/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/eca-rers2012/Problem12_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 22:24:23,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 22:24:23,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 22:24:23,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 22:24:23,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 22:24:23,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 22:24:23,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 22:24:23,935 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 22:24:23,966 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 22:24:23,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 22:24:23,967 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 22:24:23,967 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 22:24:23,968 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 22:24:23,969 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 22:24:23,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 22:24:23,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 22:24:23,969 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 22:24:23,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 22:24:23,970 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 22:24:23,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 22:24:23,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 22:24:23,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 22:24:23,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 22:24:23,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 22:24:23,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 22:24:23,971 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 22:24:23,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 22:24:23,971 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 22:24:23,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 22:24:23,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 22:24:23,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 22:24:23,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 22:24:23,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:24:23,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 22:24:23,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 22:24:23,972 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 22:24:23,972 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 22:24:23,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 22:24:23,973 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 22:24:23,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 22:24:23,973 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 22:24:23,973 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 22:24:23,973 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 22:24:23,973 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 22:24:24,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 22:24:24,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 22:24:24,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 22:24:24,199 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 22:24:24,200 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 22:24:24,201 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label14.c [2023-04-01 22:24:25,409 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 22:24:25,823 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 22:24:25,823 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label14.c [2023-04-01 22:24:25,861 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7c97304e/79eab494bd5d414c8143ff03b0103ab0/FLAG3834d1bc4 [2023-04-01 22:24:25,875 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7c97304e/79eab494bd5d414c8143ff03b0103ab0 [2023-04-01 22:24:25,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 22:24:25,879 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 22:24:25,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 22:24:25,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 22:24:25,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 22:24:25,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:24:25" (1/1) ... [2023-04-01 22:24:25,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4deb5db2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:25, skipping insertion in model container [2023-04-01 22:24:25,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:24:25" (1/1) ... [2023-04-01 22:24:25,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 22:24:26,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 22:24:26,284 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label14.c[6042,6055] [2023-04-01 22:24:26,950 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:24:26,961 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 22:24:26,987 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label14.c[6042,6055] [2023-04-01 22:24:27,355 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:24:27,375 INFO L208 MainTranslator]: Completed translation [2023-04-01 22:24:27,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:27 WrapperNode [2023-04-01 22:24:27,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 22:24:27,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 22:24:27,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 22:24:27,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 22:24:27,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:27" (1/1) ... [2023-04-01 22:24:27,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:27" (1/1) ... [2023-04-01 22:24:27,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:27" (1/1) ... [2023-04-01 22:24:27,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:27" (1/1) ... [2023-04-01 22:24:27,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:27" (1/1) ... [2023-04-01 22:24:27,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:27" (1/1) ... [2023-04-01 22:24:27,595 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:27" (1/1) ... [2023-04-01 22:24:27,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:27" (1/1) ... [2023-04-01 22:24:27,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 22:24:27,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 22:24:27,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 22:24:27,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 22:24:27,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:27" (1/1) ... [2023-04-01 22:24:27,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:24:27,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:24:27,666 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 22:24:27,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 22:24:27,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 22:24:27,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 22:24:27,710 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 22:24:27,710 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 22:24:27,710 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 22:24:27,710 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 22:24:27,711 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 22:24:27,711 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 22:24:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 22:24:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 22:24:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 22:24:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 22:24:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 22:24:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 22:24:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 22:24:27,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 22:24:27,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 22:24:27,712 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 22:24:27,712 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 22:24:27,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 22:24:27,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 22:24:27,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 22:24:27,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 22:24:27,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 22:24:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 22:24:27,775 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 22:24:27,777 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 22:24:31,542 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 22:24:31,558 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 22:24:31,558 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 22:24:31,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:24:31 BoogieIcfgContainer [2023-04-01 22:24:31,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 22:24:31,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 22:24:31,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 22:24:31,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 22:24:31,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:24:25" (1/3) ... [2023-04-01 22:24:31,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645e1c79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:24:31, skipping insertion in model container [2023-04-01 22:24:31,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:27" (2/3) ... [2023-04-01 22:24:31,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645e1c79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:24:31, skipping insertion in model container [2023-04-01 22:24:31,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:24:31" (3/3) ... [2023-04-01 22:24:31,570 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label14.c [2023-04-01 22:24:31,585 