/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/Problem03_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 20:33:23,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 20:33:23,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 20:33:23,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 20:33:23,198 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 20:33:23,228 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 20:33:23,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 20:33:23,229 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 20:33:23,229 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 20:33:23,230 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 20:33:23,231 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 20:33:23,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 20:33:23,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 20:33:23,231 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 20:33:23,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 20:33:23,232 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 20:33:23,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 20:33:23,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 20:33:23,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 20:33:23,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 20:33:23,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 20:33:23,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 20:33:23,233 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 20:33:23,234 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 20:33:23,234 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 20:33:23,234 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 20:33:23,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 20:33:23,234 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 20:33:23,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 20:33:23,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:33:23,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 20:33:23,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 20:33:23,235 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 20:33:23,235 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 20:33:23,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 20:33:23,236 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 20:33:23,236 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 20:33:23,236 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 20:33:23,236 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 20:33:23,236 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 20:33:23,236 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 20:33:23,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 20:33:23,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 20:33:23,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 20:33:23,484 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 20:33:23,484 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 20:33:23,485 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label55.c [2023-04-01 20:33:24,691 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 20:33:25,052 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 20:33:25,052 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label55.c [2023-04-01 20:33:25,067 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32ba4874f/25af55d67567489b9356c65b2b9273d8/FLAG825080bc7 [2023-04-01 20:33:25,088 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32ba4874f/25af55d67567489b9356c65b2b9273d8 [2023-04-01 20:33:25,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 20:33:25,092 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 20:33:25,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 20:33:25,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 20:33:25,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 20:33:25,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:33:25" (1/1) ... [2023-04-01 20:33:25,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69ca4151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:33:25, skipping insertion in model container [2023-04-01 20:33:25,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:33:25" (1/1) ... [2023-04-01 20:33:25,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 20:33:25,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 20:33:25,646 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/Problem03_label55.c[56086,56099] [2023-04-01 20:33:25,678 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:33:25,689 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 20:33:25,869 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/Problem03_label55.c[56086,56099] [2023-04-01 20:33:25,882 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:33:25,897 INFO L208 MainTranslator]: Completed translation [2023-04-01 20:33:25,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:33:25 WrapperNode [2023-04-01 20:33:25,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 20:33:25,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 20:33:25,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 20:33:25,899 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 20:33:25,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:33:25" (1/1) ... [2023-04-01 20:33:25,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:33:25" (1/1) ... [2023-04-01 20:33:25,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:33:25" (1/1) ... [2023-04-01 20:33:25,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:33:25" (1/1) ... [2023-04-01 20:33:26,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:33:25" (1/1) ... [2023-04-01 20:33:26,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:33:25" (1/1) ... [2023-04-01 20:33:26,039 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:33:25" (1/1) ... [2023-04-01 20:33:26,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:33:25" (1/1) ... [2023-04-01 20:33:26,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 20:33:26,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 20:33:26,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 20:33:26,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 20:33:26,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:33:25" (1/1) ... [2023-04-01 20:33:26,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:33:26,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:33:26,094 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 20:33:26,117 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 20:33:26,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 20:33:26,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 20:33:26,137 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 20:33:26,137 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 20:33:26,137 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 20:33:26,137 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 20:33:26,138 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 20:33:26,138 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 20:33:26,138 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 20:33:26,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 20:33:26,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 20:33:26,138 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 20:33:26,138 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 20:33:26,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 20:33:26,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 20:33:26,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 20:33:26,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 20:33:26,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 20:33:26,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 20:33:26,263 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 20:33:26,265 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 20:33:27,767 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 20:33:27,781 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 20:33:27,781 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 20:33:27,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:33:27 BoogieIcfgContainer [2023-04-01 20:33:27,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 20:33:27,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 20:33:27,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 20:33:27,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 20:33:27,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 08:33:25" (1/3) ... [2023-04-01 20:33:27,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b88810d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:33:27, skipping insertion in model container [2023-04-01 20:33:27,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:33:25" (2/3) ... [2023-04-01 20:33:27,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b88810d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:33:27, skipping insertion in model container [2023-04-01 20:33:27,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:33:27" (3/3) ... [2023-04-01 20:33:27,817 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label55.c [2023-04-01 20:33:27,832 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 20:33:27,832 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 20:33:27,895 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 20:33:27,902 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;@28643449, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 20:33:27,903 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 20:33:27,910 INFO L276 IsEmpty]: Start isEmpty. Operand has 311 states, 303 states have (on average 1.7227722772277227) internal successors, (522), 304 states have internal predecessors, (522), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 20:33:27,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-04-01 20:33:27,928 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:33:27,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:33:27,929 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:33:27,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:33:27,936 INFO L85 PathProgramCache]: Analyzing trace with hash 853026778, now seen corresponding path program 1 times [2023-04-01 20:33:27,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:33:27,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057554756] [2023-04-01 20:33:27,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:33:27,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:33:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:29,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:33:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:29,145 