/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/Problem15_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-30 23:34:08,394 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-30 23:34:08,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-30 23:34:08,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-30 23:34:08,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-30 23:34:08,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-30 23:34:08,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-30 23:34:08,483 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-30 23:34:08,511 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-30 23:34:08,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-30 23:34:08,512 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-30 23:34:08,512 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-30 23:34:08,513 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-30 23:34:08,513 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-30 23:34:08,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-30 23:34:08,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-30 23:34:08,514 INFO L138 SettingsManager]: * Use SBE=true [2023-03-30 23:34:08,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-30 23:34:08,515 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-30 23:34:08,515 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-30 23:34:08,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-30 23:34:08,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-30 23:34:08,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-30 23:34:08,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-30 23:34:08,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-30 23:34:08,516 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-30 23:34:08,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-30 23:34:08,516 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-30 23:34:08,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-30 23:34:08,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-30 23:34:08,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-30 23:34:08,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-30 23:34:08,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:34:08,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-30 23:34:08,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-30 23:34:08,517 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-30 23:34:08,518 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-30 23:34:08,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-30 23:34:08,518 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-30 23:34:08,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-30 23:34:08,518 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-30 23:34:08,518 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-30 23:34:08,518 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-30 23:34:08,519 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-30 23:34:08,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-30 23:34:08,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-30 23:34:08,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-30 23:34:08,758 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-30 23:34:08,758 INFO L275 PluginConnector]: CDTParser initialized [2023-03-30 23:34:08,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem15_label54.c [2023-03-30 23:34:09,932 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-30 23:34:10,305 INFO L351 CDTParser]: Found 1 translation units. [2023-03-30 23:34:10,305 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label54.c [2023-03-30 23:34:10,324 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c63c3cdb/5cc70ae1b5b043dcaf5d5586b8f278dd/FLAGd4c2f9d3c [2023-03-30 23:34:10,339 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c63c3cdb/5cc70ae1b5b043dcaf5d5586b8f278dd [2023-03-30 23:34:10,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-30 23:34:10,343 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-30 23:34:10,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-30 23:34:10,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-30 23:34:10,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-30 23:34:10,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:34:10" (1/1) ... [2023-03-30 23:34:10,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aff96be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:34:10, skipping insertion in model container [2023-03-30 23:34:10,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:34:10" (1/1) ... [2023-03-30 23:34:10,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-30 23:34:10,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-30 23:34:10,629 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/Problem15_label54.c[4982,4995] [2023-03-30 23:34:11,066 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:34:11,079 INFO L203 MainTranslator]: Completed pre-run [2023-03-30 23:34:11,110 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/Problem15_label54.c[4982,4995] [2023-03-30 23:34:11,282 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:34:11,297 INFO L208 MainTranslator]: Completed translation [2023-03-30 23:34:11,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:34:11 WrapperNode [2023-03-30 23:34:11,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-30 23:34:11,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-30 23:34:11,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-30 23:34:11,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-30 23:34:11,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:34:11" (1/1) ... [2023-03-30 23:34:11,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:34:11" (1/1) ... [2023-03-30 23:34:11,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:34:11" (1/1) ... [2023-03-30 23:34:11,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:34:11" (1/1) ... [2023-03-30 23:34:11,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:34:11" (1/1) ... [2023-03-30 23:34:11,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:34:11" (1/1) ... [2023-03-30 23:34:11,463 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:34:11" (1/1) ... [2023-03-30 23:34:11,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:34:11" (1/1) ... [2023-03-30 23:34:11,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-30 23:34:11,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-30 23:34:11,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-30 23:34:11,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-30 23:34:11,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:34:11" (1/1) ... [2023-03-30 23:34:11,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:34:11,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:34:11,522 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-30 23:34:11,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-30 23:34:11,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-30 23:34:11,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-30 23:34:11,570 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-30 23:34:11,570 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-03-30 23:34:11,570 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-03-30 23:34:11,570 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-30 23:34:11,570 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-03-30 23:34:11,570 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-03-30 23:34:11,571 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-30 23:34:11,571 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-30 23:34:11,571 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-30 23:34:11,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-30 23:34:11,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-30 23:34:11,571 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-30 23:34:11,571 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-30 23:34:11,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-30 23:34:11,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-30 23:34:11,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-30 23:34:11,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-30 23:34:11,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-30 23:34:11,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-30 23:34:11,648 INFO L236 CfgBuilder]: Building ICFG [2023-03-30 23:34:11,651 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-30 23:34:14,166 INFO L277 CfgBuilder]: Performing block encoding [2023-03-30 23:34:14,181 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-30 23:34:14,182 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-30 23:34:14,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:34:14 BoogieIcfgContainer [2023-03-30 23:34:14,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-30 