/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_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-30 23:29:40,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-30 23:29:40,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-30 23:29:40,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-30 23:29:40,638 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-30 23:29:40,658 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-30 23:29:40,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-30 23:29:40,658 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-30 23:29:40,658 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-30 23:29:40,659 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-30 23:29:40,659 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-30 23:29:40,659 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-30 23:29:40,659 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-30 23:29:40,660 INFO L138 SettingsManager]: * Use SBE=true [2023-03-30 23:29:40,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-30 23:29:40,660 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-30 23:29:40,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-30 23:29:40,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-30 23:29:40,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-30 23:29:40,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-30 23:29:40,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-30 23:29:40,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-30 23:29:40,661 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-30 23:29:40,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-30 23:29:40,661 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-30 23:29:40,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-30 23:29:40,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-30 23:29:40,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-30 23:29:40,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-30 23:29:40,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:29:40,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-30 23:29:40,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-30 23:29:40,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-30 23:29:40,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-30 23:29:40,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-30 23:29:40,662 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-30 23:29:40,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-30 23:29:40,663 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-30 23:29:40,663 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-30 23:29:40,663 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-30 23:29:40,663 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-30 23:29:40,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-30 23:29:40,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-30 23:29:40,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-30 23:29:40,867 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-30 23:29:40,872 INFO L275 PluginConnector]: CDTParser initialized [2023-03-30 23:29:40,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem14_label51.c [2023-03-30 23:29:41,789 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-30 23:29:42,059 INFO L351 CDTParser]: Found 1 translation units. [2023-03-30 23:29:42,060 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label51.c [2023-03-30 23:29:42,080 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03c297a06/7fe32ef67075443a8ac96fd795695c5b/FLAGffbde0a99 [2023-03-30 23:29:42,094 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03c297a06/7fe32ef67075443a8ac96fd795695c5b [2023-03-30 23:29:42,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-30 23:29:42,097 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-30 23:29:42,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-30 23:29:42,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-30 23:29:42,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-30 23:29:42,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:29:42" (1/1) ... [2023-03-30 23:29:42,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d202b87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:42, skipping insertion in model container [2023-03-30 23:29:42,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:29:42" (1/1) ... [2023-03-30 23:29:42,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-30 23:29:42,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-30 23:29:42,299 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_label51.c[3722,3735] [2023-03-30 23:29:42,396 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:29:42,403 INFO L203 MainTranslator]: Completed pre-run [2023-03-30 23:29:42,415 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_label51.c[3722,3735] [2023-03-30 23:29:42,467 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:29:42,477 INFO L208 MainTranslator]: Completed translation [2023-03-30 23:29:42,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:42 WrapperNode [2023-03-30 23:29:42,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-30 23:29:42,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-30 23:29:42,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-30 23:29:42,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-30 23:29:42,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:42" (1/1) ... [2023-03-30 23:29:42,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:42" (1/1) ... [2023-03-30 23:29:42,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:42" (1/1) ... [2023-03-30 23:29:42,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:42" (1/1) ... [2023-03-30 23:29:42,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:42" (1/1) ... [2023-03-30 23:29:42,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:42" (1/1) ... [2023-03-30 23:29:42,587 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:42" (1/1) ... [2023-03-30 23:29:42,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:42" (1/1) ... [2023-03-30 23:29:42,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-30 23:29:42,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-30 23:29:42,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-30 23:29:42,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-30 23:29:42,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:42" (1/1) ... [2023-03-30 23:29:42,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:29:42,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:29:42,647 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-30 23:29:42,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-30 23:29:42,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-30 23:29:42,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-30 23:29:42,687 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-30 23:29:42,687 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-03-30 23:29:42,687 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-30 23:29:42,687 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-03-30 23:29:42,687 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-30 23:29:42,688 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-30 23:29:42,688 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-30 23:29:42,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-30 23:29:42,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-30 23:29:42,688 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-30 23:29:42,688 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-30 23:29:42,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-30 23:29:42,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-30 23:29:42,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-30 23:29:42,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-30 23:29:42,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-30 23:29:42,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-30 23:29:42,753 INFO L236 CfgBuilder]: Building ICFG [2023-03-30 23:29:42,755 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-30 23:29:43,661 INFO L277 CfgBuilder]: Performing block encoding [2023-03-30 23:29:43,667 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-30 23:29:43,667 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-30 23:29:43,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:29:43 BoogieIcfgContainer [2023-03-30 23:29:43,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-30 23:29:43,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-30 23:29:43,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-30 23:29:43,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-30 23:29:43,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 11:29:42" (1/3) ... [2023-03-30 23:29:43,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e380c7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:29:43, skipping insertion in model container [2023-03-30 23:29:43,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:42" (2/3) ... [2023-03-30 23:29:43,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e380c7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:29:43, skipping insertion in model container [2023-03-30 23:29:43,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:29:43" (3/3) ... [2023-03-30 23:29:43,674 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label51.c [2023-03-30 23:29:43,686 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-30 23:29:43,686 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-30 23:29:43,719 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-30 23:29:43,723 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;@68a89428, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-30 23:29:43,723 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-30 23:29:43,726 INFO L276 IsEmpty]: Start isEmpty. Operand has 254 states, 246 states have (on average 1.7276422764227641) internal successors, (425), 247 states have internal predecessors, (425), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-30 23:29:43,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-03-30 23:29:43,732 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:29:43,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:29:43,732 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:29:43,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:29:43,736 INFO L85 PathProgramCache]: Analyzing trace with hash -955943406, now seen corresponding path program 1 times [2023-03-30 23:29:43,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:29:43,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544343574] [2023-03-30 23:29:43,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:43,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:29:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:44,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:29:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:44,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:29:44,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:29:44,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544343574] [2023-03-30 23:29:44,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544343574] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:29:44,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:29:44,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-30 23:29:44,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007453303] [2023-03-30 23:29:44,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:29:44,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:29:44,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:29:44,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:29:44,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:29:44,045 INFO L87 Difference]: Start difference. First operand has 254 states, 246 states have (on average 1.7276422764227641) internal successors, (425), 247 states have internal predecessors, (425), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:29:45,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:29:45,406 INFO L93 Difference]: Finished difference Result 886 states and 1613 transitions. [2023-03-30 23:29:45,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-30 23:29:45,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 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 41 [2023-03-30 23:29:45,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:29:45,417 INFO L225 Difference]: With dead ends: 886 [2023-03-30 23:29:45,417 INFO L226 Difference]: Without dead ends: 564 [2023-03-30 23:29:45,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:29:45,423 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 1249 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-30 23:29:45,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1249 Valid, 31 