IsEmpty]: Start isEmpty. Operand 298729 states and 345048 transitions. [2023-04-01 22:46:45,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 854 [2023-04-01 22:46:45,703 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:46:45,703 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 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, 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] [2023-04-01 22:46:45,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-04-01 22:46:45,908 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,SelfDestructingSolverStorable11 [2023-04-01 22:46:45,909 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:46:45,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:46:45,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1042146742, now seen corresponding path program 1 times [2023-04-01 22:46:45,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:46:45,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354258705] [2023-04-01 22:46:45,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:46:45,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:46:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:47,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:46:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:47,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:46:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:47,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-01 22:46:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:47,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:46:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:47,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2023-04-01 22:46:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:47,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2023-04-01 22:46:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:48,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 667 [2023-04-01 22:46:48,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:48,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1147 backedges. 388 proven. 178 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2023-04-01 22:46:48,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:46:48,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354258705] [2023-04-01 22:46:48,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354258705] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:46:48,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048106882] [2023-04-01 22:46:48,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:46:48,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:46:48,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:46:48,253 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:46:48,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-01 22:46:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:48,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 1262 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 22:46:48,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:46:48,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1147 backedges. 862 proven. 2 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2023-04-01 22:46:48,704 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:46:49,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1147 backedges. 198 proven. 144 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2023-04-01 22:46:49,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048106882] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:46:49,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:46:49,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 15 [2023-04-01 22:46:49,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504206615] [2023-04-01 22:46:49,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:46:49,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 22:46:49,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:46:49,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 22:46:49,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-04-01 22:46:49,039 INFO L87 Difference]: Start difference. First operand 298729 states and 345048 transitions. Second operand has 15 states, 15 states have (on average 55.0) internal successors, (825), 13 states have internal predecessors, (825), 6 states have call successors, (15), 7 states have call predecessors, (15), 8 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2023-04-01 22:47:21,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:47:21,522 INFO L93 Difference]: Finished difference Result 790816 states and 938042 transitions. [2023-04-01 22:47:21,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2023-04-01 22:47:21,523 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 55.0) internal successors, (825), 13 states have internal predecessors, (825), 6 states have call successors, (15), 7 states have call predecessors, (15), 8 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 853 [2023-04-01 22:47:21,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:47:23,226 INFO L225 Difference]: With dead ends: 790816 [2023-04-01 22:47:23,226 INFO L226 Difference]: Without dead ends: 499301 [2023-04-01 22:47:23,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1924 GetRequests, 1806 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5492 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1745, Invalid=12297, Unknown=0, NotChecked=0, Total=14042 [2023-04-01 22:47:23,565 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 18173 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 34926 mSolverCounterSat, 5182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18186 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 40108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5182 IncrementalHoareTripleChecker+Valid, 34926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:47:23,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18186 Valid, 1855 Invalid, 40108 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5182 Valid, 34926 Invalid, 0 Unknown, 0 Unchecked, 25.3s Time] [2023-04-01 22:47:23,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499301 states.