23:34:14,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-30 23:34:14,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-30 23:34:14,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-30 23:34:14,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 11:34:10" (1/3) ... [2023-03-30 23:34:14,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@725967aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:34:14, skipping insertion in model container [2023-03-30 23:34:14,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:34:11" (2/3) ... [2023-03-30 23:34:14,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@725967aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:34:14, skipping insertion in model container [2023-03-30 23:34:14,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:34:14" (3/3) ... [2023-03-30 23:34:14,192 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label54.c [2023-03-30 23:34:14,209 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-30 23:34:14,209 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-30 23:34:14,279 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-30 23:34:14,286 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;@27bc0ba8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-30 23:34:14,286 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-30 23:34:14,295 INFO L276 IsEmpty]: Start isEmpty. Operand has 437 states, 427 states have (on average 1.7681498829039812) internal successors, (755), 428 states have internal predecessors, (755), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 23:34:14,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-03-30 23:34:14,304 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:34:14,304 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:34:14,305 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:34:14,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:34:14,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1032640785, now seen corresponding path program 1 times [2023-03-30 23:34:14,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:34:14,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430579921] [2023-03-30 23:34:14,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:14,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:34:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:14,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:34:14,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:14,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:34:14,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:34:14,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430579921] [2023-03-30 23:34:14,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430579921] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:34:14,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:34:14,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-30 23:34:14,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945421856] [2023-03-30 23:34:14,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:34:14,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-30 23:34:14,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:34:14,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-30 23:34:14,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-30 23:34:14,831 INFO L87 Difference]: Start difference. First operand has 437 states, 427 states have (on average 1.7681498829039812) internal successors, (755), 428 states have internal predecessors, (755), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:34:17,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:34:17,823 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2023-03-30 23:34:17,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-30 23:34:17,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 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 46 [2023-03-30 23:34:17,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:34:17,849 INFO L225 Difference]: With dead ends: 1199 [2023-03-30 23:34:17,849 INFO L226 Difference]: Without dead ends: 697 [2023-03-30 23:34:17,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:34:17,862 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 996 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1623 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 1889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 1623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-03-30 23:34:17,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 84 Invalid, 1889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 1623 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-03-30 23:34:17,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2023-03-30 23:34:17,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2023-03-30 23:34:17,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 676 states have (on average 1.4718934911242603) internal successors, (995), 678 states have internal predecessors, (995), 6 states have call successors, (6), 6 states have call predecessors, (6), 8 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2023-03-30 23:34:17,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2023-03-30 23:34:17,942 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 46 [2023-03-30 23:34:17,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:34:17,942 INFO L495 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2023-03-30 23:34:17,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:34:17,943 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2023-03-30 23:34:17,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-03-30 23:34:17,947 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:34:17,947 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-03-30 23:34:17,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-30 23:34:17,948 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:34:17,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:34:17,948 INFO L85 PathProgramCache]: Analyzing trace with hash 16525442, now seen corresponding path program 1 times [2023-03-30 23:34:17,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:34:17,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206516724] [2023-03-30 23:34:17,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:17,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:34:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:18,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:34:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:18,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:34:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:18,256 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:34:18,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:34:18,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206516724] [2023-03-30 23:34:18,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206516724] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:34:18,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479078007] [2023-03-30 23:34:18,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:18,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:34:18,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:34:18,269 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:34:18,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-30 23:34:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:18,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:34:18,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:34:18,567 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:34:18,567 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:34:18,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479078007] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:34:18,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:34:18,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 23:34:18,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365946184] [2023-03-30 23:34:18,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:34:18,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:34:18,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:34:18,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:34:18,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:34:18,571 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-30 23:34:20,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:34:20,277 INFO L93 Difference]: Finished difference Result 2004 states and 2952 transitions. [2023-03-30 23:34:20,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:34:20,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 115 [2023-03-30 23:34:20,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:34:20,286 INFO L225 Difference]: With dead ends: 2004 [2023-03-30 23:34:20,286 INFO L226 Difference]: Without dead ends: 1319 [2023-03-30 23:34:20,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:34:20,296 