/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/Problem12_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 22:26:30,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 22:26:30,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 22:26:30,473 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 22:26:30,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 22:26:30,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 22:26:30,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 22:26:30,523 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 22:26:30,555 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 22:26:30,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 22:26:30,556 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 22:26:30,556 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 22:26:30,557 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 22:26:30,557 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 22:26:30,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 22:26:30,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 22:26:30,558 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 22:26:30,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 22:26:30,558 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 22:26:30,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 22:26:30,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 22:26:30,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 22:26:30,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 22:26:30,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 22:26:30,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 22:26:30,559 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 22:26:30,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 22:26:30,560 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 22:26:30,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 22:26:30,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 22:26:30,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 22:26:30,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 22:26:30,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:26:30,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 22:26:30,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 22:26:30,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 22:26:30,561 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 22:26:30,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 22:26:30,561 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 22:26:30,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 22:26:30,561 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 22:26:30,561 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 22:26:30,561 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 22:26:30,562 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 22:26:30,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 22:26:30,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 22:26:30,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 22:26:30,805 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 22:26:30,805 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 22:26:30,806 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label25.c [2023-04-01 22:26:31,876 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 22:26:32,347 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 22:26:32,347 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label25.c [2023-04-01 22:26:32,374 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a05cd2fc3/a30cd66e1f984da299c86aefd50ba727/FLAGb01ece266 [2023-04-01 22:26:32,391 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a05cd2fc3/a30cd66e1f984da299c86aefd50ba727 [2023-04-01 22:26:32,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 22:26:32,395 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 22:26:32,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 22:26:32,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 22:26:32,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 22:26:32,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:26:32" (1/1) ... [2023-04-01 22:26:32,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44f5afd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:26:32, skipping insertion in model container [2023-04-01 22:26:32,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:26:32" (1/1) ... [2023-04-01 22:26:32,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 22:26:32,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 22:26:32,727 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/Problem12_label25.c[2447,2460] [2023-04-01 22:26:33,490 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:26:33,500 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 22:26:33,522 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/Problem12_label25.c[2447,2460] [2023-04-01 22:26:33,871 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:26:33,894 INFO L208 MainTranslator]: Completed translation [2023-04-01 22:26:33,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:26:33 WrapperNode [2023-04-01 22:26:33,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 22:26:33,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 22:26:33,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 22:26:33,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 22:26:33,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:26:33" (1/1) ... [2023-04-01 22:26:33,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:26:33" (1/1) ... [2023-04-01 22:26:33,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:26:33" (1/1) ... [2023-04-01 22:26:33,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:26:33" (1/1) ... [2023-04-01 22:26:34,139 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:26:33" (1/1) ... [2023-04-01 22:26:34,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:26:33" (1/1) ... [2023-04-01 22:26:34,192 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:26:33" (1/1) ... [2023-04-01 22:26:34,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:26:33" (1/1) ... [2023-04-01 22:26:34,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 22:26:34,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 22:26:34,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 22:26:34,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 22:26:34,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:26:33" (1/1) ... [2023-04-01 22:26:34,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:26:34,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:26:34,274 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 22:26:34,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 22:26:34,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 22:26:34,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 22:26:34,317 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 22:26:34,318 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 22:26:34,318 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 22:26:34,318 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 22:26:34,318 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 22:26:34,319 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 22:26:34,319 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 22:26:34,319 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 22:26:34,322 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 22:26:34,323 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 22:26:34,323 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 22:26:34,323 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 22:26:34,323 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 22:26:34,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 22:26:34,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 22:26:34,323 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 22:26:34,323 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 22:26:34,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 22:26:34,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 22:26:34,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 22:26:34,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 22:26:34,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 22:26:34,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 22:26:34,425 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 22:26:34,427 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 22:26:38,063 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 22:26:38,082 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 22:26:38,082 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 22:26:38,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:26:38 BoogieIcfgContainer [2023-04-01 22:26:38,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 22:26:38,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 22:26:38,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 22:26:38,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 22:26:38,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:26:32" (1/3) ... [2023-04-01 22:26:38,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b43441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:26:38, skipping insertion in model container [2023-04-01 22:26:38,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:26:33" (2/3) ... [2023-04-01 22:26:38,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b43441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:26:38, skipping insertion in model container [2023-04-01 22:26:38,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:26:38" (3/3) ... [2023-04-01 22:26:38,093 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label25.c [2023-04-01 22:26:38,108 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 22:26:38,109 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 22:26:38,177 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 22:26:38,184 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;@4de82086, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 22:26:38,184 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 22:26:38,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 839 states, 825 states have (on average 1.907878787878788) internal successors, (1574), 826 states have internal predecessors, (1574), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 22:26:38,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-04-01 22:26:38,199 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:26:38,200 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] [2023-04-01 22:26:38,200 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:26:38,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:26:38,204 INFO L85 PathProgramCache]: Analyzing trace with hash -910059176, now seen corresponding path program 1 times [2023-04-01 22:26:38,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:26:38,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756553537] [2023-04-01 22:26:38,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:38,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:26:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:38,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:26:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:38,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:26:38,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:26:38,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756553537] [2023-04-01 22:26:38,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756553537] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:26:38,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:26:38,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 22:26:38,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589362975] [2023-04-01 22:26:38,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:26:38,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:26:38,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:26:38,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:26:38,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:26:38,666 INFO L87 Difference]: Start difference. First operand has 839 states, 825 states have (on average 1.907878787878788) internal successors, (1574), 826 states have internal predecessors, (1574), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 22:26:43,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:26:43,813 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2023-04-01 