/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/eca-rers2012/Problem13_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 22:45:17,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 22:45:17,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 22:45:17,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 22:45:17,953 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 22:45:17,983 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 22:45:17,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 22:45:17,984 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 22:45:17,984 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 22:45:17,985 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 22:45:17,986 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 22:45:17,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 22:45:17,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 22:45:17,986 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 22:45:17,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 22:45:17,987 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 22:45:17,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 22:45:17,988 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 22:45:17,988 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 22:45:17,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 22:45:17,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 22:45:17,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 22:45:17,988 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 22:45:17,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 22:45:17,989 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 22:45:17,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 22:45:17,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 22:45:17,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 22:45:17,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 22:45:17,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:45:17,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 22:45:17,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 22:45:17,990 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 22:45:17,990 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 22:45:17,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 22:45:17,990 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 22:45:17,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 22:45:17,991 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 22:45:17,991 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 22:45:17,991 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 22:45:17,991 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 22:45:18,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 22:45:18,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 22:45:18,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 22:45:18,248 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 22:45:18,248 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 22:45:18,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label42.c [2023-04-01 22:45:19,449 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 22:45:19,905 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 22:45:19,906 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label42.c [2023-04-01 22:45:19,935 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/925771823/66ab16c2ae1344528b6122443baba311/FLAGee6abb6f7 [2023-04-01 22:45:19,951 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/925771823/66ab16c2ae1344528b6122443baba311 [2023-04-01 22:45:19,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 22:45:19,954 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 22:45:19,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 22:45:19,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 22:45:19,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 22:45:19,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:45:19" (1/1) ... [2023-04-01 22:45:19,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c5b22a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:45:19, skipping insertion in model container [2023-04-01 22:45:19,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:45:19" (1/1) ... [2023-04-01 22:45:19,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 22:45:20,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 22:45:20,385 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label42.c[9228,9241] [2023-04-01 22:45:21,063 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:45:21,071 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 22:45:21,092 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label42.c[9228,9241] [2023-04-01 22:45:21,581 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:45:21,605 INFO L208 MainTranslator]: Completed translation [2023-04-01 22:45:21,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:45:21 WrapperNode [2023-04-01 22:45:21,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 22:45:21,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 22:45:21,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 22:45:21,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 22:45:21,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:45:21" (1/1) ... [2023-04-01 22:45:21,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:45:21" (1/1) ... [2023-04-01 22:45:21,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:45:21" (1/1) ... [2023-04-01 22:45:21,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:45:21" (1/1) ... [2023-04-01 22:45:21,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:45:21" (1/1) ... [2023-04-01 22:45:21,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:45:21" (1/1) ... [2023-04-01 22:45:21,946 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:45:21" (1/1) ... [2023-04-01 22:45:21,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:45:21" (1/1) ... [2023-04-01 22:45:21,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 22:45:21,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 22:45:21,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 22:45:21,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 22:45:21,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:45:21" (1/1) ... [2023-04-01 22:45:22,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:45:22,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:45:22,026 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 22:45:22,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 22:45:22,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 22:45:22,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 22:45:22,100 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 22:45:22,100 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 22:45:22,100 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 22:45:22,100 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 22:45:22,100 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 22:45:22,101 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 22:45:22,101 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 22:45:22,101 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 22:45:22,101 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 22:45:22,101 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 22:45:22,101 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 22:45:22,101 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 22:45:22,101 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 22:45:22,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 22:45:22,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 22:45:22,102 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 22:45:22,102 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 22:45:22,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 22:45:22,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 22:45:22,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 22:45:22,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 22:45:22,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 22:45:22,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 22:45:22,166 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 22:45:22,168 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 22:45:26,787 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 22:45:26,807 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 22:45:26,807 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 22:45:26,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:45:26 BoogieIcfgContainer [2023-04-01 22:45:26,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 22:45:26,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 