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [454 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-30 23:29:45,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2023-03-30 23:29:45,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 558. [2023-03-30 23:29:45,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 546 states have (on average 1.6282051282051282) internal successors, (889), 548 states have internal predecessors, (889), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-03-30 23:29:45,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 906 transitions. [2023-03-30 23:29:45,478 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 906 transitions. Word has length 41 [2023-03-30 23:29:45,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:29:45,478 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 906 transitions. [2023-03-30 23:29:45,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:29:45,478 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 906 transitions. [2023-03-30 23:29:45,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-03-30 23:29:45,481 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:29:45,482 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:29:45,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-30 23:29:45,482 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:29:45,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:29:45,483 INFO L85 PathProgramCache]: Analyzing trace with hash 2026531722, now seen corresponding path program 1 times [2023-03-30 23:29:45,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:29:45,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26940525] [2023-03-30 23:29:45,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:45,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:29:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:45,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:29:45,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:45,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:29:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:45,913 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:29:45,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:29:45,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26940525] [2023-03-30 23:29:45,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26940525] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:29:45,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:29:45,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-30 23:29:45,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817915216] [2023-03-30 23:29:45,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:29:45,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-30 23:29:45,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:29:45,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-30 23:29:45,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:29:45,918 INFO L87 Difference]: Start difference. First operand 558 states and 906 transitions. Second operand has 7 states, 6 states have (on average 20.166666666666668) internal successors, (121), 4 states have internal predecessors, (121), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:29:46,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:29:46,911 INFO L93 Difference]: Finished difference Result 1698 states and 2816 transitions. [2023-03-30 23:29:46,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-30 23:29:46,922 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.166666666666668) internal successors, (121), 4 states have internal predecessors, (121), 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 127 [2023-03-30 23:29:46,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:29:46,934 INFO L225 Difference]: With dead ends: 1698 [2023-03-30 23:29:46,934 INFO L226 Difference]: Without dead ends: 1146 [2023-03-30 23:29:46,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:29:46,938 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 816 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-30 23:29:46,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 38 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-30 23:29:46,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2023-03-30 23:29:46,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 566. [2023-03-30 23:29:46,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 550 states have (on average 1.481818181818182) internal successors, (815), 556 states have internal predecessors, (815), 5 states have call successors, (5), 5 states have call predecessors, (5), 10 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2023-03-30 23:29:46,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 839 transitions. [2023-03-30 23:29:46,985 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 839 transitions. Word has length 127 [2023-03-30 23:29:46,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:29:46,990 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 839 transitions. [2023-03-30 23:29:46,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.166666666666668) internal successors, (121), 4 states have internal predecessors, (121), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:29:46,990 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 839 transitions. [2023-03-30 23:29:46,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-03-30 23:29:46,995 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:29:46,995 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:29:46,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-30 23:29:46,995 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:29:46,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:29:46,996 INFO L85 PathProgramCache]: Analyzing trace with hash 604128319, now seen corresponding path program 1 times [2023-03-30 23:29:46,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:29:46,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610030366] [2023-03-30 23:29:46,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:46,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:29:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:47,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:29:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:47,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:29:47,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:47,177 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:29:47,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:29:47,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610030366] [2023-03-30 23:29:47,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610030366] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:29:47,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223702930] [2023-03-30 23:29:47,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:47,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:47,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:29:47,181 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:29:47,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-30 23:29:47,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:47,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:29:47,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:29:47,328 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:29:47,329 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:29:47,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223702930] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:29:47,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:29:47,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 23:29:47,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906100376] [2023-03-30 23:29:47,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:29:47,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:29:47,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:29:47,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:29:47,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:29:47,330 INFO L87 Difference]: Start difference. First operand 566 states and 839 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-30 23:29:48,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:29:48,077 INFO L93 Difference]: Finished difference Result 1682 states and 2536 transitions. [2023-03-30 23:29:48,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:29:48,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 136 [2023-03-30 23:29:48,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:29:48,082 INFO L225 Difference]: With dead ends: 1682 [2023-03-30 23:29:48,082 INFO L226 Difference]: Without dead ends: 1122 [2023-03-30 23:29:48,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:29:48,083 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 146 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-03-30 23:29:48,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 323 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-03-30 23:29:48,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2023-03-30 23:29:48,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 936. [2023-03-30 23:29:48,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 913 states have (on average 1.362541073384447) internal successors, (1244), 922 states have internal predecessors, (1244), 7 states have call successors, (7), 7 states have call predecessors, (7), 15 states have return successors, (41), 6 states have call predecessors, (41), 6 states have call successors, (41) [2023-03-30 23:29:48,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1292 transitions. [2023-03-30 23:29:48,102 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1292 transitions. Word has length 136 [2023-03-30 23:29:48,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:29:48,102 INFO L495 AbstractCegarLoop]: Abstraction has 936 states and 1292 transitions. [2023-03-30 23:29:48,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-30 23:29:48,102 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1292 transitions. [2023-03-30 23:29:48,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-03-30 23:29:48,104 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:29:48,104 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:29:48,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-03-30 23:29:48,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:48,309 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:29:48,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:29:48,309 INFO L85 PathProgramCache]: Analyzing trace with hash -432587105, now seen corresponding path program 1 times [2023-03-30 23:29:48,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:29:48,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235985716] [2023-03-30 23:29:48,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:48,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:29:48,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:48,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:29:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:48,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:29:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:48,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-03-30 23:29:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:48,587 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-30 23:29:48,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:29:48,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235985716] [2023-03-30 23:29:48,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235985716] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:29:48,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349287393] [2023-03-30 23:29:48,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:48,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:48,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:29:48,589 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:29:48,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-30 23:29:48,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:48,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:29:48,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:29:48,856 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:29:48,856 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:29:49,100 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:29:49,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349287393] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:29:49,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:29:49,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-03-30 23:29:49,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243033343] [2023-03-30 23:29:49,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:29:49,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-30 