/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_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 22:32:44,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 22:32:44,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 22:32:44,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 22:32:44,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 22:32:44,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 22:32:44,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 22:32:44,089 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 22:32:44,103 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 22:32:44,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 22:32:44,104 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 22:32:44,104 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 22:32:44,104 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 22:32:44,104 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 22:32:44,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 22:32:44,105 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 22:32:44,105 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 22:32:44,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 22:32:44,105 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 22:32:44,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 22:32:44,105 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 22:32:44,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 22:32:44,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 22:32:44,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 22:32:44,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 22:32:44,106 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 22:32:44,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 22:32:44,106 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 22:32:44,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 22:32:44,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 22:32:44,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 22:32:44,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 22:32:44,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:32:44,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 22:32:44,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 22:32:44,107 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 22:32:44,107 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 22:32:44,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 22:32:44,108 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 22:32:44,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 22:32:44,108 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 22:32:44,108 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 22:32:44,108 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 22:32:44,108 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 22:32:44,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 22:32:44,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 22:32:44,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 22:32:44,270 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 22:32:44,271 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 22:32:44,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label50.c [2023-04-01 22:32:45,221 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 22:32:45,549 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 22:32:45,549 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label50.c [2023-04-01 22:32:45,578 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e64bd1426/0c0624edf92847a98122c7b69bcc4a86/FLAG10a771832 [2023-04-01 22:32:45,594 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e64bd1426/0c0624edf92847a98122c7b69bcc4a86 [2023-04-01 22:32:45,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 22:32:45,597 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 22:32:45,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 22:32:45,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 22:32:45,601 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 22:32:45,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:32:45" (1/1) ... [2023-04-01 22:32:45,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69ea6a81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:32:45, skipping insertion in model container [2023-04-01 22:32:45,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:32:45" (1/1) ... [2023-04-01 22:32:45,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 22:32:45,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 22:32:45,854 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_label50.c[2573,2586] [2023-04-01 22:32:46,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:32:46,438 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 22:32:46,456 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_label50.c[2573,2586] [2023-04-01 22:32:46,742 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:32:46,759 INFO L208 MainTranslator]: Completed translation [2023-04-01 22:32:46,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:32:46 WrapperNode [2023-04-01 22:32:46,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 22:32:46,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 22:32:46,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 22:32:46,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 22:32:46,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:32:46" (1/1) ... [2023-04-01 22:32:46,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:32:46" (1/1) ... [2023-04-01 22:32:46,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:32:46" (1/1) ... [2023-04-01 22:32:46,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:32:46" (1/1) ... [2023-04-01 22:32:46,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:32:46" (1/1) ... [2023-04-01 22:32:46,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:32:46" (1/1) ... [2023-04-01 22:32:46,908 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:32:46" (1/1) ... [2023-04-01 22:32:46,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:32:46" (1/1) ... [2023-04-01 22:32:46,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 22:32:46,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 22:32:46,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 22:32:46,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 22:32:46,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:32:46" (1/1) ... [2023-04-01 22:32:46,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:32:46,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:32:46,977 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 22:32:47,003 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 22:32:47,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 22:32:47,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 22:32:47,024 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 22:32:47,024 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 22:32:47,024 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 22:32:47,024 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 22:32:47,024 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 22:32:47,024 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 22:32:47,025 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 22:32:47,025 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 22:32:47,025 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 22:32:47,025 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 22:32:47,025 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 22:32:47,025 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 22:32:47,025 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 22:32:47,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 22:32:47,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 22:32:47,025 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 22:32:47,025 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 22:32:47,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 22:32:47,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 22:32:47,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 22:32:47,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 22:32:47,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 22:32:47,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 22:32:47,081 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 22:32:47,082 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 22:32:50,063 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 22:32:50,073 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 22:32:50,073 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 22:32:50,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:32:50 BoogieIcfgContainer [2023-04-01 22:32:50,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 22:32:50,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 22:32:50,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 22:32:50,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 22:32:50,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:32:45" (1/3) ... [2023-04-01 22:32:50,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c52197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:32:50, skipping insertion in model container [2023-04-01 22:32:50,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:32:46" (2/3) ... [2023-04-01 22:32:50,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c52197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:32:50, skipping insertion in model container [2023-04-01 22:32:50,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:32:50" (3/3) ... [2023-04-01 22:32:50,087 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label50.c [2023-04-01 22:32:50,099 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 22:32:50,099 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 22:32:50,157 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 22:32:50,161 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;@24505ea4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 22:32:50,161 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 22:32:50,167 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 22:32:50,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-01 22:32:50,173 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:32:50,173 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] [2023-04-01 22:32:50,174 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:32:50,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:32:50,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1852942637, now seen corresponding path program 1 times [2023-04-01 22:32:50,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:32:50,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95769855] [2023-04-01 22:32:50,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:32:50,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:32:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:50,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:32:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:50,518 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 22:32:50,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:32:50,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95769855] [2023-04-01 22:32:50,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95769855] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:32:50,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:32:50,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 22:32:50,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688465789] [2023-04-01 22:32:50,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:32:50,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:32:50,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:32:50,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:32:50,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:32:50,554 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 5.0) internal successors, (20), 3 states have internal predecessors, (20), 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 22:32:54,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:32:54,950 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2023-04-01 22:32:54,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 22:32:54,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 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 24 [2023-04-01 22:32:54,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:32:54,970 INFO L225 Difference]: With dead ends: 2471 [2023-04-01 22:32:54,971 INFO L226 Difference]: Without dead ends: 1568 [2023-04-01 22:32:54,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:32:54,982 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 3325 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3345 mSolverCounterSat, 1478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3325 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, 4.