22:45:26,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 22:45:26,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 22:45:26,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:45:19" (1/3) ... [2023-04-01 22:45:26,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@398e16bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:45:26, skipping insertion in model container [2023-04-01 22:45:26,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:45:21" (2/3) ... [2023-04-01 22:45:26,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@398e16bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:45:26, skipping insertion in model container [2023-04-01 22:45:26,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:45:26" (3/3) ... [2023-04-01 22:45:26,818 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label42.c [2023-04-01 22:45:26,833 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 22:45:26,833 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 22:45:26,942 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 22:45:26,950 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;@245a4b08, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 22:45:26,951 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 22:45:26,960 INFO L276 IsEmpty]: Start isEmpty. Operand has 1119 states, 1105 states have (on average 1.820814479638009) internal successors, (2012), 1106 states have internal predecessors, (2012), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 22:45:26,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-01 22:45:26,973 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:45:26,974 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] [2023-04-01 22:45:26,974 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:45:26,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:45:26,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1790645340, now seen corresponding path program 1 times [2023-04-01 22:45:26,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:45:26,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83254992] [2023-04-01 22:45:26,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:26,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:45:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:27,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:45:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:27,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:45:27,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:45:27,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83254992] [2023-04-01 22:45:27,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83254992] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:45:27,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:45:27,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 22:45:27,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815663799] [2023-04-01 22:45:27,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:45:27,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 22:45:27,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:45:27,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 22:45:27,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 22:45:27,658 INFO L87 Difference]: Start difference. First operand has 1119 states, 1105 states have (on average 1.820814479638009) internal successors, (2012), 1106 states have internal predecessors, (2012), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 3 states have (on average 22.333333333333332) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 22:45:33,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:45:33,858 INFO L93 Difference]: Finished difference Result 3230 states and 5909 transitions. [2023-04-01 22:45:33,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 22:45:33,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 22.333333333333332) internal successors, (67), 2 states have internal predecessors, (67), 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 71 [2023-04-01 22:45:33,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:45:33,883 INFO L225 Difference]: With dead ends: 3230 [2023-04-01 22:45:33,883 INFO L226 Difference]: Without dead ends: 2026 [2023-04-01 22:45:33,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:45:33,895 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 2994 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 4486 mSolverCounterSat, 603 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2994 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 5089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 603 IncrementalHoareTripleChecker+Valid, 4486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:45:33,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2994 Valid, 300 Invalid, 5089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [603 Valid, 4486 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-04-01 22:45:33,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2023-04-01 22:45:34,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 2009. [2023-04-01 22:45:34,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 1981 states have (on average 1.6436143361938416) internal successors, (3256), 1983 states have internal predecessors, (3256), 10 states have call successors, (10), 10 states have call predecessors, (10), 17 states have return successors, (25), 15 states have call predecessors, (25), 9 states have call successors, (25) [2023-04-01 22:45:34,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 3291 transitions. [2023-04-01 22:45:34,027 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 3291 transitions. Word has length 71 [2023-04-01 22:45:34,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:45:34,028 INFO L495 AbstractCegarLoop]: Abstraction has 2009 states and 3291 transitions. [2023-04-01 22:45:34,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 22.333333333333332) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 22:45:34,029 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 3291 transitions. [2023-04-01 22:45:34,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-04-01 22:45:34,033 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:45:34,034 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] [2023-04-01 22:45:34,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 22:45:34,034 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:45:34,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:45:34,035 INFO L85 PathProgramCache]: Analyzing trace with hash -853209199, now seen corresponding path program 1 times [2023-04-01 22:45:34,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:45:34,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388674809] [2023-04-01 22:45:34,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:34,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:45:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:34,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:45:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:34,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:45:34,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:34,559 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 22:45:34,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:45:34,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388674809] [2023-04-01 22:45:34,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388674809] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:45:34,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:45:34,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 22:45:34,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386253922] [2023-04-01 22:45:34,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:45:34,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 22:45:34,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:45:34,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 22:45:34,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:45:34,564 INFO L87 Difference]: Start difference. First operand 2009 states and 3291 transitions. Second operand has 7 states, 6 states have (on average 23.333333333333332) internal successors, (140), 4 states have internal predecessors, (140), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:45:42,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:45:42,306 INFO L93 Difference]: Finished difference Result 5863 states and 9700 transitions. [2023-04-01 22:45:42,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 22:45:42,307 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 23.333333333333332) internal successors, (140), 4 states have internal predecessors, (140), 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 