/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/Problem18_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 23:37:17,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 23:37:17,859 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 23:37:17,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 23:37:17,910 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 23:37:17,922 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 23:37:17,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 23:37:17,922 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 23:37:17,922 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 23:37:17,923 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 23:37:17,923 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 23:37:17,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 23:37:17,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 23:37:17,923 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 23:37:17,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 23:37:17,924 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 23:37:17,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 23:37:17,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 23:37:17,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 23:37:17,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 23:37:17,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 23:37:17,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 23:37:17,924 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 23:37:17,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 23:37:17,924 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 23:37:17,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 23:37:17,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 23:37:17,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 23:37:17,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 23:37:17,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:37:17,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 23:37:17,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 23:37:17,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 23:37:17,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 23:37:17,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 23:37:17,925 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 23:37:17,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 23:37:17,925 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 23:37:17,925 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 23:37:17,925 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 23:37:17,926 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 23:37:18,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 23:37:18,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 23:37:18,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 23:37:18,119 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 23:37:18,119 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 23:37:18,120 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem18_label05.c [2023-04-01 23:37:19,091 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 23:37:19,422 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 23:37:19,423 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label05.c [2023-04-01 23:37:19,440 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52eb80fdf/5ed05c1a818946f99e507bbc254b9411/FLAG7d9ae3dd1 [2023-04-01 23:37:19,458 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52eb80fdf/5ed05c1a818946f99e507bbc254b9411 [2023-04-01 23:37:19,461 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 23:37:19,461 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 23:37:19,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 23:37:19,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 23:37:19,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 23:37:19,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:37:19" (1/1) ... [2023-04-01 23:37:19,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ea4bc80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:37:19, skipping insertion in model container [2023-04-01 23:37:19,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:37:19" (1/1) ... [2023-04-01 23:37:19,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 23:37:19,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 23:37:19,674 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/Problem18_label05.c[4165,4178] [2023-04-01 23:37:20,063 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:37:20,072 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 23:37:20,091 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/Problem18_label05.c[4165,4178] [2023-04-01 23:37:20,275 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:37:20,289 INFO L208 MainTranslator]: Completed translation [2023-04-01 23:37:20,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:37:20 WrapperNode [2023-04-01 23:37:20,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 23:37:20,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 23:37:20,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 23:37:20,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 23:37:20,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:37:20" (1/1) ... [2023-04-01 23:37:20,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:37:20" (1/1) ... [2023-04-01 23:37:20,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:37:20" (1/1) ... [2023-04-01 23:37:20,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:37:20" (1/1) ... [2023-04-01 23:37:20,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:37:20" (1/1) ... [2023-04-01 23:37:20,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:37:20" (1/1) ... [2023-04-01 23:37:20,433 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:37:20" (1/1) ... [2023-04-01 23:37:20,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:37:20" (1/1) ... [2023-04-01 23:37:20,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 23:37:20,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 23:37:20,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 23:37:20,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 23:37:20,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:37:20" (1/1) ... [2023-04-01 23:37:20,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:37:20,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:37:20,479 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 23:37:20,492 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 23:37:20,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 23:37:20,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 23:37:20,507 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 23:37:20,507 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 23:37:20,507 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 23:37:20,507 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 23:37:20,507 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 23:37:20,507 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 23:37:20,507 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 23:37:20,507 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 23:37:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 23:37:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 23:37:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 23:37:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 23:37:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 23:37:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 23:37:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 23:37:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 23:37:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 23:37:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 23:37:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 23:37:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 23:37:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 23:37:20,557 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 23:37:20,559 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 23:37:22,779 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 23:37:22,793 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 23:37:22,793 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 23:37:22,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:37:22 BoogieIcfgContainer [2023-04-01 23:37:22,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 23:37:22,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 23:37:22,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 23:37:22,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 23:37:22,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:37:19" (1/3) ... [2023-04-01 23:37:22,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e69db0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:37:22, skipping insertion in model container [2023-04-01 23:37:22,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:37:20" (2/3) ... [2023-04-01 23:37:22,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e69db0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:37:22, skipping insertion in model container [2023-04-01 23:37:22,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:37:22" (3/3) ... [2023-04-01 23:37:22,804 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label05.c [2023-04-01 23:37:22,815 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 23:37:22,815 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 23:37:22,874 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 23:37:22,890 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;@1c5767e9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 23:37:22,890 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 23:37:22,900 INFO L276 IsEmpty]: Start isEmpty. Operand has 774 states, 762 states have (on average 1.9041994750656168) internal successors, (1451), 763 states have internal predecessors, (1451), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 23:37:22,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-04-01 23:37:22,906 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:37:22,906 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] [2023-04-01 23:37:22,906 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:37:22,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:37:22,909 INFO L85 PathProgramCache]: Analyzing trace with hash -611972685, now seen corresponding path program 1 times [2023-04-01 23:37:22,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:37:22,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008582093] [2023-04-01 23:37:22,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:37:22,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:37:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:23,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:37:23,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:23,181 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 23:37:23,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:37:23,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008582093] [2023-04-01 23:37:23,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008582093] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:37:23,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:37:23,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 23:37:23,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923388984] [2023-04-01 23:37:23,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:37:23,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 23:37:23,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:37:23,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 23:37:23,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 23:37:23,204 INFO L87 Difference]: Start difference. First operand has 774 states, 762 states have (on average 1.9041994750656168) internal successors, (1451), 763 states have internal predecessors, (1451), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 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 23:37:26,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:37:26,702 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2023-04-01 23:37:26,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 23:37:26,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 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 44 [2023-04-01 23:37:26,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:37:26,736 INFO L225 Difference]: With dead ends: 2270 [2023-04-01 23:37:26,736 INFO L226 Difference]: Without dead ends: 1432 [2023-04-01 23:37:26,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:37:26,749 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2149 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 3363 mSolverCounterSat, 592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2149 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 3955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 592 IncrementalHoareTripleChecker+Valid, 3363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-04-01 23:37:26,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2149 Valid, 37 Invalid, 3955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [592 Valid, 3363 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-04-01 23:37:26,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2023-04-01 23:37:26,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2023-04-01 23:37:26,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 1404 states have (on average 1.5690883190883191) internal successors, (2203), 1406 states have internal predecessors, (2203), 8 states have call successors, (8), 8 states have call predecessors, (8), 12 states have return successors, (18), 10 states have call predecessors, (18), 7 states have call successors, (18) [2023-04-01 23:37:26,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2229 transitions. [2023-04-01 23:37:26,831 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2229 transitions. Word has length 44 [2023-04-01 23:37:26,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:37:26,832 INFO L495 AbstractCegarLoop]: Abstraction has 1425 states and 2229 transitions. [2023-04-01 23:37:26,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 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 23:37:26,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2229 transitions. [2023-04-01 23:37:26,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-01 23:37:26,837 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:37:26,837 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:37:26,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 23:37:26,838 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:37:26,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:37:26,839 INFO L85 PathProgramCache]: Analyzing trace with hash 424970874, now seen corresponding path program 1 times [2023-04-01 23:37:26,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:37:26,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834265420] [2023-04-01 23:37:26,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:37:26,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:37:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:27,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:37:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:27,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:37:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:27,209 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:37:27,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:37:27,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834265420] [2023-04-01 23:37:27,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834265420] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:37:27,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:37:27,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:37:27,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913510749] [2023-04-01 