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:32:54,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3325 Valid, 46 Invalid, 4823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1478 Valid, 3345 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-04-01 22:32:54,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2023-04-01 22:32:55,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2023-04-01 22:32:55,081 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 22:32:55,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2863 transitions. [2023-04-01 22:32:55,087 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2863 transitions. Word has length 24 [2023-04-01 22:32:55,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:32:55,088 INFO L495 AbstractCegarLoop]: Abstraction has 1553 states and 2863 transitions. [2023-04-01 22:32:55,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 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 22:32:55,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2863 transitions. [2023-04-01 22:32:55,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-04-01 22:32:55,090 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:32:55,090 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 22:32:55,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 22:32:55,091 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:32:55,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:32:55,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1558737261, now seen corresponding path program 1 times [2023-04-01 22:32:55,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:32:55,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935420157] [2023-04-01 22:32:55,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:32:55,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:32:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:55,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:32:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:55,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:32:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:55,431 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:32:55,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:32:55,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935420157] [2023-04-01 22:32:55,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935420157] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:32:55,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:32:55,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 22:32:55,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182153127] [2023-04-01 22:32:55,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:32:55,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 22:32:55,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:32:55,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 22:32:55,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:32:55,435 INFO L87 Difference]: Start difference. First operand 1553 states and 2863 transitions. Second operand has 7 states, 6 states have (on average 14.5) internal successors, (87), 4 states have internal predecessors, (87), 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 22:33:00,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:33:00,532 INFO L93 Difference]: Finished difference Result 4757 states and 8776 transitions. [2023-04-01 22:33:00,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 22:33:00,533 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 4 states have internal predecessors, (87), 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 93 [2023-04-01 22:33:00,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:33:00,550 INFO L225 Difference]: With dead ends: 4757 [2023-04-01 22:33:00,551 INFO L226 Difference]: Without dead ends: 3210 [2023-04-01 22:33:00,557 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 22:33:00,561 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 3152 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 5597 mSolverCounterSat, 935 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s 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, 4.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:33:00,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3152 Valid, 124 Invalid, 6532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [935 Valid, 5597 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-04-01 22:33:00,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3210 states. [2023-04-01 22:33:00,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3210 to 3139. [2023-04-01 22:33:00,650 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 22:33:00,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 5141 transitions. [2023-04-01 22:33:00,659 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 5141 transitions. Word has length 93 [2023-04-01 22:33:00,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:33:00,660 INFO L495 AbstractCegarLoop]: Abstraction has 3139 states and 5141 transitions. [2023-04-01 22:33:00,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 4 states have internal predecessors, (87), 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 22:33:00,660 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 5141 transitions. [2023-04-01 22:33:00,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-01 22:33:00,666 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:33:00,666 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:33:00,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 22:33:00,666 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:33:00,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:33:00,667 INFO L85 PathProgramCache]: Analyzing trace with hash -78166297, now seen corresponding path program 1 times [2023-04-01 22:33:00,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:33:00,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974258538] [2023-04-01 22:33:00,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:33:00,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:33:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:00,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:33:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:00,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:33:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:00,907 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:33:00,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:33:00,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974258538] [2023-04-01 22:33:00,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974258538] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:33:00,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915909229] [2023-04-01 22:33:00,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:33:00,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:33:00,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:33:00,910 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 22:33:00,913 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 22:33:00,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:00,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 22:33:00,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:33:01,168 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 22:33:01,168 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:33:01,407 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 22:33:01,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915909229] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-01 22:33:01,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-01 22:33:01,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 4] total 12 [2023-04-01 22:33:01,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606952494] [2023-04-01 22:33:01,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:33:01,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 22:33:01,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:33:01,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 22:33:01,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:33:01,409 INFO L87 Difference]: Start difference. First operand 3139 states and 5141 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 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 22:33:04,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:33:04,356 INFO L93 Difference]: Finished difference Result 9473 states and 15733 transitions. [2023-04-01 22:33:04,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 22:33:04,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 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 99 [2023-04-01 22:33:04,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:33:04,386 INFO L225 Difference]: With dead ends: 9473 [2023-04-01 22:33:04,386 INFO L226 Difference]: Without dead ends: 6340 [2023-04-01 22:33:04,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 194 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:33:04,391 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 1561 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 2815 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1561 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 3813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-04-01 22:33:04,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1561 Valid, 74 Invalid, 3813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2815 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-04-01 22:33:04,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6340 states. [2023-04-01 22:33:04,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6340 to 6340. [2023-04-01 22:33:04,488 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 22:33:04,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6340 states to 6340 states and 9220 transitions. [2023-04-01 22:33:04,503 INFO L78 Accepts]: Start accepts. Automaton has 6340 states and 9220 transitions. Word has length 99 [2023-04-01 22:33:04,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:33:04,503 INFO L495 AbstractCegarLoop]: Abstraction has 6340 states and 9220 transitions. [2023-04-01 22:33:04,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 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 22:33:04,504 INFO L276 IsEmpty]: Start isEmpty. Operand 6340 states and 9220 transitions. [2023-04-01 22:33:04,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-04-01 22:33:04,509 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:33:04,509 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 22:33:04,519 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 22:33:04,714 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 22:33:04,714 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:33:04,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:33:04,715 INFO L85 PathProgramCache]: Analyzing trace with hash 149901116, now seen corresponding path program 1 times [2023-04-01 22:33:04,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:33:04,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407132120] [2023-04-01 