146 [2023-04-01 22:45:42,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:45:42,326 INFO L225 Difference]: With dead ends: 5863 [2023-04-01 22:45:42,326 INFO L226 Difference]: Without dead ends: 3860 [2023-04-01 22:45:42,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:45:42,333 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 3296 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 7739 mSolverCounterSat, 1185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3296 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 8924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1185 IncrementalHoareTripleChecker+Valid, 7739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:45:42,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3296 Valid, 815 Invalid, 8924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1185 Valid, 7739 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-04-01 22:45:42,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3860 states. [2023-04-01 22:45:42,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3860 to 3760. [2023-04-01 22:45:42,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3760 states, 3688 states have (on average 1.4899674620390455) internal successors, (5495), 3700 states have internal predecessors, (5495), 18 states have call successors, (18), 18 states have call predecessors, (18), 53 states have return successors, (117), 41 states have call predecessors, (117), 17 states have call successors, (117) [2023-04-01 22:45:42,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3760 states to 3760 states and 5630 transitions. [2023-04-01 22:45:42,502 INFO L78 Accepts]: Start accepts. Automaton has 3760 states and 5630 transitions. Word has length 146 [2023-04-01 22:45:42,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:45:42,504 INFO L495 AbstractCegarLoop]: Abstraction has 3760 states and 5630 transitions. [2023-04-01 22:45:42,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 23.333333333333332) internal successors, (140), 4 states have internal predecessors, (140), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:45:42,505 INFO L276 IsEmpty]: Start isEmpty. Operand 3760 states and 5630 transitions. [2023-04-01 22:45:42,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-04-01 22:45:42,512 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:45:42,512 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] [2023-04-01 22:45:42,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 22:45:42,513 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:45:42,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:45:42,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1254158317, now seen corresponding path program 1 times [2023-04-01 22:45:42,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:45:42,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838470208] [2023-04-01 22:45:42,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:42,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:45:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:42,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:45:42,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:42,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:45:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:42,885 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 22:45:42,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:45:42,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838470208] [2023-04-01 22:45:42,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838470208] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:45:42,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:45:42,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:45:42,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573113356] [2023-04-01 22:45:42,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:45:42,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:45:42,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:45:42,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:45:42,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:45:42,891 INFO L87 Difference]: Start difference. First operand 3760 states and 5630 transitions. Second operand has 8 states, 7 states have (on average 22.0) internal successors, (154), 5 states have internal predecessors, (154), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:45:51,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:45:51,503 INFO L93 Difference]: Finished difference Result 14591 states and 22901 transitions. [2023-04-01 22:45:51,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:45:51,504 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 22.0) internal successors, (154), 5 states have internal predecessors, (154), 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 160 [2023-04-01 22:45:51,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:45:51,558 INFO L225 Difference]: With dead ends: 14591 [2023-04-01 22:45:51,558 INFO L226 Difference]: Without dead ends: 10837 [2023-04-01 22:45:51,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:45:51,575 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 4931 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 8284 mSolverCounterSat, 1969 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4931 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 10253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1969 IncrementalHoareTripleChecker+Valid, 8284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:45:51,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4931 Valid, 813 Invalid, 10253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1969 Valid, 8284 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2023-04-01 22:45:51,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10837 states. [2023-04-01 22:45:51,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10837 to 10751. [2023-04-01 22:45:51,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10751 states, 10420 states have (on average 1.3435700575815739) internal successors, (14000), 10488 states have internal predecessors, (14000), 50 states have call successors, (50), 50 states have call predecessors, (50), 280 states have return successors, (1257), 212 states have call predecessors, (1257), 49 states have call successors, (1257) [2023-04-01 22:45:51,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10751 states to 10751 states and 15307 transitions. [2023-04-01 22:45:51,884 INFO L78 Accepts]: Start accepts. Automaton has 10751 states and 15307 transitions. Word has length 160 [2023-04-01 22:45:51,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:45:51,885 INFO L495 AbstractCegarLoop]: Abstraction has 10751 states and 15307 transitions. [2023-04-01 22:45:51,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 22.0) internal successors, (154), 5 states have internal predecessors, (154), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:45:51,885 INFO L276 IsEmpty]: Start isEmpty. Operand 10751 states and 15307 transitions. [2023-04-01 22:45:51,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-04-01 22:45:51,888 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:45:51,888 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] [2023-04-01 22:45:51,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 22:45:51,888 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:45:51,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:45:51,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1114702480, now seen corresponding path program 1 times [2023-04-01 22:45:51,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:45:51,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126203216] [2023-04-01 22:45:51,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:51,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:45:51,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:52,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:45:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:52,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:45:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:52,271 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 22:45:52,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:45:52,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126203216] [2023-04-01 22:45:52,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126203216] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:45:52,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:45:52,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:45:52,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725977974] [2023-04-01 