22:26:43,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 22:26:43,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 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 23 [2023-04-01 22:26:43,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:26:43,837 INFO L225 Difference]: With dead ends: 2471 [2023-04-01 22:26:43,837 INFO L226 Difference]: Without dead ends: 1568 [2023-04-01 22:26:43,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:26:43,850 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 3433 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3319 mSolverCounterSat, 1446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3433 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 4765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1446 IncrementalHoareTripleChecker+Valid, 3319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:26:43,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3433 Valid, 42 Invalid, 4765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1446 Valid, 3319 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-04-01 22:26:43,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2023-04-01 22:26:43,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2023-04-01 22:26:43,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1553 states, 1529 states have (on average 1.8325703073904513) internal successors, (2802), 1530 states have internal predecessors, (2802), 10 states have call successors, (10), 10 states have call predecessors, (10), 13 states have return successors, (21), 12 states have call predecessors, (21), 9 states have call successors, (21) [2023-04-01 22:26:43,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2833 transitions. [2023-04-01 22:26:43,996 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2833 transitions. Word has length 23 [2023-04-01 22:26:43,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:26:43,997 INFO L495 AbstractCegarLoop]: Abstraction has 1553 states and 2833 transitions. [2023-04-01 22:26:43,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 22:26:43,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2833 transitions. [2023-04-01 22:26:44,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-01 22:26:44,004 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:26:44,004 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 22:26:44,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 22:26:44,005 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:26:44,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:26:44,006 INFO L85 PathProgramCache]: Analyzing trace with hash -165287237, now seen corresponding path program 1 times [2023-04-01 22:26:44,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:26:44,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695006944] [2023-04-01 22:26:44,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:44,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:26:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:44,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:26:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:44,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:26:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:44,398 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:26:44,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:26:44,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695006944] [2023-04-01 22:26:44,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695006944] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:26:44,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:26:44,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:26:44,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827927584] [2023-04-01 22:26:44,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:26:44,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:26:44,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:26:44,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:26:44,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:26:44,402 INFO L87 Difference]: Start difference. First operand 1553 states and 2833 transitions. Second operand has 8 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:26:51,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:26:51,470 INFO L93 Difference]: Finished difference Result 6326 states and 11703 transitions. [2023-04-01 22:26:51,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:26:51,472 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 96 [2023-04-01 22:26:51,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:26:51,499 INFO L225 Difference]: With dead ends: 6326 [2023-04-01 22:26:51,500 INFO L226 Difference]: Without dead ends: 4779 [2023-04-01 22:26:51,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:26:51,514 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 6407 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 7566 mSolverCounterSat, 1356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6407 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 8922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1356 IncrementalHoareTripleChecker+Valid, 7566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:26:51,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6407 Valid, 187 Invalid, 8922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1356 Valid, 7566 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-04-01 22:26:51,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4779 states. [2023-04-01 22:26:51,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4779 to 4740. [2023-04-01 22:26:51,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4740 states, 4640 states have (on average 1.5734913793103449) internal successors, (7301), 4654 states have internal predecessors, (7301), 26 states have call successors, (26), 26 states have call predecessors, (26), 73 states have return successors, (255), 59 states have call predecessors, (255), 25 states have call successors, (255) [2023-04-01 22:26:51,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4740 states to 4740 states and 7582 transitions. [2023-04-01 22:26:51,708 INFO L78 Accepts]: Start accepts. Automaton has 4740 states and 7582 transitions. Word has length 96 [2023-04-01 22:26:51,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:26:51,709 INFO L495 AbstractCegarLoop]: Abstraction has 4740 states and 7582 transitions. [2023-04-01 22:26:51,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:26:51,709 INFO L276 IsEmpty]: Start isEmpty. Operand 4740 states and 7582 transitions. [2023-04-01 22:26:51,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-01 22:26:51,715 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:26:51,716 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:26:51,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 22:26:51,716 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:26:51,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:26:51,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1812126431, now seen corresponding path program 1 times [2023-04-01 22:26:51,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:26:51,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437497933] [2023-04-01 22:26:51,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:51,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:26:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:51,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:26:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:51,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:26:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:52,037 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:26:52,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:26:52,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437497933] [2023-04-01 22:26:52,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437497933] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:26:52,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240891974] [2023-04-01 22:26:52,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:52,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:52,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:26:52,045 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:26:52,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 22:26:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:52,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:26:52,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:26:52,227 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:26:52,227 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:26:52,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240891974] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:26:52,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:26:52,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-04-01 22:26:52,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211431798] [2023-04-01 22:26:52,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:26:52,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:26:52,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:26:52,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:26:52,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-04-01 22:26:52,230 INFO L87 Difference]: Start difference. First operand 4740 states and 7582 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2023-04-01 22:26:55,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:26:55,448 INFO L93 Difference]: Finished difference Result 14177 states and 23279 transitions. [2023-04-01 22:26:55,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:26:55,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 98 [2023-04-01 22:26:55,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:26:55,503 INFO L225 Difference]: With dead ends: 14177 [2023-04-01 22:26:55,503 INFO L226 Difference]: Without dead ends: 9443 [2023-04-01 22:26:55,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-04-01 22:26:55,516 INFO L413 NwaCegarLoop]: 1162 mSDtfsCounter, 763 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2400 mSolverCounterSat, 693 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 3093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 693 IncrementalHoareTripleChecker+Valid, 2400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:26:55,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 1194 Invalid, 3093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [693 Valid, 2400 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-04-01 22:26:55,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9443 states. [2023-04-01 22:26:55,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9443 to 9443. [2023-04-01 22:26:55,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9443 states, 9257 states have (on average 1.4832019012639084) internal successors, (13730), 9284 states have internal predecessors, (13730), 50 states have call successors, (50), 50 states have call predecessors, (50), 135 states have return successors, (851), 108 states have call predecessors, (851), 49 states have call successors, (851) [2023-04-01 22:26:55,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9443 states to 9443 states and 14631 transitions. [2023-04-01 22:26:55,772 INFO L78 Accepts]: Start accepts. Automaton has 9443 states and 14631 transitions. Word has length 98 [2023-04-01 22:26:55,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:26:55,774 INFO L495 AbstractCegarLoop]: Abstraction has 9443 states and 14631 transitions. [2023-04-01 22:26:55,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2023-04-01 22:26:55,775 INFO L276 IsEmpty]: Start isEmpty. Operand 9443 states and 14631 transitions. [2023-04-01 22:26:55,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-04-01 22:26:55,777 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:26:55,777 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:26:55,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 22:26:55,985 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 [2023-04-01 22:26:55,985 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:26:55,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:26:55,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1934754707, now seen corresponding path program 1 times [2023-04-01 22:26:55,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:26:55,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126702716] [2023-04-01 