23:29:49,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:29:49,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-30 23:29:49,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:29:49,103 INFO L87 Difference]: Start difference. First operand 936 states and 1292 transitions. Second operand has 12 states, 12 states have (on average 31.25) internal successors, (375), 10 states have internal predecessors, (375), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-30 23:29:51,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:29:51,244 INFO L93 Difference]: Finished difference Result 3212 states and 4627 transitions. [2023-03-30 23:29:51,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-03-30 23:29:51,245 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 31.25) internal successors, (375), 10 states have internal predecessors, (375), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 210 [2023-03-30 23:29:51,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:29:51,252 INFO L225 Difference]: With dead ends: 3212 [2023-03-30 23:29:51,252 INFO L226 Difference]: Without dead ends: 2098 [2023-03-30 23:29:51,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 425 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2023-03-30 23:29:51,256 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 947 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 2295 mSolverCounterSat, 608 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 2903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 608 IncrementalHoareTripleChecker+Valid, 2295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-03-30 23:29:51,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [947 Valid, 104 Invalid, 2903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [608 Valid, 2295 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-03-30 23:29:51,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2098 states. [2023-03-30 23:29:51,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2098 to 1502. [2023-03-30 23:29:51,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1463 states have (on average 1.2453861927546137) internal successors, (1822), 1482 states have internal predecessors, (1822), 10 states have call successors, (10), 10 states have call predecessors, (10), 28 states have return successors, (79), 9 states have call predecessors, (79), 9 states have call successors, (79) [2023-03-30 23:29:51,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 1911 transitions. [2023-03-30 23:29:51,293 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 1911 transitions. Word has length 210 [2023-03-30 23:29:51,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:29:51,294 INFO L495 AbstractCegarLoop]: Abstraction has 1502 states and 1911 transitions. [2023-03-30 23:29:51,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 31.25) internal successors, (375), 10 states have internal predecessors, (375), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-30 23:29:51,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 1911 transitions. [2023-03-30 23:29:51,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-03-30 23:29:51,301 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:29:51,301 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:29:51,309 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 23:29:51,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-03-30 23:29:51,507 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:29:51,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:29:51,507 INFO L85 PathProgramCache]: Analyzing trace with hash -257432234, now seen corresponding path program 1 times [2023-03-30 23:29:51,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:29:51,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489041600] [2023-03-30 23:29:51,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:51,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:29:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:51,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:29:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:51,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:29:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:51,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-03-30 23:29:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:51,700 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-03-30 23:29:51,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:29:51,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489041600] [2023-03-30 23:29:51,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489041600] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:29:51,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771550093] [2023-03-30 23:29:51,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:51,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:51,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:29:51,702 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:29:51,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-30 23:29:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:51,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:29:51,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:29:51,853 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-03-30 23:29:51,853 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:29:51,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771550093] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:29:51,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:29:51,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 23:29:51,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862861893] [2023-03-30 23:29:51,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:29:51,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:29:51,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:29:51,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:29:51,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:29:51,854 INFO L87 Difference]: Start difference. First operand 1502 states and 1911 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:29:52,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:29:52,377 INFO L93 Difference]: Finished difference Result 3916 states and 5081 transitions. [2023-03-30 23:29:52,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:29:52,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 239 [2023-03-30 23:29:52,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:29:52,385 INFO L225 Difference]: With dead ends: 3916 [2023-03-30 23:29:52,385 INFO L226 Difference]: Without dead ends: 2420 [2023-03-30 23:29:52,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:29:52,387 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 146 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-30 23:29:52,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 325 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-30 23:29:52,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2023-03-30 23:29:52,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 2054. [2023-03-30 23:29:52,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2054 states, 2006 states have (on average 1.2253240279162512) internal successors, (2458), 2028 states have internal predecessors, (2458), 13 states have call successors, (13), 13 states have call predecessors, (13), 34 states have return successors, (120), 12 states have call predecessors, (120), 12 states have call successors, (120) [2023-03-30 23:29:52,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 2591 transitions. [2023-03-30 23:29:52,426 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 2591 transitions. Word has length 239 [2023-03-30 23:29:52,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:29:52,426 INFO L495 AbstractCegarLoop]: Abstraction has 2054 states and 2591 transitions. [2023-03-30 23:29:52,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:29:52,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 2591 transitions. [2023-03-30 23:29:52,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-03-30 23:29:52,429 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:29:52,429 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:29:52,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-30 23:29:52,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:52,635 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:29:52,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:29:52,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1435103079, now seen corresponding path program 1 times [2023-03-30 23:29:52,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:29:52,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670305583] [2023-03-30 23:29:52,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:52,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:29:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:53,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:29:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:53,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:29:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:53,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-03-30 23:29:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:53,627 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 138 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-30 23:29:53,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:29:53,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670305583] [2023-03-30 23:29:53,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670305583] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:29:53,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349913047] [2023-03-30 23:29:53,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:53,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:53,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:29:53,630 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:29:53,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-30 23:29:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:53,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 11 conjunts are in the unsatisfiable core [2023-03-30 23:29:53,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:29:54,009 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-03-30 23:29:54,009 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:29:54,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349913047] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:29:54,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:29:54,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-03-30 23:29:54,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067026066] [2023-03-30 23:29:54,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:29:54,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:29:54,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:29:54,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:29:54,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-03-30 23:29:54,011 INFO L87 Difference]: Start difference. First operand 2054 states and 2591 transitions. Second operand has 5 states, 5 states have (on average 43.4) internal successors, (217), 4 states have internal predecessors, (217), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-30 23:29:54,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:29:54,748 INFO L93 Difference]: Finished difference Result 3748 states and 4774 transitions. [2023-03-30 23:29:54,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-30 23:29:54,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.4) internal successors, (217), 4 states have internal predecessors, (217), 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 258 [2023-03-30 23:29:54,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:29:54,754 INFO L225 Difference]: With dead ends: 3748 [2023-03-30 23:29:54,754 INFO L226 Difference]: Without dead ends: 2066 [2023-03-30 23:29:54,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-03-30 23:29:54,756 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 340 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-03-30 23:29:54,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 54 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-03-30 23:29:54,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states. [2023-03-30 23:29:54,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 2060. [2023-03-30 23:29:54,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2060 states, 2009 states have (on average 1.2200099552015928) internal successors, (2451), 2034 states have internal predecessors, (2451), 13 states have call successors, (13), 13 states have call predecessors, (13), 37 states have return successors, (119), 12 states have call