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 20:33:29,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:33:29,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057554756] [2023-04-01 20:33:29,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057554756] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:33:29,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:33:29,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 20:33:29,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268254151] [2023-04-01 20:33:29,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:33:29,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 20:33:29,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:33:29,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 20:33:29,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 20:33:29,190 INFO L87 Difference]: Start difference. First operand has 311 states, 303 states have (on average 1.7227722772277227) internal successors, (522), 304 states have internal predecessors, (522), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 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 20:33:31,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:33:31,280 INFO L93 Difference]: Finished difference Result 889 states and 1547 transitions. [2023-04-01 20:33:31,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 20:33:31,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 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 168 [2023-04-01 20:33:31,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:33:31,302 INFO L225 Difference]: With dead ends: 889 [2023-04-01 20:33:31,302 INFO L226 Difference]: Without dead ends: 485 [2023-04-01 20:33:31,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 20:33:31,313 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 677 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-04-01 20:33:31,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [677 Valid, 51 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-04-01 20:33:31,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2023-04-01 20:33:31,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 475. [2023-04-01 20:33:31,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 465 states have (on average 1.5483870967741935) internal successors, (720), 467 states have internal predecessors, (720), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 20:33:31,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 731 transitions. [2023-04-01 20:33:31,390 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 731 transitions. Word has length 168 [2023-04-01 20:33:31,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:33:31,391 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 731 transitions. [2023-04-01 20:33:31,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 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 20:33:31,391 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 731 transitions. [2023-04-01 20:33:31,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-04-01 20:33:31,396 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:33:31,396 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:33:31,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 20:33:31,396 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:33:31,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:33:31,397 INFO L85 PathProgramCache]: Analyzing trace with hash -223302791, now seen corresponding path program 1 times [2023-04-01 20:33:31,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:33:31,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372025908] [2023-04-01 20:33:31,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:33:31,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:33:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:31,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:33:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:32,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:33:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:32,063 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:33:32,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:33:32,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372025908] [2023-04-01 20:33:32,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372025908] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:33:32,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:33:32,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 20:33:32,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332059351] [2023-04-01 20:33:32,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:33:32,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 20:33:32,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:33:32,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 20:33:32,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:33:32,069 INFO L87 Difference]: Start difference. First operand 475 states and 731 transitions. Second operand has 7 states, 6 states have (on average 29.0) internal successors, (174), 4 states have internal predecessors, (174), 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 20:33:34,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:33:34,074 INFO L93 Difference]: Finished difference Result 1426 states and 2228 transitions. [2023-04-01 20:33:34,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 20:33:34,075 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 29.0) internal successors, (174), 4 states have internal predecessors, (174), 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 180 [2023-04-01 20:33:34,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:33:34,080 INFO L225 Difference]: With dead ends: 1426 [2023-04-01 20:33:34,080 INFO L226 Difference]: Without dead ends: 957 [2023-04-01 20:33:34,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:33:34,083 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 1651 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1651 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-01 20:33:34,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1651 Valid, 125 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 1258 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-01 20:33:34,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2023-04-01 20:33:34,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 936. [2023-04-01 20:33:34,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 915 states have (on average 1.5224043715846995) internal successors, (1393), 924 states have internal predecessors, (1393), 6 states have call successors, (6), 6 states have call predecessors, (6), 14 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) [2023-04-01 20:33:34,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1428 transitions. [2023-04-01 20:33:34,131 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1428 transitions. Word has length 180 [2023-04-01 20:33:34,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:33:34,131 INFO L495 AbstractCegarLoop]: Abstraction has 936 states and 1428 transitions. [2023-04-01 20:33:34,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 29.0) internal successors, (174), 4 states have internal predecessors, (174), 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 20:33:34,132 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1428 transitions. [2023-04-01 20:33:34,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-04-01 20:33:34,135 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:33:34,135 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 20:33:34,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 20:33:34,136 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:33:34,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:33:34,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1582621310, now seen corresponding path program 1 times [2023-04-01 20:33:34,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:33:34,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768937824] [2023-04-01 20:33:34,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:33:34,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:33:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:34,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:33:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:34,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:33:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:34,724 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:33:34,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:33:34,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768937824] [2023-04-01 20:33:34,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768937824] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:33:34,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:33:34,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 20:33:34,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460176908] [2023-04-01 20:33:34,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:33:34,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 20:33:34,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:33:34,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 20:33:34,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:33:34,727 INFO L87 Difference]: Start difference. First operand 936 states and 1428 transitions. Second operand has 7 states, 6 states have (on average 29.166666666666668) internal successors, (175), 4 states have internal predecessors, (175), 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 20:33:36,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:33:36,791 INFO L93 Difference]: Finished difference Result 2810 states and 4405 transitions. [2023-04-01 20:33:36,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 20:33:36,791 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 29.166666666666668) internal successors, (175), 4 states have internal predecessors, (175), 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 181 [2023-04-01 20:33:36,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:33:36,801 INFO L225 Difference]: With dead ends: 2810 [2023-04-01 20:33:36,801 INFO L226 Difference]: Without dead ends: 1880 [2023-04-01 20:33:36,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:33:36,804 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 748 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 1702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-01 20:33:36,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 136 Invalid, 1702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-01 20:33:36,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2023-04-01 