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 22:24:31,585 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 22:24:31,647 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 22:24:31,655 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;@2609b6a4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 22:24:31,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 22:24:31,665 INFO L276 IsEmpty]: Start isEmpty. Operand has 839 states, 825 states have (on average 1.907878787878788) internal successors, (1574), 826 states have internal predecessors, (1574), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 22:24:31,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-04-01 22:24:31,675 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:24:31,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:24:31,677 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:24:31,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:24:31,683 INFO L85 PathProgramCache]: Analyzing trace with hash -2006303419, now seen corresponding path program 1 times [2023-04-01 22:24:31,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:24:31,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629296529] [2023-04-01 22:24:31,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:24:31,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:24:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:32,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:24:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:32,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:24:32,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:24:32,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629296529] [2023-04-01 22:24:32,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629296529] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:24:32,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:24:32,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 22:24:32,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707963463] [2023-04-01 22:24:32,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:24:32,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:24:32,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:24:32,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:24:32,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:24:32,241 INFO L87 Difference]: Start difference. First operand has 839 states, 825 states have (on average 1.907878787878788) internal successors, (1574), 826 states have internal predecessors, (1574), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 22:24:37,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:24:37,265 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2023-04-01 22:24:37,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 22:24:37,267 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 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 54 [2023-04-01 22:24:37,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:24:37,287 INFO L225 Difference]: With dead ends: 2471 [2023-04-01 22:24:37,287 INFO L226 Difference]: Without dead ends: 1568 [2023-04-01 22:24:37,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:24:37,303 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 3295 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3345 mSolverCounterSat, 1478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3295 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 4823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1478 IncrementalHoareTripleChecker+Valid, 3345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:24:37,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3295 Valid, 46 Invalid, 4823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1478 Valid, 3345 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-04-01 22:24:37,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2023-04-01 22:24:37,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2023-04-01 22:24:37,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1553 states, 1529 states have (on average 1.8521909744931329) internal successors, (2832), 1530 states have internal predecessors, (2832), 10 states have call successors, (10), 10 states have call predecessors, (10), 13 states have return successors, (21), 12 states have call predecessors, (21), 9 states have call successors, (21) [2023-04-01 22:24:37,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2863 transitions. [2023-04-01 22:24:37,430 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2863 transitions. Word has length 54 [2023-04-01 22:24:37,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:24:37,433 INFO L495 AbstractCegarLoop]: Abstraction has 1553 states and 2863 transitions. [2023-04-01 22:24:37,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 22:24:37,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2863 transitions. [2023-04-01 22:24:37,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-04-01 22:24:37,445 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:24:37,445 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:24:37,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 22:24:37,453 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:24:37,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:24:37,454 INFO L85 PathProgramCache]: Analyzing trace with hash -320060917, now seen corresponding path program 1 times [2023-04-01 22:24:37,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:24:37,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152790335] [2023-04-01 22:24:37,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:24:37,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:24:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:37,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:24:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:37,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:24:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:37,835 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:24:37,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:24:37,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152790335] [2023-04-01 22:24:37,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152790335] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:24:37,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:24:37,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 22:24:37,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340549438] [2023-04-01 22:24:37,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:24:37,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 22:24:37,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:24:37,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 22:24:37,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:24:37,839 INFO L87 Difference]: Start difference. First operand 1553 states and 2863 transitions. Second operand has 7 states, 6 states have (on average 19.5) internal successors, (117), 4 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 22:24:43,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:24:43,639 INFO L93 Difference]: Finished difference Result 4757 states and 8776 transitions. [2023-04-01 22:24:43,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 22:24:43,640 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.5) internal successors, (117), 4 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 22:24:43,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:24:43,656 INFO L225 Difference]: With dead ends: 4757 [2023-04-01 22:24:43,656 INFO L226 Difference]: Without dead ends: 3210 [2023-04-01 22:24:43,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:24:43,661 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 3152 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 5597 mSolverCounterSat, 935 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3152 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 6532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 935 IncrementalHoareTripleChecker+Valid, 5597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:24:43,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3152 Valid, 124 Invalid, 6532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [935 Valid, 5597 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-04-01 22:24:43,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3210 states. [2023-04-01 22:24:43,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3210 to 3139. [2023-04-01 22:24:43,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3139 states, 3080 states have (on average 1.6357142857142857) internal successors, (5038), 3086 states have internal predecessors, (5038), 18 states have call successors, (18), 18 states have call predecessors, (18), 40 states have return successors, (85), 34 states have call predecessors, (85), 17 states have call successors, (85) [2023-04-01 22:24:43,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 5141 transitions. [2023-04-01 22:24:43,760 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 5141 transitions. Word has length 123 [2023-04-01 22:24:43,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:24:43,762 INFO L495 AbstractCegarLoop]: Abstraction has 3139 states and 5141 transitions. [2023-04-01 22:24:43,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.5) internal successors, (117), 4 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 22:24:43,762 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 5141 transitions. [2023-04-01 22:24:43,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-04-01 22:24:43,766 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:24:43,766 