22:33:04,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:33:04,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:33:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:04,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:33:04,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:04,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:33:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:05,061 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:33:05,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:33:05,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407132120] [2023-04-01 22:33:05,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407132120] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:33:05,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:33:05,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:33:05,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612425646] [2023-04-01 22:33:05,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:33:05,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:33:05,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:33:05,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:33:05,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:33:05,064 INFO L87 Difference]: Start difference. First operand 6340 states and 9220 transitions. Second operand has 8 states, 7 states have (on average 19.714285714285715) internal successors, (138), 5 states have internal predecessors, (138), 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 22:33:11,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:33:11,766 INFO L93 Difference]: Finished difference Result 26031 states and 40813 transitions. [2023-04-01 22:33:11,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:33:11,766 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 19.714285714285715) internal successors, (138), 5 states have internal predecessors, (138), 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 144 [2023-04-01 22:33:11,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:33:11,825 INFO L225 Difference]: With dead ends: 26031 [2023-04-01 22:33:11,825 INFO L226 Difference]: Without dead ends: 19697 [2023-04-01 22:33:11,838 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 22:33:11,839 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 6620 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 7246 mSolverCounterSat, 1659 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6620 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 8905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1659 IncrementalHoareTripleChecker+Valid, 7246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:33:11,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6620 Valid, 181 Invalid, 8905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1659 Valid, 7246 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-04-01 22:33:11,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19697 states. [2023-04-01 22:33:12,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19697 to 19607. [2023-04-01 22:33:12,235 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 22:33:12,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19607 states to 19607 states and 28268 transitions. [2023-04-01 22:33:12,276 INFO L78 Accepts]: Start accepts. Automaton has 19607 states and 28268 transitions. Word has length 144 [2023-04-01 22:33:12,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:33:12,277 INFO L495 AbstractCegarLoop]: Abstraction has 19607 states and 28268 transitions. [2023-04-01 22:33:12,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 19.714285714285715) internal successors, (138), 5 states have internal predecessors, (138), 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 22:33:12,278 INFO L276 IsEmpty]: Start isEmpty. Operand 19607 states and 28268 transitions. [2023-04-01 22:33:12,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-04-01 22:33:12,281 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:33:12,281 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:12,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 22:33:12,281 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:33:12,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:33:12,284 INFO L85 PathProgramCache]: Analyzing trace with hash -375675868, now seen corresponding path program 1 times [2023-04-01 22:33:12,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:33:12,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330294198] [2023-04-01 22:33:12,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:33:12,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:33:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:12,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:33:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:12,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:33:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:12,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-04-01 22:33:12,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:12,711 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 34 proven. 64 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 22:33:12,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:33:12,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330294198] [2023-04-01 22:33:12,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330294198] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:33:12,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376413437] [2023-04-01 22:33:12,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:33:12,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:33:12,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:33:12,713 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 22:33:12,744 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 22:33:12,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:12,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 22:33:12,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:33:12,995 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-01 22:33:12,996 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:33:12,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376413437] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:33:12,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:33:12,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-04-01 22:33:12,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313737802] [2023-04-01 22:33:12,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:33:12,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:33:12,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:33:12,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:33:12,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:33:13,013 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 22:33:16,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:33:16,962 INFO L93 Difference]: Finished difference Result 49064 states and 74924 transitions. [2023-04-01 22:33:16,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 22:33:16,963 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 245 [2023-04-01 22:33:16,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:33:17,072 INFO L225 Difference]: With dead ends: 49064 [2023-04-01 22:33:17,073 INFO L226 Difference]: Without dead ends: 29463 [2023-04-01 22:33:17,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 245 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 22:33:17,111 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 2149 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 4440 mSolverCounterSat, 1424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2149 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 5864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1424 IncrementalHoareTripleChecker+Valid, 4440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:33:17,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2149 Valid, 98 Invalid, 5864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1424 Valid, 4440 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-04-01 22:33:17,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29463 states. [2023-04-01 22:33:17,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29463 to 29253. [2023-04-01 22:33:17,741 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 22:33:17,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29253 states to 29253 states and 42777 transitions. [2023-04-01 22:33:17,797 INFO L78 Accepts]: Start accepts. Automaton has 29253 states and 42777 transitions. Word has length 245 [2023-04-01 22:33:17,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:33:17,797 INFO L495 AbstractCegarLoop]: Abstraction has 29253 states and 42777 transitions. [2023-04-01 22:33:17,798 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 22:33:17,798 INFO L276 IsEmpty]: Start isEmpty. Operand 29253 states and 42777 transitions. [2023-04-01 22:33:17,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-04-01 22:33:17,802 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:33:17,803 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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 22:33:17,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 22:33:18,008 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 22:33:18,009 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:33:18,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:33:18,009 INFO L85 PathProgramCache]: Analyzing trace with hash -3402402, now seen corresponding path program 1 times [2023-04-01 22:33:18,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:33:18,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826954302] [2023-04-01 22:33:18,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:33:18,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:33:18,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:18,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:33:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:18,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:33:18,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:18,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-01 22:33:18,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:18,557 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 22:33:18,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:33:18,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826954302] [2023-04-01 22:33:18,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826954302] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:33:18,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323535543] [2023-04-01 22:33:18,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:33:18,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:33:18,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:33:18,559 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 22:33:18,604 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 22:33:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:18,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:33:18,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:33:18,843 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:33:18,843 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:33:19,193 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:33:19,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323535543] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:33:19,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:33:19,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2023-04-01 22:33:19,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371700042] [2023-04-01 22:33:19,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:33:19,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 22:33:19,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:33:19,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 22:33:19,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-04-01 22:33:19,196 INFO L87 Difference]: Start difference. First