/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/Problem14_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-30 23:29:36,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-30 23:29:37,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-30 23:29:37,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-30 23:29:37,064 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 [2023-03-30 23:29:37,086 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-30 23:29:37,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-30 23:29:37,087 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-30 23:29:37,087 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-30 23:29:37,089 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-30 23:29:37,089 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-30 23:29:37,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-30 23:29:37,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-30 23:29:37,089 INFO L138 SettingsManager]: * Use SBE=true [2023-03-30 23:29:37,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-30 23:29:37,090 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-30 23:29:37,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-30 23:29:37,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-30 23:29:37,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-30 23:29:37,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-30 23:29:37,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-30 23:29:37,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-30 23:29:37,091 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-30 23:29:37,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-30 23:29:37,091 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-30 23:29:37,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-30 23:29:37,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-30 23:29:37,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-30 23:29:37,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-30 23:29:37,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:29:37,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-30 23:29:37,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-30 23:29:37,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-30 23:29:37,093 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-30 23:29:37,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-30 23:29:37,093 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-30 23:29:37,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-30 23:29:37,094 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-30 23:29:37,094 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-30 23:29:37,094 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-30 23:29:37,094 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-30 23:29:37,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-30 23:29:37,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-30 23:29:37,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-30 23:29:37,357 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-30 23:29:37,357 INFO L275 PluginConnector]: CDTParser initialized [2023-03-30 23:29:37,359 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem14_label50.c [2023-03-30 23:29:38,543 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-30 23:29:38,845 INFO L351 CDTParser]: Found 1 translation units. [2023-03-30 23:29:38,845 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label50.c [2023-03-30 23:29:38,854 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8c79c232/bbc2910487be4d2a8d4695d2bbcea36e/FLAGf6035673d [2023-03-30 23:29:38,866 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8c79c232/bbc2910487be4d2a8d4695d2bbcea36e [2023-03-30 23:29:38,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-30 23:29:38,870 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-30 23:29:38,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-30 23:29:38,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-30 23:29:38,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-30 23:29:38,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:29:38" (1/1) ... [2023-03-30 23:29:38,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e9c333b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:38, skipping insertion in model container [2023-03-30 23:29:38,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:29:38" (1/1) ... [2023-03-30 23:29:38,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-30 23:29:38,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-30 23:29:39,068 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/Problem14_label50.c[3933,3946] [2023-03-30 23:29:39,261 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:29:39,277 INFO L203 MainTranslator]: Completed pre-run [2023-03-30 23:29:39,307 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/Problem14_label50.c[3933,3946] [2023-03-30 23:29:39,413 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:29:39,435 INFO L208 MainTranslator]: Completed translation [2023-03-30 23:29:39,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:39 WrapperNode [2023-03-30 23:29:39,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-30 23:29:39,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-30 23:29:39,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-30 23:29:39,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-30 23:29:39,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:39" (1/1) ... [2023-03-30 23:29:39,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:39" (1/1) ... [2023-03-30 23:29:39,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:39" (1/1) ... [2023-03-30 23:29:39,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:39" (1/1) ... [2023-03-30 23:29:39,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:39" (1/1) ... [2023-03-30 23:29:39,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:39" (1/1) ... [2023-03-30 23:29:39,550 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:39" (1/1) ... [2023-03-30 23:29:39,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:39" (1/1) ... [2023-03-30 23:29:39,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-30 23:29:39,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-30 23:29:39,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-30 23:29:39,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-30 23:29:39,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:39" (1/1) ... [2023-03-30 23:29:39,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:29:39,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:29:39,590 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) [2023-03-30 23:29:39,598 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 [2023-03-30 23:29:39,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-30 23:29:39,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-30 23:29:39,645 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-30 23:29:39,645 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-03-30 23:29:39,645 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-30 23:29:39,645 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-03-30 23:29:39,645 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-30 23:29:39,645 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-30 23:29:39,645 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-30 23:29:39,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-30 23:29:39,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-30 23:29:39,646 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-30 23:29:39,646 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-30 23:29:39,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-30 23:29:39,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-30 23:29:39,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-30 23:29:39,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-30 23:29:39,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-30 23:29:39,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-30 23:29:39,730 INFO L236 CfgBuilder]: Building ICFG [2023-03-30 23:29:39,732 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-30 23:29:40,841 INFO L277 CfgBuilder]: Performing block encoding [2023-03-30 23:29:40,849 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-30 23:29:40,849 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-30 23:29:40,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:29:40 BoogieIcfgContainer [2023-03-30 23:29:40,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-30 23:29:40,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-30 23:29:40,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-30 23:29:40,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-30 23:29:40,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 11:29:38" (1/3) ... [2023-03-30 23:29:40,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d692de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:29:40, skipping insertion in model container [2023-03-30 23:29:40,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:39" (2/3) ... [2023-03-30 23:29:40,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d692de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:29:40, skipping insertion in model container [2023-03-30 23:29:40,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:29:40" (3/3) ... [2023-03-30 23:29:40,862 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label50.c [2023-03-30 23:29:40,876 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-30 23:29:40,876 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-30 23:29:40,934 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-30 23:29:40,942 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;@58a54e35, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-30 23:29:40,943 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-30 23:29:40,948 INFO L276 IsEmpty]: Start isEmpty. Operand has 254 states, 246 states have (on average 1.7276422764227641) internal successors, (425), 247 states have internal predecessors, (425), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-30 23:29:40,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-03-30 23:29:40,956 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:29:40,957 