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 296 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:34:20,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 339 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-03-30 23:34:20,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2023-03-30 23:34:20,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1317. [2023-03-30 23:34:20,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1317 states, 1291 states have (on average 1.2982184353214563) internal successors, (1676), 1295 states have internal predecessors, (1676), 10 states have call successors, (10), 10 states have call predecessors, (10), 15 states have return successors, (24), 11 states have call predecessors, (24), 9 states have call successors, (24) [2023-03-30 23:34:20,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1710 transitions. [2023-03-30 23:34:20,362 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1710 transitions. Word has length 115 [2023-03-30 23:34:20,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:34:20,364 INFO L495 AbstractCegarLoop]: Abstraction has 1317 states and 1710 transitions. [2023-03-30 23:34:20,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-30 23:34:20,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1710 transitions. [2023-03-30 23:34:20,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-03-30 23:34:20,378 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:34:20,378 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:34:20,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-30 23:34:20,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:34:20,588 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:34:20,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:34:20,589 INFO L85 PathProgramCache]: Analyzing trace with hash 39119960, now seen corresponding path program 1 times [2023-03-30 23:34:20,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:34:20,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346639031] [2023-03-30 23:34:20,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:20,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:34:20,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:21,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:34:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:21,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:34:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:21,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-03-30 23:34:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:21,292 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-03-30 23:34:21,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:34:21,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346639031] [2023-03-30 23:34:21,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346639031] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:34:21,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062629236] [2023-03-30 23:34:21,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:21,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:34:21,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:34:21,301 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:34:21,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-30 23:34:21,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:21,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 8 conjunts are in the unsatisfiable core [2023-03-30 23:34:21,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:34:21,726 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-03-30 23:34:21,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:34:21,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062629236] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:34:21,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:34:21,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-03-30 23:34:21,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878287402] [2023-03-30 23:34:21,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:34:21,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:34:21,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:34:21,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:34:21,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-03-30 23:34:21,730 INFO L87 Difference]: Start difference. First operand 1317 states and 1710 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-03-30 23:34:24,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:34:24,134 INFO L93 Difference]: Finished difference Result 3608 states and 4796 transitions. [2023-03-30 23:34:24,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-30 23:34:24,135 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 220 [2023-03-30 23:34:24,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:34:24,145 INFO L225 Difference]: With dead ends: 3608 [2023-03-30 23:34:24,145 INFO L226 Difference]: Without dead ends: 2297 [2023-03-30 23:34:24,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-03-30 23:34:24,149 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 1052 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 1502 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 2008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 1502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-03-30 23:34:24,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 209 Invalid, 2008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [506 Valid, 1502 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-03-30 23:34:24,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2023-03-30 23:34:24,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 2272. [2023-03-30 23:34:24,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2272 states, 2224 states have (on average 1.2279676258992807) internal successors, (2731), 2235 states have internal predecessors, (2731), 16 states have call successors, (16), 16 states have call predecessors, (16), 31 states have return successors, (59), 20 states have call predecessors, (59), 15 states have call successors, (59) [2023-03-30 23:34:24,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2272 states to 2272 states and 2806 transitions. [2023-03-30 23:34:24,206 INFO L78 Accepts]: Start accepts. Automaton has 2272 states and 2806 transitions. Word has length 220 [2023-03-30 23:34:24,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:34:24,207 INFO L495 AbstractCegarLoop]: Abstraction has 2272 states and 2806 transitions. [2023-03-30 23:34:24,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-03-30 23:34:24,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2272 states and 2806 transitions. [2023-03-30 23:34:24,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2023-03-30 23:34:24,211 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:34:24,211 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:34:24,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-30 23:34:24,417 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,SelfDestructingSolverStorable2 [2023-03-30 23:34:24,418 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:34:24,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:34:24,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1474544438, now seen corresponding path program 1 times [2023-03-30 23:34:24,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:34:24,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729723749] [2023-03-30 23:34:24,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:24,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:34:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:25,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:34:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:25,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:34:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:25,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-03-30 23:34:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:25,695 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 114 proven. 