22:45:52,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:45:52,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:45:52,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:45:52,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:45:52,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:45:52,274 INFO L87 Difference]: Start difference. First operand 10751 states and 15307 transitions. Second operand has 8 states, 7 states have (on average 26.142857142857142) internal successors, (183), 5 states have internal predecessors, (183), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:46:00,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:46:00,187 INFO L93 Difference]: Finished difference Result 39561 states and 60683 transitions. [2023-04-01 22:46:00,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:46:00,188 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 26.142857142857142) internal successors, (183), 5 states have internal predecessors, (183), 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 189 [2023-04-01 22:46:00,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:46:00,313 INFO L225 Difference]: With dead ends: 39561 [2023-04-01 22:46:00,313 INFO L226 Difference]: Without dead ends: 28816 [2023-04-01 22:46:00,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:46:00,359 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 5236 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 7481 mSolverCounterSat, 2178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5236 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 9659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2178 IncrementalHoareTripleChecker+Valid, 7481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:46:00,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5236 Valid, 569 Invalid, 9659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2178 Valid, 7481 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-04-01 22:46:00,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28816 states. [2023-04-01 22:46:00,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28816 to 28710. [2023-04-01 22:46:01,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28710 states, 27783 states have (on average 1.2118561710398446) internal successors, (33669), 28013 states have internal predecessors, (33669), 134 states have call successors, (134), 134 states have call predecessors, (134), 792 states have return successors, (5011), 562 states have call predecessors, (5011), 133 states have call successors, (5011) [2023-04-01 22:46:01,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28710 states to 28710 states and 38814 transitions. [2023-04-01 22:46:01,084 INFO L78 Accepts]: Start accepts. Automaton has 28710 states and 38814 transitions. Word has length 189 [2023-04-01 22:46:01,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:46:01,085 INFO L495 AbstractCegarLoop]: Abstraction has 28710 states and 38814 transitions. [2023-04-01 22:46:01,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 26.142857142857142) internal successors, (183), 5 states have internal predecessors, (183), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:46:01,086 INFO L276 IsEmpty]: Start isEmpty. Operand 28710 states and 38814 transitions. [2023-04-01 22:46:01,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-04-01 22:46:01,090 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:46:01,090 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] [2023-04-01 22:46:01,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 22:46:01,090 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:46:01,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:46:01,091 INFO L85 PathProgramCache]: Analyzing trace with hash 2004712324, now seen corresponding path program 1 times [2023-04-01 22:46:01,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:46:01,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290138359] [2023-04-01 22:46:01,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:46:01,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:46:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:01,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:46:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:01,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:46:02,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:02,315 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:46:02,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:46:02,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290138359] [2023-04-01 22:46:02,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290138359] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:46:02,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285075981] [2023-04-01 22:46:02,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:46:02,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:46:02,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:46:02,327 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:46:02,328 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 22:46:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:02,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 9 conjunts are in the unsatisfiable core [2023-04-01 22:46:02,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:46:02,857 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 3 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:46:02,857 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:46:03,359 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 22:46:03,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285075981] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-01 22:46:03,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-01 22:46:03,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 16 [2023-04-01 22:46:03,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632428179] [2023-04-01 22:46:03,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:46:03,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 22:46:03,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:46:03,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 22:46:03,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:46:03,361 INFO L87 Difference]: Start difference. First operand 28710 states and 38814 transitions. Second operand has 6 states, 6 states have (on average 32.333333333333336) internal successors, (194), 5 states have internal predecessors, (194), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:46:10,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:46:10,921 INFO L93 Difference]: Finished difference Result 102307 states and 146026 transitions. [2023-04-01 22:46:10,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 22:46:10,926 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 32.333333333333336) internal successors, (194), 5 states have internal predecessors, (194), 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 200 [2023-04-01 22:46:10,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:46:11,204 INFO L225 Difference]: With dead ends: 102307 [2023-04-01 22:46:11,204 INFO L226 Difference]: Without dead ends: 73603 [2023-04-01 22:46:11,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 394 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-04-01 22:46:11,405 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 3524 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 5202 mSolverCounterSat, 2460 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3524 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 7662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2460 IncrementalHoareTripleChecker+Valid, 5202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:46:11,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3524 Valid, 419 Invalid, 7662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2460 Valid, 5202 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-04-01 22:46:11,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73603 states. [2023-04-01 22:46:13,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73603 to 72595. [2023-04-01 22:46:13,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72595 states, 70761 states have (on average 1.222410649934286) internal successors, (86499), 71200 states have internal predecessors, (86499), 346 states have call successors, (346), 346 states have call predecessors, (346), 1487 states have return successors, (18283), 1048 states have call predecessors, (18283), 345 states have call successors, (18283) [2023-04-01 22:46:13,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72595 states to 72595 states and 105128 transitions. [2023-04-01 22:46:13,858 INFO L78 Accepts]: Start accepts. Automaton has 72595 states