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] [2023-03-30 23:29:40,957 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:29:40,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:29:40,965 INFO L85 PathProgramCache]: Analyzing trace with hash 461525754, now seen corresponding path program 1 times [2023-03-30 23:29:40,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:29:40,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896638452] [2023-03-30 23:29:40,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:40,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:29:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:41,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:29:41,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:41,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:29:41,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:29:41,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896638452] [2023-03-30 23:29:41,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896638452] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:29:41,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:29:41,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-30 23:29:41,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204103591] [2023-03-30 23:29:41,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:29:41,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:29:41,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:29:41,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:29:41,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:29:41,520 INFO L87 Difference]: Start difference. First operand has 254 states, 246 states have (on average 1.7276422764227641) internal successors, (425), 247 states have internal predecessors, (425), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 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) [2023-03-30 23:29:43,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:29:43,325 INFO L93 Difference]: Finished difference Result 886 states and 1613 transitions. [2023-03-30 23:29:43,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-30 23:29:43,328 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 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 43 [2023-03-30 23:29:43,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:29:43,341 INFO L225 Difference]: With dead ends: 886 [2023-03-30 23:29:43,341 INFO L226 Difference]: Without dead ends: 564 [2023-03-30 23:29:43,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:29:43,351 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 1245 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1245 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:29:43,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1245 Valid, 31 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [454 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-03-30 23:29:43,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2023-03-30 23:29:43,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 558. [2023-03-30 23:29:43,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 546 states have (on average 1.6282051282051282) internal successors, (889), 548 states have internal predecessors, (889), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-03-30 23:29:43,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 906 transitions. [2023-03-30 23:29:43,423 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 906 transitions. Word has length 43 [2023-03-30 23:29:43,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:29:43,424 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 906 transitions. [2023-03-30 23:29:43,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 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) [2023-03-30 23:29:43,424 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 906 transitions. [2023-03-30 23:29:43,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-03-30 23:29:43,429 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:29:43,429 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:29:43,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-30 23:29:43,430 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:29:43,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:29:43,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1323772498, now seen corresponding path program 1 times [2023-03-30 23:29:43,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:29:43,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219950573] [2023-03-30 23:29:43,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:43,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:29:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:43,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:29:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:43,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:29:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:43,867 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:29:43,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:29:43,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219950573] [2023-03-30 23:29:43,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219950573] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:29:43,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:29:43,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-30 23:29:43,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110283501] [2023-03-30 23:29:43,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:29:43,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-30 23:29:43,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:29:43,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-30 23:29:43,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:29:43,872 INFO L87 Difference]: Start difference. First operand 558 states and 906 transitions. Second operand has 7 states, 6 states have (on average 20.5) internal successors, (123), 4 states have internal predecessors, (123), 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) [2023-03-30 23:29:45,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:29:45,044 INFO L93 Difference]: Finished difference Result 1698 states and 2816 transitions. [2023-03-30 23:29:45,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-30 23:29:45,044 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.5) internal successors, (123), 4 states have internal predecessors, (123), 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 129 [2023-03-30 23:29:45,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:29:45,051 INFO L225 Difference]: With dead ends: 1698 [2023-03-30 23:29:45,051 INFO L226 Difference]: Without dead ends: 1146 [2023-03-30 23:29:45,053 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 [2023-03-30 23:29:45,054 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 816 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-30 23:29:45,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 38 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-30 23:29:45,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2023-03-30 23:29:45,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 566. [2023-03-30 23:29:45,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 550 states have (on average 1.481818181818182) internal successors, (815), 556 states have internal predecessors, (815), 5 states have call successors, (5), 5 states have call predecessors, (5), 10 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2023-03-30 23:29:45,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 839 transitions. [2023-03-30 23:29:45,094 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 839 transitions. Word has length 129 [2023-03-30 23:29:45,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:29:45,094 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 839 transitions. [2023-03-30 23:29:45,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.5) internal successors, (123), 4 states have internal predecessors, (123), 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) [2023-03-30 23:29:45,095 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 839 transitions. [2023-03-30 23:29:45,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-03-30 23:29:45,098 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:29:45,098 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:29:45,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-30 23:29:45,099 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:29:45,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:29:45,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1184548359, now seen corresponding path program 1 times [2023-03-30 23:29:45,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:29:45,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382924783] [2023-03-30 23:29:45,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:45,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:29:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:45,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:29:45,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:45,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:29:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:45,338 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:29:45,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:29:45,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382924783] [2023-03-30 23:29:45,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382924783] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:29:45,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2624106] [2023-03-30 23:29:45,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:45,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:45,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:29:45,347 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) [2023-03-30 23:29:45,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-30 23:29:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:45,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:29:45,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:29:45,571 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:29:45,571 