22:26:55,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:55,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:26:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:56,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:26:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:56,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:26:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:56,356 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:26:56,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:26:56,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126702716] [2023-04-01 22:26:56,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126702716] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:26:56,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:26:56,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 22:26:56,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408305180] [2023-04-01 22:26:56,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:26:56,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 22:26:56,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:26:56,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 22:26:56,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:26:56,360 INFO L87 Difference]: Start difference. First operand 9443 states and 14631 transitions. Second operand has 7 states, 6 states have (on average 17.0) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:27:01,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:27:01,415 INFO L93 Difference]: Finished difference Result 28090 states and 46037 transitions. [2023-04-01 22:27:01,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 22:27:01,416 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.0) internal successors, (102), 4 states have internal predecessors, (102), 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 108 [2023-04-01 22:27:01,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:27:01,512 INFO L225 Difference]: With dead ends: 28090 [2023-04-01 22:27:01,513 INFO L226 Difference]: Without dead ends: 18653 [2023-04-01 22:27:01,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:27:01,613 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 4675 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4972 mSolverCounterSat, 952 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4675 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 5924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 952 IncrementalHoareTripleChecker+Valid, 4972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:27:01,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4675 Valid, 117 Invalid, 5924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [952 Valid, 4972 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-04-01 22:27:01,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18653 states. [2023-04-01 22:27:01,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18653 to 16910. [2023-04-01 22:27:02,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16910 states, 16438 states have (on average 1.3982236281786105) internal successors, (22984), 16543 states have internal predecessors, (22984), 86 states have call successors, (86), 86 states have call predecessors, (86), 385 states have return successors, (2603), 280 states have call predecessors, (2603), 85 states have call successors, (2603) [2023-04-01 22:27:02,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16910 states to 16910 states and 25673 transitions. [2023-04-01 22:27:02,072 INFO L78 Accepts]: Start accepts. Automaton has 16910 states and 25673 transitions. Word has length 108 [2023-04-01 22:27:02,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:27:02,074 INFO L495 AbstractCegarLoop]: Abstraction has 16910 states and 25673 transitions. [2023-04-01 22:27:02,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.0) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:27:02,075 INFO L276 IsEmpty]: Start isEmpty. Operand 16910 states and 25673 transitions. [2023-04-01 22:27:02,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-01 22:27:02,080 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:27:02,080 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:27:02,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 22:27:02,081 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:27:02,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:27:02,085 INFO L85 PathProgramCache]: Analyzing trace with hash 907189643, now seen corresponding path program 1 times [2023-04-01 22:27:02,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:27:02,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373578054] [2023-04-01 22:27:02,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:02,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:27:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:02,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:27:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:02,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:27:02,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:02,405 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:27:02,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:27:02,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373578054] [2023-04-01 22:27:02,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373578054] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:27:02,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:27:02,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:27:02,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459427916] [2023-04-01 22:27:02,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:27:02,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:27:02,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:27:02,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:27:02,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:27:02,408 INFO L87 Difference]: Start difference. First operand 16910 states and 25673 transitions. Second operand has 8 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:27:09,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:27:09,473 INFO L93 Difference]: Finished difference Result 53123 states and 83331 transitions. [2023-04-01 22:27:09,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:27:09,473 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 136 [2023-04-01 22:27:09,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:27:09,608 INFO L225 Difference]: With dead ends: 53123 [2023-04-01 22:27:09,608 INFO L226 Difference]: Without dead ends: 36219 [2023-04-01 22:27:09,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:27:09,657 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 4280 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 6423 mSolverCounterSat, 1794 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4280 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 8217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1794 IncrementalHoareTripleChecker+Valid, 6423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:27:09,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4280 Valid, 152 Invalid, 8217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1794 Valid, 6423 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-04-01 22:27:09,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36219 states. [2023-04-01 22:27:10,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36219 to 31516. [2023-04-01 22:27:10,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31516 states, 30595 states have (on average 1.247818270959307) internal successors, (38177), 30815 states have internal predecessors, (38177), 158 states have call successors, (158), 158 states have call predecessors, (158), 762 states have return successors, (5632), 542 states have call predecessors, (5632), 157 states have call successors, (5632) [2023-04-01 22:27:10,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31516 states to 31516 states and 43967 transitions. [2023-04-01 22:27:10,495 INFO L78 Accepts]: Start accepts. Automaton has 31516 states and 43967 transitions. Word has length 136 [2023-04-01 22:27:10,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:27:10,495 INFO L495 AbstractCegarLoop]: Abstraction has 31516 states and 43967 transitions. [2023-04-01 22:27:10,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:27:10,495 INFO L276 IsEmpty]: Start isEmpty. Operand 31516 states and 43967 transitions. [2023-04-01 22:27:10,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-04-01 22:27:10,499 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:27:10,499 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:27:10,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 22:27:10,499 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:27:10,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:27:10,500 INFO L85 PathProgramCache]: Analyzing trace with hash -750223033, now seen corresponding path program 1 times [2023-04-01 22:27:10,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:27:10,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059322399] [2023-04-01 22:27:10,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:10,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:27:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:10,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:27:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:10,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:27:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:10,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-01 22:27:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:10,836 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 32 proven. 84 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 22:27:10,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:27:10,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059322399] [2023-04-01 22:27:10,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059322399] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:27:10,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678708523] [2023-04-01 22:27:10,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:10,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:27:10,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:27:10,841 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:27:10,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 22:27:10,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:10,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 22:27:10,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:27:11,129 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-04-01 22:27:11,129 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:27:11,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678708523] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:27:11,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:27:11,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2023-04-01 22:27:11,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358738608] [2023-04-01 22:27:11,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:27:11,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:27:11,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:27:11,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:27:11,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-04-01 22:27:11,132 INFO L87 Difference]: Start difference. First operand 31516 states and 43967 transitions. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 4 states have internal predecessors, (191), 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) [2023-04-01 22:27:14,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:27:14,921 INFO L93 Difference]: Finished difference Result 63629 states and 92084 transitions. [2023-04-01 22:27:14,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 22:27:14,922 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 4 states have internal predecessors, (191), 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 214 [2023-04-01 22:27:14,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:27:15,030 INFO L225 Difference]: With dead ends: 63629 [2023-04-01 22:27:15,030 INFO L226 Difference]: Without dead ends: 32119 [2023-04-01 22:27:15,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:27:15,070 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 2248 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 4024 mSolverCounterSat, 911 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2248 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 4935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 911 IncrementalHoareTripleChecker+Valid, 4024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:27:15,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2248 Valid, 112 Invalid, 4935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [911 Valid, 4024 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-04-01 22:27:15,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32119 states. [2023-04-01 22:27:15,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32119 to 31847. [2023-04-01 22:27:15,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31847 states, 30795 states have (on average 1.2280889754830329) internal successors, (37819), 31077 states have internal predecessors, (37819), 158 states have call successors, (158), 158 states have call predecessors, (158), 893 states have return successors, (6270), 611 states have call predecessors, (6270), 157 states have call successors, (6270) [2023-04-01 22:27:15,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31847 states to 31847 states and 44247 transitions. [2023-04-01 22:27:15,914 INFO L78 Accepts]: Start accepts. Automaton has 31847 states and 44247 transitions. Word has length 214 [2023-04-01 22:27:15,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:27:15,914 INFO L495 AbstractCegarLoop]: Abstraction has 31847 states and 44247 transitions. [2023-04-01 22:27:15,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 4 states have internal predecessors, (191), 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) [2023-04-01 22:27:15,914 INFO L276 IsEmpty]: Start isEmpty. Operand 31847 states and 44247 transitions. [2023-04-01 22:27:15,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-04-01 22:27:15,919 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:27:15,919 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:27:15,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 22:27:16,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-04-01 22:27:16,126 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:27:16,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:27:16,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1587198296, now seen corresponding path program 1 times [2023-04-01 22:27:16,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:27:16,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323486495] [2023-04-01 22:27:16,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:16,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:27:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:16,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:27:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:16,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:27:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:16,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-04-01 22:27:16,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:16,657 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 32 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 22:27:16,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:27:16,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323486495] [2023-04-01 22:27:16,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323486495] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:27:16,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88918304] [2023-04-01 22:27:16,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:16,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:27:16,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:27:16,659 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:27:16,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 22:27:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:16,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 22:27:16,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:27:16,956 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-04-01 22:27:16,956 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:27:16,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88918304] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:27:16,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:27:16,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2023-04-01 22:27:16,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486352380] [2023-04-01 22:27:16,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:27:16,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:27:16,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:27:16,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:27:16,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:27:16,958 INFO L87 Difference]: Start difference. First operand 31847 states and 44247 transitions. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 4 states have internal predecessors, (194), 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) [2023-04-01 22:27:21,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:27:21,982 INFO L93 Difference]: Finished difference Result 91044 states and 130941 transitions. [2023-04-01 22:27:21,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 22:27:21,983 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 4 states have internal predecessors, (194), 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 217 [2023-04-01 22:27:21,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:27:22,154 INFO L225 Difference]: With dead ends: 91044 [2023-04-01 22:27:22,154 INFO L226 Difference]: Without dead ends: 59203 [2023-04-01 22:27:22,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:27:22,194 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 2239 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 5075 mSolverCounterSat, 1000 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2239 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 6075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1000 IncrementalHoareTripleChecker+Valid, 5075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:27:22,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2239 Valid, 138 Invalid, 6075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1000 Valid, 5075 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-04-01 22:27:22,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59203 states. [2023-04-01 22:27:23,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59203 to 58978. [2023-04-01 22:27:23,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58978 states, 57239 states have (on average 1.1610440433969846) internal successors, (66457), 57713 states have internal predecessors, (66457), 294 states have call successors, (294), 294 states have call predecessors, (294), 1444 states have return successors, (11662), 970 states have call predecessors, (11662), 293 states have call successors, (11662) [2023-04-01 22:27:23,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58978 states to 58978 states and 78413 transitions. [2023-04-01 22:27:23,964 INFO L78 Accepts]: Start accepts. Automaton has 58978 states and 78413 transitions. Word has length 217 [2023-04-01 22:27:23,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:27:23,981 INFO L495 AbstractCegarLoop]: Abstraction has 58978 states and 78413 transitions. [2023-04-01 22:27:23,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 4 states have internal predecessors, (194), 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) [2023-04-01 22:27:23,981 INFO L276 IsEmpty]: Start isEmpty. Operand 58978 states and 78413 transitions. [2023-04-01 22:27:23,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-04-01 22:27:23,984 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:27:23,984 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:27:24,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 22:27:24,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:27:24,190 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:27:24,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:27:24,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1248546579, now seen corresponding path program 1 times [2023-04-01 22:27:24,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:27:24,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26956067] [2023-04-01 22:27:24,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:24,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:27:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:24,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:27:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:24,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:27:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:24,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:27:24,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:24,578 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-04-01 22:27:24,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:27:24,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26956067] [2023-04-01 22:27:24,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26956067] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:27:24,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788315731] [2023-04-01 22:27:24,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:24,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:27:24,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:27:24,580 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:27:24,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 22:27:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:24,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:27:24,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:27:24,727 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-04-01 22:27:24,727 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:27:24,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788315731] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:27:24,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:27:24,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:27:24,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645482318] [2023-04-01 22:27:24,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:27:24,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:27:24,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:27:24,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:27:24,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:27:24,729 INFO L87 Difference]: Start difference. First operand 58978 states and 78413 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:27:28,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:27:28,354 INFO L93 Difference]: Finished difference Result 144338 states and 195922 transitions. [2023-04-01 22:27:28,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:27:28,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 244 [2023-04-01 22:27:28,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:27:28,703 INFO L225 Difference]: With dead ends: 144338 [2023-04-01 22:27:28,703 INFO L226 Difference]: Without dead ends: 85366 [2023-04-01 22:27:28,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:27:28,760 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 816 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 2294 mSolverCounterSat, 925 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 3219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 925 IncrementalHoareTripleChecker+Valid, 2294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:27:28,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 150 Invalid, 3219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [925 Valid, 2294 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-04-01 22:27:28,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85366 states. [2023-04-01 22:27:30,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85366 to 79178. [2023-04-01 22:27:30,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79178 states, 77126 states have (on average 1.1707076731582087) internal successors, (90292), 77657 states have internal predecessors, (90292), 398 states have call successors, (398), 398 states have call predecessors, (398), 1653 states have return successors, (17996), 1122 states have call predecessors, (17996), 397 states have call successors, (17996) [2023-04-01 22:27:30,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79178 