39 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-03-30 23:34:25,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:34:25,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729723749] [2023-03-30 23:34:25,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729723749] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:34:25,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259236003] [2023-03-30 23:34:25,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:25,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:34:25,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:34:25,704 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:34:25,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-30 23:34:25,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:25,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 16 conjunts are in the unsatisfiable core [2023-03-30 23:34:25,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:34:26,538 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-03-30 23:34:26,538 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:34:26,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259236003] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:34:26,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:34:26,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-03-30 23:34:26,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100510722] [2023-03-30 23:34:26,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:34:26,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:34:26,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:34:26,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:34:26,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:34:26,542 INFO L87 Difference]: Start difference. First operand 2272 states and 2806 transitions. Second operand has 5 states, 5 states have (on average 56.0) internal successors, (280), 4 states have internal predecessors, (280), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-30 23:34:28,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:34:28,812 INFO L93 Difference]: Finished difference Result 4896 states and 6011 transitions. [2023-03-30 23:34:28,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-30 23:34:28,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 56.0) internal successors, (280), 4 states have internal predecessors, (280), 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 326 [2023-03-30 23:34:28,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:34:28,830 INFO L225 Difference]: With dead ends: 4896 [2023-03-30 23:34:28,830 INFO L226 Difference]: Without dead ends: 2630 [2023-03-30 23:34:28,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-03-30 23:34:28,835 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 605 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 1895 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 2025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-03-30 23:34:28,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 179 Invalid, 2025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1895 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-03-30 23:34:28,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2023-03-30 23:34:28,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 2599. [2023-03-30 23:34:28,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2599 states, 2538 states have (on average 1.2017336485421592) internal successors, (3050), 2556 states have internal predecessors, (3050), 18 states have call successors, (18), 18 states have call predecessors, (18), 42 states have return successors, (85), 24 states have call predecessors, (85), 17 states have call successors, (85) [2023-03-30 23:34:28,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2599 states to 2599 states and 3153 transitions. [2023-03-30 23:34:28,899 INFO L78 Accepts]: Start accepts. Automaton has 2599 states and 3153 transitions. Word has length 326 [2023-03-30 23:34:28,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:34:28,899 INFO L495 AbstractCegarLoop]: Abstraction has 2599 states and 3153 transitions. [2023-03-30 23:34:28,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.0) internal successors, (280), 4 states have internal predecessors, (280), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-30 23:34:28,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2599 states and 3153 transitions. [2023-03-30 23:34:28,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2023-03-30 23:34:28,904 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:34:28,904 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:34:28,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-30 23:34:29,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:34:29,111 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:34:29,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:34:29,111 INFO L85 PathProgramCache]: Analyzing trace with hash 206344213, now seen corresponding path program 1 times [2023-03-30 23:34:29,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:34:29,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811816330] [2023-03-30 23:34:29,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:29,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:34:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:29,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:34:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:29,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:34:29,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:29,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-03-30 23:34:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:29,573 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-03-30 23:34:29,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:34:29,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811816330] [2023-03-30 23:34:29,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811816330] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:34:29,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708389320] [2023-03-30 23:34:29,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:29,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:34:29,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:34:29,575 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:34:29,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-30 23:34:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:29,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:34:29,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:34:29,775 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-03-30 23:34:29,776 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:34:29,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708389320] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:34:29,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:34:29,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 23:34:29,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703285058] [2023-03-30 23:34:29,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:34:29,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:34:29,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:34:29,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:34:29,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:34:29,778 INFO L87 Difference]: Start difference. First operand 2599 states and 3153 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:34:31,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:34:31,213 INFO L93 Difference]: Finished difference Result 6134 states and 7743 transitions. [2023-03-30 23:34:31,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:34:31,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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 341 [2023-03-30 23:34:31,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:34:31,233 INFO L225 Difference]: With dead ends: 6134 [2023-03-30 23:34:31,233 INFO L226 Difference]: Without dead ends: 3848 [2023-03-30 23:34:31,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 346 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:34:31,238 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 337 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 1192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-03-30 23:34:31,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 221 Invalid, 1192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-03-30 23:34:31,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3848 states. [2023-03-30 23:34:31,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3848 to 3848. [2023-03-30 23:34:31,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3848 states, 3762 states have (on average 1.1977671451355663) internal successors, (4506), 3788 states have internal predecessors, (4506), 26 states have call successors, (26), 26 states have call predecessors, (26), 59 states have return successors, (167), 33 states have call predecessors, (167), 25 states have call successors, (167) [2023-03-30 23:34:31,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3848 states to 3848 states and 4699 transitions. [2023-03-30 23:34:31,336 INFO L78 Accepts]: Start accepts. Automaton has 3848 states and 4699 transitions. Word has length 341 [2023-03-30 23:34:31,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:34:31,337 INFO L495 AbstractCegarLoop]: Abstraction has 3848 states and 4699 transitions. [2023-03-30 23:34:31,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:34:31,337 INFO L276 IsEmpty]: Start isEmpty. Operand 3848 states and 4699 transitions. [2023-03-30 23:34:31,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2023-03-30 