predecessors, (119), 12 states have call successors, (119) [2023-03-30 23:29:54,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 2583 transitions. [2023-03-30 23:29:54,787 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 2583 transitions. Word has length 258 [2023-03-30 23:29:54,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:29:54,787 INFO L495 AbstractCegarLoop]: Abstraction has 2060 states and 2583 transitions. [2023-03-30 23:29:54,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.4) internal successors, (217), 4 states have internal predecessors, (217), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-30 23:29:54,787 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 2583 transitions. [2023-03-30 23:29:54,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2023-03-30 23:29:54,790 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:29:54,791 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:29:54,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-03-30 23:29:55,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:55,009 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:29:55,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:29:55,009 INFO L85 PathProgramCache]: Analyzing trace with hash 233035302, now seen corresponding path program 1 times [2023-03-30 23:29:55,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:29:55,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909576395] [2023-03-30 23:29:55,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:55,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:29:55,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:55,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:29:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:55,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:29:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:55,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-03-30 23:29:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:55,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-03-30 23:29:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:55,737 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 176 proven. 104 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-03-30 23:29:55,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:29:55,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909576395] [2023-03-30 23:29:55,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909576395] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:29:55,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493435815] [2023-03-30 23:29:55,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:55,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:55,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:29:55,738 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:29:55,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-03-30 23:29:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:55,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 11 conjunts are in the unsatisfiable core [2023-03-30 23:29:55,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:29:56,106 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2023-03-30 23:29:56,106 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:29:56,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493435815] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:29:56,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:29:56,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-03-30 23:29:56,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807502525] [2023-03-30 23:29:56,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:29:56,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:29:56,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:29:56,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:29:56,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-03-30 23:29:56,110 INFO L87 Difference]: Start difference. First operand 2060 states and 2583 transitions. Second operand has 5 states, 5 states have (on average 37.2) internal successors, (186), 4 states have internal predecessors, (186), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-30 23:29:56,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:29:56,864 INFO L93 Difference]: Finished difference Result 3954 states and 4992 transitions. [2023-03-30 23:29:56,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-30 23:29:56,866 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.2) internal successors, (186), 4 states have internal predecessors, (186), 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 331 [2023-03-30 23:29:56,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:29:56,872 INFO L225 Difference]: With dead ends: 3954 [2023-03-30 23:29:56,872 INFO L226 Difference]: Without dead ends: 2266 [2023-03-30 23:29:56,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-03-30 23:29:56,875 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 423 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:29:56,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 54 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-30 23:29:56,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2266 states. [2023-03-30 23:29:56,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2266 to 1878. [2023-03-30 23:29:56,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1829 states have (on average 1.2290869327501366) internal successors, (2248), 1854 states have internal predecessors, (2248), 12 states have call successors, (12), 12 states have call predecessors, (12), 36 states have return successors, (105), 11 states have call predecessors, (105), 11 states have call successors, (105) [2023-03-30 23:29:56,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2365 transitions. [2023-03-30 23:29:56,914 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2365 transitions. Word has length 331 [2023-03-30 23:29:56,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:29:56,915 INFO L495 AbstractCegarLoop]: Abstraction has 1878 states and 2365 transitions. [2023-03-30 23:29:56,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.2) internal successors, (186), 4 states have internal predecessors, (186), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-30 23:29:56,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2365 transitions. [2023-03-30 23:29:56,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2023-03-30 23:29:56,918 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:29:56,919 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:29:56,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-03-30 23:29:57,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:57,124 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:29:57,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:29:57,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1358375443, now seen corresponding path program 1 times [2023-03-30 23:29:57,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:29:57,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049344494] [2023-03-30 23:29:57,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:57,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:29:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:57,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:29:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:57,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:29:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:57,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-03-30 23:29:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:57,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-03-30 23:29:57,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:57,893 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 136 proven. 232 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-03-30 23:29:57,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:29:57,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049344494] [2023-03-30 23:29:57,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049344494] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:29:57,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784250049] [2023-03-30 23:29:57,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:57,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:57,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:29:57,909 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:29:57,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-03-30 23:29:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:58,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 15 conjunts are in the unsatisfiable core [2023-03-30 23:29:58,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:29:58,994 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 338 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-03-30 23:29:58,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:30:01,250 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 107 proven. 264 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-03-30 23:30:01,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784250049] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:30:01,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:30:01,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22 [2023-03-30 23:30:01,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978965330] [2023-03-30 23:30:01,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:30:01,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-03-30 23:30:01,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:30:01,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-03-30 23:30:01,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2023-03-30 23:30:01,254 INFO L87 Difference]: Start difference. First operand 1878 states and 2365 transitions. Second operand has 22 states, 22 states have (on average 35.68181818181818) internal successors, (785), 21 states have internal predecessors, (785), 7 states have call successors, (14), 11 states have call predecessors, (14), 10 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) [2023-03-30 23:30:04,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:30:04,806 INFO L93 Difference]: Finished difference Result 5541 states and 7302 transitions. [2023-03-30 23:30:04,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-03-30 23:30:04,806 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 35.68181818181818) internal successors, (785), 21 states have internal predecessors, (785), 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 342 [2023-03-30 23:30:04,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:30:04,815 INFO L225 Difference]: With dead ends: 5541 [2023-03-30 23:30:04,816 INFO L226 Difference]: Without dead ends: 3598 [2023-03-30 23:30:04,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 764 GetRequests, 707 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=779, Invalid=2527, Unknown=0, NotChecked=0, Total=3306 [2023-03-30 23:30:04,820 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 3558 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3413 mSolverCounterSat, 988 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3564 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 4401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 988 IncrementalHoareTripleChecker+Valid, 3413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-03-30 23:30:04,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3564 Valid, 153 Invalid, 4401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [988 Valid, 3413 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-03-30 23:30:04,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3598 states. [2023-03-30 23:30:04,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3598 to 3344. [2023-03-30 23:30:04,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3344 states, 3274 states have (on average 1.0705558949297496) internal successors, (3505), 3304 states have internal predecessors, (3505), 20 states have call successors, (20), 20 states have call predecessors, (20), 49 states have return successors, (167), 19 states have call predecessors, (167), 19 states have call successors, (167) [2023-03-30 23:30:04,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3344 states to 3344 states and 3692 transitions. [2023-03-30 23:30:04,887 INFO L78 Accepts]: Start accepts. Automaton has 3344 states and 3692 transitions. Word has length 342 [2023-03-30 23:30:04,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:30:04,887 INFO L495 AbstractCegarLoop]: Abstraction has 3344 states and 3692 transitions. [2023-03-30 23:30:04,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 35.68181818181818) internal successors, (785), 21 states have internal predecessors, (785), 7 states have call successors, (14), 11 states have call predecessors, (14), 10 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) [2023-03-30 23:30:04,888 INFO L276 IsEmpty]: Start isEmpty. Operand 3344 states and 3692 transitions. [2023-03-30 23:30:04,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2023-03-30 23:30:04,893 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:30:04,893 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:30:04,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-03-30 23:30:05,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:30:05,100 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:30:05,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:30:05,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1517091802, now seen corresponding path program 1 times [2023-03-30 23:30:05,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:30:05,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148935177] [2023-03-30 23:30:05,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:30:05,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:30:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:05,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:30:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:05,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:30:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:05,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-03-30 23:30:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:05,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-03-30 23:30:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:05,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2023-03-30 23:30:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:05,389 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 217 proven. 