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:24:43,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 22:24:43,766 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:24:43,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:24:43,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1387542689, now seen corresponding path program 1 times [2023-04-01 22:24:43,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:24:43,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792397583] [2023-04-01 22:24:43,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:24:43,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:24:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:43,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:24:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:43,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:24:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:44,063 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:24:44,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:24:44,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792397583] [2023-04-01 22:24:44,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792397583] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:24:44,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921739924] [2023-04-01 22:24:44,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:24:44,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:24:44,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:24:44,068 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:24:44,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 22:24:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:44,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 22:24:44,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:24:44,508 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 22:24:44,509 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:24:44,950 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 22:24:44,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921739924] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-01 22:24:44,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-01 22:24:44,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-04-01 22:24:44,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036410815] [2023-04-01 22:24:44,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:24:44,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 22:24:44,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:24:44,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 22:24:44,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-04-01 22:24:44,958 INFO L87 Difference]: Start difference. First operand 3139 states and 5141 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:24:48,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:24:48,447 INFO L93 Difference]: Finished difference Result 9473 states and 15733 transitions. [2023-04-01 22:24:48,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 22:24:48,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 129 [2023-04-01 22:24:48,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:24:48,476 INFO L225 Difference]: With dead ends: 9473 [2023-04-01 22:24:48,477 INFO L226 Difference]: Without dead ends: 6340 [2023-04-01 22:24:48,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 256 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-04-01 22:24:48,484 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 2303 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 2680 mSolverCounterSat, 1220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2303 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 3900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1220 IncrementalHoareTripleChecker+Valid, 2680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:24:48,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2303 Valid, 60 Invalid, 3900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1220 Valid, 2680 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-04-01 22:24:48,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6340 states. [2023-04-01 22:24:48,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6340 to 6340. [2023-04-01 22:24:48,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6340 states, 6200 states have (on average 1.4222580645161291) internal successors, (8818), 6220 states have internal predecessors, (8818), 34 states have call successors, (34), 34 states have call predecessors, (34), 105 states have return successors, (368), 85 states have call predecessors, (368), 33 states have call successors, (368) [2023-04-01 22:24:48,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6340 states to 6340 states and 9220 transitions. [2023-04-01 22:24:48,649 INFO L78 Accepts]: Start accepts. Automaton has 6340 states and 9220 transitions. Word has length 129 [2023-04-01 22:24:48,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:24:48,652 INFO L495 AbstractCegarLoop]: Abstraction has 6340 states and 9220 transitions. [2023-04-01 22:24:48,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:24:48,652 INFO L276 IsEmpty]: Start isEmpty. Operand 6340 states and 9220 transitions. [2023-04-01 22:24:48,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-04-01 22:24:48,654 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:24:48,654 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:24:48,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 22:24:48,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:24:48,868 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:24:48,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:24:48,868 INFO L85 PathProgramCache]: Analyzing trace with hash -314901196, now seen corresponding path program 1 times [2023-04-01 22:24:48,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:24:48,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578936881] [2023-04-01 22:24:48,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:24:48,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:24:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:49,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:24:49,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:49,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:24:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:49,266 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:24:49,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:24:49,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578936881] [2023-04-01 22:24:49,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578936881] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:24:49,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:24:49,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:24:49,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340994477] [2023-04-01 22:24:49,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:24:49,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:24:49,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:24:49,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:24:49,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:24:49,274 INFO L87 Difference]: Start difference. First operand 6340 states and 9220 transitions. Second operand has 8 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:24:56,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:24:56,273 INFO L93 Difference]: Finished difference Result 26031 states and 40813 transitions. [2023-04-01 22:24:56,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:24:56,274 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 174 [2023-04-01 22:24:56,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:24:56,362 INFO L225 Difference]: With dead ends: 26031 [2023-04-01 22:24:56,362 INFO L226 Difference]: Without dead ends: 19697 [2023-04-01 22:24:56,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:24:56,388 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 8563 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 6653 mSolverCounterSat, 1675 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8563 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 8328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1675 IncrementalHoareTripleChecker+Valid, 6653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:24:56,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8563 Valid, 157 Invalid, 8328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1675 Valid, 6653 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-04-01 22:24:56,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19697 states. [2023-04-01 22:24:56,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19697 to 19607. [2023-04-01 22:24:56,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19607 states, 18960 states have (on average 1.3013713080168776) internal successors, (24674), 19122 states have internal predecessors, (24674), 98 states have call successors, (98), 98 states have call predecessors, (98), 548 states have return successors, (3496), 386 states have call predecessors, (3496), 97 states have call successors, (3496) [2023-04-01 22:24:56,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19607 states to 19607 states and 28268 transitions. [2023-04-01 22:24:56,919 INFO L78 Accepts]: Start accepts. Automaton has 19607 states and 28268 transitions. Word has length 174 [2023-04-01 22:24:56,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:24:56,921 INFO L495 AbstractCegarLoop]: Abstraction has 19607 states and 28268 transitions. [2023-04-01 22:24:56,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:24:56,922 INFO L276 IsEmpty]: Start isEmpty. Operand 19607 states and 28268 transitions. [2023-04-01 22:24:56,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-04-01 22:24:56,928 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:24:56,928 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:24:56,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 22:24:56,928 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:24:56,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:24:56,932 INFO L85 PathProgramCache]: Analyzing trace with hash -305628740, now seen corresponding path program 1 times [2023-04-01 22:24:56,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:24:56,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535440246] [2023-04-01 22:24:56,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:24:56,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:24:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:57,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:24:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:57,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:24:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:57,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-04-01 22:24:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:57,567 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 94 proven. 