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:29:45,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2624106] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:29:45,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:29:45,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 23:29:45,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545973458] [2023-03-30 23:29:45,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:29:45,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:29:45,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:29:45,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:29:45,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:29:45,574 INFO L87 Difference]: Start difference. First operand 566 states and 839 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-30 23:29:46,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:29:46,213 INFO L93 Difference]: Finished difference Result 1682 states and 2536 transitions. [2023-03-30 23:29:46,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:29:46,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 138 [2023-03-30 23:29:46,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:29:46,219 INFO L225 Difference]: With dead ends: 1682 [2023-03-30 23:29:46,219 INFO L226 Difference]: Without dead ends: 1122 [2023-03-30 23:29:46,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:29:46,229 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 144 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:29:46,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 323 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-30 23:29:46,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2023-03-30 23:29:46,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 936. [2023-03-30 23:29:46,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 913 states have (on average 1.362541073384447) internal successors, (1244), 922 states have internal predecessors, (1244), 7 states have call successors, (7), 7 states have call predecessors, (7), 15 states have return successors, (41), 6 states have call predecessors, (41), 6 states have call successors, (41) [2023-03-30 23:29:46,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1292 transitions. [2023-03-30 23:29:46,272 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1292 transitions. Word has length 138 [2023-03-30 23:29:46,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:29:46,273 INFO L495 AbstractCegarLoop]: Abstraction has 936 states and 1292 transitions. [2023-03-30 23:29:46,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-30 23:29:46,273 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1292 transitions. [2023-03-30 23:29:46,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-03-30 23:29:46,285 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:29:46,286 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-03-30 23:29:46,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-30 23:29:46,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:46,492 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:29:46,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:29:46,492 INFO L85 PathProgramCache]: Analyzing trace with hash 763125831, now seen corresponding path program 1 times [2023-03-30 23:29:46,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:29:46,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095660485] [2023-03-30 23:29:46,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:46,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:29:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:46,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:29:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:46,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:29:46,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:46,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-03-30 23:29:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:47,023 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-30 23:29:47,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:29:47,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095660485] [2023-03-30 23:29:47,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095660485] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:29:47,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322217450] [2023-03-30 23:29:47,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:47,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:47,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:29:47,025 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) [2023-03-30 23:29:47,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-30 23:29:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:47,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:29:47,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:29:47,280 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:29:47,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:29:47,559 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:29:47,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322217450] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:29:47,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:29:47,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-03-30 23:29:47,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536071175] [2023-03-30 23:29:47,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:29:47,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-30 23:29:47,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:29:47,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-30 23:29:47,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:29:47,568 INFO L87 Difference]: Start difference. First operand 936 states and 1292 transitions. Second operand has 12 states, 12 states have (on average 31.416666666666668) internal successors, (377), 10 states have internal predecessors, (377), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-30 23:29:49,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:29:49,904 INFO L93 Difference]: Finished difference Result 3212 states and 4627 transitions. [2023-03-30 23:29:49,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-03-30 23:29:49,906 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 31.416666666666668) internal successors, (377), 10 states have internal predecessors, (377), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 212 [2023-03-30 23:29:49,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:29:49,947 INFO L225 Difference]: With dead ends: 3212 [2023-03-30 23:29:49,947 INFO L226 Difference]: Without dead ends: 2098 [2023-03-30 23:29:49,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 429 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2023-03-30 23:29:49,951 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1310 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 740 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1310 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 740 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-03-30 23:29:49,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1310 Valid, 118 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [740 Valid, 2468 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-03-30 23:29:49,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2098 states. [2023-03-30 23:29:50,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2098 to 1502. [2023-03-30 23:29:50,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1463 states have (on average 1.2453861927546137) internal successors, (1822), 1482 states have internal predecessors, (1822), 10 states have call successors, (10), 10 states have call predecessors, (10), 28 states have return successors, (79), 9 states have call predecessors, (79), 9 states have call successors, (79) [2023-03-30 23:29:50,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 1911 transitions. [2023-03-30 23:29:50,009 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 1911 transitions. Word has length 212 [2023-03-30 23:29:50,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:29:50,010 INFO L495 AbstractCegarLoop]: Abstraction has 1502 states and 1911 transitions. [2023-03-30 23:29:50,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 31.416666666666668) internal successors, (377), 10 states have internal predecessors, (377), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-30 23:29:50,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 1911 transitions. [2023-03-30 23:29:50,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-03-30 23:29:50,025 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:29:50,025 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-03-30 23:29:50,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-03-30 23:29:50,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-03-30 23:29:50,231 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:29:50,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:29:50,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1712160514, now seen corresponding path program 1 times [2023-03-30 23:29:50,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:29:50,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60408521] [2023-03-30 23:29:50,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:50,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:29:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:50,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:29:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:50,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:29:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:50,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-03-30 23:29:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:50,570 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-03-30 23:29:50,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:29:50,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60408521] [2023-03-30 23:29:50,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60408521] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:29:50,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098157614] [2023-03-30 23:29:50,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:50,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:50,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:29:50,575 