operand 29253 states and 42777 transitions. Second operand has 13 states, 13 states have (on average 41.69230769230769) internal successors, (542), 11 states have internal predecessors, (542), 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 22:33:30,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:33:30,293 INFO L93 Difference]: Finished difference Result 146754 states and 239558 transitions. [2023-04-01 22:33:30,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-01 22:33:30,294 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 41.69230769230769) internal successors, (542), 11 states have internal predecessors, (542), 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 295 [2023-04-01 22:33:30,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:33:30,694 INFO L225 Difference]: With dead ends: 146754 [2023-04-01 22:33:30,694 INFO L226 Difference]: Without dead ends: 117507 [2023-04-01 22:33:30,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 596 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 22:33:30,767 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 8328 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 11259 mSolverCounterSat, 3823 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8328 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 15082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3823 IncrementalHoareTripleChecker+Valid, 11259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:33:30,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8328 Valid, 314 Invalid, 15082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3823 Valid, 11259 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2023-04-01 22:33:31,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117507 states. [2023-04-01 22:33:33,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117507 to 92785. [2023-04-01 22:33:33,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92785 states, 90663 states have (on average 1.2126666887263824) internal successors, (109944), 91171 states have internal predecessors, (109944), 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 22:33:33,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92785 states to 92785 states and 135877 transitions. [2023-04-01 22:33:33,546 INFO L78 Accepts]: Start accepts. Automaton has 92785 states and 135877 transitions. Word has length 295 [2023-04-01 22:33:33,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:33:33,547 INFO L495 AbstractCegarLoop]: Abstraction has 92785 states and 135877 transitions. [2023-04-01 22:33:33,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 41.69230769230769) internal successors, (542), 11 states have internal predecessors, (542), 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 22:33:33,547 INFO L276 IsEmpty]: Start isEmpty. Operand 92785 states and 135877 transitions. [2023-04-01 22:33:33,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-04-01 22:33:33,550 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:33:33,551 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:33,558 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 22:33:33,760 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 22:33:33,761 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:33:33,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:33:33,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1700701479, now seen corresponding path program 1 times [2023-04-01 22:33:33,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:33:33,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878471544] [2023-04-01 22:33:33,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:33:33,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:33:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:33,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:33:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:33,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:33:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:34,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:33:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:34,172 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:33:34,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:33:34,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878471544] [2023-04-01 22:33:34,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878471544] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:33:34,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719459535] [2023-04-01 22:33:34,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:33:34,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:33:34,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:33:34,173 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 22:33:34,178 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 22:33:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:34,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:33:34,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:33:34,432 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:33:34,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:33:34,761 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:33:34,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719459535] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:33:34,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:33:34,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 22:33:34,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779757560] [2023-04-01 22:33:34,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:33:34,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 22:33:34,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:33:34,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 22:33:34,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:33:34,763 INFO L87 Difference]: Start difference. First operand 92785 states and 135877 transitions. Second operand has 12 states, 12 states have (on average 45.25) internal successors, (543), 10 states have internal predecessors, (543), 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 22:33:44,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:33:44,963 INFO L93 Difference]: Finished difference Result 218121 states and 328259 transitions. [2023-04-01 22:33:44,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-01 22:33:44,965 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 45.25) internal successors, (543), 10 states have internal predecessors, (543), 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 298 [2023-04-01 22:33:44,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:33:45,536 INFO L225 Difference]: With dead ends: 218121 [2023-04-01 22:33:45,537 INFO L226 Difference]: Without dead ends: 125342 [2023-04-01 22:33:45,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 602 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 22:33:45,687 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 5335 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 14015 mSolverCounterSat, 2170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5338 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 16185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2170 IncrementalHoareTripleChecker+Valid, 14015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:33:45,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5338 Valid, 232 Invalid, 16185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2170 Valid, 14015 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2023-04-01 22:33:45,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125342 states. [2023-04-01 22:33:47,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125342 to 118907. [2023-04-01 22:33:47,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118907 states, 116267 states have (on average 1.1361091281274995) internal successors, (132092), 116835 states have internal predecessors, (132092), 711 states have call successors, (711), 602 states have call predecessors, (711), 1928 states have return successors, (29195), 1469 states have call predecessors, (29195), 710 states have call successors, (29195) [2023-04-01 22:33:48,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118907 states to 118907 states and 161998 transitions. [2023-04-01 22:33:48,263 INFO L78 Accepts]: Start accepts. Automaton has 118907 states and 161998 transitions. Word has length 298 [2023-04-01 22:33:48,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:33:48,263 INFO L495 AbstractCegarLoop]: Abstraction has 118907 states and 161998 transitions. [2023-04-01 22:33:48,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 45.25) internal successors, (543), 10 states have internal predecessors, (543), 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 22:33:48,263 INFO L276 IsEmpty]: Start isEmpty. Operand 118907 states and 161998 transitions. [2023-04-01 22:33:48,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2023-04-01 22:33:48,269 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:33:48,269 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-04-01 22:33:48,289 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-04-01 22:33:48,473 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 22:33:48,474 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:33:48,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:33:48,474 INFO L85 PathProgramCache]: Analyzing trace with hash -60099956, now seen corresponding path program 1 times [2023-04-01 22:33:48,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:33:48,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315133701] [2023-04-01 22:33:48,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:33:48,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:33:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:48,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:33:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:48,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:33:48,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:48,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:33:48,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:48,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-04-01 22:33:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:48,837 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-01 22:33:48,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:33:48,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315133701] [2023-04-01 22:33:48,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315133701] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:33:48,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627322541] [2023-04-01 22:33:48,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:33:48,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:33:48,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:33:48,839 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 22:33:48,841 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 22:33:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:48,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:33:48,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:33:49,078 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-04-01 22:33:49,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:33:49,242 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-04-01 22:33:49,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627322541] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:33:49,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:33:49,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 22:33:49,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852656227] [2023-04-01 22:33:49,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:33:49,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 22:33:49,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:33:49,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 22:33:49,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:33:49,244 INFO L87 Difference]: Start difference. First