148 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-03-30 23:30:05,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:30:05,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148935177] [2023-03-30 23:30:05,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148935177] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:30:05,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369647722] [2023-03-30 23:30:05,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:30:05,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:30:05,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:30:05,390 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:30:05,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-03-30 23:30:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:05,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:30:05,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:30:05,622 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 506 proven. 2 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2023-03-30 23:30:05,622 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:30:05,780 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 218 proven. 150 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2023-03-30 23:30:05,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369647722] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:30:05,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:30:05,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-03-30 23:30:05,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919334] [2023-03-30 23:30:05,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:30:05,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-30 23:30:05,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:30:05,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-30 23:30:05,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:30:05,784 INFO L87 Difference]: Start difference. First operand 3344 states and 3692 transitions. Second operand has 12 states, 12 states have (on average 37.916666666666664) internal successors, (455), 10 states have internal predecessors, (455), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-03-30 23:30:07,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:30:07,152 INFO L93 Difference]: Finished difference Result 7620 states and 8618 transitions. [2023-03-30 23:30:07,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-03-30 23:30:07,152 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 37.916666666666664) internal successors, (455), 10 states have internal predecessors, (455), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 443 [2023-03-30 23:30:07,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:30:07,163 INFO L225 Difference]: With dead ends: 7620 [2023-03-30 23:30:07,163 INFO L226 Difference]: Without dead ends: 4648 [2023-03-30 23:30:07,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 928 GetRequests, 903 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2023-03-30 23:30:07,168 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 1486 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1571 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 1734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-30 23:30:07,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 82 Invalid, 1734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1571 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-30 23:30:07,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4648 states. [2023-03-30 23:30:07,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4648 to 4464. [2023-03-30 23:30:07,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4464 states, 4368 states have (on average 1.0682234432234432) internal successors, (4666), 4412 states have internal predecessors, (4666), 26 states have call successors, (26), 26 states have call predecessors, (26), 69 states have return successors, (270), 25 states have call predecessors, (270), 25 states have call successors, (270) [2023-03-30 23:30:07,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4464 states to 4464 states and 4962 transitions. [2023-03-30 23:30:07,240 INFO L78 Accepts]: Start accepts. Automaton has 4464 states and 4962 transitions. Word has length 443 [2023-03-30 23:30:07,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:30:07,240 INFO L495 AbstractCegarLoop]: Abstraction has 4464 states and 4962 transitions. [2023-03-30 23:30:07,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 37.916666666666664) internal successors, (455), 10 states have internal predecessors, (455), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-03-30 23:30:07,241 INFO L276 IsEmpty]: Start isEmpty. Operand 4464 states and 4962 transitions. [2023-03-30 23:30:07,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2023-03-30 23:30:07,250 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:30:07,250 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:30:07,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-03-30 23:30:07,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:30:07,456 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:30:07,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:30:07,456 INFO L85 PathProgramCache]: Analyzing trace with hash 601936054, now seen corresponding path program 1 times [2023-03-30 23:30:07,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:30:07,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771850226] [2023-03-30 23:30:07,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:30:07,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:30:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:08,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:30:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:08,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:30:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:08,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-30 23:30:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:08,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-03-30 23:30:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:08,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2023-03-30 23:30:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:08,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2023-03-30 23:30:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:08,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1249 backedges. 329 proven. 535 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-03-30 23:30:08,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:30:08,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771850226] [2023-03-30 23:30:08,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771850226] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:30:08,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134360032] [2023-03-30 23:30:08,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:30:08,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:30:08,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:30:08,789 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:30:08,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-03-30 23:30:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:09,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 954 conjuncts, 7 conjunts are in the unsatisfiable core [2023-03-30 23:30:09,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:30:09,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1249 backedges. 890 proven. 2 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2023-03-30 23:30:09,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:30:10,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1249 backedges. 517 proven. 105 refuted. 0 times theorem prover too weak. 627 trivial. 0 not checked. [2023-03-30 23:30:10,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134360032] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:30:10,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:30:10,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 12 [2023-03-30 23:30:10,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320019048] [2023-03-30 23:30:10,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:30:10,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-30 23:30:10,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:30:10,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-30 23:30:10,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:30:10,026 INFO L87 Difference]: Start difference. First operand 4464 states and 4962 transitions. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 10 states have internal predecessors, (609), 5 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-03-30 23:30:11,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:30:11,696 INFO L93 Difference]: Finished difference Result 9686 states and 10820 transitions. [2023-03-30 23:30:11,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-30 23:30:11,697 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 10 states have internal predecessors, (609), 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 639 [2023-03-30 23:30:11,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:30:11,710 INFO L225 Difference]: With dead ends: 9686 [2023-03-30 23:30:11,710 INFO L226 Difference]: Without dead ends: 5226 [2023-03-30 23:30:11,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1327 GetRequests, 1301 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=217, Invalid=539, Unknown=0, NotChecked=0, Total=756 [2023-03-30 23:30:11,716 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 2575 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2575 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-30 23:30:11,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2575 Valid, 49 Invalid, 1365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-30 23:30:11,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5226 states. [2023-03-30 23:30:11,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5226 to 4650. [2023-03-30 23:30:11,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4650 states, 4550 states have (on average 1.06) internal successors, (4823), 4596 states have internal predecessors, (4823), 27 states have call successors, (27), 27 states have call predecessors, (27), 72 states have return successors, (255), 26 states have call predecessors, (255), 26 states have call successors, (255) [2023-03-30 23:30:11,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4650 states to 4650 states and 5105 transitions. [2023-03-30 23:30:11,796 INFO L78 Accepts]: Start accepts. Automaton has 4650 states and 5105 transitions. Word has length 639 [2023-03-30 23:30:11,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:30:11,796 INFO L495 AbstractCegarLoop]: Abstraction has 4650 states and 5105 transitions. [2023-03-30 23:30:11,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 10 states have internal predecessors, (609), 5 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-03-30 