64 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 22:24:57,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:24:57,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535440246] [2023-04-01 22:24:57,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535440246] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:24:57,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030458681] [2023-04-01 22:24:57,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:24:57,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:24:57,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:24:57,569 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:24:57,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 22:24:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:57,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 22:24:57,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:24:57,905 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-04-01 22:24:57,906 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:24:57,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030458681] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:24:57,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:24:57,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-04-01 22:24:57,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151356177] [2023-04-01 22:24:57,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:24:57,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:24:57,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:24:57,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:24:57,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:24:57,908 INFO L87 Difference]: Start difference. First operand 19607 states and 28268 transitions. Second operand has 5 states, 5 states have (on average 44.2) internal successors, (221), 4 states have internal predecessors, (221), 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 22:25:02,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:25:02,109 INFO L93 Difference]: Finished difference Result 49064 states and 74924 transitions. [2023-04-01 22:25:02,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 22:25:02,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.2) internal successors, (221), 4 states have internal predecessors, (221), 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 275 [2023-04-01 22:25:02,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:25:02,252 INFO L225 Difference]: With dead ends: 49064 [2023-04-01 22:25:02,252 INFO L226 Difference]: Without dead ends: 29463 [2023-04-01 22:25:02,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:25:02,306 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 2166 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 4096 mSolverCounterSat, 1426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2166 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 5522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1426 IncrementalHoareTripleChecker+Valid, 4096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-04-01 22:25:02,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2166 Valid, 95 Invalid, 5522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1426 Valid, 4096 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-04-01 22:25:02,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29463 states. [2023-04-01 22:25:03,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29463 to 29253. [2023-04-01 22:25:03,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29253 states, 28337 states have (on average 1.2759642869746268) internal successors, (36157), 28576 states have internal predecessors, (36157), 146 states have call successors, (146), 146 states have call predecessors, (146), 769 states have return successors, (6474), 530 states have call predecessors, (6474), 145 states have call successors, (6474) [2023-04-01 22:25:03,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29253 states to 29253 states and 42777 transitions. [2023-04-01 22:25:03,141 INFO L78 Accepts]: Start accepts. Automaton has 29253 states and 42777 transitions. Word has length 275 [2023-04-01 22:25:03,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:25:03,142 INFO L495 AbstractCegarLoop]: Abstraction has 29253 states and 42777 transitions. [2023-04-01 22:25:03,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.2) internal successors, (221), 4 states have internal predecessors, (221), 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 22:25:03,142 INFO L276 IsEmpty]: Start isEmpty. Operand 29253 states and 42777 transitions. [2023-04-01 22:25:03,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-04-01 22:25:03,151 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:25:03,152 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:25:03,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-01 22:25:03,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:25:03,358 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:25:03,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:25:03,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1047593398, now seen corresponding path program 1 times [2023-04-01 22:25:03,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:25:03,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011689273] [2023-04-01 22:25:03,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:03,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:25:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:03,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:25:03,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:03,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:25:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:03,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-01 22:25:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:04,070 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 214 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 22:25:04,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:25:04,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011689273] [2023-04-01 22:25:04,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011689273] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:25:04,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016882694] [2023-04-01 22:25:04,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:04,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:25:04,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:25:04,072 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 22:25:04,096 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 22:25:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:04,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:25:04,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:25:04,401 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 218 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:25:04,401 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:25:04,805 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 218 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:25:04,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016882694] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:25:04,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:25:04,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2023-04-01 22:25:04,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714401414] [2023-04-01 22:25:04,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:25:04,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 22:25:04,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:25:04,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 22:25:04,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-04-01 22:25:04,821 INFO L87 Difference]: Start difference. First operand 29253 states and 42777 transitions. Second operand has 13 states, 13 states have (on average 44.0) internal successors, (572), 11 states have internal predecessors, (572), 5 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 22:25:16,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:25:16,674 INFO L93 Difference]: Finished difference Result 146754 states and 239558 transitions. [2023-04-01 22:25:16,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-01 22:25:16,674 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 44.0) internal successors, (572), 