20:33:36,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1824. [2023-04-01 20:33:36,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1824 states, 1768 states have (on average 1.3354072398190044) internal successors, (2361), 1804 states have internal predecessors, (2361), 10 states have call successors, (10), 10 states have call predecessors, (10), 45 states have return successors, (112), 9 states have call predecessors, (112), 9 states have call successors, (112) [2023-04-01 20:33:36,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1824 states to 1824 states and 2483 transitions. [2023-04-01 20:33:36,869 INFO L78 Accepts]: Start accepts. Automaton has 1824 states and 2483 transitions. Word has length 181 [2023-04-01 20:33:36,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:33:36,869 INFO L495 AbstractCegarLoop]: Abstraction has 1824 states and 2483 transitions. [2023-04-01 20:33:36,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 29.166666666666668) internal successors, (175), 4 states have internal predecessors, (175), 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 20:33:36,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1824 states and 2483 transitions. [2023-04-01 20:33:36,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-04-01 20:33:36,874 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:33:36,874 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 20:33:36,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 20:33:36,875 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:33:36,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:33:36,875 INFO L85 PathProgramCache]: Analyzing trace with hash -375383631, now seen corresponding path program 1 times [2023-04-01 20:33:36,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:33:36,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233644811] [2023-04-01 20:33:36,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:33:36,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:33:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:37,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:33:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:37,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:33:37,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:37,527 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:33:37,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:33:37,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233644811] [2023-04-01 20:33:37,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233644811] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:33:37,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:33:37,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 20:33:37,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105150933] [2023-04-01 20:33:37,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:33:37,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 20:33:37,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:33:37,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 20:33:37,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:33:37,530 INFO L87 Difference]: Start difference. First operand 1824 states and 2483 transitions. Second operand has 8 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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 20:33:40,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:33:40,540 INFO L93 Difference]: Finished difference Result 7263 states and 10427 transitions. [2023-04-01 20:33:40,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 20:33:40,541 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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 184 [2023-04-01 20:33:40,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:33:40,565 INFO L225 Difference]: With dead ends: 7263 [2023-04-01 20:33:40,565 INFO L226 Difference]: Without dead ends: 5445 [2023-04-01 20:33:40,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-04-01 20:33:40,573 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 1045 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 2433 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 2653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 2433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-01 20:33:40,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1045 Valid, 177 Invalid, 2653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 2433 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-01 20:33:40,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5445 states. [2023-04-01 20:33:40,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5445 to 5365. [2023-04-01 20:33:40,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5365 states, 5180 states have (on average 1.2693050193050193) internal successors, (6575), 5313 states have internal predecessors, (6575), 26 states have call successors, (26), 26 states have call predecessors, (26), 158 states have return successors, (559), 25 states have call predecessors, (559), 25 states have call successors, (559) [2023-04-01 20:33:40,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5365 states to 5365 states and 7160 transitions. [2023-04-01 20:33:40,805 INFO L78 Accepts]: Start accepts. Automaton has 5365 states and 7160 transitions. Word has length 184 [2023-04-01 20:33:40,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:33:40,806 INFO L495 AbstractCegarLoop]: Abstraction has 5365 states and 7160 transitions. [2023-04-01 20:33:40,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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 20:33:40,806 INFO L276 IsEmpty]: Start isEmpty. Operand 5365 states and 7160 transitions. [2023-04-01 20:33:40,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-04-01 20:33:40,817 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:33:40,817 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:33:40,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 20:33:40,817 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:33:40,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:33:40,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1147009042, now seen corresponding path program 1 times [2023-04-01 20:33:40,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:33:40,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036909041] [2023-04-01 20:33:40,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:33:40,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:33:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:41,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:33:41,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:41,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:33:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:41,308 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:33:41,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:33:41,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036909041] [2023-04-01 20:33:41,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036909041] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:33:41,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441357146] [2023-04-01 20:33:41,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:33:41,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:33:41,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:33:41,317 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 20:33:41,328 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 20:33:41,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:41,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:33:41,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:33:41,866 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:33:41,866 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:33:41,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441357146] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:33:41,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:33:41,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 20:33:41,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363715930] [2023-04-01 20:33:41,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:33:41,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:33:41,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:33:41,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:33:41,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 20:33:41,869 INFO L87 Difference]: Start difference. First operand 5365 states and 7160 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 20:33:42,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:33:42,691 INFO L93 Difference]: Finished difference Result 13093 states and 18236 transitions. [2023-04-01 20:33:42,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:33:42,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 189 [2023-04-01 20:33:42,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:33:42,730 INFO L225 Difference]: With dead ends: 13093 [2023-04-01 20:33:42,730 INFO L226 Difference]: Without dead ends: 7734 [2023-04-01 20:33:42,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 20:33:42,744 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 79 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 20:33:42,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 423 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 20:33:42,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7734 states. [2023-04-01 20:33:42,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7734 to 7728. [2023-04-01 20:33:42,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7728 states, 7479 states have (on average 1.2236930070865089) internal successors, (9152), 7654 states have internal predecessors, (9152), 37 states have call successors, (37), 37 states have call predecessors, (37), 211 states have return successors, (930), 36 states have call predecessors, (930), 36 states have call successors, (930) [2023-04-01 20:33:42,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7728 states to 7728 states and 10119 transitions. [2023-04-01 20:33:43,000 INFO L78 Accepts]: Start accepts. Automaton has 7728 states and 10119 transitions. Word has length 189 [2023-04-01 20:33:43,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:33:43,000 INFO L495 AbstractCegarLoop]: Abstraction has 7728 states and 10119 transitions. [2023-04-01 20:33:43,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 20:33:43,001 INFO L276 IsEmpty]: Start isEmpty. Operand 7728 states and 10119 transitions. [2023-04-01 20:33:43,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-04-01 20:33:43,015 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:33:43,015 