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) [2023-03-30 23:29:50,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-30 23:29:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:50,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:29:50,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:29:50,734 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-03-30 23:29:50,734 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:29:50,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098157614] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:29:50,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:29:50,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 23:29:50,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580544502] [2023-03-30 23:29:50,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:29:50,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:29:50,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:29:50,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:29:50,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:29:50,737 INFO L87 Difference]: Start difference. First operand 1502 states and 1911 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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) [2023-03-30 23:29:51,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:29:51,360 INFO L93 Difference]: Finished difference Result 3916 states and 5081 transitions. [2023-03-30 23:29:51,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:29:51,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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 241 [2023-03-30 23:29:51,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:29:51,370 INFO L225 Difference]: With dead ends: 3916 [2023-03-30 23:29:51,370 INFO L226 Difference]: Without dead ends: 2420 [2023-03-30 23:29:51,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:29:51,374 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 144 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:29:51,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 325 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-30 23:29:51,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2023-03-30 23:29:51,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 2054. [2023-03-30 23:29:51,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2054 states, 2006 states have (on average 1.2253240279162512) internal successors, (2458), 2028 states have internal predecessors, (2458), 13 states have call successors, (13), 13 states have call predecessors, (13), 34 states have return successors, (120), 12 states have call predecessors, (120), 12 states have call successors, (120) [2023-03-30 23:29:51,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 2591 transitions. [2023-03-30 23:29:51,431 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 2591 transitions. Word has length 241 [2023-03-30 23:29:51,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:29:51,431 INFO L495 AbstractCegarLoop]: Abstraction has 2054 states and 2591 transitions. [2023-03-30 23:29:51,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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) [2023-03-30 23:29:51,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 2591 transitions. [2023-03-30 23:29:51,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-03-30 23:29:51,436 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:29:51,436 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-03-30 23:29:51,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-30 23:29:51,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:51,642 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:29:51,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:29:51,642 INFO L85 PathProgramCache]: Analyzing trace with hash 307999567, now seen corresponding path program 1 times [2023-03-30 23:29:51,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:29:51,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856025057] [2023-03-30 23:29:51,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:51,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:29:51,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:52,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:29:52,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:52,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:29:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:52,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-03-30 23:29:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:52,233 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 76 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-03-30 23:29:52,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:29:52,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856025057] [2023-03-30 23:29:52,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856025057] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:29:52,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304009959] [2023-03-30 23:29:52,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:52,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:52,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:29:52,235 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) [2023-03-30 23:29:52,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-30 23:29:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:52,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:29:52,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:29:52,406 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-03-30 23:29:52,407 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:29:52,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304009959] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:29:52,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:29:52,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-03-30 23:29:52,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996233225] [2023-03-30 23:29:52,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:29:52,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:29:52,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:29:52,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:29:52,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-03-30 23:29:52,409 INFO L87 Difference]: Start difference. First operand 2054 states and 2591 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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) [2023-03-30 23:29:53,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:29:53,113 INFO L93 Difference]: Finished difference Result 4476 states and 5840 transitions. [2023-03-30 23:29:53,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:29:53,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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 260 [2023-03-30 23:29:53,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:29:53,125 INFO L225 Difference]: With dead ends: 4476 [2023-03-30 23:29:53,125 INFO L226 Difference]: Without dead ends: 2794 [2023-03-30 23:29:53,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-03-30 23:29:53,130 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 147 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:29:53,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 278 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-30 23:29:53,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2794 states. [2023-03-30 23:29:53,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2794 to 2426. [2023-03-30 23:29:53,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2426 states, 2370 states have (on average 1.2607594936708861) internal successors, (2988), 2396 states have internal predecessors, (2988), 15 states have call successors, (15), 15 states have call predecessors, (15), 40 states have return successors, (184), 14 states have call predecessors, (184), 14 states have call successors, (184) [2023-03-30 23:29:53,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2426 states to 2426 states and 3187 transitions. [2023-03-30 23:29:53,206 INFO L78 Accepts]: Start accepts. Automaton has 2426 states and 3187 transitions. Word has length 260 [2023-03-30 23:29:53,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:29:53,206 INFO L495 AbstractCegarLoop]: Abstraction has 2426 states and 3187 transitions. [2023-03-30 23:29:53,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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) [2023-03-30 23:29:53,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2426 states and 3187 transitions. [2023-03-30 23:29:53,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2023-03-30 23:29:53,212 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:29:53,212 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-03-30 23:29:53,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-03-30 23:29:53,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:53,418 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:29:53,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:29:53,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1542615947, now seen corresponding path program 1 times [2023-03-30 23:29:53,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:29:53,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730613640] [2023-03-30 23:29:53,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:53,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:29:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:54,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:29:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:54,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:29:54,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:54,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-03-30 23:29:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:55,070 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 161 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-30 23:29:55,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:29:55,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730613640] [2023-03-30 