11 states have internal predecessors, (572), 5 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 325 [2023-04-01 22:25:16,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:25:17,188 INFO L225 Difference]: With dead ends: 146754 [2023-04-01 22:25:17,188 INFO L226 Difference]: Without dead ends: 117507 [2023-04-01 22:25:17,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 656 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=271, Invalid=851, Unknown=0, NotChecked=0, Total=1122 [2023-04-01 22:25:17,516 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 9525 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 11786 mSolverCounterSat, 3576 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9525 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 15362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3576 IncrementalHoareTripleChecker+Valid, 11786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:25:17,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9525 Valid, 343 Invalid, 15362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3576 Valid, 11786 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2023-04-01 22:25:17,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117507 states. [2023-04-01 22:25:20,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117507 to 92785. [2023-04-01 22:25:20,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92785 states, 90663 states have (on average 1.212655658868557) internal successors, (109943), 91171 states have internal predecessors, (109943), 470 states have call successors, (470), 470 states have call predecessors, (470), 1651 states have return successors, (25463), 1143 states have call predecessors, (25463), 469 states have call successors, (25463) [2023-04-01 22:25:20,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92785 states to 92785 states and 135876 transitions. [2023-04-01 22:25:20,839 INFO L78 Accepts]: Start accepts. Automaton has 92785 states and 135876 transitions. Word has length 325 [2023-04-01 22:25:20,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:25:20,839 INFO L495 AbstractCegarLoop]: Abstraction has 92785 states and 135876 transitions. [2023-04-01 22:25:20,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 44.0) internal successors, (572), 11 states have internal predecessors, (572), 5 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 22:25:20,839 INFO L276 IsEmpty]: Start isEmpty. Operand 92785 states and 135876 transitions. [2023-04-01 22:25:20,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2023-04-01 22:25:20,846 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:25:20,846 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:25:20,855 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 22:25:21,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:25:21,053 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:25:21,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:25:21,054 INFO L85 PathProgramCache]: Analyzing trace with hash -2105752577, now seen corresponding path program 1 times [2023-04-01 22:25:21,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:25:21,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417363013] [2023-04-01 22:25:21,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:21,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:25:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:21,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:25:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:21,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:25:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:21,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:25:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:21,621 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:25:21,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:25:21,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417363013] [2023-04-01 22:25:21,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417363013] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:25:21,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297672540] [2023-04-01 22:25:21,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:21,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:25:21,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:25:21,623 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 22:25:21,655 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 22:25:21,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:21,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:25:21,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:25:21,982 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 218 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:25:21,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:25:22,383 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 218 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:25:22,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297672540] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:25:22,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:25:22,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 22:25:22,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835972909] [2023-04-01 22:25:22,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:25:22,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 22:25:22,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:25:22,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 22:25:22,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:25:22,387 INFO L87 Difference]: Start difference. First operand 92785 states and 135876 transitions. Second operand has 12 states, 12 states have (on average 47.75) internal successors, (573), 10 states have internal predecessors, (573), 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 22:25:33,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:25:33,321 INFO L93 Difference]: Finished difference Result 218892 states and 329139 transitions. [2023-04-01 22:25:33,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-01 22:25:33,321 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 47.75) internal successors, (573), 10 states have internal predecessors, (573), 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 328 [2023-04-01 22:25:33,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:25:33,850 INFO L225 Difference]: With dead ends: 218892 [2023-04-01 22:25:33,850 INFO L226 Difference]: Without dead ends: 126113 [2023-04-01 22:25:34,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 683 GetRequests, 662 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2023-04-01 22:25:34,068 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 4560 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 13828 mSolverCounterSat, 2321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4563 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 16149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2321 IncrementalHoareTripleChecker+Valid, 13828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-04-01 22:25:34,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4563 Valid, 195 Invalid, 16149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2321 Valid, 13828 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2023-04-01 22:25:34,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126113 states. [2023-04-01 22:25:36,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126113 to 118905. [2023-04-01 22:25:36,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118905 states, 116266 states have (on average 1.1361016978308363) internal successors, (132090), 116833 states have internal predecessors, (132090), 711 states have call successors, (711), 602 states have call predecessors, (711), 1927 states have return successors, (29187), 1469 states have call predecessors, (29187), 710 states have call successors, (29187) [2023-04-01 22:25:37,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118905 states to 118905 states and 161988 transitions. [2023-04-01 22:25:37,304 INFO L78 Accepts]: Start accepts. Automaton has 118905 states and 161988 transitions. Word has length 328 [2023-04-01 22:25:37,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:25:37,305 INFO L495 AbstractCegarLoop]: Abstraction has 118905 states and 161988 transitions. [2023-04-01 22:25:37,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 47.75) internal successors, (573), 10 states have internal predecessors, (573), 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 22:25:37,305 INFO L276 IsEmpty]: Start isEmpty. Operand 118905 states and 161988 transitions. [2023-04-01 22:25:37,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2023-04-01 22:25:37,320 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:25:37,320 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:25:37,329 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 22:25:37,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:25:37,528 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:25:37,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:25:37,528 INFO L85 PathProgramCache]: Analyzing trace with hash 142964419, now seen corresponding path program 1 times [2023-04-01 22:25:37,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:25:37,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517347504] [2023-04-01 22:25:37,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:37,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:25:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:37,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:25:37,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:37,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:25:37,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:38,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:25:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:38,389 