operand 118907 states and 161998 transitions. Second operand has 12 states, 12 states have (on average 30.916666666666668) internal successors, (371), 10 states have internal predecessors, (371), 4 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 22:33:58,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:33:58,115 INFO L93 Difference]: Finished difference Result 265009 states and 356026 transitions. [2023-04-01 22:33:58,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-01 22:33:58,115 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 30.916666666666668) internal successors, (371), 10 states have internal predecessors, (371), 4 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 314 [2023-04-01 22:33:58,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:33:58,783 INFO L225 Difference]: With dead ends: 265009 [2023-04-01 22:33:58,784 INFO L226 Difference]: Without dead ends: 141865 [2023-04-01 22:33:58,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 637 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2023-04-01 22:33:58,982 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 7241 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 11599 mSolverCounterSat, 1899 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7251 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 13498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1899 IncrementalHoareTripleChecker+Valid, 11599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:33:58,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7251 Valid, 217 Invalid, 13498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1899 Valid, 11599 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-04-01 22:33:59,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141865 states. [2023-04-01 22:34:01,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141865 to 140282. [2023-04-01 22:34:01,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140282 states, 137450 states have (on average 1.096071298654056) internal successors, (150655), 138019 states have internal predecessors, (150655), 819 states have call successors, (819), 714 states have call predecessors, (819), 2012 states have return successors, (27508), 1548 states have call predecessors, (27508), 818 states have call successors, (27508) [2023-04-01 22:34:01,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140282 states to 140282 states and 178982 transitions. [2023-04-01 22:34:01,627 INFO L78 Accepts]: Start accepts. Automaton has 140282 states and 178982 transitions. Word has length 314 [2023-04-01 22:34:01,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:34:01,628 INFO L495 AbstractCegarLoop]: Abstraction has 140282 states and 178982 transitions. [2023-04-01 22:34:01,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 30.916666666666668) internal successors, (371), 10 states have internal predecessors, (371), 4 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 22:34:01,628 INFO L276 IsEmpty]: Start isEmpty. Operand 140282 states and 178982 transitions. [2023-04-01 22:34:01,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2023-04-01 22:34:01,640 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:34:01,640 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:34:01,661 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 22:34:01,845 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 22:34:01,846 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:34:01,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:34:01,846 INFO L85 PathProgramCache]: Analyzing trace with hash -78111816, now seen corresponding path program 1 times [2023-04-01 22:34:01,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:34:01,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809664426] [2023-04-01 22:34:01,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:34:01,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:34:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:02,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:34:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:02,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:34:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:02,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-01 22:34:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:02,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2023-04-01 22:34:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:02,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2023-04-01 22:34:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:02,602 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 273 proven. 13 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2023-04-01 22:34:02,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:34:02,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809664426] [2023-04-01 22:34:02,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809664426] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:34:02,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246138709] [2023-04-01 22:34:02,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:34:02,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:34:02,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:34:02,604 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 22:34:02,606 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 22:34:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:02,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:34:02,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:34:02,835 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 279 proven. 2 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2023-04-01 22:34:02,836 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:34:03,036 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 279 proven. 2 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2023-04-01 22:34:03,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246138709] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:34:03,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:34:03,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2023-04-01 22:34:03,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955684001] [2023-04-01 22:34:03,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:34:03,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 22:34:03,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:34:03,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 22:34:03,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-04-01 22:34:03,039 INFO L87 Difference]: Start difference. First operand 140282 states and 178982 transitions. Second operand has 15 states, 15 states have (on average 24.933333333333334) internal successors, (374), 13 states have internal predecessors, (374), 5 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 22:34:14,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:34:14,796 INFO L93 Difference]: Finished difference Result 282297 states and 359984 transitions. [2023-04-01 22:34:14,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-04-01 22:34:14,797 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 24.933333333333334) internal successors, (374), 13 states have internal predecessors, (374), 5 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 433 [2023-04-01 22:34:14,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:34:15,227 INFO L225 Difference]: With dead ends: 282297 [2023-04-01 22:34:15,228 INFO L226 Difference]: Without dead ends: 142788 [2023-04-01 22:34:15,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 917 GetRequests, 886 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=221, Invalid=771, Unknown=0, NotChecked=0, Total=992 [2023-04-01 22:34:15,348 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 9253 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 18294 mSolverCounterSat, 2086 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9253 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 20380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2086 IncrementalHoareTripleChecker+Valid, 18294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:34:15,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9253 Valid, 342 Invalid, 20380 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2086 Valid, 18294 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2023-04-01 22:34:15,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142788 states. [2023-04-01 22:34:17,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142788 to 117890. [2023-04-01 22:34:17,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117890 states, 115341 states have (on average 1.051091979434893) internal successors, (121234), 115885 states have internal predecessors, (121234), 682 states have call successors, (682), 598 states have call predecessors, (682), 1866 states have return successors, (11685), 1406 states have call predecessors, (11685), 681 states have call successors, (11685) [2023-04-01 22:34:17,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117890 states to 117890 states and 133601 transitions. [2023-04-01 22:34:17,479 INFO L78 Accepts]: Start accepts. Automaton has 117890 states and 133601 transitions. Word has length 433 [2023-04-01 22:34:17,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:34:17,480 INFO L495 AbstractCegarLoop]: Abstraction has 117890 states and 133601 transitions. [2023-04-01 22:34:17,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 24.933333333333334) internal successors, (374), 13 states have internal predecessors, (374), 5 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 22:34:17,480 INFO L276 IsEmpty]: Start isEmpty. Operand 117890 states and 133601 transitions. [2023-04-01 22:34:17,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2023-04-01 22:34:17,494 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:34:17,494 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 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 22:34:17,499 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 22:34:17,699 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 22:34:17,700 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:34:17,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:34:17,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1823880417, now seen corresponding path program 1 times [2023-04-01 22:34:17,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:34:17,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754965168] [2023-04-01 22:34:17,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:34:17,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:34:17,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:18,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:34:18,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:18,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:34:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:18,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:34:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:18,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2023-04-01 22:34:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:18,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2023-04-01 22:34:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:18,493 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 82 proven. 4 refuted. 0 times theorem prover too weak. 497 trivial. 