and 105128 transitions. Word has length 200 [2023-04-01 22:46:13,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:46:13,858 INFO L495 AbstractCegarLoop]: Abstraction has 72595 states and 105128 transitions. [2023-04-01 22:46:13,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.333333333333336) internal successors, (194), 5 states have internal predecessors, (194), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:46:13,859 INFO L276 IsEmpty]: Start isEmpty. Operand 72595 states and 105128 transitions. [2023-04-01 22:46:13,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2023-04-01 22:46:13,865 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:46:13,865 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:46:13,874 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 22:46:14,069 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 22:46:14,070 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:46:14,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:46:14,070 INFO L85 PathProgramCache]: Analyzing trace with hash 249086838, now seen corresponding path program 1 times [2023-04-01 22:46:14,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:46:14,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253889889] [2023-04-01 22:46:14,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:46:14,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:46:14,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:14,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:46:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:14,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:46:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:15,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-01 22:46:15,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:15,134 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 129 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:46:15,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:46:15,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253889889] [2023-04-01 22:46:15,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253889889] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:46:15,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792201410] [2023-04-01 22:46:15,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:46:15,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:46:15,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:46:15,136 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:46:15,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 22:46:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:15,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:46:15,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:46:15,365 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-04-01 22:46:15,365 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:46:15,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792201410] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:46:15,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:46:15,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 12 [2023-04-01 22:46:15,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274151625] [2023-04-01 22:46:15,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:46:15,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:46:15,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:46:15,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:46:15,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:46:15,367 INFO L87 Difference]: Start difference. First operand 72595 states and 105128 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:46:18,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:46:18,853 INFO L93 Difference]: Finished difference Result 145185 states and 210433 transitions. [2023-04-01 22:46:18,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:46:18,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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 280 [2023-04-01 22:46:18,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:46:19,281 INFO L225 Difference]: With dead ends: 145185 [2023-04-01 22:46:19,282 INFO L226 Difference]: Without dead ends: 72596 [2023-04-01 22:46:19,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:46:19,365 INFO L413 NwaCegarLoop]: 1406 mSDtfsCounter, 1161 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 2457 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 2904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 2457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:46:19,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1161 Valid, 1510 Invalid, 2904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [447 Valid, 2457 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-04-01 22:46:19,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72596 states. [2023-04-01 22:46:20,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72596 to 70186. [2023-04-01 22:46:20,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70186 states, 68376 states have (on average 1.1603486603486604) internal successors, (79340), 68815 states have internal predecessors, (79340), 334 states have call successors, (334), 334 states have call predecessors, (334), 1475 states have return successors, (13347), 1036 states have call predecessors, (13347), 333 states have call successors, (13347) [2023-04-01 22:46:20,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70186 states to 70186 states and 93021 transitions. [2023-04-01 22:46:20,969 INFO L78 Accepts]: Start accepts. Automaton has 70186 states and 93021 transitions. Word has length 280 [2023-04-01 22:46:20,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:46:20,970 INFO L495 AbstractCegarLoop]: Abstraction has 70186 states and 93021 transitions. [2023-04-01 22:46:20,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:46:20,970 INFO L276 IsEmpty]: Start isEmpty. Operand 70186 states and 93021 transitions. [2023-04-01 22:46:20,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2023-04-01 22:46:20,978 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:46:20,978 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:46:20,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-01 22:46:21,184 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 22:46:21,184 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:46:21,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:46:21,185 INFO L85 PathProgramCache]: Analyzing trace with hash 432618791, now seen corresponding path program 1 times [2023-04-01 22:46:21,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:46:21,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011594814] [2023-04-01 22:46:21,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:46:21,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:46:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:21,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:46:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:21,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:46:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:21,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-04-01 22:46:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:21,774 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 225 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:46:21,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:46:21,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011594814] [2023-04-01 22:46:21,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011594814] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:46:21,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344068890] [2023-04-01 22:46:21,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:46:21,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:46:21,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:46:21,781 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:46:21,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 22:46:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:22,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-01 22:46:22,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:46:22,505 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 10 proven. 