23:30:11,797 INFO L276 IsEmpty]: Start isEmpty. Operand 4650 states and 5105 transitions. [2023-03-30 23:30:11,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 713 [2023-03-30 23:30:11,803 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:30:11,803 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:30:11,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-03-30 23:30:12,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-03-30 23:30:12,011 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:30:12,012 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:30:12,012 INFO L85 PathProgramCache]: Analyzing trace with hash 606008759, now seen corresponding path program 1 times [2023-03-30 23:30:12,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:30:12,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899902306] [2023-03-30 23:30:12,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:30:12,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:30:12,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:12,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:30:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:12,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:30:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:12,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-30 23:30:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:12,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-03-30 23:30:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:12,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2023-03-30 23:30:12,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:12,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2023-03-30 23:30:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:13,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2023-03-30 23:30:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:13,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1648 backedges. 621 proven. 116 refuted. 0 times theorem prover too weak. 911 trivial. 0 not checked. [2023-03-30 23:30:13,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:30:13,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899902306] [2023-03-30 23:30:13,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899902306] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:30:13,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511638245] [2023-03-30 23:30:13,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:30:13,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:30:13,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:30:13,105 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:30:13,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-03-30 23:30:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:13,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 7 conjunts are in the unsatisfiable core [2023-03-30 23:30:13,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:30:13,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1648 backedges. 1073 proven. 2 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2023-03-30 23:30:13,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:30:15,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1648 backedges. 631 proven. 105 refuted. 0 times theorem prover too weak. 912 trivial. 0 not checked. [2023-03-30 23:30:15,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511638245] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:30:15,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:30:15,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 16 [2023-03-30 23:30:15,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625960051] [2023-03-30 23:30:15,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:30:15,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-03-30 23:30:15,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:30:15,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-03-30 23:30:15,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-03-30 23:30:15,162 INFO L87 Difference]: Start difference. First operand 4650 states and 5105 transitions. Second operand has 16 states, 16 states have (on average 38.5625) internal successors, (617), 14 states have internal predecessors, (617), 6 states have call successors, (12), 7 states have call predecessors, (12), 8 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-03-30 23:30:18,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:30:18,369 INFO L93 Difference]: Finished difference Result 8883 states and 9846 transitions. [2023-03-30 23:30:18,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-03-30 23:30:18,370 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 38.5625) internal successors, (617), 14 states have internal predecessors, (617), 6 states have call successors, (12), 7 states have call predecessors, (12), 8 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 712 [2023-03-30 23:30:18,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:30:18,379 INFO L225 Difference]: With dead ends: 8883 [2023-03-30 23:30:18,379 INFO L226 Difference]: Without dead ends: 4357 [2023-03-30 23:30:18,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1507 GetRequests, 1453 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=685, Invalid=2285, Unknown=0, NotChecked=0, Total=2970 [2023-03-30 23:30:18,384 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 2725 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2729 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 2639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-03-30 23:30:18,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2729 Valid, 133 Invalid, 2639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-03-30 23:30:18,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4357 states. [2023-03-30 23:30:18,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4357 to 3910. [2023-03-30 23:30:18,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3910 states, 3824 states have (on average 1.0525627615062763) internal successors, (4025), 3864 states have internal predecessors, (4025), 23 states have call successors, (23), 23 states have call predecessors, (23), 62 states have return successors, (211), 22 states have call predecessors, (211), 22 states have call successors, (211) [2023-03-30 23:30:18,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3910 states to 3910 states and 4259 transitions. [2023-03-30 23:30:18,468 INFO L78 Accepts]: Start accepts. Automaton has 3910 states and 4259 transitions. Word has length 712 [2023-03-30 23:30:18,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:30:18,468 INFO L495 AbstractCegarLoop]: Abstraction has 3910 states and 4259 transitions. [2023-03-30 23:30:18,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 38.5625) internal successors, (617), 14 states have internal predecessors, (617), 6 states have call successors, (12), 7 states have call predecessors, (12), 8 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-03-30 23:30:18,469 INFO L276 IsEmpty]: Start isEmpty. Operand 3910 states and 4259 transitions. [2023-03-30 23:30:18,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 767 [2023-03-30 23:30:18,475 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:30:18,476 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:30:18,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-03-30 23:30:18,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:30:18,682 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:30:18,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:30:18,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1586606429, now seen corresponding path program 1 times [2023-03-30 23:30:18,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:30:18,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438294273] [2023-03-30 23:30:18,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:30:18,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:30:18,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:19,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:30:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:19,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:30:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:19,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-30 23:30:19,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:19,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-03-30 23:30:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:19,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2023-03-30 23:30:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:19,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2023-03-30 23:30:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:19,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2023-03-30 23:30:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:19,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1718 backedges. 752 proven. 17 refuted. 0 times theorem prover too weak. 949 trivial. 0 not checked. [2023-03-30 23:30:19,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:30:19,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438294273] [2023-03-30 23:30:19,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438294273] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:30:19,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428368427] [2023-03-30 23:30:19,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:30:19,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:30:19,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:30:19,773 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:30:19,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-03-30 23:30:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:19,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:30:19,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:30:20,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1718 backedges. 1190 proven. 2 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked. [2023-03-30 23:30:20,067 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:30:20,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1718 backedges. 460 proven. 150 refuted. 0 times theorem prover too weak. 1108 trivial. 0 not checked. [2023-03-30 23:30:20,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428368427] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:30:20,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:30:20,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 14 [2023-03-30 23:30:20,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507680009] [2023-03-30 23:30:20,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:30:20,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-03-30 23:30:20,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:30:20,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-03-30 23:30:20,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-03-30 23:30:20,279 INFO L87 Difference]: Start difference. First operand 3910 states and 4259 transitions. Second operand has 14 states, 14 states have (on average 46.5) internal successors, (651), 12 states have internal predecessors, (651), 5 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-03-30 23:30:23,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:30:23,145 INFO L93 Difference]: Finished difference Result 7994 states and 8758 transitions. [2023-03-30 23:30:23,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-03-30 23:30:23,145 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 46.5) internal successors, (651), 12 states have internal predecessors, (651), 5 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 766 [2023-03-30 23:30:23,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:30:23,152 INFO L225 Difference]: With dead ends: 7994 [2023-03-30 23:30:23,152 INFO L226 Difference]: Without dead ends: 4456 [2023-03-30 23:30:23,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1634 GetRequests, 1573 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1116 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=618, Invalid=3042, Unknown=0, NotChecked=0, Total=3660 [2023-03-30 23:30:23,156 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 6389 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 3303 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6389 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 3643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 3303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-03-30 23:30:23,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6389 Valid, 219 Invalid, 3643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 3303 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-03-30 23:30:23,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4456 states. [2023-03-30 