0 not checked. [2023-04-01 22:34:18,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:34:18,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754965168] [2023-04-01 22:34:18,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754965168] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:34:18,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120582922] [2023-04-01 22:34:18,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:34:18,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:34:18,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:34:18,495 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 22:34:18,497 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 22:34:18,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:18,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:34:18,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:34:18,696 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2023-04-01 22:34:18,697 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:34:18,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120582922] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:34:18,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:34:18,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-04-01 22:34:18,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033947629] [2023-04-01 22:34:18,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:34:18,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:34:18,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:34:18,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:34:18,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:34:18,700 INFO L87 Difference]: Start difference. First operand 117890 states and 133601 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 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 22:34:22,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:34:22,357 INFO L93 Difference]: Finished difference Result 255802 states and 291768 transitions. [2023-04-01 22:34:22,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:34:22,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 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 484 [2023-04-01 22:34:22,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:34:22,792 INFO L225 Difference]: With dead ends: 255802 [2023-04-01 22:34:22,792 INFO L226 Difference]: Without dead ends: 138685 [2023-04-01 22:34:22,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 495 SyntacticMatches, 3 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 22:34:22,879 INFO L413 NwaCegarLoop]: 1151 mSDtfsCounter, 869 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2114 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 2539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 2114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:34:22,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 1183 Invalid, 2539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 2114 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-01 22:34:22,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138685 states. [2023-04-01 22:34:24,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138685 to 130965. [2023-04-01 22:34:24,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130965 states, 128273 states have (on average 1.0473911111457594) internal successors, (134352), 128815 states have internal predecessors, (134352), 763 states have call successors, (763), 666 states have call predecessors, (763), 1928 states have return successors, (12332), 1483 states have call predecessors, (12332), 762 states have call successors, (12332) [2023-04-01 22:34:25,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130965 states to 130965 states and 147447 transitions. [2023-04-01 22:34:25,129 INFO L78 Accepts]: Start accepts. Automaton has 130965 states and 147447 transitions. Word has length 484 [2023-04-01 22:34:25,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:34:25,130 INFO L495 AbstractCegarLoop]: Abstraction has 130965 states and 147447 transitions. [2023-04-01 22:34:25,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 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 22:34:25,130 INFO L276 IsEmpty]: Start isEmpty. Operand 130965 states and 147447 transitions. [2023-04-01 22:34:25,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2023-04-01 22:34:25,149 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:34:25,150 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:34:25,156 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 22:34:25,356 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 22:34:25,357 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:34:25,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:34:25,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1215741159, now seen corresponding path program 1 times [2023-04-01 22:34:25,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:34:25,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702572935] [2023-04-01 22:34:25,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:34:25,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:34:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:25,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:34:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:25,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:34:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:25,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-01 22:34:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:25,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-01 22:34:25,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:25,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-04-01 22:34:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:26,148 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 400 proven. 4 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-04-01 22:34:26,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:34:26,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702572935] [2023-04-01 22:34:26,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702572935] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:34:26,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660979570] [2023-04-01 22:34:26,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:34:26,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:34:26,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:34:26,150 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 22:34:26,152 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 22:34:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:26,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:34:26,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:34:26,546 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 402 proven. 2 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-04-01 22:34:26,546 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:34:27,022 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 402 proven. 2 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-04-01 22:34:27,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660979570] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:34:27,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:34:27,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 10 [2023-04-01 22:34:27,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113718813] [2023-04-01 22:34:27,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:34:27,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 22:34:27,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:34:27,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 22:34:27,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-04-01 22:34:27,025 INFO L87 Difference]: Start difference. First operand 130965 states and 147447 transitions. Second operand has 10 states, 10 states have (on average 73.5) internal successors, (735), 8 states have internal predecessors, (735), 4 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 22:34:36,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:34:36,391 INFO L93 Difference]: Finished difference Result 362077 states and 415266 transitions. [2023-04-01 22:34:36,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-01 22:34:36,391 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 73.5) internal successors, (735), 8 states have internal predecessors, (735), 4 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 544 [2023-04-01 22:34:36,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:34:37,022 INFO L225 Difference]: With dead ends: 362077 [2023-04-01 22:34:37,022 INFO L226 Difference]: Without dead ends: 231885 [2023-04-01 22:34:37,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1126 GetRequests, 1106 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2023-04-01 22:34:37,302 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 6003 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 7124 mSolverCounterSat, 2185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6003 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 9309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2185 IncrementalHoareTripleChecker+Valid, 7124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:34:37,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6003 Valid, 185 Invalid, 9309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2185 Valid, 7124 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-04-01 22:34:37,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231885 states. [2023-04-01 22:34:40,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231885 to 219462. [2023-04-01 22:34:40,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219462 states, 215470 states have (on average 1.0443542024411752) internal successors, (225027), 216187 states have internal predecessors, (225027), 1289 states have call successors, (1289), 1122 states have call predecessors, (1289), 2702 states have return successors, (22993), 2152 states have call predecessors, (22993), 1288 states have call successors, (22993) [2023-04-01 22:34:41,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219462 states to 219462 states and 249309 transitions. [2023-04-01 22:34:41,674 INFO L78 Accepts]: Start accepts. Automaton has 219462 states and 249309 transitions. Word has length 544 [2023-04-01 22:34:41,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:34:41,675 INFO L495 AbstractCegarLoop]: Abstraction has 219462 states and 249309 transitions. [2023-04-01 22:34:41,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 73.5) internal successors, (735), 8 states have internal predecessors, (735), 4 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 22:34:41,675 INFO L276 IsEmpty]: Start isEmpty. Operand 219462 states and 249309 transitions. [2023-04-01 22:34:41,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1051 [2023-04-01 22:34:41,967 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:34:41,967 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:34:41,980 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 22:34:42,172 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 22:34:42,173 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:34:42,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:34:42,174 INFO L85 PathProgramCache]: Analyzing trace with hash -889034091, now seen corresponding path program 1 times [2023-04-01 22:34:42,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:34:42,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646089769] [2023-04-01 22:34:42,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:34:42,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:34:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:43,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:34:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:43,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:34:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:43,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-01 22:34:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:43,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-01 22:34:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:43,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:34:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:43,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:34:43,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:43,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 844 [2023-04-01 22:34:43,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:43,635 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 163 proven. 176 refuted. 0 times theorem prover too weak. 487 trivial. 