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:33:43,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 20:33:43,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:33:43,223 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:33:43,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:33:43,223 INFO L85 PathProgramCache]: Analyzing trace with hash -2126004683, now seen corresponding path program 1 times [2023-04-01 20:33:43,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:33:43,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994624779] [2023-04-01 20:33:43,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:33:43,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:33:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:43,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:33:43,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:43,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:33:43,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:43,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-04-01 20:33:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:43,948 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 52 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 20:33:43,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:33:43,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994624779] [2023-04-01 20:33:43,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994624779] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:33:43,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961720846] [2023-04-01 20:33:43,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:33:43,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:33:43,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:33:43,950 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 20:33:43,953 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 20:33:44,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:44,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:33:44,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:33:44,430 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-01 20:33:44,430 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:33:44,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961720846] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:33:44,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:33:44,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-04-01 20:33:44,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024219284] [2023-04-01 20:33:44,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:33:44,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:33:44,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:33:44,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:33:44,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:33:44,433 INFO L87 Difference]: Start difference. First operand 7728 states and 10119 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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 20:33:45,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:33:45,218 INFO L93 Difference]: Finished difference Result 15454 states and 20296 transitions. [2023-04-01 20:33:45,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:33:45,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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 213 [2023-04-01 20:33:45,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:33:45,258 INFO L225 Difference]: With dead ends: 15454 [2023-04-01 20:33:45,258 INFO L226 Difference]: Without dead ends: 7732 [2023-04-01 20:33:45,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:33:45,282 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 109 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 20:33:45,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 365 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 20:33:45,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7732 states. [2023-04-01 20:33:45,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7732 to 7728. [2023-04-01 20:33:45,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7728 states, 7479 states have (on average 1.195614386950127) internal successors, (8942), 7654 states have internal predecessors, (8942), 37 states have call successors, (37), 37 states have call predecessors, (37), 211 states have return successors, (837), 36 states have call predecessors, (837), 36 states have call successors, (837) [2023-04-01 20:33:45,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7728 states to 7728 states and 9816 transitions. [2023-04-01 20:33:45,551 INFO L78 Accepts]: Start accepts. Automaton has 7728 states and 9816 transitions. Word has length 213 [2023-04-01 20:33:45,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:33:45,551 INFO L495 AbstractCegarLoop]: Abstraction has 7728 states and 9816 transitions. [2023-04-01 20:33:45,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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 20:33:45,552 INFO L276 IsEmpty]: Start isEmpty. Operand 7728 states and 9816 transitions. [2023-04-01 20:33:45,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-04-01 20:33:45,569 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:33:45,569 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:33:45,578 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 20:33:45,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-04-01 20:33:45,777 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:33:45,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:33:45,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1389095651, now seen corresponding path program 1 times [2023-04-01 20:33:45,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:33:45,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814923894] [2023-04-01 20:33:45,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:33:45,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:33:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:46,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:33:46,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:46,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:33:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:46,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-04-01 20:33:46,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:46,906 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 44 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 20:33:46,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:33:46,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814923894] [2023-04-01 20:33:46,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814923894] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:33:46,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426740632] [2023-04-01 20:33:46,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:33:46,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:33:46,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:33:46,909 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 20:33:46,912 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 20:33:47,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:47,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 1055 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 20:33:47,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:33:47,292 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-01 20:33:47,294 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:33:47,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426740632] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:33:47,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:33:47,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-04-01 20:33:47,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205147649] [2023-04-01 20:33:47,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:33:47,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 20:33:47,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:33:47,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 20:33:47,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-04-01 20:33:47,297 INFO L87 Difference]: Start difference. First operand 7728 states and 9816 transitions. Second operand has 5 states, 5 states have (on average 39.6) internal successors, (198), 4 states have internal predecessors, (198), 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 20:33:48,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:33:48,620 INFO L93 Difference]: Finished difference Result 22593 states and 29996 transitions. [2023-04-01 20:33:48,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 20:33:48,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 4 states have internal predecessors, (198), 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 218 [2023-04-01 20:33:48,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:33:48,699 INFO L225 Difference]: With dead ends: 22593 [2023-04-01 20:33:48,699 INFO L226 Difference]: Without dead ends: 14871 [2023-04-01 20:33:48,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:33:48,726 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 781 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 20:33:48,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 179 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 20:33:48,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14871 states. [2023-04-01 20:33:49,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14871 to 14707. [2023-04-01 20:33:49,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14707 states, 14231 states have (on average 1.1733539456116928) internal successors, (16698), 14569 states have internal predecessors, (16698), 69 states have call successors, (69), 69 states have call predecessors, (69), 406 states have return successors, (1749), 68 states have call predecessors, (1749), 68 states have call successors, (1749) [2023-04-01 20:33:49,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14707 states to 14707 states and 18516 transitions. [2023-04-01 20:33:49,221 INFO L78 Accepts]: Start accepts. Automaton has 14707 states and 18516 transitions. Word has length 218 [2023-04-01 20:33:49,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:33:49,222 INFO L495 AbstractCegarLoop]: Abstraction has 14707 states and 18516 transitions. [2023-04-01 20:33:49,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 4 states have internal predecessors, (198), 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 20:33:49,222 INFO L276 IsEmpty]: Start isEmpty. Operand 14707 states and 18516 transitions. [2023-04-01 20:33:49,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-04-01 20:33:49,251 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:33:49,251 