124 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-04-01 22:46:22,506 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:46:23,359 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 67 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:46:23,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344068890] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:46:23,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:46:23,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 9] total 20 [2023-04-01 22:46:23,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447457035] [2023-04-01 22:46:23,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:46:23,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-04-01 22:46:23,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:46:23,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-04-01 22:46:23,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2023-04-01 22:46:23,362 INFO L87 Difference]: Start difference. First operand 70186 states and 93021 transitions. Second operand has 20 states, 20 states have (on average 39.05) internal successors, (781), 18 states have internal predecessors, (781), 9 states have call successors, (14), 11 states have call predecessors, (14), 9 states have return successors, (9), 9 states have call predecessors, (9), 6 states have call successors, (9) [2023-04-01 22:47:16,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:47:16,845 INFO L93 Difference]: Finished difference Result 347362 states and 542536 transitions. [2023-04-01 22:47:16,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2023-04-01 22:47:16,846 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 39.05) internal successors, (781), 18 states have internal predecessors, (781), 9 states have call successors, (14), 11 states have call predecessors, (14), 9 states have return successors, (9), 9 states have call predecessors, (9), 6 states have call successors, (9) Word has length 300 [2023-04-01 22:47:16,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:47:18,312 INFO L225 Difference]: With dead ends: 347362 [2023-04-01 22:47:18,313 INFO L226 Difference]: Without dead ends: 277182 [2023-04-01 22:47:18,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 845 GetRequests, 664 SyntacticMatches, 1 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14057 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4632, Invalid=28310, Unknown=0, NotChecked=0, Total=32942 [2023-04-01 22:47:18,469 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 28411 mSDsluCounter, 2468 mSDsCounter, 0 mSdLazyCounter, 63858 mSolverCounterSat, 11505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28417 SdHoareTripleChecker+Valid, 2786 SdHoareTripleChecker+Invalid, 75363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 11505 IncrementalHoareTripleChecker+Valid, 63858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.1s IncrementalHoareTripleChecker+Time [2023-04-01 22:47:18,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28417 Valid, 2786 Invalid, 75363 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [11505 Valid, 63858 Invalid, 0 Unknown, 0 Unchecked, 45.1s Time] [2023-04-01 22:47:18,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277182 states. [2023-04-01 22:47:24,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277182 to 245431. [2023-04-01 22:47:24,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245431 states, 240548 states have (on average 1.1133910903437152) internal successors, (267824), 241651 states have internal predecessors, (267824), 1191 states have call successors, (1191), 1190 states have call predecessors, (1191), 3691 states have return successors, (51393), 2589 states have call predecessors, (51393), 1190 states have call successors, (51393) [2023-04-01 22:47:25,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245431 states to 245431 states and 320408 transitions. [2023-04-01 22:47:25,393 INFO L78 Accepts]: Start accepts. Automaton has 245431 states and 320408 transitions. Word has length 300 [2023-04-01 22:47:25,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:47:25,393 INFO L495 AbstractCegarLoop]: Abstraction has 245431 states and 320408 transitions. [2023-04-01 22:47:25,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 39.05) internal successors, (781), 18 states have internal predecessors, (781), 9 states have call successors, (14), 11 states have call predecessors, (14), 9 states have return successors, (9), 9 states have call predecessors, (9), 6 states have call successors, (9) [2023-04-01 22:47:25,394 INFO L276 IsEmpty]: Start isEmpty. Operand 245431 states and 320408 transitions. [2023-04-01 22:47:25,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2023-04-01 22:47:25,407 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:47:25,407 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:47:25,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 22:47:25,619 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 22:47:25,620 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:47:25,620 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:47:25,620 INFO L85 PathProgramCache]: Analyzing trace with hash -901720109, now seen corresponding path program 1 times [2023-04-01 22:47:25,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:47:25,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220979395] [2023-04-01 22:47:25,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:47:25,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:47:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:25,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:47:25,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:25,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:47:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:25,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-01 22:47:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:26,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-04-01 22:47:26,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:26,194 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 271 proven. 77 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-04-01 22:47:26,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:47:26,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220979395] [2023-04-01 22:47:26,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220979395] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:47:26,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357331885] [2023-04-01 22:47:26,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:47:26,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:47:26,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:47:26,196 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:47:26,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 22:47:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:26,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:47:26,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:47:26,475 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 361 proven. 2 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-04-01 22:47:26,475 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:47:26,743 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 272 proven. 78 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-04-01 22:47:26,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357331885] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:47:26,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:47:26,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 22:47:26,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417692652] [2023-04-01 22:47:26,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:47:26,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 22:47:26,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:47:26,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 22:47:26,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:47:26,746 INFO L87 Difference]: Start difference. First operand 245431 states and 320408 transitions. Second operand has 12 states, 12 states have (on average 36.75) internal successors, (441), 10 states have internal predecessors, (441), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 22:47:40,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:47:40,323 INFO L93 Difference]: Finished difference Result 568290 states and 751595 transitions. [2023-04-01 22:47:40,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 22:47:40,324 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 36.75) internal successors, (441), 10 states have internal predecessors, (441), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 351 [2023-04-01 22:47:40,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:47:41,654 INFO L225 Difference]: With dead ends: 568290 [2023-04-01 22:47:41,655 INFO L226 Difference]: Without dead ends: 320388 [2023-04-01 22:47:41,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 742 GetRequests, 717 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=467, Unknown=0, NotChecked=0, Total=650 [2023-04-01 22:47:41,963 