23:34:31,346 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:34:31,346 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:34:31,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-03-30 23:34:31,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:34:31,552 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:34:31,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:34:31,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1649106033, now seen corresponding path program 1 times [2023-03-30 23:34:31,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:34:31,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778674583] [2023-03-30 23:34:31,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:31,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:34:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:32,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:34:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:32,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:34:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:32,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-03-30 23:34:32,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:32,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2023-03-30 23:34:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:32,277 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 123 proven. 3 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2023-03-30 23:34:32,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:34:32,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778674583] [2023-03-30 23:34:32,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778674583] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:34:32,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267373460] [2023-03-30 23:34:32,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:32,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:34:32,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:34:32,281 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:34:32,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-03-30 23:34:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:32,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:34:32,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:34:32,551 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-03-30 23:34:32,551 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:34:32,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267373460] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:34:32,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:34:32,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 23:34:32,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065892754] [2023-03-30 23:34:32,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:34:32,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:34:32,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:34:32,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:34:32,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:34:32,553 INFO L87 Difference]: Start difference. First operand 3848 states and 4699 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:34:34,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:34:34,125 INFO L93 Difference]: Finished difference Result 8629 states and 10848 transitions. [2023-03-30 23:34:34,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:34:34,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 509 [2023-03-30 23:34:34,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:34:34,147 INFO L225 Difference]: With dead ends: 8629 [2023-03-30 23:34:34,148 INFO L226 Difference]: Without dead ends: 5094 [2023-03-30 23:34:34,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 517 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:34:34,156 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 296 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-03-30 23:34:34,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 646 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-03-30 23:34:34,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5094 states. [2023-03-30 23:34:34,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5094 to 5094. [2023-03-30 23:34:34,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5094 states, 4985 states have (on average 1.1707121364092277) internal successors, (5836), 5018 states have internal predecessors, (5836), 34 states have call successors, (34), 34 states have call predecessors, (34), 74 states have return successors, (249), 41 states have call predecessors, (249), 33 states have call successors, (249) [2023-03-30 23:34:34,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5094 states to 5094 states and 6119 transitions. [2023-03-30 23:34:34,276 INFO L78 Accepts]: Start accepts. Automaton has 5094 states and 6119 transitions. Word has length 509 [2023-03-30 23:34:34,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:34:34,277 INFO L495 AbstractCegarLoop]: Abstraction has 5094 states and 6119 transitions. [2023-03-30 23:34:34,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:34:34,277 INFO L276 IsEmpty]: Start isEmpty. Operand 5094 states and 6119 transitions. [2023-03-30 23:34:34,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-03-30 23:34:34,287 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:34:34,287 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:34:34,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-03-30 23:34:34,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:34:34,494 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:34:34,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:34:34,495 INFO L85 PathProgramCache]: Analyzing trace with hash 454292177, now seen corresponding path program 1 times [2023-03-30 23:34:34,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:34:34,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516336100] [2023-03-30 23:34:34,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:34,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:34:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:34,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:34:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:35,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:34:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:35,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-03-30 23:34:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:35,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2023-03-30 23:34:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:35,330 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 318 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-03-30 23:34:35,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:34:35,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516336100] [2023-03-30 23:34:35,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516336100] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:34:35,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243028718] [2023-03-30 23:34:35,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:35,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:34:35,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:34:35,332 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:34:35,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-03-30 23:34:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:35,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 5 conjunts are in the unsatisfiable core [2023-03-30 23:34:35,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:34:35,632 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2023-03-30 23:34:35,632 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:34:35,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243028718] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:34:35,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:34:35,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-03-30 23:34:35,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305017180] [2023-03-30 23:34:35,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:34:35,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:34:35,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:34:35,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:34:35,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:34:35,636 INFO L87 Difference]: Start difference. First operand 5094 states and 6119 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:34:37,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:34:37,549 INFO L93 Difference]: Finished difference Result 13315 states and 16433 transitions. [2023-03-30 23:34:37,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:34:37,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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 532 [2023-03-30 23:34:37,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:34:37,600 INFO L225 Difference]: With dead ends: 13315 [2023-03-30 23:34:37,600 INFO L226 Difference]: Without dead ends: 8534 [2023-03-30 23:34:37,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 538 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:34:37,613 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 289 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-03-30 23:34:37,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 683 Invalid, 1234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-03-30 23:34:37,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8534 states. [2023-03-30 23:34:37,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8534 to 8525. [2023-03-30 23:34:37,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8525 states, 8353 states have (on average 1.1434215252005269) internal successors, (9551), 8402 states have internal predecessors, (9551), 56 states have call successors, (56), 56 states have call predecessors, (56), 115 states have return successors, (491), 66 states have call predecessors, (491), 55 states have call successors, (491) [2023-03-30 23:34:37,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8525 states to 8525 states and 10098 transitions. [2023-03-30 23:34:37,902 INFO L78 Accepts]: Start accepts. Automaton has 8525 states and 10098 transitions. Word has length 532 [2023-03-30 23:34:37,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:34:37,903 INFO L495 AbstractCegarLoop]: Abstraction has 8525 states and 10098 transitions. [2023-03-30 23:34:37,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:34:37,903 INFO L276 IsEmpty]: Start isEmpty. Operand 8525 states and 10098 transitions. [2023-03-30 23:34:37,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2023-03-30 23:34:37,917 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:34:37,918 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:34:37,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-03-30 23:34:38,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:34:38,125 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:34:38,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:34:38,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1431843957, now seen corresponding path program 1 times [2023-03-30 23:34:38,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:34:38,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32103718] [2023-03-30 23:34:38,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:38,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:34:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:38,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:34:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:38,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:34:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:38,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-03-30 23:34:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:38,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2023-03-30 23:34:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:38,839 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 123 proven. 3 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2023-03-30 23:34:38,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:34:38,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32103718] [2023-03-30 23:34:38,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32103718] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:34:38,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385580535] [2023-03-30 23:34:38,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:38,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:34:38,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:34:38,841 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:34:38,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-03-30 23:34:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:39,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:34:39,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:34:39,107 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2023-03-30 23:34:39,107 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:34:39,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385580535] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:34:39,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:34:39,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-03-30 23:34:39,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036158826] [2023-03-30 23:34:39,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:34:39,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:34:39,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:34:39,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:34:39,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:34:39,111 INFO L87 Difference]: Start difference. First operand 8525 states and 10098 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:34:40,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:34:40,798 INFO L93 Difference]: Finished difference Result 19213 states and 23207 transitions. [2023-03-30 23:34:40,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:34:40,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 534 [2023-03-30 23:34:40,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:34:40,870 INFO L225 Difference]: With dead ends: 19213 [2023-03-30 23:34:40,871 INFO L226 Difference]: Without dead ends: 11001 [2023-03-30 23:34:40,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 542 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:34:40,884 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 281 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:34:40,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 339 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-03-30 23:34:40,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11001 states. [2023-03-30 23:34:41,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11001 to 10387. [2023-03-30 23:34:41,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10387 states, 10181 states have (on average 1.1359394951380022) internal successors, (11565), 10240 states have internal predecessors, (11565), 68 states have call successors, (68), 68 states have call predecessors, (68), 137 states have return successors, (590), 78 states have call predecessors, (590), 67 states have call successors, (590) [2023-03-30 23:34:41,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10387 states to 10387 states and 12223 transitions. [2023-03-30 23:34:41,107 INFO L78 Accepts]: Start accepts. Automaton has 10387 states and 12223 transitions. Word has length 534 [2023-03-30 23:34:41,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:34:41,108 INFO L495 AbstractCegarLoop]: Abstraction has 10387 states and 12223 transitions. [2023-03-30 23:34:41,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:34:41,109 INFO L276 IsEmpty]: Start isEmpty. Operand 10387 states and 12223 transitions. [2023-03-30 23:34:41,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2023-03-30 23:34:41,118 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:34:41,119 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-03-30 23:34:41,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-03-30 23:34:41,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:34:41,326 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:34:41,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:34:41,326 INFO L85 PathProgramCache]: Analyzing trace with hash 716367117, now seen corresponding path program 1 times [2023-03-30 23:34:41,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:34:41,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275151884] [2023-03-30 23:34:41,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:41,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:34:41,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:41,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:34:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:41,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:34:41,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:41,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-03-30 23:34:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:41,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2023-03-30 23:34:41,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:41,989 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-03-30 23:34:41,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:34:41,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275151884] [2023-03-30 23:34:41,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275151884] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:34:41,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376545342] [2023-03-30 