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 239 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:25:38,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:25:38,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517347504] [2023-04-01 22:25:38,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517347504] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:25:38,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022238850] [2023-04-01 22:25:38,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:38,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:25:38,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:25:38,391 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 22:25:38,397 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 22:25:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:38,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:25:38,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:25:38,805 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 240 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:25:38,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:25:39,386 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 240 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:25:39,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022238850] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:25:39,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:25:39,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:25:39,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107298584] [2023-04-01 22:25:39,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:25:39,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:25:39,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:25:39,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:25:39,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:25:39,390 INFO L87 Difference]: Start difference. First operand 118905 states and 161988 transitions. Second operand has 11 states, 11 states have (on average 72.9090909090909) internal successors, (802), 9 states have internal predecessors, (802), 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 22:25:48,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:25:48,373 INFO L93 Difference]: Finished difference Result 237903 states and 324737 transitions. [2023-04-01 22:25:48,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:25:48,374 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 72.9090909090909) internal successors, (802), 9 states have internal predecessors, (802), 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 406 [2023-04-01 22:25:48,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:25:48,995 INFO L225 Difference]: With dead ends: 237903 [2023-04-01 22:25:48,995 INFO L226 Difference]: Without dead ends: 119008 [2023-04-01 22:25:49,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 815 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2023-04-01 22:25:49,128 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 3787 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 10994 mSolverCounterSat, 2037 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3787 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 13031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2037 IncrementalHoareTripleChecker+Valid, 10994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:25:49,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3787 Valid, 245 Invalid, 13031 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2037 Valid, 10994 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-04-01 22:25:49,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119008 states. [2023-04-01 22:25:51,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119008 to 112730. [2023-04-01 22:25:51,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112730 states, 110168 states have (on average 1.1033693994626388) internal successors, (121556), 110729 states have internal predecessors, (121556), 673 states have call successors, (673), 570 states have call predecessors, (673), 1888 states have return successors, (21160), 1430 states have call predecessors, (21160), 672 states have call successors, (21160) [2023-04-01 22:25:51,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112730 states to 112730 states and 143389 transitions. [2023-04-01 22:25:51,755 INFO L78 Accepts]: Start accepts. Automaton has 112730 states and 143389 transitions. Word has length 406 [2023-04-01 22:25:51,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:25:51,756 INFO L495 AbstractCegarLoop]: Abstraction has 112730 states and 143389 transitions. [2023-04-01 22:25:51,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 72.9090909090909) internal successors, (802), 9 states have internal predecessors, (802), 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 22:25:51,756 INFO L276 IsEmpty]: Start isEmpty. Operand 112730 states and 143389 transitions. [2023-04-01 22:25:51,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2023-04-01 22:25:51,774 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:25:51,774 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:25:51,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 22:25:51,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:25:51,980 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:25:51,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:25:51,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1836151652, now seen corresponding path program 1 times [2023-04-01 22:25:51,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:25:51,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57707349] [2023-04-01 22:25:51,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:51,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:25:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:52,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:25:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:52,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:25:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:52,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:25:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:52,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-04-01 22:25:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:52,635 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 144 proven. 3 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-04-01 22:25:52,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:25:52,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57707349] [2023-04-01 22:25:52,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57707349] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:25:52,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311054876] [2023-04-01 22:25:52,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:52,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:25:52,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:25:52,637 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:25:52,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 22:25:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:52,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:25:52,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:25:52,901 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-04-01 22:25:52,901 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:25:52,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311054876] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:25:52,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:25:52,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-04-01 22:25:52,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029565213] [2023-04-01 22:25:52,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:25:52,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:25:52,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:25:52,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:25:52,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:25:52,905 INFO L87 Difference]: Start difference. First operand 112730 states and 143389 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:25:57,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:25:57,040 INFO L93 Difference]: Finished difference Result 245509 states and 314495 transitions. [2023-04-01 22:25:57,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:25:57,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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 428 [2023-04-01 22:25:57,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:25:57,426 INFO L225 Difference]: With dead ends: 245509 [2023-04-01 22:25:57,426 INFO L226 Difference]: Without dead ends: 132789 [2023-04-01 22:25:57,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 435 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:25:57,671 INFO L413 NwaCegarLoop]: 1150 mSDtfsCounter, 839 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2282 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 2685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 2282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:25:57,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 1182 Invalid, 2685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 2282 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-01 22:25:57,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132789 states. [2023-04-01 