23:37:27,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:37:27,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:37:27,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:37:27,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:37:27,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:37:27,212 INFO L87 Difference]: Start difference. First operand 1425 states and 2229 transitions. Second operand has 7 states, 6 states have (on average 18.0) internal successors, (108), 4 states have internal predecessors, (108), 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 23:37:31,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:37:31,090 INFO L93 Difference]: Finished difference Result 4355 states and 6855 transitions. [2023-04-01 23:37:31,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 23:37:31,091 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 18.0) internal successors, (108), 4 states have internal predecessors, (108), 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 114 [2023-04-01 23:37:31,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:37:31,099 INFO L225 Difference]: With dead ends: 4355 [2023-04-01 23:37:31,099 INFO L226 Difference]: Without dead ends: 2936 [2023-04-01 23:37:31,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:37:31,102 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 3812 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 4845 mSolverCounterSat, 826 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3812 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 5671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 826 IncrementalHoareTripleChecker+Valid, 4845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:37:31,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3812 Valid, 123 Invalid, 5671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [826 Valid, 4845 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-04-01 23:37:31,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2023-04-01 23:37:31,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 2886. [2023-04-01 23:37:31,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2831 states have (on average 1.3733663016601907) internal successors, (3888), 2842 states have internal predecessors, (3888), 14 states have call successors, (14), 14 states have call predecessors, (14), 40 states have return successors, (85), 29 states have call predecessors, (85), 13 states have call successors, (85) [2023-04-01 23:37:31,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 3987 transitions. [2023-04-01 23:37:31,146 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 3987 transitions. Word has length 114 [2023-04-01 23:37:31,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:37:31,147 INFO L495 AbstractCegarLoop]: Abstraction has 2886 states and 3987 transitions. [2023-04-01 23:37:31,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 18.0) internal successors, (108), 4 states have internal predecessors, (108), 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 23:37:31,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 3987 transitions. [2023-04-01 23:37:31,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-04-01 23:37:31,150 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:37:31,150 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:37:31,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 23:37:31,150 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:37:31,150 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:37:31,150 INFO L85 PathProgramCache]: Analyzing trace with hash -974540898, now seen corresponding path program 1 times [2023-04-01 23:37:31,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:37:31,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582798056] [2023-04-01 23:37:31,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:37:31,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:37:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:31,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:37:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:31,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:37:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:31,470 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:37:31,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:37:31,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582798056] [2023-04-01 23:37:31,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582798056] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:37:31,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:37:31,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 23:37:31,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025933764] [2023-04-01 23:37:31,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:37:31,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 23:37:31,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:37:31,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 23:37:31,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:37:31,474 INFO L87 Difference]: Start difference. First operand 2886 states and 3987 transitions. Second operand has 8 states, 7 states have (on average 24.285714285714285) internal successors, (170), 5 states have internal predecessors, (170), 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 23:37:36,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:37:36,942 INFO L93 Difference]: Finished difference Result 11696 states and 16595 transitions. [2023-04-01 23:37:36,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 23:37:36,943 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 24.285714285714285) internal successors, (170), 5 states have internal predecessors, (170), 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 176 [2023-04-01 23:37:36,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:37:36,985 INFO L225 Difference]: With dead ends: 11696 [2023-04-01 23:37:36,985 INFO L226 Difference]: Without dead ends: 8816 [2023-04-01 23:37:36,993 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 23:37:36,995 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 3829 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 7432 mSolverCounterSat, 1568 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3829 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 9000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1568 IncrementalHoareTripleChecker+Valid, 7432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:37:36,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3829 Valid, 118 Invalid, 9000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1568 Valid, 7432 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-04-01 23:37:37,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8816 states. [2023-04-01 23:37:37,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8816 to 8757. [2023-04-01 23:37:37,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8757 states, 8556 states have (on average 1.2331697054698456) internal successors, (10551), 8606 states have internal predecessors, (10551), 38 states have call successors, (38), 38 states have call predecessors, (38), 162 states have return successors, (568), 112 states have call predecessors, (568), 37 states have call successors, (568) [2023-04-01 23:37:37,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8757 states to 8757 states and 11157 transitions. [2023-04-01 23:37:37,161 INFO L78 Accepts]: Start accepts. Automaton has 8757 states and 11157 transitions. Word has length 176 [2023-04-01 23:37:37,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:37:37,162 INFO L495 AbstractCegarLoop]: Abstraction has 8757 states and 11157 transitions. [2023-04-01 23:37:37,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 24.285714285714285) internal successors, (170), 5 states have internal predecessors, (170), 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 23:37:37,162 INFO L276 IsEmpty]: Start isEmpty. Operand 8757 states and 11157 transitions. [2023-04-01 23:37:37,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-04-01 23:37:37,167 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:37:37,168 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:37:37,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 23:37:37,168 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:37:37,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:37:37,169 INFO L85 PathProgramCache]: Analyzing trace with hash 477781926, now seen corresponding path program 1 times [2023-04-01 23:37:37,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:37:37,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474272173] [2023-04-01 23:37:37,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:37:37,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:37:37,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:37,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:37:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:37,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:37:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:37,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:37:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:37,410 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 23:37:37,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:37:37,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474272173] [2023-04-01 23:37:37,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474272173] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:37:37,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279591763] [2023-04-01 23:37:37,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:37:37,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:37:37,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:37:37,426 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 23:37:37,429 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 23:37:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:37,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:37:37,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:37:37,773 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 145 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:37:37,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:37:37,955 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 145 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:37:37,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279591763] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:37:37,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:37:37,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:37:37,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008777772] [2023-04-01 23:37:37,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:37:37,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:37:37,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:37:37,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:37:37,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:37:37,958 INFO L87 Difference]: Start difference. First operand 8757 states and 11157 transitions. Second operand has 11 states, 11 states have (on average 33.90909090909091) internal successors, (373), 9 states have internal predecessors, (373), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:37:44,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:37:44,012 INFO L93 Difference]: Finished difference Result 23722 states and 31240 transitions. [2023-04-01 23:37:44,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-01 23:37:44,013 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 33.90909090909091) internal successors, (373), 9 states have internal predecessors, (373), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 239 [2023-04-01 23:37:44,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:37:44,095 INFO L225 Difference]: With dead ends: 23722 [2023-04-01 23:37:44,095 INFO L226 Difference]: Without dead ends: 14114 [2023-04-01 23:37:44,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 482 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-04-01 23:37:44,141 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 3889 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 11951 mSolverCounterSat, 2022 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3892 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 13973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2022 IncrementalHoareTripleChecker+Valid, 11951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:37:44,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3892 Valid, 206 Invalid, 13973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2022 Valid, 11951 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-04-01 23:37:44,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14114 states. [2023-04-01 23:37:44,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14114 to 12499. [2023-04-01 23:37:44,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12499 states, 12177 states have (on average 1.119076948345241) internal successors, (13627), 12268 states have internal predecessors, (13627), 53 states have call successors, (53), 53 states have call predecessors, (53), 268 states have return successors, (809), 177 states have call predecessors, (809), 52 states have call successors, (809) [2023-04-01 23:37:44,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12499 states to 12499 states and 14489 transitions. [2023-04-01 23:37:44,560 INFO L78 Accepts]: Start accepts. Automaton has 12499 states and 14489 transitions. Word has length 239 [2023-04-01 23:37:44,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:37:44,561 INFO L495 AbstractCegarLoop]: Abstraction has 12499 states and 14489 transitions. [2023-04-01 23:37:44,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 33.90909090909091) internal successors, (373), 9 states have internal predecessors, (373), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:37:44,562 INFO L276 IsEmpty]: Start isEmpty. Operand 12499 states and 14489 transitions. [2023-04-01 23:37:44,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2023-04-01 23:37:44,565 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:37:44,565 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-04-01 23:37:44,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 23:37:44,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:37:44,769 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:37:44,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:37:44,770 INFO L85 PathProgramCache]: Analyzing trace with hash 257123992, now seen corresponding path program 1 times [2023-04-01 23:37:44,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:37:44,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20058758] [2023-04-01 23:37:44,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:37:44,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:37:44,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:44,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:37:44,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:44,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:37:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:44,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:37:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:44,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:37:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:45,084 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 250 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-04-01 23:37:45,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:37:45,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20058758] [2023-04-01 23:37:45,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20058758] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:37:45,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806651252] [2023-04-01 23:37:45,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:37:45,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:37:45,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:37:45,086 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 23:37:45,088 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 23:37:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:45,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:37:45,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:37:45,304 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 252 proven. 2 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-04-01 23:37:45,304 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:37:45,502 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 252 proven. 2 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-04-01 23:37:45,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806651252] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:37:45,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:37:45,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:37:45,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212583875] [2023-04-01 23:37:45,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:37:45,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:37:45,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:37:45,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:37:45,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:37:45,505 INFO L87 Difference]: Start difference. First operand 12499 states and 14489 transitions. Second operand has 11 states, 11 states have (on average 33.36363636363637) internal successors, (367), 9 states have internal predecessors, (367), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 23:37:49,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:37:49,559 INFO L93 Difference]: Finished difference Result 28580 states and 32866 transitions. [2023-04-01 23:37:49,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 23:37:49,560 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 33.36363636363637) internal successors, (367), 9 states have internal predecessors, (367), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 342 [2023-04-01 23:37:49,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:37:49,591 INFO L225 Difference]: With dead ends: 28580 [2023-04-01 23:37:49,591 INFO L226 Difference]: Without dead ends: 16087 [2023-04-01 23:37:49,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 715 GetRequests, 694 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 23:37:49,611 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 3983 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 7745 mSolverCounterSat, 1160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3989 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 8905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1160 IncrementalHoareTripleChecker+Valid, 7745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:37:49,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3989 Valid, 156 Invalid, 8905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1160 Valid, 7745 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-04-01 23:37:49,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16087 states. [2023-04-01 23:37:49,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16087 to 12499. [2023-04-01 23:37:49,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12499 states, 12177 states have (on average 1.0774410774410774) internal successors, (13120), 12268 states have internal predecessors, (13120), 53 states have call successors, (53), 53 states have call predecessors, (53), 268 states have return successors, (548), 177 states have call predecessors, (548), 52 states have call successors, (548) [2023-04-01 23:37:49,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12499 states to 12499 states and 13721 transitions. [2023-04-01 23:37:49,800 INFO L78 Accepts]: Start accepts. Automaton has 12499 states and 13721 transitions. Word has length 342 [2023-04-01 23:37:49,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:37:49,801 INFO L495 AbstractCegarLoop]: Abstraction has 12499 states and 13721 transitions. [2023-04-01 23:37:49,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 33.36363636363637) internal successors, (367), 9 states have internal predecessors, (367), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 23:37:49,801 INFO L276 IsEmpty]: Start isEmpty. Operand 12499 states and 13721 transitions. [2023-04-01 23:37:49,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2023-04-01 23:37:49,804 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:37:49,805 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 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 23:37:49,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 23:37:50,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:37:50,028 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:37:50,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:37:50,029 INFO L85 PathProgramCache]: Analyzing trace with hash -979025589, now seen corresponding path program 1 times [2023-04-01 23:37:50,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:37:50,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84661188] [2023-04-01 23:37:50,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:37:50,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:37:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:50,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:37:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:50,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:37:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:50,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:37:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:50,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:37:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:50,285 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 114 proven. 3 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-04-01 23:37:50,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:37:50,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84661188] [2023-04-01 23:37:50,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84661188] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:37:50,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966748824] [2023-04-01 23:37:50,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:37:50,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:37:50,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:37:50,314 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 23:37:50,315 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 23:37:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:50,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:37:50,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:37:50,471 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-04-01 23:37:50,471 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:37:50,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966748824] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:37:50,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:37:50,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:37:50,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262452407] [2023-04-01 23:37:50,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:37:50,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:37:50,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:37:50,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:37:50,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:37:50,473 INFO L87 Difference]: Start difference. First operand 12499 states and 13721 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 23:37:52,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:37:52,468 INFO L93 Difference]: Finished difference Result 34971 states and 39133 transitions. [2023-04-01 23:37:52,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:37:52,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 359 [2023-04-01 23:37:52,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:37:52,519 INFO L225 Difference]: With dead ends: 34971 [2023-04-01 23:37:52,519 INFO L226 Difference]: Without dead ends: 21686 [2023-04-01 23:37:52,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 367 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 23:37:52,543 INFO L413 NwaCegarLoop]: 1165 mSDtfsCounter, 663 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 2362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:37:52,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 1191 Invalid, 2362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 1877 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-04-01 23:37:52,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21686 states. [2023-04-01 23:37:52,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21686 to 21672. [2023-04-01 23:37:52,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21672 states, 21249 states have (on average 1.0441903148383453) internal successors, (22188), 21362 states have internal predecessors, (22188), 92 states have call successors, (92), 92 states have call predecessors, (92), 330 states have return successors, (979), 217 states have call predecessors, (979), 91 states have call successors, (979) [2023-04-01 23:37:52,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21672 states to 21672 states and 23259 transitions. [2023-04-01 23:37:52,874 INFO L78 Accepts]: Start accepts. Automaton has 21672 states and 23259 transitions. Word has length 359 [2023-04-01 23:37:52,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:37:52,874 INFO L495 AbstractCegarLoop]: Abstraction has 21672 states and 23259 transitions. [2023-04-01 23:37:52,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 23:37:52,874 INFO L276 IsEmpty]: Start isEmpty. Operand 21672 states and 23259 transitions. [2023-04-01 23:37:52,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-04-01 23:37:52,877 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:37:52,878 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 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 23:37:52,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-01 23:37:53,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:37:53,082 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:37:53,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:37:53,084 INFO L85 PathProgramCache]: Analyzing trace with hash -190002092, now seen corresponding path program 1 times [2023-04-01 23:37:53,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:37:53,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401899389] [2023-04-01 23:37:53,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:37:53,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:37:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:53,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:37:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:53,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:37:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:53,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:37:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:53,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:37:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:53,302 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 114 proven. 3 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-04-01 23:37:53,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:37:53,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401899389] [2023-04-01 23:37:53,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401899389] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:37:53,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735907485] [2023-04-01 23:37:53,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:37:53,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:37:53,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:37:53,321 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 23:37:53,351 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 23:37:53,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:53,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:37:53,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:37:53,504 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-04-01 23:37:53,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:37:53,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735907485] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:37:53,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:37:53,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:37:53,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104104097] [2023-04-01 23:37:53,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:37:53,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:37:53,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:37:53,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:37:53,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:37:53,506 INFO L87 Difference]: Start difference. First operand 21672 states and 23259 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 23:37:55,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:37:55,215 INFO L93 Difference]: Finished difference Result 50440 states and 54860 transitions. [2023-04-01 23:37:55,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:37:55,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 360 [2023-04-01 23:37:55,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:37:55,268 INFO L225 Difference]: With dead ends: 50440 [2023-04-01 23:37:55,268 INFO L226 Difference]: Without dead ends: 28774 [2023-04-01 23:37:55,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 368 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 23:37:55,296 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 694 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 2037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:37:55,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 196 Invalid, 2037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 1715 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-01 23:37:55,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28774 states. [2023-04-01 23:37:55,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28774 to 27361. [2023-04-01 23:37:55,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27361 states, 26861 states have (on average 1.0489557350806) internal successors, (28176), 26988 states have internal predecessors, (28176), 116 states have call successors, (116), 116 states have call predecessors, (116), 383 states have return successors, (1431), 256 states have call predecessors, (1431), 115 states have call successors, (1431) [2023-04-01 23:37:55,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27361 states to 27361 states and 29723 transitions. [2023-04-01 23:37:55,610 INFO L78 Accepts]: Start accepts. Automaton has 27361 states and 29723 transitions. Word has length 360 [2023-04-01 23:37:55,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:37:55,611 INFO L495 AbstractCegarLoop]: Abstraction has 27361 states and 29723 transitions. [2023-04-01 23:37:55,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 23:37:55,611 INFO L276 IsEmpty]: Start isEmpty. Operand 27361 states and 29723 transitions. [2023-04-01 23:37:55,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-04-01 23:37:55,614 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:37:55,614 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 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 23:37:55,631 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 23:37:55,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:37:55,820 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:37:55,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:37:55,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1636501435, now seen corresponding path program 1 times [2023-04-01 23:37:55,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:37:55,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844063267] [2023-04-01 23:37:55,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:37:55,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:37:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:56,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:37:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:56,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:37:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:56,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:37:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:56,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:37:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:56,279 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 114 proven. 3 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-04-01 23:37:56,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:37:56,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844063267] [2023-04-01 23:37:56,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844063267] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:37:56,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592039484] [2023-04-01 23:37:56,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:37:56,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:37:56,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:37:56,293 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 23:37:56,294 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 23:37:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:56,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:37:56,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:37:56,450 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-04-01 23:37:56,450 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:37:56,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592039484] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:37:56,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:37:56,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:37:56,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938660316] [2023-04-01 23:37:56,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:37:56,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:37:56,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:37:56,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:37:56,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:37:56,452 INFO L87 Difference]: Start difference. First operand 27361 states and 29723 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 23:37:58,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:37:58,130 INFO L93 Difference]: Finished difference Result 67490 states and 74366 transitions. [2023-04-01 23:37:58,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:37:58,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 367 [2023-04-01 23:37:58,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:37:58,205 INFO L225 Difference]: With dead ends: 67490 [2023-04-01 23:37:58,205 INFO L226 Difference]: Without dead ends: 39421 [2023-04-01 23:37:58,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 375 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 23:37:58,245 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 672 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1760 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 2053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 1760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:37:58,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 943 Invalid, 2053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 1760 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-01 23:37:58,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39421 states. [2023-04-01 23:37:58,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39421 to 38014. [2023-04-01 23:37:59,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38014 states, 37373 states have (on average 1.0487250153854386) internal successors, (39194), 37530 states have internal predecessors, (39194), 161 states have call successors, (161), 161 states have call predecessors, (161), 479 states have return successors, (2316), 322 states have call predecessors, (2316), 160 states have call successors, (2316) [2023-04-01 23:37:59,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38014 states to 38014 states and 41671 transitions. [2023-04-01 23:37:59,085 INFO L78 Accepts]: Start accepts. Automaton has 38014 states and 41671 transitions. Word has length 367 [2023-04-01 23:37:59,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:37:59,086 INFO L495 AbstractCegarLoop]: Abstraction has 38014 states and 41671 transitions. [2023-04-01 23:37:59,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 23:37:59,086 INFO L276 IsEmpty]: Start isEmpty. Operand 38014 states and 41671 transitions. [2023-04-01 23:37:59,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2023-04-01 23:37:59,093 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:37:59,093 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-04-01 23:37:59,110 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 23:37:59,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:37:59,299 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:37:59,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:37:59,299 INFO L85 PathProgramCache]: Analyzing trace with hash -418506258, now seen corresponding path program 1 times [2023-04-01 23:37:59,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:37:59,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406152331] [2023-04-01 23:37:59,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:37:59,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:37:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:59,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:37:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:59,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:37:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:59,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:37:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:59,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:37:59,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:59,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2023-04-01 23:37:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:59,814 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 150 proven. 16 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2023-04-01 23:37:59,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:37:59,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406152331] [2023-04-01 23:37:59,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406152331] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:37:59,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109483656] [2023-04-01 23:37:59,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:37:59,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:37:59,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:37:59,815 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 23:37:59,817 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 23:37:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:59,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:37:59,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:38:00,011 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2023-04-01 23:38:00,011 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:38:00,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109483656] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:38:00,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:38:00,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2023-04-01 23:38:00,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189082589] [2023-04-01 23:38:00,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:38:00,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:38:00,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:38:00,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:38:00,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:38:00,013 INFO L87 Difference]: Start difference. First operand 38014 states and 41671 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 23:38:01,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:38:01,485 INFO L93 Difference]: Finished difference Result 76022 states and 83336 transitions. [2023-04-01 23:38:01,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:38:01,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 463 [2023-04-01 23:38:01,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:38:01,547 INFO L225 Difference]: With dead ends: 76022 [2023-04-01 23:38:01,547 INFO L226 Difference]: Without dead ends: 38014 [2023-04-01 23:38:01,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:38:01,590 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 769 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1702 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:38:01,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 790 Invalid, 1859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1702 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-01 23:38:01,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38014 states. [2023-04-01 23:38:02,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38014 to 38014. [2023-04-01 23:38:02,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38014 states, 37373 states have (on average 1.0423300243491291) internal successors, (38955), 37530 states have internal predecessors, (38955), 161 states have call successors, (161), 161 states have call predecessors, (161), 479 states have return successors, (2082), 322 states have call predecessors, (2082), 160 states have call successors, (2082) [2023-04-01 23:38:02,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38014 states to 38014 states and 41198 transitions. [2023-04-01 23:38:02,090 INFO L78 Accepts]: Start accepts. Automaton has 38014 states and 41198 transitions. Word has length 463 [2023-04-01 23:38:02,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:38:02,091 INFO L495 AbstractCegarLoop]: Abstraction has 38014 states and 41198 transitions. [2023-04-01 23:38:02,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 23:38:02,091 INFO L276 IsEmpty]: Start isEmpty. Operand 38014 states and 41198 transitions. [2023-04-01 23:38:02,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2023-04-01 23:38:02,110 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:38:02,110 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:38:02,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-04-01 23:38:02,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:38:02,315 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:38:02,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:38:02,316 INFO L85 PathProgramCache]: Analyzing trace with hash 670403177, now seen corresponding path program 1 times [2023-04-01 23:38:02,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:38:02,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781344403] [2023-04-01 23:38:02,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:38:02,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:38:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:02,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:38:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:02,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:38:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:02,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:38:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:02,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:38:02,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:02,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:38:02,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:03,004 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 114 proven. 3 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-04-01 23:38:03,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:38:03,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781344403] [2023-04-01 23:38:03,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781344403] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:38:03,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188969155] [2023-04-01 23:38:03,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:38:03,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:38:03,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:38:03,005 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 23:38:03,021 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 23:38:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:03,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 933 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 23:38:03,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:38:03,253 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-04-01 23:38:03,253 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:38:03,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188969155] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:38:03,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:38:03,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:38:03,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546851289] [2023-04-01 23:38:03,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:38:03,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:38:03,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:38:03,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:38:03,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:38:03,256 INFO L87 Difference]: Start difference. First operand 38014 states and 41198 transitions. Second operand has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:38:05,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:38:05,187 INFO L93 Difference]: Finished difference Result 90896 states and 99337 transitions. [2023-04-01 23:38:05,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:38:05,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 663 [2023-04-01 23:38:05,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:38:05,280 INFO L225 Difference]: With dead ends: 90896 [2023-04-01 23:38:05,280 INFO L226 Difference]: Without dead ends: 52888 [2023-04-01 23:38:05,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 678 GetRequests, 674 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:38:05,314 INFO L413 NwaCegarLoop]: 1003 mSDtfsCounter, 673 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1776 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 2017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:38:05,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 1029 Invalid, 2017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1776 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-01 23:38:05,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52888 states. [2023-04-01 23:38:05,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52888 to 50780. [2023-04-01 23:38:06,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50780 states, 49978 states have (on average 1.0369962783624795) internal successors, (51827), 50164 states have internal predecessors, (51827), 215 states have call successors, (215), 215 states have call predecessors, (215), 586 states have return successors, (2660), 400 states have call predecessors, (2660), 214 states have call successors, (2660) [2023-04-01 23:38:06,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50780 states to 50780 states and 54702 transitions. [2023-04-01 23:38:06,086 INFO L78 Accepts]: Start accepts. Automaton has 50780 states and 54702 transitions. Word has length 663 [2023-04-01 23:38:06,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:38:06,087 INFO L495 AbstractCegarLoop]: Abstraction has 50780 states and 54702 transitions. [2023-04-01 23:38:06,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:38:06,087 INFO L276 IsEmpty]: Start isEmpty. Operand 50780 states and 54702 transitions. [2023-04-01 23:38:06,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2023-04-01 23:38:06,230 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:38:06,231 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:38:06,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 23:38:06,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:38:06,436 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:38:06,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:38:06,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1845825359, now seen corresponding path program 1 times [2023-04-01 23:38:06,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:38:06,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308646158] [2023-04-01 23:38:06,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:38:06,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:38:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:06,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:38:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:06,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:38:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:06,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:38:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:06,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:38:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:07,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:38:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:07,174 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 114 proven. 3 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-04-01 23:38:07,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:38:07,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308646158] [2023-04-01 23:38:07,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308646158] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:38:07,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733229930] [2023-04-01 23:38:07,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:38:07,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:38:07,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:38:07,176 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:38:07,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 23:38:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:07,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:38:07,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:38:07,398 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-04-01 23:38:07,398 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:38:07,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733229930] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:38:07,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:38:07,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:38:07,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100349734] [2023-04-01 23:38:07,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:38:07,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:38:07,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:38:07,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:38:07,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:38:07,400 INFO L87 Difference]: Start difference. First operand 50780 states and 54702 transitions. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:38:09,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:38:09,350 INFO L93 Difference]: Finished difference Result 114958 states and 124397 transitions. [2023-04-01 23:38:09,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:38:09,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 772 [2023-04-01 23:38:09,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:38:09,684 INFO L225 Difference]: With dead ends: 114958 [2023-04-01 23:38:09,685 INFO L226 Difference]: Without dead ends: 63477 [2023-04-01 23:38:09,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 787 GetRequests, 783 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 23:38:09,747 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 671 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1766 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 2103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 1766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:38:09,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 863 Invalid, 2103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 1766 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-01 23:38:09,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63477 states. [2023-04-01 23:38:10,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63477 to 59265. [2023-04-01 23:38:10,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59265 states, 58365 states have (on average 1.0386190353807934) internal successors, (60619), 58568 states have internal predecessors, (60619), 251 states have call successors, (251), 251 states have call predecessors, (251), 648 states have return successors, (3386), 445 states have call predecessors, (3386), 250 states have call successors, (3386) [2023-04-01 23:38:10,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59265 states to 59265 states and 64256 transitions. [2023-04-01 23:38:10,727 INFO L78 Accepts]: Start accepts. Automaton has 59265 states and 64256 transitions. Word has length 772 [2023-04-01 23:38:10,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:38:10,728 INFO L495 AbstractCegarLoop]: Abstraction has 59265 states and 64256 transitions. [2023-04-01 23:38:10,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:38:10,728 INFO L276 IsEmpty]: Start isEmpty. Operand 59265 states and 64256 transitions. [2023-04-01 23:38:10,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 806 [2023-04-01 23:38:10,840 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:38:10,840 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:38:10,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-01 23:38:11,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-04-01 23:38:11,041 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:38:11,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:38:11,041 INFO L85 PathProgramCache]: Analyzing trace with hash -963306030, now seen corresponding path program 1 times [2023-04-01 23:38:11,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:38:11,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626584231] [2023-04-01 23:38:11,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:38:11,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:38:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:11,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:38:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:11,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:38:11,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:11,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:38:12,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:12,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2023-04-01 23:38:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:12,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:38:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:12,408 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 455 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-04-01 23:38:12,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:38:12,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626584231] [2023-04-01 23:38:12,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626584231] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:38:12,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566552590] [2023-04-01 23:38:12,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:38:12,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:38:12,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:38:12,410 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:38:12,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 23:38:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:12,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 1074 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 23:38:12,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:38:13,076 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 457 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-04-01 23:38:13,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:38:14,077 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 457 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-04-01 23:38:14,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566552590] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:38:14,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:38:14,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:38:14,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084858625] [2023-04-01 23:38:14,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:38:14,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:38:14,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:38:14,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:38:14,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:38:14,081 INFO L87 Difference]: Start difference. First operand 59265 states and 64256 transitions. Second operand has 11 states, 11 states have (on average 136.1818181818182) internal successors, (1498), 9 states have internal predecessors, (1498), 7 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-04-01 23:38:20,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:38:20,126 INFO L93 Difference]: Finished difference Result 132320 states and 144026 transitions. [2023-04-01 23:38:20,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-04-01 23:38:20,127 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 136.1818181818182) internal successors, (1498), 9 states have internal predecessors, (1498), 7 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 805 [2023-04-01 23:38:20,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:38:20,260 INFO L225 Difference]: With dead ends: 132320 [2023-04-01 23:38:20,260 INFO L226 Difference]: Without dead ends: 73763 [2023-04-01 23:38:20,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1681 GetRequests, 1641 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=299, Invalid=1183, Unknown=0, NotChecked=0, Total=1482 [2023-04-01 23:38:20,316 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 3675 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 9131 mSolverCounterSat, 673 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3675 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 9804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 673 IncrementalHoareTripleChecker+Valid, 9131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:38:20,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3675 Valid, 423 Invalid, 9804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [673 Valid, 9131 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-04-01 23:38:20,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73763 states. [2023-04-01 23:38:21,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73763 to 72303. [2023-04-01 23:38:21,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72303 states, 71128 states have (on average 1.0332920931278822) internal successors, (73496), 71430 states have internal predecessors, (73496), 305 states have call successors, (305), 305 states have call predecessors, (305), 869 states have return successors, (3994), 567 states have call predecessors, (3994), 304 states have call successors, (3994) [2023-04-01 23:38:21,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72303 states to 72303 states and 77795 transitions. [2023-04-01 23:38:21,655 INFO L78 Accepts]: Start accepts. Automaton has 72303 states and 77795 transitions. Word has length 805 [2023-04-01 23:38:21,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:38:21,656 INFO L495 AbstractCegarLoop]: Abstraction has 72303 states and 77795 transitions. [2023-04-01 23:38:21,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 136.1818181818182) internal successors, (1498), 9 states have internal predecessors, (1498), 7 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-04-01 23:38:21,657 INFO L276 IsEmpty]: Start isEmpty. Operand 72303 states and 77795 transitions. [2023-04-01 23:38:21,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 821 [2023-04-01 23:38:21,694 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:38:21,694 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:38:21,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-04-01 23:38:21,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:38:21,900 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:38:21,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:38:21,900 INFO L85 PathProgramCache]: Analyzing trace with hash -292043471, now seen corresponding path program 1 times [2023-04-01 23:38:21,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:38:21,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776385082] [2023-04-01 23:38:21,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:38:21,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:38:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:23,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:38:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:23,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:38:23,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:23,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:38:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:23,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:38:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:23,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:38:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:24,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:38:24,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:24,160 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 302 proven. 38 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-04-01 23:38:24,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:38:24,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776385082] [2023-04-01 23:38:24,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776385082] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:38:24,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214868086] [2023-04-01 23:38:24,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:38:24,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:38:24,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:38:24,181 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:38:24,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-01 23:38:24,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:24,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 1110 conjuncts, 16 conjunts are in the unsatisfiable core [2023-04-01 23:38:24,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:38:25,079 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 263 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-04-01 23:38:25,079 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:38:25,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214868086] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:38:25,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:38:25,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-04-01 23:38:25,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252389873] [2023-04-01 23:38:25,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:38:25,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:38:25,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:38:25,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:38:25,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:38:25,082 INFO L87 Difference]: Start difference. First operand 72303 states and 77795 transitions. Second operand has 5 states, 5 states have (on average 133.4) internal successors, (667), 4 states have internal predecessors, (667), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:38:27,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:38:27,713 INFO L93 Difference]: Finished difference Result 146766 states and 157897 transitions. [2023-04-01 23:38:27,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 23:38:27,713 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 133.4) internal successors, (667), 4 states have internal predecessors, (667), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 820 [2023-04-01 23:38:27,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:38:27,837 INFO L225 Difference]: With dead ends: 146766 [2023-04-01 23:38:27,838 INFO L226 Difference]: Without dead ends: 75171 [2023-04-01 23:38:27,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 843 GetRequests, 831 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:38:27,895 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 1872 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 3281 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 3430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 3281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:38:27,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1872 Valid, 119 Invalid, 3430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 3281 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-01 23:38:27,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75171 states. [2023-04-01 23:38:28,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75171 to 74458. [2023-04-01 23:38:28,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74458 states, 73243 states have (on average 1.0315388501290226) internal successors, (75553), 73562 states have internal predecessors, (75553), 314 states have call successors, (314), 314 states have call predecessors, (314), 900 states have return successors, (3973), 581 states have call predecessors, (3973), 313 states have call successors, (3973) [2023-04-01 23:38:29,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74458 states to 74458 states and 79840 transitions. [2023-04-01 23:38:29,059 INFO L78 Accepts]: Start accepts. Automaton has 74458 states and 79840 transitions. Word has length 820 [2023-04-01 23:38:29,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:38:29,059 INFO L495 AbstractCegarLoop]: Abstraction has 74458 states and 79840 transitions. [2023-04-01 23:38:29,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 133.4) internal successors, (667), 4 states have internal predecessors, (667), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:38:29,059 INFO L276 IsEmpty]: Start isEmpty. Operand 74458 states and 79840 transitions. [2023-04-01 23:38:29,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1128 [2023-04-01 23:38:29,107 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:38:29,107 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:38:29,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-04-01 23:38:29,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-01 23:38:29,312 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:38:29,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:38:29,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1964706973, now seen corresponding path program 1 times [2023-04-01 23:38:29,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:38:29,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6015928] [2023-04-01 23:38:29,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:38:29,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:38:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:30,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:38:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:30,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:38:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:30,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:38:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:30,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-04-01 23:38:30,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:30,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2023-04-01 23:38:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:30,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2023-04-01 23:38:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:31,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:38:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:31,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:38:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:31,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1017 backedges. 632 proven. 39 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2023-04-01 23:38:31,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:38:31,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6015928] [2023-04-01 23:38:31,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6015928] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:38:31,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936892331] [2023-04-01 23:38:31,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:38:31,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:38:31,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:38:31,663 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:38:31,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-01 23:38:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:31,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 1475 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 23:38:31,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:38:32,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1017 backedges. 569 proven. 0 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2023-04-01 23:38:32,255 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:38:32,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936892331] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:38:32,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:38:32,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-04-01 23:38:32,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529422490] [2023-04-01 23:38:32,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:38:32,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:38:32,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:38:32,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:38:32,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:38:32,258 INFO L87 Difference]: Start difference. First operand 74458 states and 79840 transitions. Second operand has 5 states, 5 states have (on average 170.2) internal successors, (851), 4 states have internal predecessors, (851), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-01 23:38:34,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:38:34,695 INFO L93 Difference]: Finished difference Result 151068 states and 161989 transitions. [2023-04-01 23:38:34,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 23:38:34,695 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 170.2) internal successors, (851), 4 states have internal predecessors, (851), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 1127 [2023-04-01 23:38:34,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:38:34,810 INFO L225 Difference]: With dead ends: 151068 [2023-04-01 23:38:34,810 INFO L226 Difference]: Without dead ends: 76616 [2023-04-01 23:38:34,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1154 GetRequests, 1142 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:38:34,880 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 1542 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 3169 mSolverCounterSat, 488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 3657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 488 IncrementalHoareTripleChecker+Valid, 3169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:38:34,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1542 Valid, 115 Invalid, 3657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [488 Valid, 3169 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-01 23:38:34,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76616 states. [2023-04-01 23:38:35,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76616 to 76601. [2023-04-01 23:38:35,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76601 states, 75353 states have (on average 1.0285191034199037) internal successors, (77502), 75680 states have internal predecessors, (77502), 323 states have call successors, (323), 323 states have call predecessors, (323), 924 states have return successors, (3751), 597 states have call predecessors, (3751), 322 states have call successors, (3751) [2023-04-01 23:38:36,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76601 states to 76601 states and 81576 transitions. [2023-04-01 23:38:36,170 INFO L78 Accepts]: Start accepts. Automaton has 76601 states and 81576 transitions. Word has length 1127 [2023-04-01 23:38:36,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:38:36,171 INFO L495 AbstractCegarLoop]: Abstraction has 76601 states and 81576 transitions. [2023-04-01 23:38:36,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 170.2) internal successors, (851), 4 states have internal predecessors, (851), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-01 23:38:36,171 INFO L276 IsEmpty]: Start isEmpty. Operand 76601 states and 81576 transitions. [2023-04-01 23:38:36,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1655 [2023-04-01 23:38:36,217 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:38:36,218 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 23:38:36,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-04-01 23:38:36,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-04-01 23:38:36,424 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:38:36,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:38:36,424 INFO L85 PathProgramCache]: Analyzing trace with hash 351239651, now seen corresponding path program 1 times [2023-04-01 23:38:36,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:38:36,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152022319] [2023-04-01 23:38:36,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:38:36,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:38:36,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:38,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:38:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:38,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:38:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:38,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:38:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:38,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:38:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:38,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:38:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:38,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:38:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:38,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:38:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:38,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2023-04-01 23:38:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:38,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1070 [2023-04-01 23:38:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:39,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:38:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:39,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:38:39,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:39,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 965 proven. 40 refuted. 0 times theorem prover too weak. 1111 trivial. 0 not checked. [2023-04-01 23:38:39,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:38:39,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152022319] [2023-04-01 23:38:39,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152022319] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:38:39,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198864615] [2023-04-01 23:38:39,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:38:39,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:38:39,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:38:39,521 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:38:39,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-04-01 23:38:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:39,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 2081 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 23:38:39,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:38:40,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 1631 proven. 2 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2023-04-01 23:38:40,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:38:42,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 449 proven. 229 refuted. 0 times theorem prover too weak. 1438 trivial. 0 not checked. [2023-04-01 23:38:42,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198864615] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:38:42,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:38:42,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2023-04-01 23:38:42,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329229750] [2023-04-01 23:38:42,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:38:42,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 23:38:42,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:38:42,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 23:38:42,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-04-01 23:38:42,113 INFO L87 Difference]: Start difference. First operand 76601 states and 81576 transitions. Second operand has 13 states, 13 states have (on average 128.84615384615384) internal successors, (1675), 11 states have internal predecessors, (1675), 7 states have call successors, (18), 7 states have call predecessors, (18), 8 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2023-04-01 23:38:51,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:38:51,953 INFO L93 Difference]: Finished difference Result 207558 states and 223933 transitions. [2023-04-01 23:38:51,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-04-01 23:38:51,954 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 128.84615384615384) internal successors, (1675), 11 states have internal predecessors, (1675), 7 states have call successors, (18), 7 states have call predecessors, (18), 8 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) Word has length 1654 [2023-04-01 23:38:51,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:38:52,206 INFO L225 Difference]: With dead ends: 207558 [2023-04-01 23:38:52,206 INFO L226 Difference]: Without dead ends: 129549 [2023-04-01 23:38:52,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3465 GetRequests, 3389 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2091 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1166, Invalid=4686, Unknown=0, NotChecked=0, Total=5852 [2023-04-01 23:38:52,274 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 9973 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 12413 mSolverCounterSat, 2433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9973 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 14846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2433 IncrementalHoareTripleChecker+Valid, 12413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:38:52,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9973 Valid, 452 Invalid, 14846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2433 Valid, 12413 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-04-01 23:38:52,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129549 states. [2023-04-01 23:38:53,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129549 to 118954. [2023-04-01 23:38:53,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118954 states, 117248 states have (on average 1.023420442139738) internal successors, (119994), 117636 states have internal predecessors, (119994), 503 states have call successors, (503), 503 states have call predecessors, (503), 1202 states have return successors, (5210), 814 states have call predecessors, (5210), 502 states have call successors, (5210) [2023-04-01 23:38:54,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118954 states to 118954 states and 125707 transitions. [2023-04-01 23:38:54,212 INFO L78 Accepts]: Start accepts. Automaton has 118954 states and 125707 transitions. Word has length 1654 [2023-04-01 23:38:54,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:38:54,212 INFO L495 AbstractCegarLoop]: Abstraction has 118954 states and 125707 transitions. [2023-04-01 23:38:54,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 128.84615384615384) internal successors, (1675), 11 states have internal predecessors, (1675), 7 states have call successors, (18), 7 states have call predecessors, (18), 8 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2023-04-01 23:38:54,213 INFO L276 IsEmpty]: Start isEmpty. Operand 118954 states and 125707 transitions. [2023-04-01 23:38:54,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1734 [2023-04-01 23:38:54,285 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:38:54,286 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:38:54,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-04-01 23:38:54,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-04-01 23:38:54,493 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:38:54,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:38:54,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1902685017, now seen corresponding path program 1 times [2023-04-01 23:38:54,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:38:54,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282428414] [2023-04-01 23:38:54,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:38:54,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:38:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:55,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:38:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:55,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:38:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:55,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:38:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:55,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:38:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:55,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:38:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:55,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:38:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:55,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:38:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:55,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2023-04-01 23:38:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:55,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1003 [2023-04-01 23:38:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:55,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1141 [2023-04-01 23:38:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:55,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:38:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:55,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:38:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:55,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2492 backedges. 678 proven. 137 refuted. 0 times theorem prover too weak. 1677 trivial. 0 not checked. [2023-04-01 23:38:55,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:38:55,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282428414] [2023-04-01 23:38:55,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282428414] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:38:55,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487369160] [2023-04-01 23:38:55,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:38:55,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:38:55,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:38:55,782 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:38:55,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-04-01 23:38:56,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:56,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 2209 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:38:56,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:38:56,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2492 backedges. 1761 proven. 2 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2023-04-01 23:38:56,306 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:38:56,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2492 backedges. 682 proven. 138 refuted. 0 times theorem prover too weak. 1672 trivial. 0 not checked. [2023-04-01 23:38:56,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487369160] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:38:56,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:38:56,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:38:56,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199383741] [2023-04-01 23:38:56,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:38:56,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:38:56,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:38:56,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:38:56,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:38:56,671 INFO L87 Difference]: Start difference. First operand 118954 states and 125707 transitions. Second operand has 11 states, 11 states have (on average 138.1818181818182) internal successors, (1520), 9 states have internal predecessors, (1520), 4 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-04-01 23:39:02,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:39:02,606 INFO L93 Difference]: Finished difference Result 248560 states and 262722 transitions. [2023-04-01 23:39:02,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 23:39:02,607 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 138.1818181818182) internal successors, (1520), 9 states have internal predecessors, (1520), 4 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 1733 [2023-04-01 23:39:02,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:39:02,890 INFO L225 Difference]: With dead ends: 248560 [2023-04-01 23:39:02,890 INFO L226 Difference]: Without dead ends: 122536 [2023-04-01 23:39:03,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3522 GetRequests, 3497 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2023-04-01 23:39:03,095 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 4213 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 9305 mSolverCounterSat, 679 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4218 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 9984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 679 IncrementalHoareTripleChecker+Valid, 9305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:39:03,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4218 Valid, 232 Invalid, 9984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [679 Valid, 9305 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-04-01 23:39:03,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122536 states. [2023-04-01 23:39:04,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122536 to 115396. [2023-04-01 23:39:04,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115396 states, 113739 states have (on average 1.0181204336243506) internal successors, (115800), 114118 states have internal predecessors, (115800), 488 states have call successors, (488), 488 states have call predecessors, (488), 1168 states have return successors, (4010), 789 states have call predecessors, (4010), 487 states have call successors, (4010) [2023-04-01 23:39:04,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115396 states to 115396 states and 120298 transitions. [2023-04-01 23:39:04,708 INFO L78 Accepts]: Start accepts. Automaton has 115396 states and 120298 transitions. Word has length 1733 [2023-04-01 23:39:04,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:39:04,709 INFO L495 AbstractCegarLoop]: Abstraction has 115396 states and 120298 transitions. [2023-04-01 23:39:04,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 138.1818181818182) internal successors, (1520), 9 states have internal predecessors, (1520), 4 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-04-01 23:39:04,709 INFO L276 IsEmpty]: Start isEmpty. Operand 115396 states and 120298 transitions. [2023-04-01 23:39:04,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1753 [2023-04-01 23:39:04,774 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:39:04,796 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:39:04,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-04-01 23:39:05,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-04-01 23:39:05,003 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:39:05,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:39:05,003 INFO L85 PathProgramCache]: Analyzing trace with hash -261094734, now seen corresponding path program 1 times [2023-04-01 23:39:05,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:39:05,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141218863] [2023-04-01 23:39:05,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:05,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:39:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:08,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:39:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:08,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:39:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:08,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:39:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:08,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:39:08,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:08,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:39:08,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:08,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:39:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:08,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:39:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:08,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2023-04-01 23:39:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:08,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1054 [2023-04-01 23:39:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:08,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1160 [2023-04-01 23:39:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:08,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:39:08,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:08,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:39:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:08,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2603 backedges. 558 proven. 279 refuted. 0 times theorem prover too weak. 1766 trivial. 0 not checked. [2023-04-01 23:39:08,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:39:08,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141218863] [2023-04-01 23:39:08,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141218863] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:39:08,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085949229] [2023-04-01 23:39:08,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:08,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:39:08,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:39:08,730 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:39:08,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-04-01 23:39:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:09,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 2218 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-01 23:39:09,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:39:09,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2603 backedges. 1346 proven. 40 refuted. 0 times theorem prover too weak. 1217 trivial. 0 not checked. [2023-04-01 23:39:09,756 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:39:11,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2603 backedges. 1346 proven. 40 refuted. 0 times theorem prover too weak. 1217 trivial. 0 not checked. [2023-04-01 23:39:11,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085949229] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:39:11,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:39:11,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 7] total 21 [2023-04-01 23:39:11,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303264647] [2023-04-01 23:39:11,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:39:11,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-01 23:39:11,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:39:11,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-01 23:39:11,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2023-04-01 23:39:11,553 INFO L87 Difference]: Start difference. First operand 115396 states and 120298 transitions. Second operand has 21 states, 21 states have (on average 91.19047619047619) internal successors, (1915), 19 states have internal predecessors, (1915), 11 states have call successors, (23), 10 states have call predecessors, (23), 9 states have return successors, (20), 11 states have call predecessors, (20), 9 states have call successors, (20) [2023-04-01 23:39:50,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:39:50,709 INFO L93 Difference]: Finished difference Result 246343 states and 257042 transitions. [2023-04-01 23:39:50,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2023-04-01 23:39:50,710 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 91.19047619047619) internal successors, (1915), 19 states have internal predecessors, (1915), 11 states have call successors, (23), 10 states have call predecessors, (23), 9 states have return successors, (20), 11 states have call predecessors, (20), 9 states have call successors, (20) Word has length 1752 [2023-04-01 23:39:50,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:39:51,097 INFO L225 Difference]: With dead ends: 246343 [2023-04-01 23:39:51,097 INFO L226 Difference]: Without dead ends: 130249 [2023-04-01 23:39:51,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3778 GetRequests, 3629 SyntacticMatches, 2 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8465 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2546, Invalid=19506, Unknown=0, NotChecked=0, Total=22052 [2023-04-01 23:39:51,177 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 27265 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 78905 mSolverCounterSat, 2448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27270 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 81353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2448 IncrementalHoareTripleChecker+Valid, 78905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:39:51,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27270 Valid, 1367 Invalid, 81353 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2448 Valid, 78905 Invalid, 0 Unknown, 0 Unchecked, 33.8s Time] [2023-04-01 23:39:51,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130249 states. [2023-04-01 23:39:52,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130249 to 112671. [2023-04-01 23:39:52,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112671 states, 111002 states have (on average 1.015170897821661) internal successors, (112686), 111406 states have internal predecessors, (112686), 476 states have call successors, (476), 476 states have call predecessors, (476), 1192 states have return successors, (3405), 788 states have call predecessors, (3405), 475 states have call successors, (3405) [2023-04-01 23:39:52,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112671 states to 112671 states and 116567 transitions. [2023-04-01 23:39:52,973 INFO L78 Accepts]: Start accepts. Automaton has 112671 states and 116567 transitions. Word has length 1752 [2023-04-01 23:39:52,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:39:52,974 INFO L495 AbstractCegarLoop]: Abstraction has 112671 states and 116567 transitions. [2023-04-01 23:39:52,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 91.19047619047619) internal successors, (1915), 19 states have internal predecessors, (1915), 11 states have call successors, (23), 10 states have call predecessors, (23), 9 states have return successors, (20), 11 states have call predecessors, (20), 9 states have call successors, (20) [2023-04-01 23:39:52,974 INFO L276 IsEmpty]: Start isEmpty. Operand 112671 states and 116567 transitions. [2023-04-01 23:39:53,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1954 [2023-04-01 23:39:53,063 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:39:53,070 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:39:53,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-04-01 23:39:53,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:39:53,277 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:39:53,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:39:53,278 INFO L85 PathProgramCache]: Analyzing trace with hash -319148961, now seen corresponding path program 1 times [2023-04-01 23:39:53,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:39:53,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183022894] [2023-04-01 23:39:53,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:53,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:39:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:55,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:39:55,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:55,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:39:55,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:55,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:39:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:56,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:39:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:56,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:39:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:56,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:39:56,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:56,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:39:56,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:56,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2023-04-01 23:39:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:56,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1040 [2023-04-01 23:39:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:56,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:39:56,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:56,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1361 [2023-04-01 23:39:56,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:56,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:39:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:56,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:39:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:56,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3194 backedges. 1560 proven. 69 refuted. 0 times theorem prover too weak. 1565 trivial. 0 not checked. [2023-04-01 23:39:56,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:39:56,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183022894] [2023-04-01 23:39:56,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183022894] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:39:56,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049494852] [2023-04-01 23:39:56,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:56,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:39:56,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:39:56,735 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:39:56,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-04-01 23:39:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:57,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 2447 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 23:39:57,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:39:57,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3194 backedges. 1588 proven. 5 refuted. 0 times theorem prover too weak. 1601 trivial. 0 not checked. [2023-04-01 23:39:57,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:39:59,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3194 backedges. 1588 proven. 5 refuted. 0 times theorem prover too weak. 1601 trivial. 0 not checked. [2023-04-01 23:39:59,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049494852] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:39:59,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:39:59,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 14 [2023-04-01 23:39:59,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306315640] [2023-04-01 23:39:59,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:39:59,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 23:39:59,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:39:59,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 23:39:59,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:39:59,025 INFO L87 Difference]: Start difference. First operand 112671 states and 116567 transitions. Second operand has 14 states, 14 states have (on average 159.64285714285714) internal successors, (2235), 12 states have internal predecessors, (2235), 10 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2023-04-01 23:40:05,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:05,210 INFO L93 Difference]: Finished difference Result 225345 states and 233162 transitions. [2023-04-01 23:40:05,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-01 23:40:05,211 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 159.64285714285714) internal successors, (2235), 12 states have internal predecessors, (2235), 10 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) Word has length 1953 [2023-04-01 23:40:05,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:05,610 INFO L225 Difference]: With dead ends: 225345 [2023-04-01 23:40:05,610 INFO L226 Difference]: Without dead ends: 110560 [2023-04-01 23:40:05,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3980 GetRequests, 3948 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=205, Invalid=665, Unknown=0, NotChecked=0, Total=870 [2023-04-01 23:40:05,691 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 8389 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 13729 mSolverCounterSat, 883 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8389 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 14612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 883 IncrementalHoareTripleChecker+Valid, 13729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:05,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8389 Valid, 256 Invalid, 14612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [883 Valid, 13729 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-04-01 23:40:05,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110560 states. [2023-04-01 23:40:06,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110560 to 107733. [2023-04-01 23:40:07,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107733 states, 106115 states have (on average 1.0129576402959053) internal successors, (107490), 106516 states have internal predecessors, (107490), 455 states have call successors, (455), 455 states have call predecessors, (455), 1162 states have return successors, (2860), 761 states have call predecessors, (2860), 454 states have call successors, (2860) [2023-04-01 23:40:07,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107733 states to 107733 states and 110805 transitions. [2023-04-01 23:40:07,148 INFO L78 Accepts]: Start accepts. Automaton has 107733 states and 110805 transitions. Word has length 1953 [2023-04-01 23:40:07,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:07,149 INFO L495 AbstractCegarLoop]: Abstraction has 107733 states and 110805 transitions. [2023-04-01 23:40:07,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 159.64285714285714) internal successors, (2235), 12 states have internal predecessors, (2235), 10 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2023-04-01 23:40:07,150 INFO L276 IsEmpty]: Start isEmpty. Operand 107733 states and 110805 transitions. [2023-04-01 23:40:07,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2046 [2023-04-01 23:40:07,403 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:07,403 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:40:07,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-04-01 23:40:07,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-04-01 23:40:07,611 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:07,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:07,612 INFO L85 PathProgramCache]: Analyzing trace with hash 371759005, now seen corresponding path program 1 times [2023-04-01 23:40:07,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:07,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613318390] [2023-04-01 23:40:07,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:07,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:07,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:09,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:09,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:09,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:40:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:09,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:40:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:09,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:40:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:09,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:40:09,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:09,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:40:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:10,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2023-04-01 23:40:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:10,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1003 [2023-04-01 23:40:10,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:10,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1076 [2023-04-01 23:40:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:10,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1182 [2023-04-01 23:40:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:10,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1453 [2023-04-01 23:40:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:10,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:40:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:10,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:40:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:10,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4059 backedges. 784 proven. 271 refuted. 0 times theorem prover too weak. 3004 trivial. 0 not checked. [2023-04-01 23:40:10,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:10,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613318390] [2023-04-01 23:40:10,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613318390] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:40:10,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844488614] [2023-04-01 23:40:10,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:10,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:10,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:10,455 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:40:10,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-04-01 23:40:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:10,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 23:40:10,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:40:11,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4059 backedges. 1723 proven. 36 refuted. 0 times theorem prover too weak. 2300 trivial. 0 not checked. [2023-04-01 23:40:11,487 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:40:12,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4059 backedges. 1757 proven. 2 refuted. 0 times theorem prover too weak. 2300 trivial. 0 not checked. [2023-04-01 23:40:12,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844488614] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:40:12,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:40:12,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 18 [2023-04-01 23:40:12,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819743149] [2023-04-01 23:40:12,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:40:12,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-01 23:40:12,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:12,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-01 23:40:12,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2023-04-01 23:40:12,975 INFO L87 Difference]: Start difference. First operand 107733 states and 110805 transitions. Second operand has 18 states, 18 states have (on average 105.61111111111111) internal successors, (1901), 16 states have internal predecessors, (1901), 11 states have call successors, (22), 8 states have call predecessors, (22), 9 states have return successors, (21), 11 states have call predecessors, (21), 9 states have call successors, (21) [2023-04-01 23:40:29,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:29,383 INFO L93 Difference]: Finished difference Result 233794 states and 240928 transitions. [2023-04-01 23:40:29,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-04-01 23:40:29,383 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 105.61111111111111) internal successors, (1901), 16 states have internal predecessors, (1901), 11 states have call successors, (22), 8 states have call predecessors, (22), 9 states have return successors, (21), 11 states have call predecessors, (21), 9 states have call successors, (21) Word has length 2045 [2023-04-01 23:40:29,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:29,385 INFO L225 Difference]: With dead ends: 233794 [2023-04-01 23:40:29,385 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 23:40:29,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4271 GetRequests, 4180 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2845 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1288, Invalid=7084, Unknown=0, NotChecked=0, Total=8372 [2023-04-01 23:40:29,515 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 28004 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 33225 mSolverCounterSat, 1417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28004 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 34642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1417 IncrementalHoareTripleChecker+Valid, 33225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:29,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28004 Valid, 648 Invalid, 34642 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1417 Valid, 33225 Invalid, 0 Unknown, 0 Unchecked, 13.8s Time] [2023-04-01 23:40:29,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 23:40:29,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 23:40:29,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-01 23:40:29,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 23:40:29,516 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2045 [2023-04-01 23:40:29,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:29,516 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 23:40:29,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 105.61111111111111) internal successors, (1901), 16 states have internal predecessors, (1901), 11 states have call successors, (22), 8 states have call predecessors, (22), 9 states have return successors, (21), 11 states have call predecessors, (21), 9 states have call successors, (21) [2023-04-01 23:40:29,517 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 23:40:29,517 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 23:40:29,519 INFO L805 garLoopResultBuilder]: Registering result SAFE for location calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 23:40:29,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-04-01 23:40:29,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:29,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.