/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_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-30 23:27:38,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-30 23:27:38,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-30 23:27:38,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-30 23:27:38,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-30 23:27:38,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-30 23:27:38,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-30 23:27:38,431 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 23:27:38,454 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-30 23:27:38,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-30 23:27:38,455 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-30 23:27:38,455 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-30 23:27:38,455 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-30 23:27:38,456 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-30 23:27:38,456 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-30 23:27:38,456 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-30 23:27:38,456 INFO L138 SettingsManager]: * Use SBE=true [2023-03-30 23:27:38,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-30 23:27:38,456 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-30 23:27:38,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-30 23:27:38,458 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-30 23:27:38,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-30 23:27:38,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-30 23:27:38,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-30 23:27:38,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-30 23:27:38,459 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-30 23:27:38,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-30 23:27:38,459 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-30 23:27:38,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-30 23:27:38,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-30 23:27:38,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-30 23:27:38,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-30 23:27:38,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:27:38,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-30 23:27:38,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-30 23:27:38,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-30 23:27:38,461 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-30 23:27:38,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-30 23:27:38,461 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-30 23:27:38,461 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-30 23:27:38,461 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-30 23:27:38,461 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-30 23:27:38,461 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-30 23:27:38,461 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-30 23:27:38,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-30 23:27:38,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-30 23:27:38,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-30 23:27:38,675 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-30 23:27:38,675 INFO L275 PluginConnector]: CDTParser initialized [2023-03-30 23:27:38,676 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem14_label11.c [2023-03-30 23:27:39,729 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-30 23:27:39,990 INFO L351 CDTParser]: Found 1 translation units. [2023-03-30 23:27:39,991 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label11.c [2023-03-30 23:27:40,000 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/275f6f69c/6dfc28c7420f44f794757d1f9e1e8dcc/FLAGc5662e77c [2023-03-30 23:27:40,014 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/275f6f69c/6dfc28c7420f44f794757d1f9e1e8dcc [2023-03-30 23:27:40,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-30 23:27:40,016 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-30 23:27:40,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-30 23:27:40,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-30 23:27:40,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-30 23:27:40,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:27:40" (1/1) ... [2023-03-30 23:27:40,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3430dca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:27:40, skipping insertion in model container [2023-03-30 23:27:40,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:27:40" (1/1) ... [2023-03-30 23:27:40,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-30 23:27:40,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-30 23:27:40,185 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_label11.c[2373,2386] [2023-03-30 23:27:40,318 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:27:40,341 INFO L203 MainTranslator]: Completed pre-run [2023-03-30 23:27:40,352 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_label11.c[2373,2386] [2023-03-30 23:27:40,441 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:27:40,458 INFO L208 MainTranslator]: Completed translation [2023-03-30 23:27:40,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:27:40 WrapperNode [2023-03-30 23:27:40,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-30 23:27:40,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-30 23:27:40,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-30 23:27:40,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-30 23:27:40,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:27:40" (1/1) ... [2023-03-30 23:27:40,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:27:40" (1/1) ... [2023-03-30 23:27:40,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:27:40" (1/1) ... [2023-03-30 23:27:40,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:27:40" (1/1) ... [2023-03-30 23:27:40,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:27:40" (1/1) ... [2023-03-30 23:27:40,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:27:40" (1/1) ... [2023-03-30 23:27:40,582 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:27:40" (1/1) ... [2023-03-30 23:27:40,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:27:40" (1/1) ... [2023-03-30 23:27:40,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-30 23:27:40,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-30 23:27:40,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-30 23:27:40,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-30 23:27:40,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:27:40" (1/1) ... [2023-03-30 23:27:40,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:27:40,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:27:40,646 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 23:27:40,653 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 23:27:40,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-30 23:27:40,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-30 23:27:40,680 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-30 23:27:40,680 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-03-30 23:27:40,680 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-30 23:27:40,680 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-03-30 23:27:40,681 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-30 23:27:40,681 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-30 23:27:40,681 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-30 23:27:40,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-30 23:27:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-30 23:27:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-30 23:27:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-30 23:27:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-30 23:27:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-30 23:27:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-30 23:27:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-30 23:27:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-30 23:27:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-30 23:27:40,787 INFO L236 CfgBuilder]: Building ICFG [2023-03-30 23:27:40,788 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-30 23:27:41,699 INFO L277 CfgBuilder]: Performing block encoding [2023-03-30 23:27:41,710 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-30 23:27:41,710 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-30 23:27:41,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:27:41 BoogieIcfgContainer [2023-03-30 23:27:41,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-30 23:27:41,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-30 23:27:41,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-30 23:27:41,719 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-30 23:27:41,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 11:27:40" (1/3) ... [2023-03-30 23:27:41,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1717053f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:27:41, skipping insertion in model container [2023-03-30 23:27:41,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:27:40" (2/3) ... [2023-03-30 23:27:41,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1717053f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:27:41, skipping insertion in model container [2023-03-30 23:27:41,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:27:41" (3/3) ... [2023-03-30 23:27:41,721 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label11.c [2023-03-30 23:27:41,733 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-30 23:27:41,733 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-30 23:27:41,783 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-30 23:27:41,788 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;@2493df55, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-30 23:27:41,789 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-30 23:27:41,794 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 23:27:41,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-03-30 23:27:41,800 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:27:41,800 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] [2023-03-30 23:27:41,801 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:27:41,806 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:27:41,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1329515450, now seen corresponding path program 1 times [2023-03-30 23:27:41,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:27:41,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564171631] [2023-03-30 23:27:41,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:27:41,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:27:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:42,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:27:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:42,144 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 23:27:42,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:27:42,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564171631] [2023-03-30 23:27:42,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564171631] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:27:42,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:27:42,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-30 23:27:42,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543284640] [2023-03-30 23:27:42,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:27:42,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:27:42,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:27:42,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:27:42,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:27:42,188 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 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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 23:27:43,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:27:43,481 INFO L93 Difference]: Finished difference Result 886 states and 1613 transitions. [2023-03-30 23:27:43,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-30 23:27:43,483 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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 27 [2023-03-30 23:27:43,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:27:43,493 INFO L225 Difference]: With dead ends: 886 [2023-03-30 23:27:43,494 INFO L226 Difference]: Without dead ends: 564 [2023-03-30 23:27:43,498 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 23:27:43,500 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 996 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-30 23:27:43,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 34 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-30 23:27:43,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2023-03-30 23:27:43,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 558. [2023-03-30 23:27:43,554 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 23:27:43,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 906 transitions. [2023-03-30 23:27:43,557 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 906 transitions. Word has length 27 [2023-03-30 23:27:43,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:27:43,557 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 906 transitions. [2023-03-30 23:27:43,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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 23:27:43,557 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 906 transitions. [2023-03-30 23:27:43,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-03-30 23:27:43,560 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:27:43,560 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-03-30 23:27:43,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-30 23:27:43,560 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:27:43,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:27:43,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1251159347, now seen corresponding path program 1 times [2023-03-30 23:27:43,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:27:43,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913378424] [2023-03-30 23:27:43,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:27:43,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:27:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:43,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:27:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:43,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:27:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:43,826 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:27:43,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:27:43,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913378424] [2023-03-30 23:27:43,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913378424] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:27:43,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:27:43,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-30 23:27:43,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892171247] [2023-03-30 23:27:43,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:27:43,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-30 23:27:43,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:27:43,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-30 23:27:43,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:27:43,829 INFO L87 Difference]: Start difference. First operand 558 states and 906 transitions. Second operand has 8 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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 23:27:45,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:27:45,363 INFO L93 Difference]: Finished difference Result 2246 states and 3775 transitions. [2023-03-30 23:27:45,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-30 23:27:45,363 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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 96 [2023-03-30 23:27:45,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:27:45,374 INFO L225 Difference]: With dead ends: 2246 [2023-03-30 23:27:45,375 INFO L226 Difference]: Without dead ends: 1694 [2023-03-30 23:27:45,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-03-30 23:27:45,380 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 744 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1684 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 1955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 1684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-30 23:27:45,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 57 Invalid, 1955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 1684 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-03-30 23:27:45,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2023-03-30 23:27:45,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 938. [2023-03-30 23:27:45,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 914 states have (on average 1.5404814004376368) internal successors, (1408), 924 states have internal predecessors, (1408), 7 states have call successors, (7), 7 states have call predecessors, (7), 16 states have return successors, (41), 6 states have call predecessors, (41), 6 states have call successors, (41) [2023-03-30 23:27:45,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1456 transitions. [2023-03-30 23:27:45,438 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1456 transitions. Word has length 96 [2023-03-30 23:27:45,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:27:45,443 INFO L495 AbstractCegarLoop]: Abstraction has 938 states and 1456 transitions. [2023-03-30 23:27:45,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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 23:27:45,443 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1456 transitions. [2023-03-30 23:27:45,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-03-30 23:27:45,448 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:27:45,448 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:27:45,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-30 23:27:45,448 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:27:45,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:27:45,448 INFO L85 PathProgramCache]: Analyzing trace with hash 786552719, now seen corresponding path program 1 times [2023-03-30 23:27:45,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:27:45,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140486990] [2023-03-30 23:27:45,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:27:45,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:27:45,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:45,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:27:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:45,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:27:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:45,759 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:27:45,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:27:45,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140486990] [2023-03-30 23:27:45,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140486990] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:27:45,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:27:45,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-30 23:27:45,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900671971] [2023-03-30 23:27:45,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:27:45,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-30 23:27:45,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:27:45,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-30 23:27:45,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:27:45,762 INFO L87 Difference]: Start difference. First operand 938 states and 1456 transitions. Second operand has 8 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 23:27:46,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:27:46,735 INFO L93 Difference]: Finished difference Result 2472 states and 3958 transitions. [2023-03-30 23:27:46,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-30 23:27:46,736 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 126 [2023-03-30 23:27:46,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:27:46,742 INFO L225 Difference]: With dead ends: 2472 [2023-03-30 23:27:46,742 INFO L226 Difference]: Without dead ends: 1540 [2023-03-30 23:27:46,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-03-30 23:27:46,744 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 764 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-30 23:27:46,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 49 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-30 23:27:46,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2023-03-30 23:27:46,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1512. [2023-03-30 23:27:46,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1468 states have (on average 1.3855585831062671) internal successors, (2034), 1492 states have internal predecessors, (2034), 10 states have call successors, (10), 10 states have call predecessors, (10), 33 states have return successors, (97), 9 states have call predecessors, (97), 9 states have call successors, (97) [2023-03-30 23:27:46,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 2141 transitions. [2023-03-30 23:27:46,777 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 2141 transitions. Word has length 126 [2023-03-30 23:27:46,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:27:46,778 INFO L495 AbstractCegarLoop]: Abstraction has 1512 states and 2141 transitions. [2023-03-30 23:27:46,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 23:27:46,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 2141 transitions. [2023-03-30 23:27:46,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-03-30 23:27:46,780 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:27:46,780 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:27:46,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-30 23:27:46,780 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:27:46,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:27:46,781 INFO L85 PathProgramCache]: Analyzing trace with hash 305997811, now seen corresponding path program 1 times [2023-03-30 23:27:46,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:27:46,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451587888] [2023-03-30 23:27:46,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:27:46,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:27:46,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:46,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:27:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:46,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:27:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:47,015 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:27:47,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:27:47,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451587888] [2023-03-30 23:27:47,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451587888] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:27:47,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602408010] [2023-03-30 23:27:47,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:27:47,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:27:47,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:27:47,052 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 23:27:47,055 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 23:27:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:47,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:27:47,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:27:47,214 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:27:47,215 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:27:47,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602408010] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:27:47,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:27:47,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 23:27:47,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268301092] [2023-03-30 23:27:47,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:27:47,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:27:47,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:27:47,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:27:47,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:27:47,217 INFO L87 Difference]: Start difference. First operand 1512 states and 2141 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-30 23:27:47,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:27:47,855 INFO L93 Difference]: Finished difference Result 3572 states and 5100 transitions. [2023-03-30 23:27:47,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:27:47,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 192 [2023-03-30 23:27:47,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:27:47,863 INFO L225 Difference]: With dead ends: 3572 [2023-03-30 23:27:47,863 INFO L226 Difference]: Without dead ends: 2066 [2023-03-30 23:27:47,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 196 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 23:27:47,865 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 163 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:27:47,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 273 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-30 23:27:47,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states. [2023-03-30 23:27:47,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 1700. [2023-03-30 23:27:47,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1700 states, 1651 states have (on average 1.327680193821926) internal successors, (2192), 1678 states have internal predecessors, (2192), 11 states have call successors, (11), 11 states have call predecessors, (11), 37 states have return successors, (114), 10 states have call predecessors, (114), 10 states have call successors, (114) [2023-03-30 23:27:47,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 2317 transitions. [2023-03-30 23:27:47,897 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 2317 transitions. Word has length 192 [2023-03-30 23:27:47,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:27:47,898 INFO L495 AbstractCegarLoop]: Abstraction has 1700 states and 2317 transitions. [2023-03-30 23:27:47,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-30 23:27:47,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 2317 transitions. [2023-03-30 23:27:47,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-03-30 23:27:47,900 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:27:47,901 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:27:47,925 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 23:27:48,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:27:48,126 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:27:48,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:27:48,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1851515679, now seen corresponding path program 1 times [2023-03-30 23:27:48,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:27:48,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704521042] [2023-03-30 23:27:48,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:27:48,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:27:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:48,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:27:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:48,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:27:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:48,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-03-30 23:27:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:48,495 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-30 23:27:48,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:27:48,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704521042] [2023-03-30 23:27:48,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704521042] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:27:48,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285683025] [2023-03-30 23:27:48,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:27:48,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:27:48,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:27:48,497 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 23:27:48,503 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 23:27:48,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:48,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 11 conjunts are in the unsatisfiable core [2023-03-30 23:27:48,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:27:48,961 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-03-30 23:27:48,961 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:27:48,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285683025] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:27:48,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:27:48,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-03-30 23:27:48,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361235178] [2023-03-30 23:27:48,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:27:48,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:27:48,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:27:48,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:27:48,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-03-30 23:27:48,963 INFO L87 Difference]: Start difference. First operand 1700 states and 2317 transitions. Second operand has 5 states, 5 states have (on average 45.8) internal successors, (229), 4 states have internal predecessors, (229), 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 23:27:49,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:27:49,654 INFO L93 Difference]: Finished difference Result 3780 states and 5140 transitions. [2023-03-30 23:27:49,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-30 23:27:49,655 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.8) internal successors, (229), 4 states have internal predecessors, (229), 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 256 [2023-03-30 23:27:49,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:27:49,660 INFO L225 Difference]: With dead ends: 3780 [2023-03-30 23:27:49,660 INFO L226 Difference]: Without dead ends: 2086 [2023-03-30 23:27:49,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:27:49,664 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 305 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:27:49,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 53 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-30 23:27:49,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2086 states. [2023-03-30 23:27:49,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2086 to 2078. [2023-03-30 23:27:49,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2078 states, 2018 states have (on average 1.27998017839445) internal successors, (2583), 2052 states have internal predecessors, (2583), 13 states have call successors, (13), 13 states have call predecessors, (13), 46 states have return successors, (152), 12 states have call predecessors, (152), 12 states have call successors, (152) [2023-03-30 23:27:49,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 2748 transitions. [2023-03-30 23:27:49,704 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 2748 transitions. Word has length 256 [2023-03-30 23:27:49,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:27:49,705 INFO L495 AbstractCegarLoop]: Abstraction has 2078 states and 2748 transitions. [2023-03-30 23:27:49,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.8) internal successors, (229), 4 states have internal predecessors, (229), 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 23:27:49,705 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 2748 transitions. [2023-03-30 23:27:49,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2023-03-30 23:27:49,709 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:27:49,709 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:27:49,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-30 23:27:49,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:27:49,914 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:27:49,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:27:49,915 INFO L85 PathProgramCache]: Analyzing trace with hash 991170174, now seen corresponding path program 1 times [2023-03-30 23:27:49,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:27:49,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546925181] [2023-03-30 23:27:49,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:27:49,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:27:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:50,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:27:50,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:50,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:27:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:50,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-03-30 23:27:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:50,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-03-30 23:27:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:50,731 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 134 proven. 98 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-03-30 23:27:50,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:27:50,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546925181] [2023-03-30 23:27:50,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546925181] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:27:50,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258743244] [2023-03-30 23:27:50,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:27:50,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:27:50,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:27:50,733 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 23:27:50,777 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 23:27:50,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:50,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 11 conjunts are in the unsatisfiable core [2023-03-30 23:27:50,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:27:51,155 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2023-03-30 23:27:51,156 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:27:51,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258743244] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:27:51,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:27:51,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-03-30 23:27:51,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409904152] [2023-03-30 23:27:51,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:27:51,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:27:51,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:27:51,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:27:51,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-03-30 23:27:51,158 INFO L87 Difference]: Start difference. First operand 2078 states and 2748 transitions. Second operand has 5 states, 5 states have (on average 40.8) internal successors, (204), 4 states have internal predecessors, (204), 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 23:27:51,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:27:51,962 INFO L93 Difference]: Finished difference Result 4376 states and 5947 transitions. [2023-03-30 23:27:51,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-30 23:27:51,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.8) internal successors, (204), 4 states have internal predecessors, (204), 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 329 [2023-03-30 23:27:51,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:27:51,971 INFO L225 Difference]: With dead ends: 4376 [2023-03-30 23:27:51,972 INFO L226 Difference]: Without dead ends: 2670 [2023-03-30 23:27:51,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 333 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 23:27:51,976 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 423 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-03-30 23:27:51,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 54 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-03-30 23:27:51,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2670 states. [2023-03-30 23:27:52,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2670 to 2470. [2023-03-30 23:27:52,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2470 states, 2392 states have (on average 1.2412207357859533) internal successors, (2969), 2440 states have internal predecessors, (2969), 15 states have call successors, (15), 15 states have call predecessors, (15), 62 states have return successors, (226), 14 states have call predecessors, (226), 14 states have call successors, (226) [2023-03-30 23:27:52,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2470 states to 2470 states and 3210 transitions. [2023-03-30 23:27:52,033 INFO L78 Accepts]: Start accepts. Automaton has 2470 states and 3210 transitions. Word has length 329 [2023-03-30 23:27:52,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:27:52,033 INFO L495 AbstractCegarLoop]: Abstraction has 2470 states and 3210 transitions. [2023-03-30 23:27:52,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.8) internal successors, (204), 4 states have internal predecessors, (204), 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 23:27:52,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2470 states and 3210 transitions. [2023-03-30 23:27:52,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-03-30 23:27:52,038 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:27:52,038 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:27:52,057 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 23:27:52,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:27:52,243 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:27:52,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:27:52,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1497961493, now seen corresponding path program 1 times [2023-03-30 23:27:52,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:27:52,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343212244] [2023-03-30 23:27:52,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:27:52,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:27:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:52,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:27:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:52,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:27:52,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:52,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-03-30 23:27:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:53,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2023-03-30 23:27:53,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:53,062 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 94 proven. 226 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-03-30 23:27:53,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:27:53,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343212244] [2023-03-30 23:27:53,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343212244] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:27:53,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325233041] [2023-03-30 23:27:53,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:27:53,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:27:53,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:27:53,064 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 23:27:53,066 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 23:27:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:53,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 15 conjunts are in the unsatisfiable core [2023-03-30 23:27:53,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:27:54,370 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 304 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-03-30 23:27:54,371 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:27:57,187 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 65 proven. 258 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-03-30 23:27:57,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325233041] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:27:57,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:27:57,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22 [2023-03-30 23:27:57,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222592469] [2023-03-30 23:27:57,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:27:57,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-03-30 23:27:57,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:27:57,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-03-30 23:27:57,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2023-03-30 23:27:57,190 INFO L87 Difference]: Start difference. First operand 2470 states and 3210 transitions. Second operand has 22 states, 22 states have (on average 37.59090909090909) internal successors, (827), 21 states have internal predecessors, (827), 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 23:28:01,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:28:01,012 INFO L93 Difference]: Finished difference Result 6378 states and 8688 transitions. [2023-03-30 23:28:01,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-03-30 23:28:01,014 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 37.59090909090909) internal successors, (827), 21 states have internal predecessors, (827), 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 340 [2023-03-30 23:28:01,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:28:01,037 INFO L225 Difference]: With dead ends: 6378 [2023-03-30 23:28:01,038 INFO L226 Difference]: Without dead ends: 4192 [2023-03-30 23:28:01,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 760 GetRequests, 703 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=779, Invalid=2527, Unknown=0, NotChecked=0, Total=3306 [2023-03-30 23:28:01,043 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 2855 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 3657 mSolverCounterSat, 981 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2859 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 4638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 981 IncrementalHoareTripleChecker+Valid, 3657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-03-30 23:28:01,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2859 Valid, 149 Invalid, 4638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [981 Valid, 3657 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-03-30 23:28:01,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4192 states. [2023-03-30 23:28:01,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4192 to 3940. [2023-03-30 23:28:01,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3940 states, 3839 states have (on average 1.12425110705913) internal successors, (4316), 3894 states have internal predecessors, (4316), 23 states have call successors, (23), 23 states have call predecessors, (23), 77 states have return successors, (289), 22 states have call predecessors, (289), 22 states have call successors, (289) [2023-03-30 23:28:01,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3940 states to 3940 states and 4628 transitions. [2023-03-30 23:28:01,119 INFO L78 Accepts]: Start accepts. Automaton has 3940 states and 4628 transitions. Word has length 340 [2023-03-30 23:28:01,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:28:01,119 INFO L495 AbstractCegarLoop]: Abstraction has 3940 states and 4628 transitions. [2023-03-30 23:28:01,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 37.59090909090909) internal successors, (827), 21 states have internal predecessors, (827), 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 23:28:01,119 INFO L276 IsEmpty]: Start isEmpty. Operand 3940 states and 4628 transitions. [2023-03-30 23:28:01,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2023-03-30 23:28:01,128 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:28:01,128 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:28:01,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-03-30 23:28:01,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:28:01,340 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:28:01,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:28:01,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1024100409, now seen corresponding path program 1 times [2023-03-30 23:28:01,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:28:01,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607033757] [2023-03-30 23:28:01,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:28:01,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:28:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:01,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:28:01,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:01,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:28:01,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:01,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-30 23:28:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:02,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-03-30 23:28:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:02,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2023-03-30 23:28:02,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:02,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2023-03-30 23:28:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:02,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 331 proven. 231 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2023-03-30 23:28:02,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:28:02,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607033757] [2023-03-30 23:28:02,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607033757] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:28:02,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388485058] [2023-03-30 23:28:02,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:28:02,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:28:02,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:28:02,190 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 23:28:02,199 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 23:28:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:02,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 7 conjunts are in the unsatisfiable core [2023-03-30 23:28:02,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:28:02,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 924 proven. 2 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2023-03-30 23:28:02,697 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:28:04,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 336 proven. 227 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2023-03-30 23:28:04,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388485058] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:28:04,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:28:04,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2023-03-30 23:28:04,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642352580] [2023-03-30 23:28:04,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:28:04,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-03-30 23:28:04,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:28:04,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-03-30 23:28:04,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-03-30 23:28:04,325 INFO L87 Difference]: Start difference. First operand 3940 states and 4628 transitions. Second operand has 14 states, 14 states have (on average 47.714285714285715) internal successors, (668), 12 states have internal predecessors, (668), 6 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-03-30 23:28:08,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:28:08,012 INFO L93 Difference]: Finished difference Result 8820 states and 10413 transitions. [2023-03-30 23:28:08,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-03-30 23:28:08,013 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 47.714285714285715) internal successors, (668), 12 states have internal predecessors, (668), 6 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 608 [2023-03-30 23:28:08,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:28:08,028 INFO L225 Difference]: With dead ends: 8820 [2023-03-30 23:28:08,028 INFO L226 Difference]: Without dead ends: 5070 [2023-03-30 23:28:08,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1316 GetRequests, 1259 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=597, Invalid=2709, Unknown=0, NotChecked=0, Total=3306 [2023-03-30 23:28:08,073 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 3559 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 3085 mSolverCounterSat, 539 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3559 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 3624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 539 IncrementalHoareTripleChecker+Valid, 3085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-03-30 23:28:08,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3559 Valid, 155 Invalid, 3624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [539 Valid, 3085 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-03-30 23:28:08,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5070 states. [2023-03-30 23:28:08,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5070 to 4880. [2023-03-30 23:28:08,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4880 states, 4754 states have (on average 1.0994951619688684) internal successors, (5227), 4824 states have internal predecessors, (5227), 28 states have call successors, (28), 28 states have call predecessors, (28), 97 states have return successors, (316), 27 states have call predecessors, (316), 27 states have call successors, (316) [2023-03-30 23:28:08,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4880 states to 4880 states and 5571 transitions. [2023-03-30 23:28:08,166 INFO L78 Accepts]: Start accepts. Automaton has 4880 states and 5571 transitions. Word has length 608 [2023-03-30 23:28:08,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:28:08,166 INFO L495 AbstractCegarLoop]: Abstraction has 4880 states and 5571 transitions. [2023-03-30 23:28:08,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 47.714285714285715) internal successors, (668), 12 states have internal predecessors, (668), 6 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-03-30 23:28:08,167 INFO L276 IsEmpty]: Start isEmpty. Operand 4880 states and 5571 transitions. [2023-03-30 23:28:08,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2023-03-30 23:28:08,178 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:28:08,178 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:28:08,184 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 23:28:08,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:28:08,384 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:28:08,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:28:08,384 INFO L85 PathProgramCache]: Analyzing trace with hash 495472910, now seen corresponding path program 1 times [2023-03-30 23:28:08,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:28:08,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190559515] [2023-03-30 23:28:08,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:28:08,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:28:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:09,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:28:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:09,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:28:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:09,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-30 23:28:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:09,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-03-30 23:28:09,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:09,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2023-03-30 23:28:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:09,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2023-03-30 23:28:09,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:09,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 259 proven. 511 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2023-03-30 23:28:09,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:28:09,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190559515] [2023-03-30 23:28:09,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190559515] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:28:09,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301327810] [2023-03-30 23:28:09,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:28:09,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:28:09,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:28:09,649 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 23:28:09,670 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 23:28:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:09,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 950 conjuncts, 7 conjunts are in the unsatisfiable core [2023-03-30 23:28:09,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:28:09,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 828 proven. 2 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2023-03-30 23:28:09,970 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:28:10,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 465 proven. 99 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2023-03-30 23:28:10,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301327810] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:28:10,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:28:10,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 12 [2023-03-30 23:28:10,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381379958] [2023-03-30 23:28:10,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:28:10,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-30 23:28:10,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:28:10,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-30 23:28:10,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:28:10,763 INFO L87 Difference]: Start difference. First operand 4880 states and 5571 transitions. Second operand has 12 states, 12 states have (on average 51.75) internal successors, (621), 10 states have internal predecessors, (621), 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 23:28:12,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:28:12,538 INFO L93 Difference]: Finished difference Result 11614 states and 13247 transitions. [2023-03-30 23:28:12,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-30 23:28:12,539 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 51.75) internal successors, (621), 10 states have internal predecessors, (621), 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 637 [2023-03-30 23:28:12,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:28:12,558 INFO L225 Difference]: With dead ends: 11614 [2023-03-30 23:28:12,558 INFO L226 Difference]: Without dead ends: 6924 [2023-03-30 23:28:12,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1323 GetRequests, 1297 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=217, Invalid=539, Unknown=0, NotChecked=0, Total=756 [2023-03-30 23:28:12,567 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 2839 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2839 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 1646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-30 23:28:12,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2839 Valid, 54 Invalid, 1646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 1252 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-30 23:28:12,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6924 states. [2023-03-30 23:28:12,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6924 to 4882. [2023-03-30 23:28:12,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4882 states, 4755 states have (on average 1.0982124079915878) internal successors, (5222), 4826 states have internal predecessors, (5222), 28 states have call successors, (28), 28 states have call predecessors, (28), 98 states have return successors, (312), 27 states have call predecessors, (312), 27 states have call successors, (312) [2023-03-30 23:28:12,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4882 states to 4882 states and 5562 transitions. [2023-03-30 23:28:12,681 INFO L78 Accepts]: Start accepts. Automaton has 4882 states and 5562 transitions. Word has length 637 [2023-03-30 23:28:12,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:28:12,682 INFO L495 AbstractCegarLoop]: Abstraction has 4882 states and 5562 transitions. [2023-03-30 23:28:12,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 51.75) internal successors, (621), 10 states have internal predecessors, (621), 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 23:28:12,682 INFO L276 IsEmpty]: Start isEmpty. Operand 4882 states and 5562 transitions. [2023-03-30 23:28:12,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2023-03-30 23:28:12,688 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:28:12,688 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 23:28:12,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-03-30 23:28:12,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:28:12,895 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:28:12,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:28:12,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1254516203, now seen corresponding path program 1 times [2023-03-30 23:28:12,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:28:12,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940833760] [2023-03-30 23:28:12,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:28:12,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:28:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:13,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:28:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:13,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:28:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:13,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-30 23:28:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:13,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-03-30 23:28:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:13,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2023-03-30 23:28:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:14,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2023-03-30 23:28:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:14,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1205 backedges. 496 proven. 106 refuted. 0 times theorem prover too weak. 603 trivial. 0 not checked. [2023-03-30 23:28:14,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:28:14,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940833760] [2023-03-30 23:28:14,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940833760] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:28:14,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462793156] [2023-03-30 23:28:14,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:28:14,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:28:14,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:28:14,035 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 23:28:14,037 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 23:28:14,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:14,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 1002 conjuncts, 14 conjunts are in the unsatisfiable core [2023-03-30 23:28:14,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:28:14,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1205 backedges. 860 proven. 2 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2023-03-30 23:28:14,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:28:15,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1205 backedges. 497 proven. 99 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2023-03-30 23:28:15,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462793156] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:28:15,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:28:15,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 13 [2023-03-30 23:28:15,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917505378] [2023-03-30 23:28:15,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:28:15,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-03-30 23:28:15,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:28:15,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-03-30 23:28:15,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-03-30 23:28:15,632 INFO L87 Difference]: Start difference. First operand 4882 states and 5562 transitions. Second operand has 13 states, 13 states have (on average 48.84615384615385) internal successors, (635), 11 states have internal predecessors, (635), 6 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2023-03-30 23:28:17,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:28:17,799 INFO L93 Difference]: Finished difference Result 10678 states and 12141 transitions. [2023-03-30 23:28:17,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-03-30 23:28:17,805 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 48.84615384615385) internal successors, (635), 11 states have internal predecessors, (635), 6 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) Word has length 686 [2023-03-30 23:28:17,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:28:17,823 INFO L225 Difference]: With dead ends: 10678 [2023-03-30 23:28:17,824 INFO L226 Difference]: Without dead ends: 5986 [2023-03-30 23:28:17,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1436 GetRequests, 1401 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=318, Invalid=1014, Unknown=0, NotChecked=0, Total=1332 [2023-03-30 23:28:17,862 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 2626 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 2320 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2629 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 2694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 2320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-03-30 23:28:17,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2629 Valid, 55 Invalid, 2694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 2320 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-03-30 23:28:17,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5986 states. [2023-03-30 23:28:17,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5986 to 4890. [2023-03-30 23:28:17,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4890 states, 4759 states have (on average 1.0924563984030258) internal successors, (5199), 4834 states have internal predecessors, (5199), 28 states have call successors, (28), 28 states have call predecessors, (28), 102 states have return successors, (307), 27 states have call predecessors, (307), 27 states have call successors, (307) [2023-03-30 23:28:17,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4890 states to 4890 states and 5534 transitions. [2023-03-30 23:28:17,985 INFO L78 Accepts]: Start accepts. Automaton has 4890 states and 5534 transitions. Word has length 686 [2023-03-30 23:28:17,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:28:17,986 INFO L495 AbstractCegarLoop]: Abstraction has 4890 states and 5534 transitions. [2023-03-30 23:28:17,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 48.84615384615385) internal successors, (635), 11 states have internal predecessors, (635), 6 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2023-03-30 23:28:17,986 INFO L276 IsEmpty]: Start isEmpty. Operand 4890 states and 5534 transitions. [2023-03-30 23:28:17,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 718 [2023-03-30 23:28:17,992 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:28:17,993 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:28:18,017 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 23:28:18,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:28:18,218 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:28:18,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:28:18,219 INFO L85 PathProgramCache]: Analyzing trace with hash 983621974, now seen corresponding path program 1 times [2023-03-30 23:28:18,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:28:18,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860044294] [2023-03-30 23:28:18,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:28:18,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:28:18,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:18,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:28:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:18,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:28:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:18,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-30 23:28:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:18,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-03-30 23:28:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:18,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2023-03-30 23:28:18,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:18,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2023-03-30 23:28:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:18,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2023-03-30 23:28:18,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:18,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 510 proven. 358 refuted. 0 times theorem prover too weak. 692 trivial. 0 not checked. [2023-03-30 23:28:18,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:28:18,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860044294] [2023-03-30 23:28:18,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860044294] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:28:18,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671200831] [2023-03-30 23:28:18,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:28:18,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:28:18,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:28:18,969 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 23:28:19,010 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 23:28:19,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:19,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 1071 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:28:19,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:28:19,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 1095 proven. 2 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2023-03-30 23:28:19,252 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:28:19,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 376 proven. 150 refuted. 0 times theorem prover too weak. 1034 trivial. 0 not checked. [2023-03-30 23:28:19,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671200831] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:28:19,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:28:19,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 10 [2023-03-30 23:28:19,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639607190] [2023-03-30 23:28:19,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:28:19,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-30 23:28:19,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:28:19,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-30 23:28:19,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-03-30 23:28:19,461 INFO L87 Difference]: Start difference. First operand 4890 states and 5534 transitions. Second operand has 10 states, 10 states have (on average 62.9) internal successors, (629), 8 states have internal predecessors, (629), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-03-30 23:28:20,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:28:20,711 INFO L93 Difference]: Finished difference Result 11434 states and 12948 transitions. [2023-03-30 23:28:20,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-03-30 23:28:20,711 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 62.9) internal successors, (629), 8 states have internal predecessors, (629), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 717 [2023-03-30 23:28:20,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:28:20,769 INFO L225 Difference]: With dead ends: 11434 [2023-03-30 23:28:20,769 INFO L226 Difference]: Without dead ends: 6734 [2023-03-30 23:28:20,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1469 GetRequests, 1451 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2023-03-30 23:28:20,777 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 973 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-30 23:28:20,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 69 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-30 23:28:20,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6734 states. [2023-03-30 23:28:20,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6734 to 6358. [2023-03-30 23:28:20,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6358 states, 6205 states have (on average 1.0838033843674455) internal successors, (6725), 6286 states have internal predecessors, (6725), 36 states have call successors, (36), 36 states have call predecessors, (36), 116 states have return successors, (357), 35 states have call predecessors, (357), 35 states have call successors, (357) [2023-03-30 23:28:20,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6358 states to 6358 states and 7118 transitions. [2023-03-30 23:28:20,905 INFO L78 Accepts]: Start accepts. Automaton has 6358 states and 7118 transitions. Word has length 717 [2023-03-30 23:28:20,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:28:20,906 INFO L495 AbstractCegarLoop]: Abstraction has 6358 states and 7118 transitions. [2023-03-30 23:28:20,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 62.9) internal successors, (629), 8 states have internal predecessors, (629), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-03-30 23:28:20,906 INFO L276 IsEmpty]: Start isEmpty. Operand 6358 states and 7118 transitions. [2023-03-30 23:28:20,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 862 [2023-03-30 23:28:20,914 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:28:20,914 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:28:20,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-03-30 23:28:21,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-03-30 23:28:21,120 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:28:21,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:28:21,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1401443802, now seen corresponding path program 1 times [2023-03-30 23:28:21,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:28:21,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111735187] [2023-03-30 23:28:21,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:28:21,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:28:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:21,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:28:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:21,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:28:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:21,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-30 23:28:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:21,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-03-30 23:28:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:22,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2023-03-30 23:28:22,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:22,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2023-03-30 23:28:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:22,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2023-03-30 23:28:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:22,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 743 [2023-03-30 23:28:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:22,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2136 backedges. 476 proven. 361 refuted. 0 times theorem prover too weak. 1299 trivial. 0 not checked. [2023-03-30 23:28:22,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:28:22,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111735187] [2023-03-30 23:28:22,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111735187] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:28:22,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144532768] [2023-03-30 23:28:22,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:28:22,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:28:22,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:28:22,197 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 23:28:22,197 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 23:28:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:22,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 1252 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:28:22,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:28:22,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2136 backedges. 1549 proven. 2 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2023-03-30 23:28:22,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:28:23,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2136 backedges. 483 proven. 348 refuted. 0 times theorem prover too weak. 1305 trivial. 0 not checked. [2023-03-30 23:28:23,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144532768] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:28:23,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:28:23,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 14 [2023-03-30 23:28:23,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940935587] [2023-03-30 23:28:23,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:28:23,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-03-30 23:28:23,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:28:23,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-03-30 23:28:23,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-03-30 23:28:23,134 INFO L87 Difference]: Start difference. First operand 6358 states and 7118 transitions. Second operand has 14 states, 14 states have (on average 64.71428571428571) internal successors, (906), 12 states have internal predecessors, (906), 6 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-03-30 23:28:25,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:28:25,613 INFO L93 Difference]: Finished difference Result 14718 states and 16444 transitions. [2023-03-30 23:28:25,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-03-30 23:28:25,623 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 64.71428571428571) internal successors, (906), 12 states have internal predecessors, (906), 6 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 861 [2023-03-30 23:28:25,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:28:25,633 INFO L225 Difference]: With dead ends: 14718 [2023-03-30 23:28:25,633 INFO L226 Difference]: Without dead ends: 4268 [2023-03-30 23:28:25,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1787 GetRequests, 1753 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=292, Invalid=968, Unknown=0, NotChecked=0, Total=1260 [2023-03-30 23:28:25,647 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 2289 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 3558 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2289 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 3932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 3558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-03-30 23:28:25,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2289 Valid, 81 Invalid, 3932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 3558 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-03-30 23:28:25,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4268 states. [2023-03-30 23:28:25,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4268 to 4078. [2023-03-30 23:28:25,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4078 states, 3997 states have (on average 1.0335251438578934) internal successors, (4131), 4030 states have internal predecessors, (4131), 24 states have call successors, (24), 24 states have call predecessors, (24), 56 states have return successors, (148), 23 states have call predecessors, (148), 23 states have call successors, (148) [2023-03-30 23:28:25,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4078 states to 4078 states and 4303 transitions. [2023-03-30 23:28:25,713 INFO L78 Accepts]: Start accepts. Automaton has 4078 states and 4303 transitions. Word has length 861 [2023-03-30 23:28:25,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:28:25,714 INFO L495 AbstractCegarLoop]: Abstraction has 4078 states and 4303 transitions. [2023-03-30 23:28:25,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 64.71428571428571) internal successors, (906), 12 states have internal predecessors, (906), 6 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-03-30 23:28:25,714 INFO L276 IsEmpty]: Start isEmpty. Operand 4078 states and 4303 transitions. [2023-03-30 23:28:25,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2023-03-30 23:28:25,722 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:28:25,723 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-03-30 23:28:25,729 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 23:28:25,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:28:25,930 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:28:25,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:28:25,930 INFO L85 PathProgramCache]: Analyzing trace with hash -186430394, now seen corresponding path program 1 times [2023-03-30 23:28:25,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:28:25,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002628206] [2023-03-30 23:28:25,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:28:25,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:28:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:26,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:28:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:26,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:28:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:26,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-30 23:28:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:26,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-03-30 23:28:26,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:26,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2023-03-30 23:28:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:26,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2023-03-30 23:28:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:26,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 590 [2023-03-30 23:28:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:26,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 769 [2023-03-30 23:28:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:26,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2254 backedges. 390 proven. 385 refuted. 0 times theorem prover too weak. 1479 trivial. 0 not checked. [2023-03-30 23:28:26,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:28:26,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002628206] [2023-03-30 23:28:26,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002628206] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:28:26,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99228391] [2023-03-30 23:28:26,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:28:26,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:28:26,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:28:26,718 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 23:28:26,752 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 23:28:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:26,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 1276 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:28:26,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:28:27,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2254 backedges. 1616 proven. 2 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2023-03-30 23:28:27,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:28:28,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2254 backedges. 509 proven. 348 refuted. 0 times theorem prover too weak. 1397 trivial. 0 not checked. [2023-03-30 23:28:28,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99228391] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:28:28,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:28:28,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-03-30 23:28:28,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565581611] [2023-03-30 23:28:28,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:28:28,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-30 23:28:28,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:28:28,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-30 23:28:28,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-03-30 23:28:28,512 INFO L87 Difference]: Start difference. First operand 4078 states and 4303 transitions. Second operand has 11 states, 11 states have (on average 75.0909090909091) internal successors, (826), 9 states have internal predecessors, (826), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-03-30 23:28:29,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:28:29,506 INFO L93 Difference]: Finished difference Result 9128 states and 9712 transitions. [2023-03-30 23:28:29,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-03-30 23:28:29,506 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 75.0909090909091) internal successors, (826), 9 states have internal predecessors, (826), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 887 [2023-03-30 23:28:29,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:28:29,516 INFO L225 Difference]: With dead ends: 9128 [2023-03-30 23:28:29,516 INFO L226 Difference]: Without dead ends: 5422 [2023-03-30 23:28:29,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1817 GetRequests, 1794 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2023-03-30 23:28:29,523 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1541 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1356 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-03-30 23:28:29,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1546 Valid, 89 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1356 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-03-30 23:28:29,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5422 states. [2023-03-30 23:28:29,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5422 to 5194. [2023-03-30 23:28:29,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5194 states, 5089 states have (on average 1.0273138141088622) internal successors, (5228), 5134 states have internal predecessors, (5228), 30 states have call successors, (30), 30 states have call predecessors, (30), 74 states have return successors, (161), 29 states have call predecessors, (161), 29 states have call successors, (161) [2023-03-30 23:28:29,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5194 states to 5194 states and 5419 transitions. [2023-03-30 23:28:29,622 INFO L78 Accepts]: Start accepts. Automaton has 5194 states and 5419 transitions. Word has length 887 [2023-03-30 23:28:29,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:28:29,622 INFO L495 AbstractCegarLoop]: Abstraction has 5194 states and 5419 transitions. [2023-03-30 23:28:29,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 75.0909090909091) internal successors, (826), 9 states have internal predecessors, (826), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-03-30 23:28:29,622 INFO L276 IsEmpty]: Start isEmpty. Operand 5194 states and 5419 transitions. [2023-03-30 23:28:29,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 976 [2023-03-30 23:28:29,631 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:28:29,631 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:28:29,639 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 23:28:29,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-03-30 23:28:29,837 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:28:29,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:28:29,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1559763402, now seen corresponding path program 1 times [2023-03-30 23:28:29,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:28:29,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795625322] [2023-03-30 23:28:29,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:28:29,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:28:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:30,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:28:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:30,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:28:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:30,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-30 23:28:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:30,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-03-30 23:28:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:30,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2023-03-30 23:28:30,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:30,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2023-03-30 23:28:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:30,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2023-03-30 23:28:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:30,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2023-03-30 23:28:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:31,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2023-03-30 23:28:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:31,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 1610 proven. 16 refuted. 0 times theorem prover too weak. 1224 trivial. 0 not checked. [2023-03-30 23:28:31,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:28:31,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795625322] [2023-03-30 23:28:31,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795625322] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:28:31,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433469390] [2023-03-30 23:28:31,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:28:31,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:28:31,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:28:31,069 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 23:28:31,071 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 23:28:31,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:31,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 1400 conjuncts, 9 conjunts are in the unsatisfiable core [2023-03-30 23:28:31,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:28:31,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 1398 proven. 6 refuted. 0 times theorem prover too weak. 1446 trivial. 0 not checked. [2023-03-30 23:28:31,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:28:32,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 1398 proven. 99 refuted. 0 times theorem prover too weak. 1353 trivial. 0 not checked. [2023-03-30 23:28:32,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433469390] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:28:32,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:28:32,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 8] total 20 [2023-03-30 23:28:32,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498844124] [2023-03-30 23:28:32,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:28:32,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-03-30 23:28:32,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:28:32,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-03-30 23:28:32,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2023-03-30 23:28:32,313 INFO L87 Difference]: Start difference. First operand 5194 states and 5419 transitions. Second operand has 20 states, 20 states have (on average 42.6) internal successors, (852), 18 states have internal predecessors, (852), 9 states have call successors, (13), 7 states have call predecessors, (13), 9 states have return successors, (12), 9 states have call predecessors, (12), 8 states have call successors, (12) [2023-03-30 23:28:34,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:28:34,465 INFO L93 Difference]: Finished difference Result 11498 states and 12026 transitions. [2023-03-30 23:28:34,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-03-30 23:28:34,466 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 42.6) internal successors, (852), 18 states have internal predecessors, (852), 9 states have call successors, (13), 7 states have call predecessors, (13), 9 states have return successors, (12), 9 states have call predecessors, (12), 8 states have call successors, (12) Word has length 975 [2023-03-30 23:28:34,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:28:34,485 INFO L225 Difference]: With dead ends: 11498 [2023-03-30 23:28:34,485 INFO L226 Difference]: Without dead ends: 6676 [2023-03-30 23:28:34,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2022 GetRequests, 1979 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=497, Invalid=1395, Unknown=0, NotChecked=0, Total=1892 [2023-03-30 23:28:34,494 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 3354 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 3566 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3354 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 3736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 3566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-03-30 23:28:34,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3354 Valid, 113 Invalid, 3736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 3566 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-03-30 23:28:34,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6676 states. [2023-03-30 23:28:34,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6676 to 5200. [2023-03-30 23:28:34,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5200 states, 5092 states have (on average 1.0251374705420266) internal successors, (5220), 5140 states have internal predecessors, (5220), 30 states have call successors, (30), 30 states have call predecessors, (30), 77 states have return successors, (150), 29 states have call predecessors, (150), 29 states have call successors, (150) [2023-03-30 23:28:34,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5200 states to 5200 states and 5400 transitions. [2023-03-30 23:28:34,631 INFO L78 Accepts]: Start accepts. Automaton has 5200 states and 5400 transitions. Word has length 975 [2023-03-30 23:28:34,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:28:34,632 INFO L495 AbstractCegarLoop]: Abstraction has 5200 states and 5400 transitions. [2023-03-30 23:28:34,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 42.6) internal successors, (852), 18 states have internal predecessors, (852), 9 states have call successors, (13), 7 states have call predecessors, (13), 9 states have return successors, (12), 9 states have call predecessors, (12), 8 states have call successors, (12) [2023-03-30 23:28:34,632 INFO L276 IsEmpty]: Start isEmpty. Operand 5200 states and 5400 transitions. [2023-03-30 23:28:34,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1229 [2023-03-30 23:28:34,645 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:28:34,645 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:28:34,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-03-30 23:28:34,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-03-30 23:28:34,852 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:28:34,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:28:34,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1108920005, now seen corresponding path program 1 times [2023-03-30 23:28:34,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:28:34,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332111125] [2023-03-30 23:28:34,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:28:34,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:28:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:35,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:28:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:35,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:28:35,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:35,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-30 23:28:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:35,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-03-30 23:28:35,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:36,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2023-03-30 23:28:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:36,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2023-03-30 23:28:36,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:36,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2023-03-30 23:28:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:36,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2023-03-30 23:28:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:36,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2023-03-30 23:28:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:36,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 997 [2023-03-30 23:28:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:36,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1110 [2023-03-30 23:28:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:36,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4689 backedges. 1035 proven. 229 refuted. 0 times theorem prover too weak. 3425 trivial. 0 not checked. [2023-03-30 23:28:36,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:28:36,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332111125] [2023-03-30 23:28:36,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332111125] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:28:36,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468072630] [2023-03-30 23:28:36,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:28:36,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:28:36,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:28:36,304 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:28:36,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-03-30 23:28:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:28:36,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:28:36,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:28:36,756 INFO L134 CoverageAnalysis]: Checked inductivity of 4689 backedges. 1876 proven. 2 refuted. 0 times theorem prover too weak. 2811 trivial. 0 not checked. [2023-03-30 23:28:36,756 INFO L327 TraceCheckSpWp]: Computing backward predicates...