22:25:59,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132789 to 131249. [2023-04-01 22:25:59,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131249 states, 128463 states have (on average 1.099569525855694) internal successors, (141254), 129030 states have internal predecessors, (141254), 790 states have call successors, (790), 666 states have call predecessors, (790), 1995 states have return successors, (24015), 1552 states have call predecessors, (24015), 789 states have call successors, (24015) [2023-04-01 22:26:00,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131249 states to 131249 states and 166059 transitions. [2023-04-01 22:26:00,305 INFO L78 Accepts]: Start accepts. Automaton has 131249 states and 166059 transitions. Word has length 428 [2023-04-01 22:26:00,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:26:00,306 INFO L495 AbstractCegarLoop]: Abstraction has 131249 states and 166059 transitions. [2023-04-01 22:26:00,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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 22:26:00,306 INFO L276 IsEmpty]: Start isEmpty. Operand 131249 states and 166059 transitions. [2023-04-01 22:26:00,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2023-04-01 22:26:00,332 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:26:00,332 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:26:00,341 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 22:26:00,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:00,539 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:26:00,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:26:00,539 INFO L85 PathProgramCache]: Analyzing trace with hash -393534420, now seen corresponding path program 1 times [2023-04-01 22:26:00,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:26:00,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767624093] [2023-04-01 22:26:00,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:00,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:26:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:01,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:26:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:01,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:26:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:01,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-01 22:26:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:01,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2023-04-01 22:26:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:01,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2023-04-01 22:26:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:01,216 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 193 proven. 4 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2023-04-01 22:26:01,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:26:01,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767624093] [2023-04-01 22:26:01,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767624093] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:26:01,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210809391] [2023-04-01 22:26:01,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:01,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:01,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:26:01,218 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 22:26:01,244 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 22:26:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:01,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 22:26:01,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:26:01,616 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 361 proven. 46 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2023-04-01 22:26:01,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:26:01,941 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 405 proven. 2 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2023-04-01 22:26:01,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210809391] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:26:01,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:26:01,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 13 [2023-04-01 22:26:01,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558692441] [2023-04-01 22:26:01,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:26:01,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 22:26:01,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:26:01,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 22:26:01,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-04-01 22:26:01,944 INFO L87 Difference]: Start difference. First operand 131249 states and 166059 transitions. Second operand has 13 states, 13 states have (on average 33.53846153846154) internal successors, (436), 11 states have internal predecessors, (436), 6 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 22:26:27,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:26:27,325 INFO L93 Difference]: Finished difference Result 423757 states and 556869 transitions. [2023-04-01 22:26:27,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-04-01 22:26:27,325 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 33.53846153846154) internal successors, (436), 11 states have internal predecessors, (436), 6 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) Word has length 465 [2023-04-01 22:26:27,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:26:28,568 INFO L225 Difference]: With dead ends: 423757 [2023-04-01 22:26:28,569 INFO L226 Difference]: Without dead ends: 292518 [2023-04-01 22:26:28,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 999 GetRequests, 960 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=446, Invalid=1194, Unknown=0, NotChecked=0, Total=1640 [2023-04-01 22:26:28,738 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 9462 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 31666 mSolverCounterSat, 3541 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9462 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 35207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3541 IncrementalHoareTripleChecker+Valid, 31666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:26:28,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9462 Valid, 616 Invalid, 35207 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3541 Valid, 31666 Invalid, 0 Unknown, 0 Unchecked, 20.6s Time] [2023-04-01 22:26:28,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292518 states. [2023-04-01 22:26:32,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292518 to 232475. [2023-04-01 22:26:33,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232475 states, 228093 states have (on average 1.0586252098924562) internal successors, (241465), 228896 states have internal predecessors, (241465), 1394 states have call successors, (1394), 1186 states have call predecessors, (1394), 2987 states have return successors, (31400), 2392 states have call predecessors, (31400), 1393 states have call successors, (31400) [2023-04-01 22:26:33,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232475 states to 232475 states and 274259 transitions. [2023-04-01 22:26:33,918 INFO L78 Accepts]: Start accepts. Automaton has 232475 states and 274259 transitions. Word has length 465 [2023-04-01 22:26:33,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:26:33,919 INFO L495 AbstractCegarLoop]: Abstraction has 232475 states and 274259 transitions. [2023-04-01 22:26:33,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 33.53846153846154) internal successors, (436), 11 states have internal predecessors, (436), 6 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 22:26:33,920 INFO L276 IsEmpty]: Start isEmpty. Operand 232475 states and 274259 transitions. [2023-04-01 22:26:34,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2023-04-01 22:26:34,246 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:26:34,247 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:26:34,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 22:26:34,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:34,453 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:26:34,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:26:34,454 INFO L85 PathProgramCache]: Analyzing trace with hash -402708354, now seen corresponding path program 1 times [2023-04-01 22:26:34,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:26:34,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714251203] [2023-04-01 22:26:34,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:34,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:26:34,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:34,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:26:34,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:34,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:26:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:34,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-01 22:26:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:34,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2023-04-01 22:26:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:34,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2023-04-01 22:26:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:35,113 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 193 proven. 