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 9359 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 11508 mSolverCounterSat, 3076 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9359 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 14584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3076 IncrementalHoareTripleChecker+Valid, 11508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:47:41,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9359 Valid, 1135 Invalid, 14584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3076 Valid, 11508 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2023-04-01 22:47:42,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320388 states. [2023-04-01 22:47:47,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320388 to 304192. [2023-04-01 22:47:47,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304192 states, 298363 states have (on average 1.0878761776761865) internal successors, (324582), 299649 states have internal predecessors, (324582), 1479 states have call successors, (1479), 1478 states have call predecessors, (1479), 4349 states have return successors, (54440), 3064 states have call predecessors, (54440), 1478 states have call successors, (54440) [2023-04-01 22:47:48,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304192 states to 304192 states and 380501 transitions. [2023-04-01 22:47:48,385 INFO L78 Accepts]: Start accepts. Automaton has 304192 states and 380501 transitions. Word has length 351 [2023-04-01 22:47:48,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:47:48,386 INFO L495 AbstractCegarLoop]: Abstraction has 304192 states and 380501 transitions. [2023-04-01 22:47:48,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 36.75) internal successors, (441), 10 states have internal predecessors, (441), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 22:47:48,386 INFO L276 IsEmpty]: Start isEmpty. Operand 304192 states and 380501 transitions. [2023-04-01 22:47:48,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2023-04-01 22:47:48,402 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:47:48,402 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:47:48,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 22:47:48,608 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 22:47:48,609 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:47:48,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:47:48,609 INFO L85 PathProgramCache]: Analyzing trace with hash -196625653, now seen corresponding path program 1 times [2023-04-01 22:47:48,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:47:48,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598459659] [2023-04-01 22:47:48,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:47:48,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:47:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:49,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:47:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:49,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:47:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:49,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-01 22:47:49,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:49,334 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-04-01 22:47:49,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:47:49,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598459659] [2023-04-01 22:47:49,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598459659] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:47:49,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049409210] [2023-04-01 22:47:49,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:47:49,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:47:49,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:47:49,336 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:47:49,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 22:47:49,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:49,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-01 22:47:49,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:47:49,545 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-04-01 22:47:49,545 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:47:49,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049409210] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:47:49,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:47:49,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-04-01 22:47:49,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243799424] [2023-04-01 22:47:49,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:47:49,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:47:49,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:47:49,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:47:49,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:47:49,548 INFO L87 Difference]: Start difference. First operand 304192 states and 380501 transitions. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 22:47:56,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:47:56,892 INFO L93 Difference]: Finished difference Result 682950 states and 855140 transitions. [2023-04-01 22:47:56,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:47:56,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 370 [2023-04-01 22:47:56,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:47:59,684 INFO L225 Difference]: With dead ends: 682950 [2023-04-01 22:47:59,684 INFO L226 Difference]: Without dead ends: 369033 [2023-04-01 22:48:00,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 375 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:48:00,216 INFO L413 NwaCegarLoop]: 1663 mSDtfsCounter, 936 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2581 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 2581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:48:00,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 1799 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 2581 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-04-01 22:48:00,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369033 states. [2023-04-01 22:48:06,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369033 to 344085. [2023-04-01 22:48:06,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344085 states, 337944 states have (on average 1.0754681248964326) internal successors, (363448), 339186 states have internal predecessors, (363448), 1678 states have call successors, (1678), 1678 states have call predecessors, (1678), 4462 states have return successors, (52141), 3220 states have call predecessors, (52141), 1677 states have call successors, (52141) [2023-04-01 22:48:08,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344085 states to 344085 states and 417267 transitions. [2023-04-01 22:48:08,209 INFO L78 Accepts]: Start accepts. Automaton has 344085 states and 417267 transitions. Word has length 370 [2023-04-01 22:48:08,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:48:08,209 INFO L495 AbstractCegarLoop]: Abstraction has 344085 states and 417267 transitions. [2023-04-01 22:48:08,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 22:48:08,210 INFO L276 IsEmpty]: Start isEmpty. Operand 344085 states and 417267 transitions. [2023-04-01 22:48:08,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2023-04-01 22:48:08,224 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:48:08,224 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:48:08,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 22:48:08,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:48:08,431 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:48:08,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:48:08,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1322943504, now seen corresponding path program 1 times [2023-04-01 22:48:08,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:48:08,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868850960] [2023-04-01 22:48:08,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:48:08,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:48:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:48:08,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:48:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:48:08,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:48:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:48:08,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-01 22:48:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:48:08,853 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-04-01 22:48:08,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:48:08,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868850960] [2023-04-01 