23:29:55,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730613640] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:29:55,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803098720] [2023-03-30 23:29:55,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:55,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:55,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:29:55,073 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) [2023-03-30 23:29:55,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-03-30 23:29:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:55,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 11 conjunts are in the unsatisfiable core [2023-03-30 23:29:55,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:29:55,675 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-03-30 23:29:55,675 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:29:55,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803098720] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:29:55,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:29:55,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-03-30 23:29:55,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526157143] [2023-03-30 23:29:55,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:29:55,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:29:55,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:29:55,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:29:55,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-03-30 23:29:55,680 INFO L87 Difference]: Start difference. First operand 2426 states and 3187 transitions. Second operand has 5 states, 5 states have (on average 46.2) internal successors, (231), 4 states have internal predecessors, (231), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-30 23:29:56,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:29:56,466 INFO L93 Difference]: Finished difference Result 4492 states and 5970 transitions. [2023-03-30 23:29:56,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-30 23:29:56,469 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 46.2) internal successors, (231), 4 states have internal predecessors, (231), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 274 [2023-03-30 23:29:56,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:29:56,483 INFO L225 Difference]: With dead ends: 4492 [2023-03-30 23:29:56,483 INFO L226 Difference]: Without dead ends: 2438 [2023-03-30 23:29:56,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-03-30 23:29:56,488 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 340 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-03-30 23:29:56,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 54 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-03-30 23:29:56,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2438 states. [2023-03-30 23:29:56,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2438 to 2434. [2023-03-30 23:29:56,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2434 states, 2374 states have (on average 1.2561078348778434) internal successors, (2982), 2404 states have internal predecessors, (2982), 15 states have call successors, (15), 15 states have call predecessors, (15), 44 states have return successors, (186), 14 states have call predecessors, (186), 14 states have call successors, (186) [2023-03-30 23:29:56,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2434 states to 2434 states and 3183 transitions. [2023-03-30 23:29:56,557 INFO L78 Accepts]: Start accepts. Automaton has 2434 states and 3183 transitions. Word has length 274 [2023-03-30 23:29:56,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:29:56,557 INFO L495 AbstractCegarLoop]: Abstraction has 2434 states and 3183 transitions. [2023-03-30 23:29:56,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.2) internal successors, (231), 4 states have internal predecessors, (231), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-30 23:29:56,558 INFO L276 IsEmpty]: Start isEmpty. Operand 2434 states and 3183 transitions. [2023-03-30 23:29:56,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2023-03-30 23:29:56,564 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:29:56,565 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:29:56,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-03-30 23:29:56,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:56,770 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:29:56,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:29:56,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1952269354, now seen corresponding path program 1 times [2023-03-30 23:29:56,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:29:56,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444430794] [2023-03-30 23:29:56,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:56,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:29:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:57,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:29:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:57,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:29:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:57,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-03-30 23:29:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:57,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-03-30 23:29:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:57,784 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 182 proven. 111 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-03-30 23:29:57,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:29:57,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444430794] [2023-03-30 23:29:57,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444430794] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:29:57,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920250725] [2023-03-30 23:29:57,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:57,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:57,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:29:57,786 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) [2023-03-30 23:29:57,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-03-30 23:29:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:57,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 11 conjunts are in the unsatisfiable core [2023-03-30 23:29:57,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:29:58,224 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-03-30 23:29:58,225 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:29:58,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920250725] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:29:58,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:29:58,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-03-30 23:29:58,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21979241] [2023-03-30 23:29:58,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:29:58,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:29:58,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:29:58,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:29:58,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-03-30 23:29:58,227 INFO L87 Difference]: Start difference. First operand 2434 states and 3183 transitions. Second operand has 5 states, 5 states have (on average 38.6) internal successors, (193), 4 states have internal predecessors, (193), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-30 23:29:59,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:29:59,073 INFO L93 Difference]: Finished difference Result 4700 states and 6201 transitions. [2023-03-30 23:29:59,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-30 23:29:59,073 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 4 states have internal predecessors, (193), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 347 [2023-03-30 23:29:59,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:29:59,083 INFO L225 Difference]: With dead ends: 4700 [2023-03-30 23:29:59,083 INFO L226 Difference]: Without dead ends: 2638 [2023-03-30 23:29:59,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-03-30 23:29:59,088 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 423 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-03-30 23:29:59,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 54 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-03-30 23:29:59,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2638 states. [2023-03-30 23:29:59,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2638 to 2254. [2023-03-30 23:29:59,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2254 states, 2195 states have (on average 1.2665148063781322) internal successors, (2780), 2226 states have internal predecessors, (2780), 14 states have call successors, (14), 14 states have call predecessors, (14), 44 states have return successors, (172), 13 states have call predecessors, (172), 13 states have call successors, (172) [2023-03-30 23:29:59,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2254 states to 2254 states and 2966 transitions. [2023-03-30 23:29:59,151 INFO L78 Accepts]: Start accepts. Automaton has 2254 states and 2966 transitions. Word has length 347 [2023-03-30 23:29:59,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:29:59,151 INFO L495 AbstractCegarLoop]: Abstraction has 2254 states and 2966 transitions. [2023-03-30 23:29:59,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 4 states have internal predecessors, (193), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-30 23:29:59,152 INFO L276 IsEmpty]: Start isEmpty. Operand 2254 states and 2966 transitions. [2023-03-30 23:29:59,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2023-03-30 23:29:59,158 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:29:59,158 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:29:59,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-03-30 23:29:59,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:59,365 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:29:59,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:29:59,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1170546089, now seen corresponding path program 1 times [2023-03-30 23:29:59,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:29:59,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306519801] [2023-03-30 23:29:59,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:59,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:29:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:59,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:29:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:59,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:29:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:00,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-03-30 23:30:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:00,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-03-30 23:30:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:00,423 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 142 proven. 