states to 79178 states and 108686 transitions. [2023-04-01 22:27:30,703 INFO L78 Accepts]: Start accepts. Automaton has 79178 states and 108686 transitions. Word has length 244 [2023-04-01 22:27:30,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:27:30,704 INFO L495 AbstractCegarLoop]: Abstraction has 79178 states and 108686 transitions. [2023-04-01 22:27:30,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:27:30,704 INFO L276 IsEmpty]: Start isEmpty. Operand 79178 states and 108686 transitions. [2023-04-01 22:27:30,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2023-04-01 22:27:30,710 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:27:30,711 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:27:30,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 22:27:30,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:27:30,916 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:27:30,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:27:30,917 INFO L85 PathProgramCache]: Analyzing trace with hash -818997064, now seen corresponding path program 1 times [2023-04-01 22:27:30,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:27:30,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911292877] [2023-04-01 22:27:30,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:30,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:27:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:31,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:27:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:31,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:27:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:31,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:27:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:31,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-04-01 22:27:31,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:31,347 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 51 proven. 3 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-04-01 22:27:31,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:27:31,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911292877] [2023-04-01 22:27:31,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911292877] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:27:31,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730118598] [2023-04-01 22:27:31,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:31,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:27:31,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:27:31,349 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:27:31,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 22:27:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:31,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:27:31,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:27:31,561 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-04-01 22:27:31,561 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:27:31,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730118598] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:27:31,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:27:31,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:27:31,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085045540] [2023-04-01 22:27:31,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:27:31,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:27:31,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:27:31,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:27:31,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:27:31,564 INFO L87 Difference]: Start difference. First operand 79178 states and 108686 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:27:34,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:27:34,996 INFO L93 Difference]: Finished difference Result 177582 states and 248334 transitions. [2023-04-01 22:27:34,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:27:34,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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 329 [2023-04-01 22:27:34,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:27:35,400 INFO L225 Difference]: With dead ends: 177582 [2023-04-01 22:27:35,400 INFO L226 Difference]: Without dead ends: 98410 [2023-04-01 22:27:35,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 336 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:27:35,466 INFO L413 NwaCegarLoop]: 1150 mSDtfsCounter, 869 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2282 mSolverCounterSat, 577 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 577 IncrementalHoareTripleChecker+Valid, 2282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:27:35,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 1182 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [577 Valid, 2282 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-01 22:27:35,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98410 states. [2023-04-01 22:27:37,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98410 to 92262. [2023-04-01 22:27:37,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92262 states, 90055 states have (on average 1.1630781189273223) internal successors, (104741), 90598 states have internal predecessors, (104741), 466 states have call successors, (466), 466 states have call predecessors, (466), 1740 states have return successors, (20524), 1197 states have call predecessors, (20524), 465 states have call successors, (20524) [2023-04-01 22:27:37,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92262 states to 92262 states and 125731 transitions. [2023-04-01 22:27:37,362 INFO L78 Accepts]: Start accepts. Automaton has 92262 states and 125731 transitions. Word has length 329 [2023-04-01 22:27:37,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:27:37,363 INFO L495 AbstractCegarLoop]: Abstraction has 92262 states and 125731 transitions. [2023-04-01 22:27:37,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:27:37,363 INFO L276 IsEmpty]: Start isEmpty. Operand 92262 states and 125731 transitions. [2023-04-01 22:27:37,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2023-04-01 22:27:37,389 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:27:37,389 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:27:37,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 22:27:37,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:27:37,595 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:27:37,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:27:37,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1033845916, now seen corresponding path program 1 times [2023-04-01 22:27:37,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:27:37,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136760524] [2023-04-01 22:27:37,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:37,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:27:37,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:38,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:27:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:38,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:27:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:38,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:27:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:38,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-04-01 22:27:38,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:38,498 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 268 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-01 22:27:38,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:27:38,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136760524] [2023-04-01 22:27:38,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136760524] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:27:38,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551346127] [2023-04-01 22:27:38,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:38,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:27:38,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:27:38,500 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:27:38,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 22:27:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:38,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:27:38,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:27:39,004 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 270 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-04-01 22:27:39,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:27:39,653 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 270 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-04-01 22:27:39,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551346127] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:27:39,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:27:39,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:27:39,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347561845] [2023-04-01 22:27:39,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:27:39,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:27:39,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:27:39,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:27:39,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:27:39,658 INFO L87 Difference]: Start difference. First operand 92262 states and 125731 transitions. Second operand has 11 states, 11 states have (on average 73.36363636363636) internal successors, (807), 9 states have internal predecessors, (807), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 22:27:50,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:27:50,039 INFO L93 Difference]: Finished difference Result 219668 states and 311134 transitions. [2023-04-01 22:27:50,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-01 22:27:50,040 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 73.36363636363636) internal successors, (807), 9 states have internal predecessors, (807), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 459 [2023-04-01 22:27:50,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:27:50,544 INFO L225 Difference]: With dead ends: 219668 [2023-04-01 22:27:50,544 INFO L226 Difference]: Without dead ends: 123490 [2023-04-01 22:27:50,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 950 GetRequests, 929 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 22:27:50,634 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 4911 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 12854 mSolverCounterSat, 2069 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4917 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 14923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2069 IncrementalHoareTripleChecker+Valid, 12854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:27:50,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4917 Valid, 230 Invalid, 14923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2069 Valid, 12854 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2023-04-01 22:27:50,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123490 states. [2023-04-01 22:27:52,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123490 to 114656. [2023-04-01 22:27:52,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114656 states, 111928 states have (on average 1.108516188978629) internal successors, (124074), 112549 states have internal predecessors, (124074), 683 states have call successors, (683), 578 states have call predecessors, (683), 2044 states have return successors, (23786), 1528 states have call predecessors, (23786), 682 states have call successors, (23786) [2023-04-01 22:27:53,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114656 states to 114656 states and 148543 transitions. [2023-04-01 22:27:53,336 INFO L78 Accepts]: Start accepts. Automaton has 114656 states and 148543 transitions. Word has length 459 [2023-04-01 22:27:53,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:27:53,337 INFO L495 AbstractCegarLoop]: Abstraction has 114656 states and 148543 transitions. [2023-04-01 22:27:53,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 73.36363636363636) internal successors, (807), 9 states have internal predecessors, (807), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 22:27:53,337 INFO L276 IsEmpty]: Start isEmpty. Operand 114656 states and 148543 transitions. [2023-04-01 22:27:53,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2023-04-01 22:27:53,403 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:27:53,403 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:27:53,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-04-01 22:27:53,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:27:53,610 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:27:53,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:27:53,611 INFO L85 PathProgramCache]: Analyzing trace with hash 2085620938, now seen corresponding path program 1 times [2023-04-01 22:27:53,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:27:53,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111512770] [2023-04-01 22:27:53,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:53,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:27:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:54,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:27:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:54,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:27:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:54,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-01 22:27:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:55,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-04-01 22:27:55,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:55,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:27:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:55,851 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 56 proven. 