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:33:49,261 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 20:33:49,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:33:49,459 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:33:49,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:33:49,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1447342013, now seen corresponding path program 1 times [2023-04-01 20:33:49,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:33:49,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010490237] [2023-04-01 20:33:49,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:33:49,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:33:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:50,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:33:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:50,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:33:50,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:50,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-04-01 20:33:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:50,401 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 20:33:50,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:33:50,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010490237] [2023-04-01 20:33:50,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010490237] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:33:50,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365731349] [2023-04-01 20:33:50,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:33:50,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:33:50,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:33:50,403 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 20:33:50,406 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 20:33:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:50,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:33:50,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:33:50,901 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-01 20:33:50,902 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:33:50,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365731349] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:33:50,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:33:50,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-04-01 20:33:50,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987413033] [2023-04-01 20:33:50,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:33:50,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:33:50,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:33:50,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:33:50,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 20:33:50,904 INFO L87 Difference]: Start difference. First operand 14707 states and 18516 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 20:33:51,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:33:51,784 INFO L93 Difference]: Finished difference Result 29411 states and 37038 transitions. [2023-04-01 20:33:51,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:33:51,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 234 [2023-04-01 20:33:51,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:33:51,854 INFO L225 Difference]: With dead ends: 29411 [2023-04-01 20:33:51,855 INFO L226 Difference]: Without dead ends: 14710 [2023-04-01 20:33:51,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 20:33:51,886 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 76 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 20:33:51,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 421 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 20:33:51,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14710 states. [2023-04-01 20:33:52,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14710 to 14689. [2023-04-01 20:33:52,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14689 states, 14222 states have (on average 1.160315004921952) internal successors, (16502), 14551 states have internal predecessors, (16502), 69 states have call successors, (69), 69 states have call predecessors, (69), 397 states have return successors, (1618), 68 states have call predecessors, (1618), 68 states have call successors, (1618) [2023-04-01 20:33:52,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14689 states to 14689 states and 18189 transitions. [2023-04-01 20:33:52,288 INFO L78 Accepts]: Start accepts. Automaton has 14689 states and 18189 transitions. Word has length 234 [2023-04-01 20:33:52,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:33:52,289 INFO L495 AbstractCegarLoop]: Abstraction has 14689 states and 18189 transitions. [2023-04-01 20:33:52,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 20:33:52,289 INFO L276 IsEmpty]: Start isEmpty. Operand 14689 states and 18189 transitions. [2023-04-01 20:33:52,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-04-01 20:33:52,316 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:33:52,316 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:33:52,326 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 20:33:52,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:33:52,525 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:33:52,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:33:52,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1038229860, now seen corresponding path program 1 times [2023-04-01 20:33:52,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:33:52,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047066886] [2023-04-01 20:33:52,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:33:52,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:33:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:53,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:33:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:53,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:33:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:53,569 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:33:53,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:33:53,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047066886] [2023-04-01 20:33:53,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047066886] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:33:53,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:33:53,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 20:33:53,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925477799] [2023-04-01 20:33:53,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:33:53,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 20:33:53,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:33:53,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 20:33:53,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:33:53,572 INFO L87 Difference]: Start difference. First operand 14689 states and 18189 transitions. Second operand has 7 states, 6 states have (on average 38.166666666666664) internal successors, (229), 4 states have internal predecessors, (229), 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 20:33:55,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:33:55,697 INFO L93 Difference]: Finished difference Result 37321 states and 47444 transitions. [2023-04-01 20:33:55,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 20:33:55,698 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 38.166666666666664) internal successors, (229), 4 states have internal predecessors, (229), 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 235 [2023-04-01 20:33:55,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:33:55,766 INFO L225 Difference]: With dead ends: 37321 [2023-04-01 20:33:55,767 INFO L226 Difference]: Without dead ends: 22638 [2023-04-01 20:33:55,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:33:55,802 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 1132 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 1864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-01 20:33:55,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1132 Valid, 178 Invalid, 1864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1715 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-01 20:33:55,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22638 states. [2023-04-01 20:33:56,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22638 to 22408. [2023-04-01 20:33:56,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22408 states, 21750 states have (on average 1.135448275862069) internal successors, (24696), 22198 states have internal predecessors, (24696), 105 states have call successors, (105), 105 states have call predecessors, (105), 552 states have return successors, (2240), 104 states have call predecessors, (2240), 104 states have call successors, (2240) [2023-04-01 20:33:56,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22408 states to 22408 states and 27041 transitions. [2023-04-01 20:33:56,414 INFO L78 Accepts]: Start accepts. Automaton has 22408 states and 27041 transitions. Word has length 235 [2023-04-01 20:33:56,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:33:56,414 INFO L495 AbstractCegarLoop]: Abstraction has 22408 states and 27041 transitions. [2023-04-01 20:33:56,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 38.166666666666664) internal successors, (229), 4 states have internal predecessors, (229), 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 20:33:56,414 INFO L276 IsEmpty]: Start isEmpty. Operand 22408 states and 27041 transitions. [2023-04-01 20:33:56,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-04-01 20:33:56,454 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:33:56,454 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:33:56,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-01 20:33:56,454 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:33:56,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:33:56,455 INFO L85 PathProgramCache]: Analyzing trace with hash 627490588, now seen corresponding path program 1 times [2023-04-01 20:33:56,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:33:56,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483783980] [2023-04-01 20:33:56,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:33:56,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:33:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:57,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:33:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:57,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:33:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:57,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-01 