23:30:23,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4456 to 4450. [2023-03-30 23:30:23,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4450 states, 4361 states have (on average 1.0408163265306123) internal successors, (4539), 4398 states have internal predecessors, (4539), 26 states have call successors, (26), 26 states have call predecessors, (26), 62 states have return successors, (187), 25 states have call predecessors, (187), 25 states have call successors, (187) [2023-03-30 23:30:23,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4450 states to 4450 states and 4752 transitions. [2023-03-30 23:30:23,220 INFO L78 Accepts]: Start accepts. Automaton has 4450 states and 4752 transitions. Word has length 766 [2023-03-30 23:30:23,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:30:23,220 INFO L495 AbstractCegarLoop]: Abstraction has 4450 states and 4752 transitions. [2023-03-30 23:30:23,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 46.5) internal successors, (651), 12 states have internal predecessors, (651), 5 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-03-30 23:30:23,220 INFO L276 IsEmpty]: Start isEmpty. Operand 4450 states and 4752 transitions. [2023-03-30 23:30:23,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 978 [2023-03-30 23:30:23,229 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:30:23,230 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:30:23,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-03-30 23:30:23,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-03-30 23:30:23,436 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:30:23,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:30:23,436 INFO L85 PathProgramCache]: Analyzing trace with hash -385350634, now seen corresponding path program 1 times [2023-03-30 23:30:23,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:30:23,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70236018] [2023-03-30 23:30:23,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:30:23,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:30:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:24,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:30:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:24,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:30:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:24,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-30 23:30:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:24,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-03-30 23:30:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:24,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2023-03-30 23:30:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:24,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2023-03-30 23:30:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:24,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 590 [2023-03-30 23:30:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:24,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 769 [2023-03-30 23:30:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:24,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2536 backedges. 246 proven. 28 refuted. 0 times theorem prover too weak. 2262 trivial. 0 not checked. [2023-03-30 23:30:24,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:30:24,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70236018] [2023-03-30 23:30:24,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70236018] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:30:24,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758254537] [2023-03-30 23:30:24,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:30:24,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:30:24,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:30:24,233 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:30:24,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-03-30 23:30:24,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:24,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 1366 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:30:24,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:30:24,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2536 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 2280 trivial. 0 not checked. [2023-03-30 23:30:24,546 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:30:24,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758254537] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:30:24,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:30:24,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 7 [2023-03-30 23:30:24,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398119346] [2023-03-30 23:30:24,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:30:24,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:30:24,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:30:24,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:30:24,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:30:24,547 INFO L87 Difference]: Start difference. First operand 4450 states and 4752 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:30:24,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:30:24,900 INFO L93 Difference]: Finished difference Result 8528 states and 9130 transitions. [2023-03-30 23:30:24,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:30:24,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 977 [2023-03-30 23:30:24,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:30:24,924 INFO L225 Difference]: With dead ends: 8528 [2023-03-30 23:30:24,929 INFO L226 Difference]: Without dead ends: 4450 [2023-03-30 23:30:24,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 999 GetRequests, 994 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:30:24,951 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 148 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-30 23:30:24,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 222 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-30 23:30:24,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4450 states. [2023-03-30 23:30:25,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4450 to 4268. [2023-03-30 23:30:25,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4268 states, 4181 states have (on average 1.0353982300884956) internal successors, (4329), 4218 states have internal predecessors, (4329), 25 states have call successors, (25), 25 states have call predecessors, (25), 61 states have return successors, (160), 24 states have call predecessors, (160), 24 states have call successors, (160) [2023-03-30 23:30:25,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4268 states to 4268 states and 4514 transitions. [2023-03-30 23:30:25,076 INFO L78 Accepts]: Start accepts. Automaton has 4268 states and 4514 transitions. Word has length 977 [2023-03-30 23:30:25,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:30:25,077 INFO L495 AbstractCegarLoop]: Abstraction has 4268 states and 4514 transitions. [2023-03-30 23:30:25,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:30:25,077 INFO L276 IsEmpty]: Start isEmpty. Operand 4268 states and 4514 transitions. [2023-03-30 23:30:25,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 987 [2023-03-30 23:30:25,102 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:30:25,102 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 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, 1] [2023-03-30 23:30:25,124 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 23:30:25,322 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,SelfDestructingSolverStorable12 [2023-03-30 23:30:25,323 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:30:25,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:30:25,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1610815983, now seen corresponding path program 1 times [2023-03-30 23:30:25,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:30:25,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997850923] [2023-03-30 23:30:25,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:30:25,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:30:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:25,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:30:25,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:25,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:30:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:25,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-30 23:30:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:25,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-03-30 23:30:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:26,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2023-03-30 23:30:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:26,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2023-03-30 23:30:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:26,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 590 [2023-03-30 23:30:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:26,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 769 [2023-03-30 23:30:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:26,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 848 [2023-03-30 23:30:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:26,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2966 backedges. 530 proven. 467 refuted. 0 times theorem prover too weak. 1969 trivial. 0 not checked. [2023-03-30 23:30:26,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:30:26,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997850923] [2023-03-30 23:30:26,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997850923] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:30:26,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622680391] [2023-03-30 23:30:26,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:30:26,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:30:26,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:30:26,177 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 23:30:26,208 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 23:30:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:26,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 1411 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:30:26,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:30:26,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2966 backedges. 2011 proven. 2 refuted. 0 times theorem prover too weak. 953 trivial. 0 not checked. [2023-03-30 23:30:26,599 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:30:27,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2966 backedges. 653 proven. 431 refuted. 0 times theorem prover too weak. 1882 trivial. 0 not checked. [2023-03-30 23:30:27,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622680391] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:30:27,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:30:27,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-03-30 23:30:27,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583538309] [2023-03-30 23:30:27,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:30:27,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-30 23:30:27,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:30:27,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-30 23:30:27,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-03-30 23:30:27,773 INFO L87 Difference]: Start difference. First operand 4268 states and 4514 transitions. Second operand has 11 states, 11 states have (on average 75.27272727272727) internal successors, (828), 9 states have internal predecessors, (828), 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 23:30:28,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:30:28,725 INFO L93 Difference]: Finished difference Result 9682 states and 10342 transitions. [2023-03-30 23:30:28,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-03-30 23:30:28,726 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 75.27272727272727) internal successors, (828), 9 states have internal predecessors, (828), 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 986 [2023-03-30 23:30:28,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:30:28,735 INFO L225 Difference]: With dead ends: 9682 [2023-03-30 23:30:28,735 INFO L226 Difference]: Without dead ends: 5786 [2023-03-30 23:30:28,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2017 GetRequests, 1994 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2023-03-30 23:30:28,755 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 2089 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2096 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-03-30 23:30:28,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2096 