283 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-01 22:27:55,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:27:55,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111512770] [2023-04-01 22:27:55,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111512770] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:27:55,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211904462] [2023-04-01 22:27:55,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:55,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:27:55,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:27:55,853 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:27:55,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 22:27:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:56,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 971 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 22:27:56,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:27:56,738 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 272 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-01 22:27:56,738 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:27:58,008 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 272 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-01 22:27:58,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211904462] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:27:58,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:27:58,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 18 [2023-04-01 22:27:58,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787478582] [2023-04-01 22:27:58,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:27:58,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-01 22:27:58,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:27:58,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-01 22:27:58,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-04-01 22:27:58,013 INFO L87 Difference]: Start difference. First operand 114656 states and 148543 transitions. Second operand has 18 states, 18 states have (on average 83.11111111111111) internal successors, (1496), 16 states have internal predecessors, (1496), 7 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) [2023-04-01 22:28:15,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:28:15,021 INFO L93 Difference]: Finished difference Result 255210 states and 335202 transitions. [2023-04-01 22:28:15,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-04-01 22:28:15,022 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 83.11111111111111) internal successors, (1496), 16 states have internal predecessors, (1496), 7 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) Word has length 669 [2023-04-01 22:28:15,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:28:15,585 INFO L225 Difference]: With dead ends: 255210 [2023-04-01 22:28:15,585 INFO L226 Difference]: Without dead ends: 140201 [2023-04-01 22:28:15,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1490 GetRequests, 1398 SyntacticMatches, 3 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2863 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1374, Invalid=6816, Unknown=0, NotChecked=0, Total=8190 [2023-04-01 22:28:15,689 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 19904 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 15650 mSolverCounterSat, 4406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19912 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 20056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4406 IncrementalHoareTripleChecker+Valid, 15650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2023-04-01 22:28:15,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19912 Valid, 863 Invalid, 20056 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4406 Valid, 15650 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2023-04-01 22:28:15,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140201 states. [2023-04-01 22:28:17,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140201 to 137186. [2023-04-01 22:28:17,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137186 states, 134122 states have (on average 1.086838848212821) internal successors, (145769), 134789 states have internal predecessors, (145769), 820 states have call successors, (820), 694 states have call predecessors, (820), 2243 states have return successors, (24932), 1702 states have call predecessors, (24932), 819 states have call successors, (24932) [2023-04-01 22:28:18,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137186 states to 137186 states and 171521 transitions. [2023-04-01 22:28:18,416 INFO L78 Accepts]: Start accepts. Automaton has 137186 states and 171521 transitions. Word has length 669 [2023-04-01 22:28:18,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:28:18,417 INFO L495 AbstractCegarLoop]: Abstraction has 137186 states and 171521 transitions. [2023-04-01 22:28:18,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 83.11111111111111) internal successors, (1496), 16 states have internal predecessors, (1496), 7 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) [2023-04-01 22:28:18,417 INFO L276 IsEmpty]: Start isEmpty. Operand 137186 states and 171521 transitions. [2023-04-01 22:28:18,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2023-04-01 22:28:18,519 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:28:18,519 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:28:18,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 22:28:18,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:28:18,727 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:28:18,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:28:18,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1311996770, now seen corresponding path program 1 times [2023-04-01 22:28:18,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:28:18,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028655486] [2023-04-01 22:28:18,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:28:18,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:28:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:19,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:28:19,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:20,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:28:20,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:20,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:28:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:20,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2023-04-01 22:28:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:20,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:28:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:20,547 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 54 proven. 3 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2023-04-01 22:28:20,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:28:20,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028655486] [2023-04-01 22:28:20,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028655486] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:28:20,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346145461] [2023-04-01 22:28:20,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:28:20,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:28:20,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:28:20,549 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:28:20,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 22:28:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:20,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 1112 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:28:20,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:28:20,860 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 467 trivial. 0 not checked. [2023-04-01 22:28:20,860 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:28:20,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346145461] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:28:20,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:28:20,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-04-01 22:28:20,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010761119] [2023-04-01 22:28:20,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:28:20,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:28:20,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:28:20,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:28:20,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:28:20,863 INFO L87 Difference]: Start difference. First operand 137186 states and 171521 transitions. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 22:28:25,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:28:25,670 INFO L93 Difference]: Finished difference Result 330053 states and 418524 transitions. [2023-04-01 22:28:25,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:28:25,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 811 [2023-04-01 22:28:25,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:28:26,382 INFO L225 Difference]: With dead ends: 330053 [2023-04-01 22:28:26,383 INFO L226 Difference]: Without dead ends: 193640 [2023-04-01 22:28:26,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 822 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:28:26,505 INFO L413 NwaCegarLoop]: 1308 mSDtfsCounter, 760 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 2813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 503 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:28:26,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 1340 Invalid, 2813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [503 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-01 22:28:26,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193640 states. [2023-04-01 22:28:29,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193640 to 183610. [2023-04-01 22:28:29,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183610 states, 179926 states have (on average 1.0760423729755566) internal successors, (193608), 180648 states have internal predecessors, (193608), 1099 states have call successors, (1099), 934 states have call predecessors, (1099), 2584 states have return successors, (30757), 2027 states have call predecessors, (30757), 1098 states have call successors, (30757) [2023-04-01 22:28:30,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183610 states to 183610 states and 225464 transitions. [2023-04-01 22:28:30,412 INFO L78 Accepts]: Start accepts. Automaton has 183610 states and 225464 transitions. Word has length 811 [2023-04-01 22:28:30,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:28:30,413 INFO L495 AbstractCegarLoop]: Abstraction has 183610 states and 225464 transitions. [2023-04-01 22:28:30,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 22:28:30,414 INFO L276 IsEmpty]: Start isEmpty. Operand 183610 states and 225464 transitions. [2023-04-01 22:28:30,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1052 [2023-04-01 22:28:30,558 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:28:30,558 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:28:30,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-01 22:28:30,764 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,SelfDestructingSolverStorable11 [2023-04-01 22:28:30,765 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:28:30,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:28:30,766 INFO L85 PathProgramCache]: Analyzing trace with hash -853343524, now seen corresponding path program 1 times [2023-04-01 22:28:30,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:28:30,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133230784] [2023-04-01 22:28:30,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:28:30,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:28:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:31,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:28:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:32,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:28:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:32,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-01 22:28:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:32,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2023-04-01 22:28:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:32,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:28:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:33,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:28:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:33,715 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 340 proven. 