20:33:57,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:57,515 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 77 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 20:33:57,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:33:57,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483783980] [2023-04-01 20:33:57,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483783980] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:33:57,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815056003] [2023-04-01 20:33:57,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:33:57,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:33:57,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:33:57,517 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 20:33:57,519 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 20:33:57,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:33:57,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 20:33:57,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:33:57,910 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-01 20:33:57,911 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:33:57,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815056003] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:33:57,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:33:57,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-04-01 20:33:57,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49960280] [2023-04-01 20:33:57,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:33:57,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:33:57,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:33:57,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:33:57,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-01 20:33:57,912 INFO L87 Difference]: Start difference. First operand 22408 states and 27041 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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 20:33:58,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:33:58,729 INFO L93 Difference]: Finished difference Result 37798 states and 45794 transitions. [2023-04-01 20:33:58,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:33:58,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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 246 [2023-04-01 20:33:58,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:33:58,837 INFO L225 Difference]: With dead ends: 37798 [2023-04-01 20:33:58,837 INFO L226 Difference]: Without dead ends: 15396 [2023-04-01 20:33:58,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-01 20:33:58,867 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 116 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 20:33:58,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 392 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 20:33:58,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15396 states. [2023-04-01 20:33:59,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15396 to 15388. [2023-04-01 20:33:59,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15388 states, 14881 states have (on average 1.1143068342181306) internal successors, (16582), 15244 states have internal predecessors, (16582), 72 states have call successors, (72), 72 states have call predecessors, (72), 434 states have return successors, (1337), 71 states have call predecessors, (1337), 71 states have call successors, (1337) [2023-04-01 20:33:59,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15388 states to 15388 states and 17991 transitions. [2023-04-01 20:33:59,277 INFO L78 Accepts]: Start accepts. Automaton has 15388 states and 17991 transitions. Word has length 246 [2023-04-01 20:33:59,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:33:59,277 INFO L495 AbstractCegarLoop]: Abstraction has 15388 states and 17991 transitions. [2023-04-01 20:33:59,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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 20:33:59,278 INFO L276 IsEmpty]: Start isEmpty. Operand 15388 states and 17991 transitions. [2023-04-01 20:33:59,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2023-04-01 20:33:59,315 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:33:59,315 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:33:59,324 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 20:33:59,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-04-01 20:33:59,523 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:33:59,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:33:59,524 INFO L85 PathProgramCache]: Analyzing trace with hash -622899174, now seen corresponding path program 1 times [2023-04-01 20:33:59,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:33:59,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157929358] [2023-04-01 20:33:59,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:33:59,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:33:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:34:00,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:34:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:34:00,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:34:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:34:00,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-04-01 20:34:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:34:00,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-01 20:34:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:34:00,521 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 20:34:00,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:34:00,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157929358] [2023-04-01 20:34:00,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157929358] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:34:00,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659499290] [2023-04-01 20:34:00,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:34:00,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:34:00,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:34:00,524 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 20:34:00,528 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 20:34:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:34:00,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 23 conjunts are in the unsatisfiable core [2023-04-01 20:34:00,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:34:01,011 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 104 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-01 20:34:01,011 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:34:01,449 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 84 proven. 24 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-01 20:34:01,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659499290] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:34:01,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:34:01,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-04-01 20:34:01,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380737852] [2023-04-01 20:34:01,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:34:01,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-01 20:34:01,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:34:01,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-01 20:34:01,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-04-01 20:34:01,452 INFO L87 Difference]: Start difference. First operand 15388 states and 17991 transitions. Second operand has 18 states, 18 states have (on average 19.055555555555557) internal successors, (343), 16 states have internal predecessors, (343), 6 states have call successors, (12), 10 states have call predecessors, (12), 11 states have return successors, (11), 5 states have call predecessors, (11), 6 states have call successors, (11) [2023-04-01 20:34:10,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:34:10,284 INFO L93 Difference]: Finished difference Result 51221 states and 66675 transitions. [2023-04-01 20:34:10,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-04-01 20:34:10,284 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 19.055555555555557) internal successors, (343), 16 states have internal predecessors, (343), 6 states have call successors, (12), 10 states have call predecessors, (12), 11 states have return successors, (11), 5 states have call predecessors, (11), 6 states have call successors, (11) Word has length 250 [2023-04-01 20:34:10,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:34:10,435 INFO L225 Difference]: With dead ends: 51221 [2023-04-01 20:34:10,435 INFO L226 Difference]: Without dead ends: 35839 [2023-04-01 20:34:10,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 569 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3994 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1805, Invalid=8907, Unknown=0, NotChecked=0, Total=10712 [2023-04-01 20:34:10,477 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 6338 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 6770 mSolverCounterSat, 1110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6338 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 7880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1110 IncrementalHoareTripleChecker+Valid, 6770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-04-01 20:34:10,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6338 Valid, 362 Invalid, 7880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1110 Valid, 6770 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-04-01 20:34:10,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35839 states. [2023-04-01 20:34:11,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35839 to 34640. [2023-04-01 20:34:11,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34640 states, 33725 states have (on average 1.0832616753150481) internal successors, (36533), 34310 states have internal predecessors, (36533), 167 states have call successors, (167), 163 states have call predecessors, (167), 747 states have return successors, (2494), 166 states have call predecessors, (2494), 166 states have call successors, (2494) [2023-04-01 20:34:11,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34640 states to 34640 states and 39194 transitions. [2023-04-01 20:34:11,450 INFO L78 Accepts]: Start accepts. Automaton has 34640 states and 39194 transitions. Word has length 250 [2023-04-01 20:34:11,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:34:11,451 INFO L495 AbstractCegarLoop]: Abstraction has 34640 states and 39194 transitions. [2023-04-01 20:34:11,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 19.055555555555557) internal