0 not checked. [2023-04-01 22:34:43,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:34:43,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646089769] [2023-04-01 22:34:43,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646089769] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:34:43,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292363790] [2023-04-01 22:34:43,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:34:43,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:34:43,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:34:43,637 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 22:34:43,664 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 22:34:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:43,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:34:43,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:34:44,172 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 598 proven. 2 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-04-01 22:34:44,173 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:34:44,436 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 164 proven. 178 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2023-04-01 22:34:44,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292363790] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:34:44,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:34:44,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 22:34:44,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435647558] [2023-04-01 22:34:44,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:34:44,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 22:34:44,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:34:44,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 22:34:44,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:34:44,440 INFO L87 Difference]: Start difference. First operand 219462 states and 249309 transitions. Second operand has 12 states, 12 states have (on average 121.75) internal successors, (1461), 10 states have internal predecessors, (1461), 5 states have call successors, (17), 6 states have call predecessors, (17), 7 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-04-01 22:34:57,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:34:57,798 INFO L93 Difference]: Finished difference Result 492580 states and 567012 transitions. [2023-04-01 22:34:57,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-01 22:34:57,799 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 121.75) internal successors, (1461), 10 states have internal predecessors, (1461), 5 states have call successors, (17), 6 states have call predecessors, (17), 7 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 1050 [2023-04-01 22:34:57,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:34:58,620 INFO L225 Difference]: With dead ends: 492580 [2023-04-01 22:34:58,621 INFO L226 Difference]: Without dead ends: 273891 [2023-04-01 22:34:58,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2140 GetRequests, 2118 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2023-04-01 22:34:58,899 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 4169 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 18083 mSolverCounterSat, 1456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4173 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 19539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1456 IncrementalHoareTripleChecker+Valid, 18083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:34:58,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4173 Valid, 320 Invalid, 19539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1456 Valid, 18083 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2023-04-01 22:34:59,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273891 states. [2023-04-01 22:35:02,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273891 to 251325. [2023-04-01 22:35:02,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251325 states, 246562 states have (on average 1.031801331916516) internal successors, (254403), 247464 states have internal predecessors, (254403), 1464 states have call successors, (1464), 1282 states have call predecessors, (1464), 3298 states have return successors, (20240), 2578 states have call predecessors, (20240), 1463 states have call successors, (20240) [2023-04-01 22:35:03,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251325 states to 251325 states and 276107 transitions. [2023-04-01 22:35:03,092 INFO L78 Accepts]: Start accepts. Automaton has 251325 states and 276107 transitions. Word has length 1050 [2023-04-01 22:35:03,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:35:03,092 INFO L495 AbstractCegarLoop]: Abstraction has 251325 states and 276107 transitions. [2023-04-01 22:35:03,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 121.75) internal successors, (1461), 10 states have internal predecessors, (1461), 5 states have call successors, (17), 6 states have call predecessors, (17), 7 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-04-01 22:35:03,093 INFO L276 IsEmpty]: Start isEmpty. Operand 251325 states and 276107 transitions. [2023-04-01 22:35:03,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1134 [2023-04-01 22:35:03,502 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:35:03,502 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:35:03,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-04-01 22:35:03,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:35:03,704 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:35:03,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:35:03,704 INFO L85 PathProgramCache]: Analyzing trace with hash 823274541, now seen corresponding path program 1 times [2023-04-01 22:35:03,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:35:03,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050272508] [2023-04-01 22:35:03,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:35:03,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:35:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:04,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:35:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:04,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:35:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:04,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:35:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:04,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2023-04-01 22:35:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:04,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2023-04-01 22:35:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:04,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:35:04,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:04,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:35:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:04,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 927 [2023-04-01 22:35:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:04,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 178 proven. 245 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2023-04-01 22:35:04,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:35:04,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050272508] [2023-04-01 22:35:04,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050272508] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:35:04,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672420175] [2023-04-01 22:35:04,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:35:04,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:35:04,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:35:04,675 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:35:04,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-01 22:35:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:05,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 1556 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:35:05,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:35:05,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 751 proven. 2 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2023-04-01 22:35:05,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:35:05,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 179 proven. 248 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2023-04-01 22:35:05,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672420175] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:35:05,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:35:05,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:35:05,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268168081] [2023-04-01 22:35:05,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:35:05,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:35:05,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:35:05,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:35:05,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:35:05,398 INFO L87 Difference]: Start difference. First operand 251325 states and 276107 transitions. Second operand has 11 states, 11 states have (on average 130.9090909090909) internal successors, (1440), 9 states have internal predecessors, (1440), 4 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-04-01 22:35:13,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:35:13,866 INFO L93 Difference]: Finished difference Result 501891 states and 551518 transitions. [2023-04-01 22:35:13,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:35:13,867 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 130.9090909090909) internal successors, (1440), 9 states have internal predecessors, (1440), 4 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 1133 [2023-04-01 22:35:13,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:35:14,630 INFO L225 Difference]: With dead ends: 501891 [2023-04-01 22:35:14,630 INFO L226 Difference]: Without dead ends: 251339 [2023-04-01 22:35:14,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2302 GetRequests, 2283 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2023-04-01 22:35:14,807 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 3483 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 10089 mSolverCounterSat, 1266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3483 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 11355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1266 IncrementalHoareTripleChecker+Valid, 10089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:35:14,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3483 Valid, 211 Invalid, 11355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1266 Valid, 10089 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-04-01 22:35:14,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251339 states. [2023-04-01 22:35:18,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251339 to 251248. [2023-04-01 22:35:18,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251248 states, 246514 states have (on average 1.0284527450773586) internal successors, (253528), 247406 states have internal predecessors, (253528), 1464 states have call successors, (1464), 1282 states have call predecessors, (1464), 3269 states have return successors, (18168), 2559 states have call predecessors, (18168), 1463 states have call successors, (18168) [2023-04-01 22:35:18,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251248 states to 251248 states and 273160 transitions. [2023-04-01 22:35:18,918 INFO L78 Accepts]: Start accepts. Automaton has 251248 states and 273160 transitions. Word has length 1133 [2023-04-01 22:35:18,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:35:18,919 INFO L495 AbstractCegarLoop]: Abstraction has 251248 states and 273160 transitions. [2023-04-01 22:35:18,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.9090909090909) internal successors, (1440), 9 states have internal predecessors, (1440), 4 