2 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-04-01 22:28:33,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:28:33,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133230784] [2023-04-01 22:28:33,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133230784] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:28:33,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941833856] [2023-04-01 22:28:33,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:28:33,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:28:33,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:28:33,719 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:28:33,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 22:28:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:34,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 22:28:34,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:28:34,923 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 342 proven. 2 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-04-01 22:28:34,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:28:36,891 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 342 proven. 2 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-04-01 22:28:36,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941833856] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:28:36,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:28:36,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:28:36,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930043596] [2023-04-01 22:28:36,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:28:36,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:28:36,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:28:36,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:28:36,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:28:36,897 INFO L87 Difference]: Start difference. First operand 183610 states and 225464 transitions. Second operand has 11 states, 11 states have (on average 213.72727272727272) internal successors, (2351), 9 states have internal predecessors, (2351), 7 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-04-01 22:28:46,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:28:46,285 INFO L93 Difference]: Finished difference Result 386328 states and 477116 transitions. [2023-04-01 22:28:46,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-01 22:28:46,286 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 213.72727272727272) internal successors, (2351), 9 states have internal predecessors, (2351), 7 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 1051 [2023-04-01 22:28:46,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:28:47,095 INFO L225 Difference]: With dead ends: 386328 [2023-04-01 22:28:47,095 INFO L226 Difference]: Without dead ends: 203491 [2023-04-01 22:28:47,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2140 GetRequests, 2117 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 22:28:47,255 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 3548 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 12486 mSolverCounterSat, 1452 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3550 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 13938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1452 IncrementalHoareTripleChecker+Valid, 12486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:28:47,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3550 Valid, 233 Invalid, 13938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1452 Valid, 12486 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-04-01 22:28:47,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203491 states. [2023-04-01 22:28:50,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203491 to 203070. [2023-04-01 22:28:51,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203070 states, 199073 states have (on average 1.0620727069969307) internal successors, (211430), 199849 states have internal predecessors, (211430), 1199 states have call successors, (1199), 1034 states have call predecessors, (1199), 2797 states have return successors, (27794), 2186 states have call predecessors, (27794), 1198 states have call successors, (27794) [2023-04-01 22:28:52,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203070 states to 203070 states and 240423 transitions. [2023-04-01 22:28:52,093 INFO L78 Accepts]: Start accepts. Automaton has 203070 states and 240423 transitions. Word has length 1051 [2023-04-01 22:28:52,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:28:52,094 INFO L495 AbstractCegarLoop]: Abstraction has 203070 states and 240423 transitions. [2023-04-01 22:28:52,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 213.72727272727272) internal successors, (2351), 9 states have internal predecessors, (2351), 7 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-04-01 22:28:52,096 INFO L276 IsEmpty]: Start isEmpty. Operand 203070 states and 240423 transitions. [2023-04-01 22:28:52,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 948 [2023-04-01 22:28:52,249 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:28:52,250 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:28:52,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-01 22:28:52,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-01 22:28:52,457 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:28:52,458 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:28:52,459 INFO L85 PathProgramCache]: Analyzing trace with hash -574084530, now seen corresponding path program 1 times [2023-04-01 22:28:52,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:28:52,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503419059] [2023-04-01 22:28:52,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:28:52,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:28:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:53,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:28:53,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:53,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:28:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:53,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:28:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:53,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2023-04-01 22:28:53,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:53,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2023-04-01 22:28:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:53,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:28:53,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:53,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1028 backedges. 217 proven. 330 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2023-04-01 22:28:53,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:28:53,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503419059] [2023-04-01 22:28:53,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503419059] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:28:53,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451685370] [2023-04-01 22:28:53,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:28:53,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:28:53,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:28:53,900 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:28:53,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-01 22:28:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:54,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 1292 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:28:54,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:28:54,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1028 backedges. 806 proven. 2 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-04-01 22:28:54,369 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:28:54,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1028 backedges. 218 proven. 332 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked. [2023-04-01 22:28:54,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451685370] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:28:54,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:28:54,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:28:54,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987072523] [2023-04-01 22:28:54,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:28:54,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:28:54,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:28:54,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:28:54,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:28:54,759 INFO L87 Difference]: Start difference. First operand 203070 states and 240423 transitions. Second operand has 11 states, 11 states have (on average 122.0) internal successors, (1342), 9 states have internal predecessors, (1342), 4 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 22:29:05,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:29:05,302 INFO L93 Difference]: Finished difference Result 408085 states and 484821 transitions. [2023-04-01 22:29:05,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-01 22:29:05,303 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 122.0) internal successors, (1342), 9 states have internal predecessors, (1342), 4 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 947 [2023-04-01 22:29:05,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:29:06,105 INFO L225 Difference]: With dead ends: 408085 [2023-04-01 22:29:06,106 INFO L226 Difference]: Without dead ends: 205788 [2023-04-01 22:29:06,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1936 GetRequests, 1912 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2023-04-01 22:29:06,296 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 4297 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 11950 mSolverCounterSat, 1780 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4301 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 13730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1780 IncrementalHoareTripleChecker+Valid, 11950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:29:06,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4301 Valid, 252 Invalid, 13730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1780 Valid, 11950 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-04-01 22:29:06,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205788 states. [2023-04-01 22:29:09,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205788 to 181471. [2023-04-01 22:29:09,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181471 states, 177735 states have (on average 