successors, (343), 16 states have internal predecessors, (343), 6 states have call successors, (12), 10 states have call predecessors, (12), 11 states have return successors, (11), 5 states have call predecessors, (11), 6 states have call successors, (11) [2023-04-01 20:34:11,451 INFO L276 IsEmpty]: Start isEmpty. Operand 34640 states and 39194 transitions. [2023-04-01 20:34:11,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2023-04-01 20:34:11,490 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:34:11,491 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:34:11,499 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-04-01 20:34:11,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:34:11,700 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:34:11,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:34:11,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1685553246, now seen corresponding path program 1 times [2023-04-01 20:34:11,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:34:11,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343825958] [2023-04-01 20:34:11,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:34:11,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:34:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:34:12,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:34:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:34:12,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:34:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:34:12,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-01 20:34:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:34:12,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-04-01 20:34:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:34:12,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-04-01 20:34:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:34:12,604 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 199 proven. 32 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-04-01 20:34:12,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:34:12,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343825958] [2023-04-01 20:34:12,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343825958] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:34:12,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473293527] [2023-04-01 20:34:12,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:34:12,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:34:12,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:34:12,606 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 20:34:12,608 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 20:34:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:34:12,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:34:12,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:34:13,038 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 232 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-04-01 20:34:13,039 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:34:13,152 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 200 proven. 34 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-04-01 20:34:13,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473293527] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:34:13,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:34:13,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 20:34:13,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149875478] [2023-04-01 20:34:13,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:34:13,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 20:34:13,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:34:13,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 20:34:13,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:34:13,156 INFO L87 Difference]: Start difference. First operand 34640 states and 39194 transitions. Second operand has 12 states, 12 states have (on average 26.416666666666668) internal successors, (317), 10 states have internal predecessors, (317), 4 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 20:34:18,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:34:18,671 INFO L93 Difference]: Finished difference Result 99182 states and 119523 transitions. [2023-04-01 20:34:18,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-04-01 20:34:18,671 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 26.416666666666668) internal successors, (317), 10 states have internal predecessors, (317), 4 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 356 [2023-04-01 20:34:18,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:34:18,930 INFO L225 Difference]: With dead ends: 99182 [2023-04-01 20:34:18,930 INFO L226 Difference]: Without dead ends: 64564 [2023-04-01 20:34:18,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 740 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=286, Invalid=1120, Unknown=0, NotChecked=0, Total=1406 [2023-04-01 20:34:18,990 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 2790 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 4515 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2796 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 5021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 4515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-04-01 20:34:18,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2796 Valid, 248 Invalid, 5021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [506 Valid, 4515 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-04-01 20:34:19,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64564 states. [2023-04-01 20:34:20,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64564 to 62556. [2023-04-01 20:34:20,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62556 states, 60909 states have (on average 1.0657374115483755) internal successors, (64913), 61962 states have internal predecessors, (64913), 301 states have call successors, (301), 293 states have call predecessors, (301), 1345 states have return successors, (3757), 300 states have call predecessors, (3757), 300 states have call successors, (3757) [2023-04-01 20:34:20,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62556 states to 62556 states and 68971 transitions. [2023-04-01 20:34:20,816 INFO L78 Accepts]: Start accepts. Automaton has 62556 states and 68971 transitions. Word has length 356 [2023-04-01 20:34:20,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:34:20,817 INFO L495 AbstractCegarLoop]: Abstraction has 62556 states and 68971 transitions. [2023-04-01 20:34:20,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.416666666666668) internal successors, (317), 10 states have internal predecessors, (317), 4 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 20:34:20,817 INFO L276 IsEmpty]: Start isEmpty. Operand 62556 states and 68971 transitions. [2023-04-01 20:34:20,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2023-04-01 20:34:20,906 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:34:20,907 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-04-01 20:34:20,918 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 20:34:21,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:34:21,119 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:34:21,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:34:21,119 INFO L85 PathProgramCache]: Analyzing trace with hash 89478861, now seen corresponding path program 1 times [2023-04-01 20:34:21,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:34:21,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111517500] [2023-04-01 20:34:21,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:34:21,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:34:21,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:34:22,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:34:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:34:22,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:34:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:34:22,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-01 20:34:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:34:22,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-04-01 20:34:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:34:22,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2023-04-01 20:34:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:34:23,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2023-04-01 20:34:23,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:34:23,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2023-04-01 20:34:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:34:23,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2023-04-01 20:34:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:34:23,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1268 backedges. 502 proven. 422 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2023-04-01 20:34:23,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:34:23,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111517500] [2023-04-01 20:34:23,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111517500] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:34:23,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175982314] [2023-04-01 20:34:23,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:34:23,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:34:23,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:34:23,086 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 20:34:23,088 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 20:34:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:34:23,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 2287 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 20:34:23,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:34:23,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1268 backedges. 752 proven. 6 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2023-04-01 20:34:23,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:34:23,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1268 backedges. 692 proven. 30 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2023-04-01 20:34:23,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175982314] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:34:23,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:34:23,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 14 [2023-04-01 20:34:23,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203258738] [2023-04-01 20:34:23,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:34:23,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 20:34:23,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:34:23,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 20:34:23,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-04-01 20:34:23,872 INFO L87 Difference]: Start difference. First operand 62556 states and 68971 transitions. Second operand has 14 states, 14 states have (on average 37.642857142857146) internal successors, (527), 12 states have internal predecessors, (527), 5 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 20:34:54,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:34:54,710 INFO L93 Difference]: Finished difference Result 427094 states and 560105 transitions. [2023-04-01 20:34:54,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2023-04-01 20:34:54,711 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 37.642857142857146) internal successors, (527), 12 states have internal predecessors, (527), 5 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 672 [2023-04-01 20:34:54,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:34:57,250 INFO L225 Difference]: With dead ends: 427094 [2023-04-01 20:34:57,251 INFO L226 Difference]: Without dead ends: 361892 [2023-04-01 20:34:57,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1608 GetRequests, 1431 SyntacticMatches, 4 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12710 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=3163, Invalid=27287, Unknown=0, NotChecked=0, Total=30450 [2023-04-01 20:34:57,662 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 3617 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 16917 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3632 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 17470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 16917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2023-04-01 20:34:57,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3632 Valid, 1121 Invalid, 17470 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [553 Valid, 16917 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2023-04-01 20:34:57,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361892 states. [2023-04-01 20:35:08,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361892 to 334454. [2023-04-01 20:35:09,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334454 states, 325568 states have (on average 1.0607031403577747) internal successors, (345331), 330225 states have internal predecessors, (345331), 2682 states have call successors, (2682), 1547 states have call predecessors, (2682), 6203 states have return successors, (33815), 2681 states have call predecessors, (33815), 2681 states have call successors, (33815) [2023-04-01 20:35:10,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334454 states to 334454 states and 381828 transitions. [2023-04-01 20:35:10,691 INFO L78 Accepts]: Start accepts. Automaton has 334454 states and 381828 transitions. Word has length 672 [2023-04-01 20:35:10,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:35:10,691 INFO L495 AbstractCegarLoop]: Abstraction has 334454 states and 381828 transitions. [2023-04-01 20:35:10,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 37.642857142857146) internal successors, (527), 12 states have internal predecessors, (527), 5 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 20:35:10,692 INFO L276 IsEmpty]: Start isEmpty. Operand 334454 states and 381828 transitions. [2023-04-01 20:35:11,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2023-04-01 20:35:11,548 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:35:11,548 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:35:11,557 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 20:35:11,757 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,SelfDestructingSolverStorable12 [2023-04-01 20:35:11,757 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:35:11,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:35:11,758 INFO L85 PathProgramCache]: Analyzing trace with hash 35229338, now seen corresponding path program 1 times [2023-04-01 20:35:11,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:35:11,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112611882] [2023-04-01 20:35:11,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:35:11,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:35:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:13,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:35:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:13,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:35:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:13,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-01 20:35:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:13,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-01 20:35:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:13,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-04-01 20:35:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:13,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2023-04-01 20:35:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:13,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2023-04-01 20:35:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:13,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2023-04-01 20:35:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:13,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 525 proven. 460 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2023-04-01 20:35:13,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:35:13,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112611882] [2023-04-01 20:35:13,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112611882] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:35:13,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458958671] [2023-04-01 20:35:13,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:35:13,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:35:13,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:35:13,813 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 20:35:13,816 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 20:35:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:14,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 2291 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 20:35:14,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:35:14,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 972 proven. 2 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-04-01 20:35:14,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:35:14,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 701 proven. 195 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2023-04-01 20:35:14,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458958671] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:35:14,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:35:14,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 18 [2023-04-01 20:35:14,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273127367] [2023-04-01 20:35:14,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:35:14,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-01 20:35:14,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:35:14,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-01 20:35:14,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2023-04-01 20:35:14,894 INFO L87 Difference]: Start difference. First operand 334454 states and 381828 transitions. Second operand has 18 states, 18 states have (on average 42.611111111111114) internal successors, (767), 16 states have internal predecessors, (767), 6 states have call successors, (13), 7 states have call predecessors, (13), 9 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2023-04-01 20:36:20,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:36:20,437 INFO L93 Difference]: Finished difference Result 960858 states and 1153417 transitions. [2023-04-01 20:36:20,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 378 states. [2023-04-01 20:36:20,438 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 42.611111111111114) internal successors, (767), 16 states have internal predecessors, (767), 6 states have call successors, (13), 7 states have call predecessors, (13), 9 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) Word has length 682 [2023-04-01 20:36:20,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:36:20,438 INFO L225 Difference]: With dead ends: 960858 [2023-04-01 20:36:20,438 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 20:36:21,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2001 GetRequests, 1619 SyntacticMatches, 0 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67448 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=10565, Invalid=136507, Unknown=0, NotChecked=0, Total=147072 [2023-04-01 20:36:21,796 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 8940 mSDsluCounter, 1681 mSDsCounter, 0 mSdLazyCounter, 36592 mSolverCounterSat, 1956 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8967 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 38548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1956 IncrementalHoareTripleChecker+Valid, 36592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time [2023-04-01 20:36:21,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8967 Valid, 1917 Invalid, 38548 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1956 Valid, 36592 Invalid, 0 Unknown, 0 Unchecked, 23.0s Time] [2023-04-01 20:36:21,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 20:36:21,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 20:36:21,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-01 20:36:21,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 20:36:21,806 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 682 [2023-04-01 20:36:21,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:36:21,806 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 20:36:21,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 42.611111111111114) internal successors, (767), 16 states have internal predecessors, (767), 6 states have call successors, (13), 7 states have call predecessors, (13), 9 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2023-04-01 20:36:21,807 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 20:36:21,807 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 20:36:21,809 INFO L805 garLoopResultBuilder]: Registering result SAFE for location calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 20:36:21,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-01 20:36:22,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-04-01 20:36:22,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.