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-04-01 22:35:18,919 INFO L276 IsEmpty]: Start isEmpty. Operand 251248 states and 273160 transitions. [2023-04-01 22:35:19,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1305 [2023-04-01 22:35:19,114 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:35:19,115 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:35:19,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-01 22:35:19,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-01 22:35:19,321 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:35:19,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:35:19,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1603881195, now seen corresponding path program 1 times [2023-04-01 22:35:19,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:35:19,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698151462] [2023-04-01 22:35:19,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:35:19,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:35:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:20,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:35:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:20,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:35:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:20,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:35:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:20,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-04-01 22:35:20,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:20,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2023-04-01 22:35:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:20,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2023-04-01 22:35:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:20,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:35:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:21,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:35:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:21,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1098 [2023-04-01 22:35:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:21,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 614 proven. 189 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2023-04-01 22:35:21,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:35:21,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698151462] [2023-04-01 22:35:21,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698151462] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:35:21,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269385483] [2023-04-01 22:35:21,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:35:21,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:35:21,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:35:21,229 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:35:21,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-01 22:35:21,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:21,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 22:35:21,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:35:22,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 1267 proven. 2 refuted. 0 times theorem prover too weak. 606 trivial. 0 not checked. [2023-04-01 22:35:22,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:35:23,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 618 proven. 190 refuted. 0 times theorem prover too weak. 1067 trivial. 0 not checked. [2023-04-01 22:35:23,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269385483] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:35:23,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:35:23,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:35:23,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115266412] [2023-04-01 22:35:23,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:35:23,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:35:23,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:35:23,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:35:23,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:35:23,591 INFO L87 Difference]: Start difference. First operand 251248 states and 273160 transitions. Second operand has 11 states, 11 states have (on average 195.9090909090909) internal successors, (2155), 9 states have internal predecessors, (2155), 7 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) [2023-04-01 22:35:32,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:35:32,513 INFO L93 Difference]: Finished difference Result 504294 states and 548902 transitions. [2023-04-01 22:35:32,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 22:35:32,516 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 195.9090909090909) internal successors, (2155), 9 states have internal predecessors, (2155), 7 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) Word has length 1304 [2023-04-01 22:35:32,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:35:33,167 INFO L225 Difference]: With dead ends: 504294 [2023-04-01 22:35:33,168 INFO L226 Difference]: Without dead ends: 251490 [2023-04-01 22:35:33,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2652 GetRequests, 2629 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 22:35:33,465 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 3842 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 9189 mSolverCounterSat, 975 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3842 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 10164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 975 IncrementalHoareTripleChecker+Valid, 9189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:35:33,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3842 Valid, 210 Invalid, 10164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [975 Valid, 9189 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-04-01 22:35:33,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251490 states. [2023-04-01 22:35:36,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251490 to 242670. [2023-04-01 22:35:36,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242670 states, 238076 states have (on average 1.0230766645944993) internal successors, (243570), 238947 states have internal predecessors, (243570), 1414 states have call successors, (1414), 1238 states have call predecessors, (1414), 3179 states have return successors, (14227), 2484 states have call predecessors, (14227), 1413 states have call successors, (14227) [2023-04-01 22:35:37,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242670 states to 242670 states and 259211 transitions. [2023-04-01 22:35:37,580 INFO L78 Accepts]: Start accepts. Automaton has 242670 states and 259211 transitions. Word has length 1304 [2023-04-01 22:35:37,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:35:37,580 INFO L495 AbstractCegarLoop]: Abstraction has 242670 states and 259211 transitions. [2023-04-01 22:35:37,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 195.9090909090909) internal successors, (2155), 9 states have internal predecessors, (2155), 7 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) [2023-04-01 22:35:37,581 INFO L276 IsEmpty]: Start isEmpty. Operand 242670 states and 259211 transitions. [2023-04-01 22:35:37,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1582 [2023-04-01 22:35:37,781 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:35:37,781 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2023-04-01 22:35:37,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-04-01 22:35:37,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-04-01 22:35:37,990 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:35:37,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:35:37,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1474911892, now seen corresponding path program 1 times [2023-04-01 22:35:37,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:35:37,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430457378] [2023-04-01 22:35:37,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:35:37,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:35:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:38,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:35:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:38,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:35:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:38,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-01 22:35:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:38,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2023-04-01 22:35:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:39,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2023-04-01 22:35:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:39,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 604 [2023-04-01 22:35:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:39,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 688 [2023-04-01 22:35:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:39,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 778 [2023-04-01 22:35:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:39,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:35:39,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:39,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:35:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:39,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1375 [2023-04-01 22:35:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:39,466 INFO L134 CoverageAnalysis]: Checked inductivity of 3412 backedges. 600 proven. 526 refuted. 0 times theorem prover too weak. 2286 trivial. 0 not checked. [2023-04-01 22:35:39,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:35:39,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430457378] [2023-04-01 22:35:39,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430457378] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:35:39,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388325215] [2023-04-01 22:35:39,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:35:39,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:35:39,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:35:39,468 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:35:39,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-04-01 22:35:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:39,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 2135 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 22:35:39,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:35:40,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3412 backedges. 2229 proven. 2 refuted. 0 times theorem prover too weak. 1181 trivial. 0 not checked. [2023-04-01 22:35:40,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:35:41,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3412 backedges. 527 proven. 248 refuted. 0 times theorem prover too weak. 2637 trivial. 0 not checked. [2023-04-01 22:35:41,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388325215] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:35:41,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:35:41,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 22:35:41,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140452363] [2023-04-01 22:35:41,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:35:41,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 22:35:41,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:35:41,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 22:35:41,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:35:41,549 INFO L87 Difference]: Start difference. First operand 242670 states and 259211 transitions. Second operand has 12 states, 12 states have (on average 128.91666666666666) internal successors, (1547), 10 states have internal predecessors, (1547), 5 states have call successors, (17), 6 states have call predecessors, (17), 7 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14)