239 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-03-30 23:30:00,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:30:00,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306519801] [2023-03-30 23:30:00,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306519801] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:30:00,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249567781] [2023-03-30 23:30:00,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:30:00,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:30:00,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:30:00,425 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) [2023-03-30 23:30:00,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-03-30 23:30:00,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:00,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 15 conjunts are in the unsatisfiable core [2023-03-30 23:30:00,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:30:01,986 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-03-30 23:30:01,987 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:30:04,707 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 113 proven. 271 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-03-30 23:30:04,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249567781] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:30:04,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:30:04,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22 [2023-03-30 23:30:04,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818415963] [2023-03-30 23:30:04,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:30:04,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-03-30 23:30:04,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:30:04,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-03-30 23:30:04,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2023-03-30 23:30:04,711 INFO L87 Difference]: Start difference. First operand 2254 states and 2966 transitions. Second operand has 22 states, 22 states have (on average 36.95454545454545) internal successors, (813), 21 states have internal predecessors, (813), 7 states have call successors, (14), 11 states have call predecessors, (14), 10 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) [2023-03-30 23:30:08,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:30:08,938 INFO L93 Difference]: Finished difference Result 6107 states and 8309 transitions. [2023-03-30 23:30:08,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-03-30 23:30:08,939 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 36.95454545454545) internal successors, (813), 21 states have internal predecessors, (813), 7 states have call successors, (14), 11 states have call predecessors, (14), 10 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) Word has length 358 [2023-03-30 23:30:08,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:30:08,969 INFO L225 Difference]: With dead ends: 6107 [2023-03-30 23:30:08,970 INFO L226 Difference]: Without dead ends: 3788 [2023-03-30 23:30:08,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 795 GetRequests, 738 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 835 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=779, Invalid=2527, Unknown=0, NotChecked=0, Total=3306 [2023-03-30 23:30:08,976 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 3157 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 3579 mSolverCounterSat, 1038 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3163 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 4617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1038 IncrementalHoareTripleChecker+Valid, 3579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-03-30 23:30:08,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3163 Valid, 132 Invalid, 4617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1038 Valid, 3579 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-03-30 23:30:08,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3788 states. [2023-03-30 23:30:09,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3788 to 3532. [2023-03-30 23:30:09,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3532 states, 3457 states have (on average 1.0783916690772346) internal successors, (3728), 3490 states have internal predecessors, (3728), 21 states have call successors, (21), 21 states have call predecessors, (21), 53 states have return successors, (215), 20 states have call predecessors, (215), 20 states have call successors, (215) [2023-03-30 23:30:09,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3532 states to 3532 states and 3964 transitions. [2023-03-30 23:30:09,065 INFO L78 Accepts]: Start accepts. Automaton has 3532 states and 3964 transitions. Word has length 358 [2023-03-30 23:30:09,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:30:09,066 INFO L495 AbstractCegarLoop]: Abstraction has 3532 states and 3964 transitions. [2023-03-30 23:30:09,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 36.95454545454545) internal successors, (813), 21 states have internal predecessors, (813), 7 states have call successors, (14), 11 states have call predecessors, (14), 10 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) [2023-03-30 23:30:09,066 INFO L276 IsEmpty]: Start isEmpty. Operand 3532 states and 3964 transitions. [2023-03-30 23:30:09,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2023-03-30 23:30:09,075 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:30:09,075 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:30:09,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-03-30 23:30:09,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:30:09,282 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:30:09,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:30:09,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1608094210, now seen corresponding path program 1 times [2023-03-30 23:30:09,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:30:09,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030639369] [2023-03-30 23:30:09,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:30:09,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:30:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:09,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:30:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:09,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:30:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:09,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-03-30 23:30:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:09,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-03-30 23:30:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:09,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2023-03-30 23:30:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:09,661 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 225 proven. 148 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2023-03-30 23:30:09,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:30:09,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030639369] [2023-03-30 23:30:09,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030639369] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:30:09,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837603644] [2023-03-30 23:30:09,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:30:09,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:30:09,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:30:09,663 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) [2023-03-30 23:30:09,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-03-30 23:30:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:09,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:30:09,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:30:09,945 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 514 proven. 2 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-03-30 23:30:09,946 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:30:10,188 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 226 proven. 150 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2023-03-30 23:30:10,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837603644] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:30:10,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:30:10,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-03-30 23:30:10,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646327171] [2023-03-30 23:30:10,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:30:10,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-30 23:30:10,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:30:10,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-30 23:30:10,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:30:10,194 INFO L87 Difference]: Start difference. First operand 3532 states and 3964 transitions. Second operand has 12 states, 12 states have (on average 39.083333333333336) internal successors, (469), 10 states have internal predecessors, (469), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-03-30 23:30:11,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:30:11,585 INFO L93 Difference]: Finished difference Result 7444 states and 8455 transitions. [2023-03-30 23:30:11,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-03-30 23:30:11,586 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 39.083333333333336) internal successors, (469), 10 states have internal predecessors, (469), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 459 [2023-03-30 23:30:11,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:30:11,599 INFO L225 Difference]: With dead ends: 7444 [2023-03-30 23:30:11,599 INFO L226 Difference]: Without dead ends: 4284 [2023-03-30 23:30:11,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 960 GetRequests, 935 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2023-03-30 23:30:11,606 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 1352 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1558 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1352 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 1734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-30 23:30:11,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1352 Valid, 59 Invalid, 1734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1558 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-30 23:30:11,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4284 states. [2023-03-30 23:30:11,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4284 to 4282. [2023-03-30 23:30:11,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4282 states, 4188 states have (on average 1.0630372492836677) internal successors, (4452), 4232 states have internal predecessors, (4452), 25 states have call successors, (25), 25 states have call predecessors, (25), 68 states have return successors, (242), 24 states have call predecessors, (242), 24 states have call successors, (242) [2023-03-30 23:30:11,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4282 states to 4282 states and 4719 transitions. [2023-03-30 23:30:11,704 INFO L78 Accepts]: Start accepts. Automaton has 4282 states and 4719 transitions. Word has length 459 [2023-03-30 23:30:11,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:30:11,705 INFO L495 AbstractCegarLoop]: Abstraction has 4282 states and 4719 transitions. [2023-03-30 23:30:11,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 39.083333333333336) internal successors, (469), 10 states have internal predecessors, (469), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-03-30 23:30:11,705 INFO L276 IsEmpty]: Start isEmpty. Operand 4282 states and 4719 transitions. [2023-03-30 23:30:11,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 656 [2023-03-30 23:30:11,719 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:30:11,719 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, 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, 5, 5, 5, 5, 4, 3, 3, 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] [2023-03-30 23:30:11,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-03-30 23:30:11,930 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,SelfDestructingSolverStorable9 [2023-03-30 23:30:11,930 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:30:11,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:30:11,931 INFO L85 PathProgramCache]: Analyzing trace with hash 2133336762, now seen corresponding path program 1 times [2023-03-30 23:30:11,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:30:11,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386744901] [2023-03-30 23:30:11,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:30:11,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:30:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:12,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:30:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:12,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:30:12,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:12,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-30 23:30:12,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:13,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-03-30 23:30:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:13,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2023-03-30 23:30:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:13,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2023-03-30 23:30:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:13,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 339 proven. 565 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-03-30 23:30:13,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:30:13,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386744901] [2023-03-30 23:30:13,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386744901] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:30:13,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004103721] [2023-03-30 23:30:13,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:30:13,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:30:13,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:30:13,279 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) [2023-03-30 23:30:13,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-03-30 23:30:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:13,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 7 conjunts are in the unsatisfiable core [2023-03-30 23:30:13,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:30:13,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 928 proven. 2 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2023-03-30 23:30:13,607 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:30:14,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 527 proven. 112 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2023-03-30 23:30:14,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004103721] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:30:14,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:30:14,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 12 [2023-03-30 23:30:14,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252985169] [2023-03-30 23:30:14,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:30:14,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-30 23:30:14,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:30:14,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-30 23:30:14,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:30:14,345 INFO L87 Difference]: Start difference. First operand 4282 states and 4719 transitions. Second operand has 12 states, 12 states have (on average 51.916666666666664) internal successors, (623), 10 states have internal predecessors, (623), 5 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-03-30 23:30:15,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:30:15,941 INFO L93 Difference]: Finished difference Result 9504 states and 10554 transitions. [2023-03-30 23:30:15,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-30 23:30:15,942 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 51.916666666666664) internal successors, (623), 10 states have internal predecessors, (623), 5 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 655 [2023-03-30 23:30:15,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:30:15,963 INFO L225 Difference]: With dead ends: 9504 [2023-03-30 23:30:15,963 INFO L226 Difference]: Without dead ends: 5226 [2023-03-30 23:30:15,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1359 GetRequests, 1333 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=217, Invalid=539, Unknown=0, NotChecked=0, Total=756 [2023-03-30 23:30:15,970 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 2678 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2678 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-30 23:30:15,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2678 Valid, 54 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-30 23:30:15,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5226 states. [2023-03-30 23:30:16,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5226 to 4468. [2023-03-30 23:30:16,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4468 states, 4370 states have (on average 1.0556064073226545) internal successors, (4613), 4416 states have internal predecessors, (4613), 26 states have call successors, (26), 26 states have call predecessors, (26), 71 states have return successors, (231), 25 states have call predecessors, (231), 25 states have call successors, (231) [2023-03-30 23:30:16,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4468 states to 4468 states and 4870 transitions. [2023-03-30 23:30:16,088 INFO L78 Accepts]: Start accepts. Automaton has 4468 states and 4870 transitions. Word has length 655 [2023-03-30 23:30:16,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:30:16,089 INFO L495 AbstractCegarLoop]: Abstraction has 4468 states and 4870 transitions. [2023-03-30 23:30:16,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 51.916666666666664) internal successors, (623), 10 states have internal predecessors, (623), 5 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-03-30 23:30:16,090 INFO L276 IsEmpty]: Start isEmpty. Operand 4468 states and 4870 transitions. [2023-03-30 23:30:16,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2023-03-30 23:30:16,110 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:30:16,110 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 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] [2023-03-30 23:30:16,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-03-30 23:30:16,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:30:16,317 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:30:16,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:30:16,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1506947547, now seen corresponding path program 1 times [2023-03-30 23:30:16,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:30:16,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182031862] [2023-03-30 23:30:16,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:30:16,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:30:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:17,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:30:17,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:17,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:30:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:17,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-30 23:30:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:17,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-03-30 23:30:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:17,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2023-03-30 23:30:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:17,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2023-03-30 23:30:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:17,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2023-03-30 23:30:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:17,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1690 backedges. 633 proven. 123 refuted. 0 times theorem prover too weak. 934 trivial. 0 not checked. [2023-03-30 23:30:17,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:30:17,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182031862] [2023-03-30 23:30:17,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182031862] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:30:17,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694008280] [2023-03-30 23:30:17,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:30:17,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:30:17,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:30:17,750 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) [2023-03-30 23:30:17,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-03-30 23:30:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:17,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 7 conjunts are in the unsatisfiable core [2023-03-30 23:30:17,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:30:18,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1690 backedges. 1113 proven. 2 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2023-03-30 23:30:18,318 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:30:19,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1690 backedges. 643 proven. 112 refuted. 0 times theorem prover too weak. 935 trivial. 0 not checked. [2023-03-30 23:30:19,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694008280] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:30:19,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:30:19,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 16 [2023-03-30 23:30:19,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756920617] [2023-03-30 23:30:19,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:30:19,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-03-30 23:30:19,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:30:19,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-03-30 23:30:19,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-03-30 23:30:19,925 INFO L87 Difference]: Start difference. First operand 4468 states and 4870 transitions. Second operand has 16 states, 16 states have (on average 39.4375) internal successors, (631), 14 states have internal predecessors, (631), 6 states have call successors, (12), 7 states have call predecessors, (12), 8 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-03-30 23:30:23,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:30:23,260 INFO L93 Difference]: Finished difference Result 8519 states and 9373 transitions. [2023-03-30 23:30:23,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-03-30 23:30:23,261 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 39.4375) internal successors, (631), 14 states have internal predecessors, (631), 6 states have call successors, (12), 7 states have call predecessors, (12), 8 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 728 [2023-03-30 23:30:23,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:30:23,270 INFO L225 Difference]: With dead ends: 8519 [2023-03-30 23:30:23,271 INFO L226 Difference]: Without dead ends: 4175 [2023-03-30 23:30:23,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1539 GetRequests, 1485 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=685, Invalid=2285, Unknown=0, NotChecked=0, Total=2970 [2023-03-30 23:30:23,278 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 3144 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 2281 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3148 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 2507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 2281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-03-30 23:30:23,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3148 Valid, 111 Invalid, 2507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 2281 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-03-30 23:30:23,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4175 states. [2023-03-30 23:30:23,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4175 to 3728. [2023-03-30 23:30:23,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3728 states, 3644 states have (on average 1.048847420417124) internal successors, (3822), 3684 states have internal predecessors, (3822), 22 states have call successors, (22), 22 states have call predecessors, (22), 61 states have return successors, (189), 21 states have call predecessors, (189), 21 states have call successors, (189) [2023-03-30 23:30:23,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3728 states to 3728 states and 4033 transitions. [2023-03-30 23:30:23,348 INFO L78 Accepts]: Start accepts. Automaton has 3728 states and 4033 transitions. Word has length 728 [2023-03-30 23:30:23,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:30:23,349 INFO L495 AbstractCegarLoop]: Abstraction has 3728 states and 4033 transitions. [2023-03-30 23:30:23,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 39.4375) internal successors, (631), 14 states have internal predecessors, (631), 6 states have call successors, (12), 7 states have call predecessors, (12), 8 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-03-30 23:30:23,349 INFO L276 IsEmpty]: Start isEmpty. Operand 3728 states and 4033 transitions. [2023-03-30 23:30:23,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2023-03-30 23:30:23,356 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:30:23,356 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:30:23,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-03-30 23:30:23,567 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,SelfDestructingSolverStorable11 [2023-03-30 23:30:23,567 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:30:23,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:30:23,568 INFO L85 PathProgramCache]: Analyzing trace with hash -462752770, now seen corresponding path program 1 times [2023-03-30 23:30:23,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:30:23,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737951107] [2023-03-30 23:30:23,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:30:23,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:30:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:24,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:30:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:24,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:30:24,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:24,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-30 23:30:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:24,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-03-30 23:30:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:24,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2023-03-30 23:30:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:24,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2023-03-30 23:30:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:24,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2023-03-30 23:30:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:24,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1715 backedges. 749 proven. 17 refuted. 0 times theorem prover too weak. 949 trivial. 0 not checked. [2023-03-30 23:30:24,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:30:24,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737951107] [2023-03-30 23:30:24,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737951107] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:30:24,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575415407] [2023-03-30 23:30:24,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:30:24,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:30:24,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:30:24,856 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) [2023-03-30 23:30:24,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-03-30 23:30:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:25,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 1107 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:30:25,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:30:25,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1715 backedges. 1198 proven. 2 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2023-03-30 23:30:25,235 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:30:25,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1715 backedges. 472 proven. 150 refuted. 0 times theorem prover too weak. 1093 trivial. 0 not checked. [2023-03-30 23:30:25,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575415407] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:30:25,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:30:25,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 14 [2023-03-30 23:30:25,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814979573] [2023-03-30 23:30:25,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:30:25,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-03-30 23:30:25,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:30:25,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-03-30 23:30:25,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-03-30 23:30:25,492 INFO L87 Difference]: Start difference. First operand 3728 states and 4033 transitions. Second operand has 14 states, 14 states have (on average 45.42857142857143) internal successors, (636), 12 states have internal predecessors, (636), 5 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10)