Valid, 90 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-03-30 23:30:28,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5786 states. [2023-03-30 23:30:28,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5786 to 5562. [2023-03-30 23:30:28,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5562 states, 5451 states have (on average 1.0302696752889378) internal successors, (5616), 5498 states have internal predecessors, (5616), 32 states have call successors, (32), 32 states have call predecessors, (32), 78 states have return successors, (188), 31 states have call predecessors, (188), 31 states have call successors, (188) [2023-03-30 23:30:28,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5562 states to 5562 states and 5836 transitions. [2023-03-30 23:30:28,958 INFO L78 Accepts]: Start accepts. Automaton has 5562 states and 5836 transitions. Word has length 986 [2023-03-30 23:30:28,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:30:28,958 INFO L495 AbstractCegarLoop]: Abstraction has 5562 states and 5836 transitions. [2023-03-30 23:30:28,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 75.27272727272727) internal successors, (828), 9 states have internal predecessors, (828), 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 23:30:28,959 INFO L276 IsEmpty]: Start isEmpty. Operand 5562 states and 5836 transitions. [2023-03-30 23:30:28,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 994 [2023-03-30 23:30:28,986 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:30:28,987 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 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 23:30:29,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-03-30 23:30:29,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-03-30 23:30:29,205 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:30:29,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:30:29,206 INFO L85 PathProgramCache]: Analyzing trace with hash 264675742, now seen corresponding path program 1 times [2023-03-30 23:30:29,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:30:29,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345167298] [2023-03-30 23:30:29,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:30:29,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:30:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:30,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:30:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:30,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:30:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:30,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-30 23:30:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:30,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-03-30 23:30:30,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:30,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2023-03-30 23:30:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:30,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2023-03-30 23:30:30,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:30,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2023-03-30 23:30:30,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:30,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 776 [2023-03-30 23:30:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:30,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 855 [2023-03-30 23:30:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:30,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2980 backedges. 1016 proven. 541 refuted. 0 times theorem prover too weak. 1423 trivial. 0 not checked. [2023-03-30 23:30:30,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:30:30,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345167298] [2023-03-30 23:30:30,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345167298] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:30:30,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251443441] [2023-03-30 23:30:30,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:30:30,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:30:30,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:30:30,969 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:30:30,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-03-30 23:30:31,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:31,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 1418 conjuncts, 9 conjunts are in the unsatisfiable core [2023-03-30 23:30:31,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:30:31,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2980 backedges. 1910 proven. 6 refuted. 0 times theorem prover too weak. 1064 trivial. 0 not checked. [2023-03-30 23:30:31,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:30:32,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2980 backedges. 1289 proven. 257 refuted. 0 times theorem prover too weak. 1434 trivial. 0 not checked. [2023-03-30 23:30:32,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251443441] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:30:32,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:30:32,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7, 8] total 26 [2023-03-30 23:30:32,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043036234] [2023-03-30 23:30:32,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:30:32,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-03-30 23:30:32,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:30:32,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-03-30 23:30:32,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-03-30 23:30:32,369 INFO L87 Difference]: Start difference. First operand 5562 states and 5836 transitions. Second operand has 26 states, 26 states have (on average 38.34615384615385) internal successors, (997), 24 states have internal predecessors, (997), 10 states have call successors, (16), 8 states have call predecessors, (16), 13 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2023-03-30 23:30:37,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:30:37,984 INFO L93 Difference]: Finished difference Result 11898 states and 12530 transitions. [2023-03-30 23:30:37,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-03-30 23:30:37,985 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 38.34615384615385) internal successors, (997), 24 states have internal predecessors, (997), 10 states have call successors, (16), 8 states have call predecessors, (16), 13 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) Word has length 993 [2023-03-30 23:30:37,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:30:37,995 INFO L225 Difference]: With dead ends: 11898 [2023-03-30 23:30:37,995 INFO L226 Difference]: Without dead ends: 6526 [2023-03-30 23:30:38,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2139 GetRequests, 2036 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3578 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1603, Invalid=9317, Unknown=0, NotChecked=0, Total=10920 [2023-03-30 23:30:38,004 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 5602 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 6775 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5602 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 7225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 6775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-03-30 23:30:38,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5602 Valid, 357 Invalid, 7225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 6775 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-03-30 23:30:38,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6526 states. [2023-03-30 23:30:38,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6526 to 6302. [2023-03-30 23:30:38,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6302 states, 6177 states have (on average 1.0273595596567913) internal successors, (6346), 6230 states have internal predecessors, (6346), 36 states have call successors, (36), 36 states have call predecessors, (36), 88 states have return successors, (196), 35 states have call predecessors, (196), 35 states have call successors, (196) [2023-03-30 23:30:38,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6302 states to 6302 states and 6578 transitions. [2023-03-30 23:30:38,110 INFO L78 Accepts]: Start accepts. Automaton has 6302 states and 6578 transitions. Word has length 993 [2023-03-30 23:30:38,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:30:38,111 INFO L495 AbstractCegarLoop]: Abstraction has 6302 states and 6578 transitions. [2023-03-30 23:30:38,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 38.34615384615385) internal successors, (997), 24 states have internal predecessors, (997), 10 states have call successors, (16), 8 states have call predecessors, (16), 13 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2023-03-30 23:30:38,111 INFO L276 IsEmpty]: Start isEmpty. Operand 6302 states and 6578 transitions. [2023-03-30 23:30:38,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1705 [2023-03-30 23:30:38,134 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:30:38,134 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:30:38,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-03-30 23:30:38,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-03-30 23:30:38,340 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:30:38,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:30:38,341 INFO L85 PathProgramCache]: Analyzing trace with hash -2004564589, now seen corresponding path program 1 times [2023-03-30 23:30:38,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:30:38,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069189604] [2023-03-30 23:30:38,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:30:38,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:30:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:41,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:30:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:41,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:30:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:41,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-30 23:30:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:41,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-03-30 23:30:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:41,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2023-03-30 23:30:41,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:41,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2023-03-30 23:30:41,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:41,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2023-03-30 23:30:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:41,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2023-03-30 23:30:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:41,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2023-03-30 23:30:41,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:41,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2023-03-30 23:30:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:41,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2023-03-30 23:30:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:42,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2023-03-30 23:30:42,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:42,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1410 [2023-03-30 23:30:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:42,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1537 [2023-03-30 23:30:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:42,284 INFO L134 CoverageAnalysis]: Checked inductivity of 8880 backedges. 4436 proven. 79 refuted. 0 times theorem prover too weak. 4365 trivial. 0 not checked. [2023-03-30 23:30:42,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:30:42,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069189604] [2023-03-30 23:30:42,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069189604] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:30:42,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126696294] [2023-03-30 23:30:42,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:30:42,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:30:42,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:30:42,295 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:30:42,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-03-30 23:30:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:30:42,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 2308 conjuncts, 11 conjunts are in the unsatisfiable core [2023-03-30 23:30:42,655 INFO L285 TraceCheckSpWp]: Computing forward predicates...