22:48:08,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868850960] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:48:08,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624051341] [2023-04-01 22:48:08,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:48:08,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:48:08,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:48:08,855 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:48:08,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 22:48:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:48:08,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:48:08,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:48:09,072 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-04-01 22:48:09,073 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:48:09,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624051341] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:48:09,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:48:09,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:48:09,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794600939] [2023-04-01 22:48:09,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:48:09,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:48:09,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:48:09,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:48:09,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:48:09,075 INFO L87 Difference]: Start difference. First operand 344085 states and 417267 transitions. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:48:16,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:48:16,234 INFO L93 Difference]: Finished difference Result 736241 states and 897843 transitions. [2023-04-01 22:48:16,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:48:16,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 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 376 [2023-04-01 22:48:16,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:48:17,642 INFO L225 Difference]: With dead ends: 736241 [2023-04-01 22:48:17,642 INFO L226 Difference]: Without dead ends: 392965 [2023-04-01 22:48:18,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:48:18,046 INFO L413 NwaCegarLoop]: 1621 mSDtfsCounter, 881 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 2458 mSolverCounterSat, 603 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 3061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 603 IncrementalHoareTripleChecker+Valid, 2458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-04-01 22:48:18,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 1760 Invalid, 3061 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [603 Valid, 2458 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-04-01 22:48:18,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392965 states. [2023-04-01 22:48:24,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392965 to 376058. [2023-04-01 22:48:24,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376058 states, 369645 states have (on average 1.054720069255637) internal successors, (389872), 370876 states have internal predecessors, (389872), 1838 states have call successors, (1838), 1838 states have call predecessors, (1838), 4574 states have return successors, (42732), 3343 states have call predecessors, (42732), 1837 states have call successors, (42732) [2023-04-01 22:48:25,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376058 states to 376058 states and 434442 transitions. [2023-04-01 22:48:25,803 INFO L78 Accepts]: Start accepts. Automaton has 376058 states and 434442 transitions. Word has length 376 [2023-04-01 22:48:25,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:48:25,804 INFO L495 AbstractCegarLoop]: Abstraction has 376058 states and 434442 transitions. [2023-04-01 22:48:25,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:48:25,804 INFO L276 IsEmpty]: Start isEmpty. Operand 376058 states and 434442 transitions. [2023-04-01 22:48:25,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2023-04-01 22:48:25,822 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:48:25,823 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-04-01 22:48:25,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 22:48:26,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:48:26,023 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:48:26,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:48:26,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1982435629, now seen corresponding path program 1 times [2023-04-01 22:48:26,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:48:26,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836158798] [2023-04-01 22:48:26,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:48:26,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:48:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:48:26,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:48:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:48:26,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:48:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:48:26,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-01 22:48:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:48:26,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-04-01 22:48:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:48:26,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-04-01 22:48:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:48:26,485 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 261 proven. 4 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2023-04-01 22:48:26,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:48:26,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836158798] [2023-04-01 22:48:26,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836158798] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:48:26,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859724259] [2023-04-01 22:48:26,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:48:26,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:48:26,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:48:26,487 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:48:26,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 22:48:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:48:26,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:48:26,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:48:26,721 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2023-04-01 22:48:26,722 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:48:26,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859724259] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:48:26,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:48:26,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-04-01 22:48:26,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533975372] [2023-04-01 22:48:26,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:48:26,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:48:26,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:48:26,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:48:26,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:48:26,845 INFO L87 Difference]: Start difference. First operand 376058 states and 434442 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:48:35,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:48:35,144 INFO L93 Difference]: Finished difference Result 801130 states and 930077 transitions. [2023-04-01 22:48:35,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:48:35,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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 435 [2023-04-01 22:48:35,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:48:36,650 INFO L225 Difference]: With dead ends: 801130 [2023-04-01 22:48:36,650 INFO L226 Difference]: Without dead ends: 425881 [2023-04-01 22:48:37,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 444 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:48:37,056 INFO L413 NwaCegarLoop]: 1560 mSDtfsCounter, 835 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 2759 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 3319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 2759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:48:37,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 1726 Invalid, 3319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [560 Valid, 2759 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-04-01 22:48:37,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425881 states.