4 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2023-04-01 22:26:35,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:26:35,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714251203] [2023-04-01 22:26:35,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714251203] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:26:35,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408758800] [2023-04-01 22:26:35,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:35,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:35,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:26:35,117 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 22:26:35,124 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 22:26:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:35,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:26:35,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:26:35,385 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2023-04-01 22:26:35,385 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:26:35,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408758800] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:26:35,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:26:35,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:26:35,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255191996] [2023-04-01 22:26:35,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:26:35,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:26:35,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:26:35,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:26:35,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:26:35,389 INFO L87 Difference]: Start difference. First operand 232475 states and 274259 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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 22:26:41,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:26:41,265 INFO L93 Difference]: Finished difference Result 464940 states and 548972 transitions. [2023-04-01 22:26:41,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:26:41,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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 623 [2023-04-01 22:26:41,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:26:41,990 INFO L225 Difference]: With dead ends: 464940 [2023-04-01 22:26:41,991 INFO L226 Difference]: Without dead ends: 232475 [2023-04-01 22:26:42,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 633 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 22:26:42,353 INFO L413 NwaCegarLoop]: 1055 mSDtfsCounter, 792 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2375 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 2793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 2375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:26:42,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 1087 Invalid, 2793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 2375 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-01 22:26:42,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232475 states. [2023-04-01 22:26:45,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232475 to 228626. [2023-04-01 22:26:45,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228626 states, 224288 states have (on average 1.0458027179340847) internal successors, (234561), 225090 states have internal predecessors, (234561), 1371 states have call successors, (1371), 1166 states have call predecessors, (1371), 2966 states have return successors, (24771), 2369 states have call predecessors, (24771), 1370 states have call successors, (24771) [2023-04-01 22:26:46,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228626 states to 228626 states and 260703 transitions. [2023-04-01 22:26:46,794 INFO L78 Accepts]: Start accepts. Automaton has 228626 states and 260703 transitions. Word has length 623 [2023-04-01 22:26:46,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:26:46,794 INFO L495 AbstractCegarLoop]: Abstraction has 228626 states and 260703 transitions. [2023-04-01 22:26:46,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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 22:26:46,795 INFO L276 IsEmpty]: Start isEmpty. Operand 228626 states and 260703 transitions. [2023-04-01 22:26:47,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1215 [2023-04-01 22:26:47,019 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:26:47,020 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:26:47,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-01 22:26:47,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-04-01 22:26:47,227 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:26:47,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:26:47,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1584847639, now seen corresponding path program 1 times [2023-04-01 22:26:47,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:26:47,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839918877] [2023-04-01 22:26:47,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:47,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:26:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:49,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:26:49,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:49,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:26:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:49,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:26:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:49,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2023-04-01 22:26:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:50,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2023-04-01 22:26:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:51,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:26:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:51,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:26:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:52,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 658 proven. 2 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2023-04-01 22:26:52,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:26:52,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839918877] [2023-04-01 22:26:52,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839918877] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:26:52,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632975227] [2023-04-01 22:26:52,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:52,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:52,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:26:52,229 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 22:26:52,232 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 22:26:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:52,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 1591 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 22:26:52,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:26:53,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 661 proven. 2 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2023-04-01 22:26:53,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:26:55,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 661 proven. 2 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2023-04-01 22:26:55,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632975227] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:26:55,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:26:55,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 6] total 13 [2023-04-01 22:26:55,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964970707] [2023-04-01 22:26:55,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:26:55,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 22:26:55,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:26:55,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 22:26:55,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2023-04-01 22:26:55,980 INFO L87 Difference]: Start difference. First operand 228626 states and 260703 transitions. Second operand has 13 states, 13 states have (on average 175.84615384615384) internal successors, (2286), 11 states have internal predecessors, (2286), 7 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2023-04-01 22:27:06,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:27:06,530 INFO L93 Difference]: Finished difference Result 509772 states and 585232 transitions. [2023-04-01 22:27:06,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-01 22:27:06,531 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 175.84615384615384) internal successors, (2286), 11 states have internal predecessors, (2286), 7 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) Word has length 1214 [2023-04-01 22:27:06,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:27:07,515 INFO L225 Difference]: With dead ends: 509772 [2023-04-01 22:27:07,515 INFO L226 Difference]: Without dead ends: 281156 [2023-04-01 22:27:07,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2470 GetRequests, 2444 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2023-04-01 22:27:07,902 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 2685 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 11949 mSolverCounterSat, 1219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2685 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 13168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1219 IncrementalHoareTripleChecker+Valid, 11949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-04-01 22:27:07,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2685 Valid, 241 Invalid, 13168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1219 Valid, 11949 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-04-01 22:27:08,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281156 states.