23:34:41,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:41,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:34:41,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:34:41,993 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:34:42,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-03-30 23:34:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:42,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:34:42,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:34:42,385 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 351 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-03-30 23:34:42,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:34:42,757 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 351 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-03-30 23:34:42,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376545342] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:34:42,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:34:42,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-03-30 23:34:42,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716527612] [2023-03-30 23:34:42,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:34:42,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-30 23:34:42,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:34:42,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-30 23:34:42,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-03-30 23:34:42,761 INFO L87 Difference]: Start difference. First operand 10387 states and 12223 transitions. Second operand has 11 states, 11 states have (on average 61.90909090909091) internal successors, (681), 9 states have internal predecessors, (681), 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) [2023-03-30 23:34:47,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:34:47,496 INFO L93 Difference]: Finished difference Result 23155 states and 27629 transitions. [2023-03-30 23:34:47,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-03-30 23:34:47,497 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 61.90909090909091) internal successors, (681), 9 states have internal predecessors, (681), 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 555 [2023-03-30 23:34:47,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:34:47,540 INFO L225 Difference]: With dead ends: 23155 [2023-03-30 23:34:47,540 INFO L226 Difference]: Without dead ends: 13081 [2023-03-30 23:34:47,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1152 GetRequests, 1126 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=175, Invalid=475, Unknown=0, NotChecked=0, Total=650 [2023-03-30 23:34:47,563 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 1765 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 5814 mSolverCounterSat, 567 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1772 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 6381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 5814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-03-30 23:34:47,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1772 Valid, 307 Invalid, 6381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [567 Valid, 5814 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-03-30 23:34:47,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13081 states. [2023-03-30 23:34:47,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13081 to 12370. [2023-03-30 23:34:47,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12370 states, 12077 states have (on average 1.1049929618282686) internal successors, (13345), 12194 states have internal predecessors, (13345), 80 states have call successors, (80), 80 states have call predecessors, (80), 212 states have return successors, (708), 95 states have call predecessors, (708), 79 states have call successors, (708) [2023-03-30 23:34:47,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12370 states to 12370 states and 14133 transitions. [2023-03-30 23:34:47,839 INFO L78 Accepts]: Start accepts. Automaton has 12370 states and 14133 transitions. Word has length 555 [2023-03-30 23:34:47,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:34:47,840 INFO L495 AbstractCegarLoop]: Abstraction has 12370 states and 14133 transitions. [2023-03-30 23:34:47,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 61.90909090909091) internal successors, (681), 9 states have internal predecessors, (681), 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) [2023-03-30 23:34:47,840 INFO L276 IsEmpty]: Start isEmpty. Operand 12370 states and 14133 transitions. [2023-03-30 23:34:47,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2023-03-30 23:34:47,849 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:34:47,849 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-03-30 23:34:47,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-03-30 23:34:48,058 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,SelfDestructingSolverStorable8 [2023-03-30 23:34:48,059 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:34:48,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:34:48,059 INFO L85 PathProgramCache]: Analyzing trace with hash -707802354, now seen corresponding path program 1 times [2023-03-30 23:34:48,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:34:48,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308941335] [2023-03-30 23:34:48,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:48,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:34:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:48,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:34:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:48,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:34:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:48,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-03-30 23:34:48,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:48,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2023-03-30 23:34:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:48,863 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 355 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-03-30 23:34:48,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:34:48,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308941335] [2023-03-30 23:34:48,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308941335] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:34:48,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138326216] [2023-03-30 23:34:48,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:48,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:34:48,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:34:48,865 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:34:48,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-03-30 23:34:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:49,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 8 conjunts are in the unsatisfiable core [2023-03-30 23:34:49,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:34:50,113 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 317 proven. 42 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-03-30 23:34:50,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:34:50,579 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2023-03-30 23:34:50,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138326216] provided 1 perfect and 1 imperfect interpolant sequences [2023-03-30 23:34:50,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-03-30 23:34:50,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 12 [2023-03-30 23:34:50,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104155809] [2023-03-30 23:34:50,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:34:50,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:34:50,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:34:50,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:34:50,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:34:50,582 INFO L87 Difference]: Start difference. First operand 12370 states and 14133 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:34:52,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:34:52,387 INFO L93 Difference]: Finished difference Result 30678 states and 35623 transitions. [2023-03-30 23:34:52,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:34:52,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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 559 [2023-03-30 23:34:52,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:34:52,455 INFO L225 Difference]: With dead ends: 30678 [2023-03-30 23:34:52,455 INFO L226 Difference]: Without dead ends: 18621 [2023-03-30 23:34:52,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1130 GetRequests, 1119 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:34:52,481 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 319 