1.0404422314119335) internal successors, (184923), 178504 states have internal predecessors, (184923), 1068 states have call successors, (1068), 922 states have call predecessors, (1068), 2667 states have return successors, (16633), 2044 states have call predecessors, (16633), 1067 states have call successors, (16633) [2023-04-01 22:29:09,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181471 states to 181471 states and 202624 transitions. [2023-04-01 22:29:09,894 INFO L78 Accepts]: Start accepts. Automaton has 181471 states and 202624 transitions. Word has length 947 [2023-04-01 22:29:09,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:29:09,894 INFO L495 AbstractCegarLoop]: Abstraction has 181471 states and 202624 transitions. [2023-04-01 22:29:09,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 122.0) internal successors, (1342), 9 states have internal predecessors, (1342), 4 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 22:29:09,895 INFO L276 IsEmpty]: Start isEmpty. Operand 181471 states and 202624 transitions. [2023-04-01 22:29:09,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1048 [2023-04-01 22:29:09,998 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:29:09,999 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:29:10,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-01 22:29:10,207 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,SelfDestructingSolverStorable13 [2023-04-01 22:29:10,207 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:29:10,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:29:10,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1143914322, now seen corresponding path program 1 times [2023-04-01 22:29:10,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:29:10,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737377880] [2023-04-01 22:29:10,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:29:10,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:29:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:11,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:29:11,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:11,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:29:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:11,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-01 22:29:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:11,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2023-04-01 22:29:11,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:11,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2023-04-01 22:29:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:11,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2023-04-01 22:29:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:11,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:29:11,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:11,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1447 backedges. 87 proven. 5 refuted. 0 times theorem prover too weak. 1355 trivial. 0 not checked. [2023-04-01 22:29:11,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:29:11,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737377880] [2023-04-01 22:29:11,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737377880] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:29:11,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487169374] [2023-04-01 22:29:11,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:29:11,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:29:11,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:29:11,895 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:29:11,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-01 22:29:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:12,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 1439 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 22:29:12,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:29:12,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1447 backedges. 1125 proven. 2 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2023-04-01 22:29:12,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:29:15,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1447 backedges. 345 proven. 332 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2023-04-01 22:29:15,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487169374] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:29:15,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:29:15,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-04-01 22:29:15,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434420048] [2023-04-01 22:29:15,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:29:15,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 22:29:15,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:29:15,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 22:29:15,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-04-01 22:29:15,907 INFO L87 Difference]: Start difference. First operand 181471 states and 202624 transitions. Second operand has 10 states, 10 states have (on average 120.4) internal successors, (1204), 8 states have internal predecessors, (1204), 5 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2023-04-01 22:29:31,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:29:31,608 INFO L93 Difference]: Finished difference Result 475924 states and 539675 transitions. [2023-04-01 22:29:31,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-04-01 22:29:31,609 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 120.4) internal successors, (1204), 8 states have internal predecessors, (1204), 5 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 1047 [2023-04-01 22:29:31,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:29:32,468 INFO L225 Difference]: With dead ends: 475924 [2023-04-01 22:29:32,468 INFO L226 Difference]: Without dead ends: 295226 [2023-04-01 22:29:32,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2159 GetRequests, 2127 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=258, Invalid=798, Unknown=0, NotChecked=0, Total=1056 [2023-04-01 22:29:32,815 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 8270 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 16630 mSolverCounterSat, 2474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8270 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 19104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2474 IncrementalHoareTripleChecker+Valid, 16630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:29:32,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8270 Valid, 349 Invalid, 19104 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2474 Valid, 16630 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2023-04-01 22:29:33,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295226 states. [2023-04-01 22:29:37,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295226 to 287837. [2023-04-01 22:29:37,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287837 states, 282542 states have (on average 1.0373289634815355) internal successors, (293089), 283499 states have internal predecessors, (293089), 1702 states have call successors, (1702), 1470 states have call predecessors, (1702), 3592 states have return successors, (26781), 2867 states have call predecessors, (26781), 1701 states have call successors, (26781) [2023-04-01 22:29:38,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287837 states to 287837 states and 321572 transitions. [2023-04-01 22:29:38,446 INFO L78 Accepts]: Start accepts. Automaton has 287837 states and 321572 transitions. Word has length 1047 [2023-04-01 22:29:38,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:29:38,446 INFO L495 AbstractCegarLoop]: Abstraction has 287837 states and 321572 transitions. [2023-04-01 22:29:38,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.4) internal successors, (1204), 8 states have internal predecessors, (1204), 5 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2023-04-01 22:29:38,447 INFO L276 IsEmpty]: Start isEmpty. Operand 287837 states and 321572 transitions. [2023-04-01 22:29:38,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1305 [2023-04-01 22:29:38,606 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:29:38,607 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:29:38,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-04-01 22:29:38,813 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,SelfDestructingSolverStorable14 [2023-04-01 22:29:38,814 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:29:38,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:29:38,814 INFO L85 PathProgramCache]: Analyzing trace with hash 317069720, now seen corresponding path program 1 times [2023-04-01 22:29:38,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:29:38,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699438971] [2023-04-01 22:29:38,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:29:38,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:29:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:40,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:29:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:40,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:29:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:41,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-01 22:29:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:41,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 22:29:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:41,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:29:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:41,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2023-04-01 22:29:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:41,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:29:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:41,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:29:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:41,964 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 294 proven. 326 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2023-04-01 22:29:41,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:29:41,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699438971] [2023-04-01 22:29:41,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699438971] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:29:41,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998331035] [2023-04-01 22:29:41,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:29:41,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:29:41,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:29:41,966 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:29:41,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-04-01 22:29:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:42,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 1699 conjuncts, 16 conjunts are in the unsatisfiable core [2023-04-01 22:29:42,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:29:43,205 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 822 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-04-01 22:29:43,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:29:50,754 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 301 proven. 318 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2023-04-01 22:29:50,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998331035] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:29:50,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:29:50,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 6] total 15 [2023-04-01 22:29:50,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5274303] [2023-04-01 22:29:50,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:29:50,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 22:29:50,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:29:50,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 22:29:50,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2023-04-01 22:29:50,760 INFO L87 Difference]: Start difference. First operand 287837 states and 321572 transitions. Second operand has 15 states, 15 states have (on average 161.2) internal successors, (2418), 13 states have internal predecessors, (2418), 9 states have call successors, (21), 7 states have call predecessors, (21), 8 states have return successors, (18), 8 states have call predecessors, (18), 9 states have call successors, (18)