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:34:52,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 256 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 954 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-03-30 23:34:52,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18621 states. [2023-03-30 23:34:52,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18621 to 17066. [2023-03-30 23:34:52,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17066 states, 16668 states have (on average 1.1066114710823134) internal successors, (18445), 16828 states have internal predecessors, (18445), 110 states have call successors, (110), 110 states have call predecessors, (110), 287 states have return successors, (1217), 127 states have call predecessors, (1217), 109 states have call successors, (1217) [2023-03-30 23:34:52,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17066 states to 17066 states and 19772 transitions. [2023-03-30 23:34:52,855 INFO L78 Accepts]: Start accepts. Automaton has 17066 states and 19772 transitions. Word has length 559 [2023-03-30 23:34:52,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:34:52,856 INFO L495 AbstractCegarLoop]: Abstraction has 17066 states and 19772 transitions. [2023-03-30 23:34:52,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:34:52,856 INFO L276 IsEmpty]: Start isEmpty. Operand 17066 states and 19772 transitions. [2023-03-30 23:34:52,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2023-03-30 23:34:52,869 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:34:52,869 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-03-30 23:34:52,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-03-30 23:34:53,075 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,SelfDestructingSolverStorable9 [2023-03-30 23:34:53,076 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:34:53,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:34:53,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1334106853, now seen corresponding path program 1 times [2023-03-30 23:34:53,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:34:53,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840438539] [2023-03-30 23:34:53,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:53,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:34:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:53,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:34:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:53,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:34:53,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:53,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2023-03-30 23:34:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:53,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2023-03-30 23:34:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:53,755 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 286 proven. 79 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-03-30 23:34:53,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:34:53,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840438539] [2023-03-30 23:34:53,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840438539] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:34:53,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386557463] [2023-03-30 23:34:53,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:53,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:34:53,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:34:53,761 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:34:53,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-03-30 23:34:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:53,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:34:53,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:34:54,173 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 403 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-03-30 23:34:54,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:34:54,602 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 287 proven. 80 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-03-30 23:34:54,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386557463] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:34:54,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:34:54,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-03-30 23:34:54,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191361244] [2023-03-30 23:34:54,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:34:54,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-30 23:34:54,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:34:54,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-30 23:34:54,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-03-30 23:34:54,605 INFO L87 Difference]: Start difference. First operand 17066 states and 19772 transitions. Second operand has 11 states, 11 states have (on average 78.72727272727273) internal successors, (866), 9 states have internal predecessors, (866), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-30 23:34:58,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:34:58,134 INFO L93 Difference]: Finished difference Result 33014 states and 38340 transitions. [2023-03-30 23:34:58,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-03-30 23:34:58,135 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 78.72727272727273) internal successors, (866), 9 states have internal predecessors, (866), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 580 [2023-03-30 23:34:58,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:34:58,183 INFO L225 Difference]: With dead ends: 33014 [2023-03-30 23:34:58,184 INFO L226 Difference]: Without dead ends: 16261 [2023-03-30 23:34:58,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1201 GetRequests, 1175 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=175, Invalid=475, Unknown=0, NotChecked=0, Total=650 [2023-03-30 23:34:58,209 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 1821 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 3236 mSolverCounterSat, 567 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1821 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 3803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 3236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-03-30 23:34:58,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1821 Valid, 281 Invalid, 3803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [567 Valid, 3236 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-03-30 23:34:58,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16261 states. [2023-03-30 23:34:58,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16261 to 15902. [2023-03-30 23:34:58,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15902 states, 15488 states have (on average 1.0899405991735538) internal successors, (16881), 15679 states have internal predecessors, (16881), 102 states have call successors, (102), 102 states have call predecessors, (102), 311 states have return successors, (1030), 120 states have call predecessors, (1030), 101 states have call successors, (1030) [2023-03-30 23:34:58,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15902 states to 15902 states and 18013 transitions. [2023-03-30 23:34:58,471 INFO L78 Accepts]: Start accepts. Automaton has 15902 states and 18013 transitions. Word has length 580 [2023-03-30 23:34:58,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:34:58,471 INFO L495 AbstractCegarLoop]: Abstraction has 15902 states and 18013 transitions. [2023-03-30 23:34:58,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 78.72727272727273) internal successors, (866), 9 states have internal predecessors, (866), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-30 23:34:58,472 INFO L276 IsEmpty]: Start isEmpty. Operand 15902 states and 18013 transitions. [2023-03-30 23:34:58,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2023-03-30 23:34:58,482 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:34:58,482 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2023-03-30 23:34:58,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-03-30 23:34:58,689 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,SelfDestructingSolverStorable10 [2023-03-30 23:34:58,689 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:34:58,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:34:58,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1091080533, now seen corresponding path program 1 times [2023-03-30 23:34:58,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:34:58,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869222623] [2023-03-30 23:34:58,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:58,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:34:58,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat