/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/eca-rers2012/Problem14_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-30 23:29:00,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-30 23:29:00,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-30 23:29:00,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-30 23:29:00,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-30 23:29:00,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-30 23:29:00,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-30 23:29:00,582 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-30 23:29:00,608 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-30 23:29:00,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-30 23:29:00,608 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-30 23:29:00,608 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-30 23:29:00,609 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-30 23:29:00,610 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-30 23:29:00,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-30 23:29:00,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-30 23:29:00,611 INFO L138 SettingsManager]: * Use SBE=true [2023-03-30 23:29:00,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-30 23:29:00,612 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-30 23:29:00,612 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-30 23:29:00,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-30 23:29:00,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-30 23:29:00,612 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-30 23:29:00,612 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-30 23:29:00,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-30 23:29:00,612 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-30 23:29:00,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-30 23:29:00,613 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-30 23:29:00,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-30 23:29:00,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-30 23:29:00,613 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-30 23:29:00,613 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-30 23:29:00,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:29:00,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-30 23:29:00,613 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-30 23:29:00,614 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-30 23:29:00,614 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-30 23:29:00,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-30 23:29:00,614 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-30 23:29:00,614 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-30 23:29:00,614 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-30 23:29:00,614 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-30 23:29:00,614 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-30 23:29:00,614 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-30 23:29:00,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-30 23:29:00,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-30 23:29:00,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-30 23:29:00,818 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-30 23:29:00,819 INFO L275 PluginConnector]: CDTParser initialized [2023-03-30 23:29:00,819 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem14_label37.c [2023-03-30 23:29:01,952 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-30 23:29:02,145 INFO L351 CDTParser]: Found 1 translation units. [2023-03-30 23:29:02,146 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label37.c [2023-03-30 23:29:02,163 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/485a26c99/f72c690dfbb44e1c9c5cecb21bde5cc9/FLAG4de51c74b [2023-03-30 23:29:02,180 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/485a26c99/f72c690dfbb44e1c9c5cecb21bde5cc9 [2023-03-30 23:29:02,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-30 23:29:02,183 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-30 23:29:02,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-30 23:29:02,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-30 23:29:02,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-30 23:29:02,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:29:02" (1/1) ... [2023-03-30 23:29:02,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2133bde2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:02, skipping insertion in model container [2023-03-30 23:29:02,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:29:02" (1/1) ... [2023-03-30 23:29:02,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-30 23:29:02,228 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-30 23:29:02,333 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label37.c[2094,2107] [2023-03-30 23:29:02,464 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:29:02,471 INFO L203 MainTranslator]: Completed pre-run [2023-03-30 23:29:02,482 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label37.c[2094,2107] [2023-03-30 23:29:02,554 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:29:02,563 INFO L208 MainTranslator]: Completed translation [2023-03-30 23:29:02,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:02 WrapperNode [2023-03-30 23:29:02,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-30 23:29:02,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-30 23:29:02,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-30 23:29:02,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-30 23:29:02,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:02" (1/1) ... [2023-03-30 23:29:02,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:02" (1/1) ... [2023-03-30 23:29:02,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:02" (1/1) ... [2023-03-30 23:29:02,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:02" (1/1) ... [2023-03-30 23:29:02,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:02" (1/1) ... [2023-03-30 23:29:02,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:02" (1/1) ... [2023-03-30 23:29:02,668 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:02" (1/1) ... [2023-03-30 23:29:02,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:02" (1/1) ... [2023-03-30 23:29:02,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-30 23:29:02,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-30 23:29:02,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-30 23:29:02,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-30 23:29:02,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:02" (1/1) ... [2023-03-30 23:29:02,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:29:02,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:29:02,707 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-30 23:29:02,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-30 23:29:02,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-30 23:29:02,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-30 23:29:02,758 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-30 23:29:02,758 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-03-30 23:29:02,758 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-30 23:29:02,758 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-03-30 23:29:02,759 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-30 23:29:02,759 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-30 23:29:02,759 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-30 23:29:02,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-30 23:29:02,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-30 23:29:02,759 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-30 23:29:02,759 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-30 23:29:02,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-30 23:29:02,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-30 23:29:02,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-30 23:29:02,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-30 23:29:02,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-30 23:29:02,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-30 23:29:02,809 INFO L236 CfgBuilder]: Building ICFG [2023-03-30 23:29:02,810 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-30 23:29:03,562 INFO L277 CfgBuilder]: Performing block encoding [2023-03-30 23:29:03,575 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-30 23:29:03,575 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-30 23:29:03,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:29:03 BoogieIcfgContainer [2023-03-30 23:29:03,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-30 23:29:03,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-30 23:29:03,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-30 23:29:03,582 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-30 23:29:03,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 11:29:02" (1/3) ... [2023-03-30 23:29:03,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f747de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:29:03, skipping insertion in model container [2023-03-30 23:29:03,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:29:02" (2/3) ... [2023-03-30 23:29:03,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f747de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:29:03, skipping insertion in model container [2023-03-30 23:29:03,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:29:03" (3/3) ... [2023-03-30 23:29:03,586 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label37.c [2023-03-30 23:29:03,598 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-30 23:29:03,598 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-30 23:29:03,649 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-30 23:29:03,655 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;@4a45ea1c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-30 23:29:03,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-30 23:29:03,661 INFO L276 IsEmpty]: Start isEmpty. Operand has 254 states, 246 states have (on average 1.7276422764227641) internal successors, (425), 247 states have internal predecessors, (425), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-30 23:29:03,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-03-30 23:29:03,667 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:29:03,667 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] [2023-03-30 23:29:03,668 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:29:03,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:29:03,674 INFO L85 PathProgramCache]: Analyzing trace with hash 769479569, now seen corresponding path program 1 times [2023-03-30 23:29:03,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:29:03,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689212656] [2023-03-30 23:29:03,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:03,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:29:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:04,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:29:04,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:04,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:29:04,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:29:04,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689212656] [2023-03-30 23:29:04,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689212656] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:29:04,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:29:04,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-30 23:29:04,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280041562] [2023-03-30 23:29:04,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:29:04,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:29:04,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:29:04,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:29:04,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:29:04,081 INFO L87 Difference]: Start difference. First operand has 254 states, 246 states have (on average 1.7276422764227641) internal successors, (425), 247 states have internal predecessors, (425), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:29:05,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:29:05,536 INFO L93 Difference]: Finished difference Result 886 states and 1611 transitions. [2023-03-30 23:29:05,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-30 23:29:05,538 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 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 24 [2023-03-30 23:29:05,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:29:05,551 INFO L225 Difference]: With dead ends: 886 [2023-03-30 23:29:05,551 INFO L226 Difference]: Without dead ends: 564 [2023-03-30 23:29:05,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:29:05,559 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 1034 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1034 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 1505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-30 23:29:05,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1034 Valid, 28 Invalid, 1505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-03-30 23:29:05,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2023-03-30 23:29:05,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 560. [2023-03-30 23:29:05,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 547 states have (on average 1.517367458866545) internal successors, (830), 550 states have internal predecessors, (830), 5 states have call successors, (5), 5 states have call predecessors, (5), 7 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-03-30 23:29:05,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 848 transitions. [2023-03-30 23:29:05,636 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 848 transitions. Word has length 24 [2023-03-30 23:29:05,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:29:05,636 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 848 transitions. [2023-03-30 23:29:05,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:29:05,637 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 848 transitions. [2023-03-30 23:29:05,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-03-30 23:29:05,641 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:29:05,641 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-03-30 23:29:05,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-30 23:29:05,642 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:29:05,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:29:05,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1182757861, now seen corresponding path program 1 times [2023-03-30 23:29:05,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:29:05,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844298630] [2023-03-30 23:29:05,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:05,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:29:05,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:05,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:29:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:05,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:29:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:05,950 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:29:05,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:29:05,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844298630] [2023-03-30 23:29:05,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844298630] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:29:05,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:29:05,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-30 23:29:05,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546103555] [2023-03-30 23:29:05,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:29:05,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-30 23:29:05,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:29:05,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-30 23:29:05,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:29:05,955 INFO L87 Difference]: Start difference. First operand 560 states and 848 transitions. Second operand has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:29:07,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:29:07,059 INFO L93 Difference]: Finished difference Result 1702 states and 2664 transitions. [2023-03-30 23:29:07,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-30 23:29:07,059 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 103 [2023-03-30 23:29:07,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:29:07,068 INFO L225 Difference]: With dead ends: 1702 [2023-03-30 23:29:07,068 INFO L226 Difference]: Without dead ends: 1148 [2023-03-30 23:29:07,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-03-30 23:29:07,071 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 950 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-30 23:29:07,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 55 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-30 23:29:07,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2023-03-30 23:29:07,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1124. [2023-03-30 23:29:07,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1124 states, 1096 states have (on average 1.4069343065693432) internal successors, (1542), 1108 states have internal predecessors, (1542), 8 states have call successors, (8), 8 states have call predecessors, (8), 19 states have return successors, (59), 7 states have call predecessors, (59), 7 states have call successors, (59) [2023-03-30 23:29:07,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 1609 transitions. [2023-03-30 23:29:07,186 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 1609 transitions. Word has length 103 [2023-03-30 23:29:07,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:29:07,192 INFO L495 AbstractCegarLoop]: Abstraction has 1124 states and 1609 transitions. [2023-03-30 23:29:07,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:29:07,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 1609 transitions. [2023-03-30 23:29:07,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-03-30 23:29:07,196 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:29:07,196 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-03-30 23:29:07,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-30 23:29:07,196 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:29:07,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:29:07,197 INFO L85 PathProgramCache]: Analyzing trace with hash -39607196, now seen corresponding path program 1 times [2023-03-30 23:29:07,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:29:07,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929482964] [2023-03-30 23:29:07,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:07,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:29:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:07,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:29:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:07,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:29:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:07,473 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:29:07,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:29:07,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929482964] [2023-03-30 23:29:07,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929482964] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:29:07,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89621110] [2023-03-30 23:29:07,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:07,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:07,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:29:07,491 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:29:07,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-30 23:29:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:07,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:29:07,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:29:07,708 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:29:07,708 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:29:07,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89621110] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:29:07,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:29:07,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 23:29:07,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385907331] [2023-03-30 23:29:07,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:29:07,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:29:07,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:29:07,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:29:07,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:29:07,710 INFO L87 Difference]: Start difference. First operand 1124 states and 1609 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-30 23:29:08,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:29:08,336 INFO L93 Difference]: Finished difference Result 2242 states and 3218 transitions. [2023-03-30 23:29:08,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:29:08,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 136 [2023-03-30 23:29:08,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:29:08,341 INFO L225 Difference]: With dead ends: 2242 [2023-03-30 23:29:08,341 INFO L226 Difference]: Without dead ends: 1124 [2023-03-30 23:29:08,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:29:08,343 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 174 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:29:08,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 279 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-30 23:29:08,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2023-03-30 23:29:08,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1124. [2023-03-30 23:29:08,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1124 states, 1096 states have (on average 1.291058394160584) internal successors, (1415), 1108 states have internal predecessors, (1415), 8 states have call successors, (8), 8 states have call predecessors, (8), 19 states have return successors, (54), 7 states have call predecessors, (54), 7 states have call successors, (54) [2023-03-30 23:29:08,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 1477 transitions. [2023-03-30 23:29:08,366 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 1477 transitions. Word has length 136 [2023-03-30 23:29:08,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:29:08,366 INFO L495 AbstractCegarLoop]: Abstraction has 1124 states and 1477 transitions. [2023-03-30 23:29:08,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-30 23:29:08,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 1477 transitions. [2023-03-30 23:29:08,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-03-30 23:29:08,368 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:29:08,368 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-03-30 23:29:08,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-03-30 23:29:08,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:08,574 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:29:08,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:29:08,575 INFO L85 PathProgramCache]: Analyzing trace with hash 819529913, now seen corresponding path program 1 times [2023-03-30 23:29:08,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:29:08,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480476487] [2023-03-30 23:29:08,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:08,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:29:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:08,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:29:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:08,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:29:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:09,001 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:29:09,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:29:09,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480476487] [2023-03-30 23:29:09,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480476487] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:29:09,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:29:09,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-30 23:29:09,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102237775] [2023-03-30 23:29:09,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:29:09,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-30 23:29:09,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:29:09,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-30 23:29:09,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:29:09,007 INFO L87 Difference]: Start difference. First operand 1124 states and 1477 transitions. Second operand has 7 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:29:09,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:29:09,910 INFO L93 Difference]: Finished difference Result 2844 states and 3819 transitions. [2023-03-30 23:29:09,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-30 23:29:09,913 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 141 [2023-03-30 23:29:09,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:29:09,919 INFO L225 Difference]: With dead ends: 2844 [2023-03-30 23:29:09,920 INFO L226 Difference]: Without dead ends: 1726 [2023-03-30 23:29:09,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:29:09,923 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 736 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-30 23:29:09,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 45 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-30 23:29:09,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2023-03-30 23:29:09,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1512. [2023-03-30 23:29:09,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1468 states have (on average 1.2459128065395095) internal successors, (1829), 1492 states have internal predecessors, (1829), 10 states have call successors, (10), 10 states have call predecessors, (10), 33 states have return successors, (100), 9 states have call predecessors, (100), 9 states have call successors, (100) [2023-03-30 23:29:09,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 1939 transitions. [2023-03-30 23:29:09,965 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 1939 transitions. Word has length 141 [2023-03-30 23:29:09,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:29:09,966 INFO L495 AbstractCegarLoop]: Abstraction has 1512 states and 1939 transitions. [2023-03-30 23:29:09,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:29:09,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 1939 transitions. [2023-03-30 23:29:09,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-03-30 23:29:09,971 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:29:09,971 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:29:09,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-30 23:29:09,971 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:29:09,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:29:09,972 INFO L85 PathProgramCache]: Analyzing trace with hash -974244489, now seen corresponding path program 1 times [2023-03-30 23:29:09,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:29:09,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600081396] [2023-03-30 23:29:09,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:09,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:29:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:10,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:29:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:10,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:29:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:10,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-03-30 23:29:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:10,216 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-03-30 23:29:10,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:29:10,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600081396] [2023-03-30 23:29:10,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600081396] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:29:10,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252761461] [2023-03-30 23:29:10,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:10,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:10,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:29:10,218 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:29:10,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-30 23:29:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:10,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:29:10,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:29:10,339 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-03-30 23:29:10,339 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:29:10,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252761461] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:29:10,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:29:10,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-03-30 23:29:10,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114975444] [2023-03-30 23:29:10,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:29:10,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:29:10,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:29:10,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:29:10,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:29:10,341 INFO L87 Difference]: Start difference. First operand 1512 states and 1939 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:29:10,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:29:10,841 INFO L93 Difference]: Finished difference Result 3764 states and 4931 transitions. [2023-03-30 23:29:10,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:29:10,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 216 [2023-03-30 23:29:10,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:29:10,849 INFO L225 Difference]: With dead ends: 3764 [2023-03-30 23:29:10,849 INFO L226 Difference]: Without dead ends: 2258 [2023-03-30 23:29:10,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 223 SyntacticMatches, 0 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 23:29:10,852 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 180 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-30 23:29:10,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 96 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-30 23:29:10,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2023-03-30 23:29:10,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 2258. [2023-03-30 23:29:10,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2258 states, 2197 states have (on average 1.2298588984979517) internal successors, (2702), 2230 states have internal predecessors, (2702), 14 states have call successors, (14), 14 states have call predecessors, (14), 46 states have return successors, (191), 13 states have call predecessors, (191), 13 states have call successors, (191) [2023-03-30 23:29:10,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2258 states to 2258 states and 2907 transitions. [2023-03-30 23:29:10,894 INFO L78 Accepts]: Start accepts. Automaton has 2258 states and 2907 transitions. Word has length 216 [2023-03-30 23:29:10,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:29:10,894 INFO L495 AbstractCegarLoop]: Abstraction has 2258 states and 2907 transitions. [2023-03-30 23:29:10,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:29:10,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2258 states and 2907 transitions. [2023-03-30 23:29:10,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-03-30 23:29:10,897 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:29:10,898 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:29:10,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-03-30 23:29:11,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:11,103 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:29:11,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:29:11,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1696730226, now seen corresponding path program 1 times [2023-03-30 23:29:11,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:29:11,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74040083] [2023-03-30 23:29:11,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:11,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:29:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:11,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:29:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:11,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:29:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:11,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-03-30 23:29:11,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:11,349 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-03-30 23:29:11,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:29:11,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74040083] [2023-03-30 23:29:11,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74040083] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:29:11,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454557807] [2023-03-30 23:29:11,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:11,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:11,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:29:11,351 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:29:11,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-30 23:29:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:11,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:29:11,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:29:11,542 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-03-30 23:29:11,542 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:29:11,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454557807] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:29:11,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:29:11,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 23:29:11,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537532622] [2023-03-30 23:29:11,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:29:11,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:29:11,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:29:11,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:29:11,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:29:11,545 INFO L87 Difference]: Start difference. First operand 2258 states and 2907 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:29:12,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:29:12,012 INFO L93 Difference]: Finished difference Result 3728 states and 4819 transitions. [2023-03-30 23:29:12,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:29:12,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 247 [2023-03-30 23:29:12,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:29:12,027 INFO L225 Difference]: With dead ends: 3728 [2023-03-30 23:29:12,028 INFO L226 Difference]: Without dead ends: 3726 [2023-03-30 23:29:12,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:29:12,032 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 182 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-30 23:29:12,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 51 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-30 23:29:12,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3726 states. [2023-03-30 23:29:12,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3726 to 2450. [2023-03-30 23:29:12,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2450 states, 2382 states have (on average 1.239714525608732) internal successors, (2953), 2420 states have internal predecessors, (2953), 15 states have call successors, (15), 15 states have call predecessors, (15), 52 states have return successors, (232), 14 states have call predecessors, (232), 14 states have call successors, (232) [2023-03-30 23:29:12,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2450 states to 2450 states and 3200 transitions. [2023-03-30 23:29:12,097 INFO L78 Accepts]: Start accepts. Automaton has 2450 states and 3200 transitions. Word has length 247 [2023-03-30 23:29:12,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:29:12,097 INFO L495 AbstractCegarLoop]: Abstraction has 2450 states and 3200 transitions. [2023-03-30 23:29:12,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:29:12,098 INFO L276 IsEmpty]: Start isEmpty. Operand 2450 states and 3200 transitions. [2023-03-30 23:29:12,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2023-03-30 23:29:12,101 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:29:12,102 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:29:12,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-30 23:29:12,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:12,307 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:29:12,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:29:12,308 INFO L85 PathProgramCache]: Analyzing trace with hash -599841893, now seen corresponding path program 1 times [2023-03-30 23:29:12,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:29:12,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367397163] [2023-03-30 23:29:12,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:12,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:29:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:12,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:29:12,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:12,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:29:12,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:12,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-03-30 23:29:12,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:13,077 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-30 23:29:13,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:29:13,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367397163] [2023-03-30 23:29:13,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367397163] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:29:13,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539226232] [2023-03-30 23:29:13,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:13,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:13,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:29:13,099 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:29:13,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-30 23:29:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:13,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 11 conjunts are in the unsatisfiable core [2023-03-30 23:29:13,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:29:13,642 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-03-30 23:29:13,642 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:29:13,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539226232] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:29:13,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:29:13,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-03-30 23:29:13,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006271042] [2023-03-30 23:29:13,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:29:13,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:29:13,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:29:13,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:29:13,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-03-30 23:29:13,644 INFO L87 Difference]: Start difference. First operand 2450 states and 3200 transitions. Second operand has 5 states, 5 states have (on average 50.8) internal successors, (254), 4 states have internal predecessors, (254), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-30 23:29:14,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:29:14,312 INFO L93 Difference]: Finished difference Result 5276 states and 6852 transitions. [2023-03-30 23:29:14,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-30 23:29:14,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 50.8) internal successors, (254), 4 states have internal predecessors, (254), 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 278 [2023-03-30 23:29:14,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:29:14,321 INFO L225 Difference]: With dead ends: 5276 [2023-03-30 23:29:14,321 INFO L226 Difference]: Without dead ends: 2832 [2023-03-30 23:29:14,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-03-30 23:29:14,326 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 341 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:29:14,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 53 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-30 23:29:14,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2023-03-30 23:29:14,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 2824. [2023-03-30 23:29:14,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2824 states, 2747 states have (on average 1.2187841281397889) internal successors, (3348), 2790 states have internal predecessors, (3348), 17 states have call successors, (17), 17 states have call predecessors, (17), 59 states have return successors, (253), 16 states have call predecessors, (253), 16 states have call successors, (253) [2023-03-30 23:29:14,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2824 states to 2824 states and 3618 transitions. [2023-03-30 23:29:14,377 INFO L78 Accepts]: Start accepts. Automaton has 2824 states and 3618 transitions. Word has length 278 [2023-03-30 23:29:14,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:29:14,377 INFO L495 AbstractCegarLoop]: Abstraction has 2824 states and 3618 transitions. [2023-03-30 23:29:14,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.8) internal successors, (254), 4 states have internal predecessors, (254), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-30 23:29:14,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2824 states and 3618 transitions. [2023-03-30 23:29:14,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2023-03-30 23:29:14,383 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:29:14,383 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:29:14,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-03-30 23:29:14,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:14,589 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:29:14,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:29:14,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1761156315, now seen corresponding path program 1 times [2023-03-30 23:29:14,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:29:14,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658495532] [2023-03-30 23:29:14,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:14,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:29:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:14,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:29:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:14,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:29:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:15,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-03-30 23:29:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:15,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-03-30 23:29:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:15,395 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 125 proven. 111 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-03-30 23:29:15,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:29:15,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658495532] [2023-03-30 23:29:15,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658495532] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:29:15,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618252708] [2023-03-30 23:29:15,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:15,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:15,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:29:15,397 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:29:15,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-03-30 23:29:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:15,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 11 conjunts are in the unsatisfiable core [2023-03-30 23:29:15,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:29:15,841 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-03-30 23:29:15,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:29:15,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618252708] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:29:15,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:29:15,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-03-30 23:29:15,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935258922] [2023-03-30 23:29:15,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:29:15,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:29:15,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:29:15,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:29:15,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-03-30 23:29:15,843 INFO L87 Difference]: Start difference. First operand 2824 states and 3618 transitions. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 4 states have internal predecessors, (216), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-30 23:29:16,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:29:16,547 INFO L93 Difference]: Finished difference Result 5294 states and 6881 transitions. [2023-03-30 23:29:16,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-30 23:29:16,548 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 4 states have internal predecessors, (216), 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 351 [2023-03-30 23:29:16,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:29:16,556 INFO L225 Difference]: With dead ends: 5294 [2023-03-30 23:29:16,556 INFO L226 Difference]: Without dead ends: 2842 [2023-03-30 23:29:16,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-03-30 23:29:16,560 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 423 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:29:16,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 57 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-30 23:29:16,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2023-03-30 23:29:16,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 2828. [2023-03-30 23:29:16,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 2749 states have (on average 1.2098945070934886) internal successors, (3326), 2794 states have internal predecessors, (3326), 17 states have call successors, (17), 17 states have call predecessors, (17), 61 states have return successors, (254), 16 states have call predecessors, (254), 16 states have call successors, (254) [2023-03-30 23:29:16,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 3597 transitions. [2023-03-30 23:29:16,607 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 3597 transitions. Word has length 351 [2023-03-30 23:29:16,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:29:16,607 INFO L495 AbstractCegarLoop]: Abstraction has 2828 states and 3597 transitions. [2023-03-30 23:29:16,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 4 states have internal predecessors, (216), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-30 23:29:16,608 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 3597 transitions. [2023-03-30 23:29:16,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2023-03-30 23:29:16,613 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:29:16,613 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:29:16,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-03-30 23:29:16,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:16,821 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:29:16,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:29:16,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1215230554, now seen corresponding path program 1 times [2023-03-30 23:29:16,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:29:16,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069319067] [2023-03-30 23:29:16,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:16,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:29:16,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:17,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:29:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:17,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:29:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:17,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-03-30 23:29:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:17,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-03-30 23:29:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:17,674 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 85 proven. 239 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-03-30 23:29:17,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:29:17,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069319067] [2023-03-30 23:29:17,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069319067] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:29:17,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866486522] [2023-03-30 23:29:17,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:17,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:17,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:29:17,679 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:29:17,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-03-30 23:29:17,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:17,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 15 conjunts are in the unsatisfiable core [2023-03-30 23:29:17,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:29:18,840 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 311 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-03-30 23:29:18,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:29:21,387 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 56 proven. 271 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-03-30 23:29:21,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866486522] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:29:21,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:29:21,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22 [2023-03-30 23:29:21,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533062790] [2023-03-30 23:29:21,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:29:21,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-03-30 23:29:21,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:29:21,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-03-30 23:29:21,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2023-03-30 23:29:21,391 INFO L87 Difference]: Start difference. First operand 2828 states and 3597 transitions. Second operand has 22 states, 22 states have (on average 39.04545454545455) internal successors, (859), 21 states have internal predecessors, (859), 7 states have call successors, (14), 11 states have call predecessors, (14), 10 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) [2023-03-30 23:29:25,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:29:25,319 INFO L93 Difference]: Finished difference Result 6927 states and 9193 transitions. [2023-03-30 23:29:25,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-03-30 23:29:25,320 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 39.04545454545455) internal successors, (859), 21 states have internal predecessors, (859), 7 states have call successors, (14), 11 states have call predecessors, (14), 10 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) Word has length 362 [2023-03-30 23:29:25,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:29:25,333 INFO L225 Difference]: With dead ends: 6927 [2023-03-30 23:29:25,333 INFO L226 Difference]: Without dead ends: 4356 [2023-03-30 23:29:25,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 803 GetRequests, 747 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=750, Invalid=2442, Unknown=0, NotChecked=0, Total=3192 [2023-03-30 23:29:25,339 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 2641 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 3956 mSolverCounterSat, 751 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2647 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 4707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 751 IncrementalHoareTripleChecker+Valid, 3956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:29:25,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2647 Valid, 171 Invalid, 4707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [751 Valid, 3956 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-03-30 23:29:25,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4356 states. [2023-03-30 23:29:25,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4356 to 4106. [2023-03-30 23:29:25,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4106 states, 4011 states have (on average 1.1027175268012965) internal successors, (4423), 4058 states have internal predecessors, (4423), 24 states have call successors, (24), 24 states have call predecessors, (24), 70 states have return successors, (267), 23 states have call predecessors, (267), 23 states have call successors, (267) [2023-03-30 23:29:25,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4106 states to 4106 states and 4714 transitions. [2023-03-30 23:29:25,418 INFO L78 Accepts]: Start accepts. Automaton has 4106 states and 4714 transitions. Word has length 362 [2023-03-30 23:29:25,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:29:25,418 INFO L495 AbstractCegarLoop]: Abstraction has 4106 states and 4714 transitions. [2023-03-30 23:29:25,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 39.04545454545455) internal successors, (859), 21 states have internal predecessors, (859), 7 states have call successors, (14), 11 states have call predecessors, (14), 10 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) [2023-03-30 23:29:25,419 INFO L276 IsEmpty]: Start isEmpty. Operand 4106 states and 4714 transitions. [2023-03-30 23:29:25,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2023-03-30 23:29:25,428 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:29:25,428 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:29:25,443 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 23:29:25,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:25,635 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:29:25,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:29:25,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1268138078, now seen corresponding path program 1 times [2023-03-30 23:29:25,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:29:25,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850656544] [2023-03-30 23:29:25,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:25,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:29:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:26,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:29:26,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:26,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:29:26,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:26,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-30 23:29:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:26,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-03-30 23:29:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:26,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2023-03-30 23:29:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:26,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2023-03-30 23:29:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:26,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 316 proven. 247 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2023-03-30 23:29:26,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:29:26,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850656544] [2023-03-30 23:29:26,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850656544] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:29:26,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579601784] [2023-03-30 23:29:26,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:26,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:26,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:29:26,441 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 23:29:26,442 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 23:29:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:26,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 7 conjunts are in the unsatisfiable core [2023-03-30 23:29:26,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:29:27,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 952 proven. 2 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-03-30 23:29:27,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:29:28,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 321 proven. 243 refuted. 0 times theorem prover too weak. 644 trivial. 0 not checked. [2023-03-30 23:29:28,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579601784] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:29:28,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:29:28,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2023-03-30 23:29:28,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811709178] [2023-03-30 23:29:28,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:29:28,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-03-30 23:29:28,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:29:28,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-03-30 23:29:28,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-03-30 23:29:28,852 INFO L87 Difference]: Start difference. First operand 4106 states and 4714 transitions. Second operand has 14 states, 14 states have (on average 49.42857142857143) internal successors, (692), 12 states have internal predecessors, (692), 6 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-03-30 23:29:32,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:29:32,380 INFO L93 Difference]: Finished difference Result 9884 states and 11492 transitions. [2023-03-30 23:29:32,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-03-30 23:29:32,380 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 49.42857142857143) internal successors, (692), 12 states have internal predecessors, (692), 6 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 630 [2023-03-30 23:29:32,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:29:32,405 INFO L225 Difference]: With dead ends: 9884 [2023-03-30 23:29:32,405 INFO L226 Difference]: Without dead ends: 6150 [2023-03-30 23:29:32,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1360 GetRequests, 1303 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 952 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=597, Invalid=2709, Unknown=0, NotChecked=0, Total=3306 [2023-03-30 23:29:32,415 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 2639 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 3814 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2639 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 4255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 3814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-03-30 23:29:32,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2639 Valid, 187 Invalid, 4255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 3814 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-03-30 23:29:32,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6150 states. [2023-03-30 23:29:32,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6150 to 5962. [2023-03-30 23:29:32,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5962 states, 5829 states have (on average 1.0885229027277405) internal successors, (6345), 5894 states have internal predecessors, (6345), 34 states have call successors, (34), 34 states have call predecessors, (34), 98 states have return successors, (340), 33 states have call predecessors, (340), 33 states have call successors, (340) [2023-03-30 23:29:32,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5962 states to 5962 states and 6719 transitions. [2023-03-30 23:29:32,525 INFO L78 Accepts]: Start accepts. Automaton has 5962 states and 6719 transitions. Word has length 630 [2023-03-30 23:29:32,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:29:32,525 INFO L495 AbstractCegarLoop]: Abstraction has 5962 states and 6719 transitions. [2023-03-30 23:29:32,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 49.42857142857143) internal successors, (692), 12 states have internal predecessors, (692), 6 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-03-30 23:29:32,526 INFO L276 IsEmpty]: Start isEmpty. Operand 5962 states and 6719 transitions. [2023-03-30 23:29:32,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 741 [2023-03-30 23:29:32,540 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:29:32,541 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 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] [2023-03-30 23:29:32,559 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 23:29:32,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:32,747 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:29:32,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:29:32,748 INFO L85 PathProgramCache]: Analyzing trace with hash -133765301, now seen corresponding path program 2 times [2023-03-30 23:29:32,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:29:32,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437145240] [2023-03-30 23:29:32,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:32,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:29:32,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:33,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:29:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:33,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:29:33,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:33,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-30 23:29:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:33,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-03-30 23:29:33,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:33,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2023-03-30 23:29:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:33,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2023-03-30 23:29:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:33,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2023-03-30 23:29:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:33,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1774 backedges. 559 proven. 123 refuted. 0 times theorem prover too weak. 1092 trivial. 0 not checked. [2023-03-30 23:29:33,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:29:33,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437145240] [2023-03-30 23:29:33,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437145240] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:29:33,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064272537] [2023-03-30 23:29:33,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-03-30 23:29:33,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:33,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:29:33,618 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 23:29:33,620 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 23:29:33,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-03-30 23:29:33,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-30 23:29:33,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 13 conjunts are in the unsatisfiable core [2023-03-30 23:29:33,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:29:34,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1774 backedges. 1302 proven. 2 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2023-03-30 23:29:34,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:29:37,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1774 backedges. 459 proven. 243 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2023-03-30 23:29:37,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064272537] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:29:37,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:29:37,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 16 [2023-03-30 23:29:37,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526846268] [2023-03-30 23:29:37,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:29:37,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-03-30 23:29:37,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:29:37,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-03-30 23:29:37,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-03-30 23:29:37,608 INFO L87 Difference]: Start difference. First operand 5962 states and 6719 transitions. Second operand has 16 states, 16 states have (on average 42.0) internal successors, (672), 14 states have internal predecessors, (672), 6 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-03-30 23:29:40,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:29:40,986 INFO L93 Difference]: Finished difference Result 14019 states and 15956 transitions. [2023-03-30 23:29:40,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-03-30 23:29:40,987 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 42.0) internal successors, (672), 14 states have internal predecessors, (672), 6 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 740 [2023-03-30 23:29:40,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:29:41,006 INFO L225 Difference]: With dead ends: 14019 [2023-03-30 23:29:41,007 INFO L226 Difference]: Without dead ends: 8429 [2023-03-30 23:29:41,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1567 GetRequests, 1511 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=661, Invalid=2531, Unknown=0, NotChecked=0, Total=3192 [2023-03-30 23:29:41,015 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 4528 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2345 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4528 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 2788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 2345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-03-30 23:29:41,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4528 Valid, 137 Invalid, 2788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 2345 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-03-30 23:29:41,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8429 states. [2023-03-30 23:29:41,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8429 to 5776. [2023-03-30 23:29:41,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5776 states, 5647 states have (on average 1.0892509296971844) internal successors, (6151), 5710 states have internal predecessors, (6151), 33 states have call successors, (33), 33 states have call predecessors, (33), 95 states have return successors, (327), 32 states have call predecessors, (327), 32 states have call successors, (327) [2023-03-30 23:29:41,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5776 states to 5776 states and 6511 transitions. [2023-03-30 23:29:41,137 INFO L78 Accepts]: Start accepts. Automaton has 5776 states and 6511 transitions. Word has length 740 [2023-03-30 23:29:41,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:29:41,137 INFO L495 AbstractCegarLoop]: Abstraction has 5776 states and 6511 transitions. [2023-03-30 23:29:41,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 42.0) internal successors, (672), 14 states have internal predecessors, (672), 6 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-03-30 23:29:41,138 INFO L276 IsEmpty]: Start isEmpty. Operand 5776 states and 6511 transitions. [2023-03-30 23:29:41,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 902 [2023-03-30 23:29:41,149 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:29:41,149 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:29:41,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-03-30 23:29:41,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-03-30 23:29:41,385 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:29:41,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:29:41,386 INFO L85 PathProgramCache]: Analyzing trace with hash 984958485, now seen corresponding path program 1 times [2023-03-30 23:29:41,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:29:41,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76119680] [2023-03-30 23:29:41,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:41,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:29:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:42,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:29:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:42,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:29:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:42,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-30 23:29:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:42,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-03-30 23:29:42,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:42,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2023-03-30 23:29:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:42,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2023-03-30 23:29:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:42,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2023-03-30 23:29:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:42,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 743 [2023-03-30 23:29:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:42,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2222 backedges. 455 proven. 404 refuted. 0 times theorem prover too weak. 1363 trivial. 0 not checked. [2023-03-30 23:29:42,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:29:42,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76119680] [2023-03-30 23:29:42,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76119680] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:29:42,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16859375] [2023-03-30 23:29:42,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:42,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:42,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:29:42,573 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 23:29:42,574 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 23:29:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:42,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 1291 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:29:42,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:29:43,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2222 backedges. 1601 proven. 2 refuted. 0 times theorem prover too weak. 619 trivial. 0 not checked. [2023-03-30 23:29:43,039 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:29:43,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2222 backedges. 462 proven. 391 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2023-03-30 23:29:43,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16859375] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:29:43,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:29:43,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 14 [2023-03-30 23:29:43,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056622967] [2023-03-30 23:29:43,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:29:43,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-03-30 23:29:43,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:29:43,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-03-30 23:29:43,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-03-30 23:29:43,493 INFO L87 Difference]: Start difference. First operand 5776 states and 6511 transitions. Second operand has 14 states, 14 states have (on average 64.71428571428571) internal successors, (906), 12 states have internal predecessors, (906), 6 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-03-30 23:29:45,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:29:45,357 INFO L93 Difference]: Finished difference Result 13926 states and 15675 transitions. [2023-03-30 23:29:45,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-03-30 23:29:45,381 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 64.71428571428571) internal successors, (906), 12 states have internal predecessors, (906), 6 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 901 [2023-03-30 23:29:45,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:29:45,390 INFO L225 Difference]: With dead ends: 13926 [2023-03-30 23:29:45,390 INFO L226 Difference]: Without dead ends: 4074 [2023-03-30 23:29:45,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1867 GetRequests, 1833 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=292, Invalid=968, Unknown=0, NotChecked=0, Total=1260 [2023-03-30 23:29:45,404 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 2565 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 2611 mSolverCounterSat, 423 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2565 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 3034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 423 IncrementalHoareTripleChecker+Valid, 2611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-03-30 23:29:45,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2565 Valid, 82 Invalid, 3034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [423 Valid, 2611 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-03-30 23:29:45,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4074 states. [2023-03-30 23:29:45,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4074 to 3884. [2023-03-30 23:29:45,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3884 states, 3811 states have (on average 1.0309630018367884) internal successors, (3929), 3838 states have internal predecessors, (3929), 23 states have call successors, (23), 23 states have call predecessors, (23), 49 states have return successors, (127), 22 states have call predecessors, (127), 22 states have call successors, (127) [2023-03-30 23:29:45,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 4079 transitions. [2023-03-30 23:29:45,474 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 4079 transitions. Word has length 901 [2023-03-30 23:29:45,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:29:45,474 INFO L495 AbstractCegarLoop]: Abstraction has 3884 states and 4079 transitions. [2023-03-30 23:29:45,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 64.71428571428571) internal successors, (906), 12 states have internal predecessors, (906), 6 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-03-30 23:29:45,475 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 4079 transitions. [2023-03-30 23:29:45,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1003 [2023-03-30 23:29:45,483 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:29:45,484 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:29:45,498 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 23:29:45,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:45,695 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:29:45,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:29:45,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1762170344, now seen corresponding path program 1 times [2023-03-30 23:29:45,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:29:45,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732413886] [2023-03-30 23:29:45,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:45,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:29:45,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:47,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:29:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:47,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:29:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:47,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-30 23:29:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:47,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-03-30 23:29:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:47,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2023-03-30 23:29:47,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:47,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2023-03-30 23:29:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:47,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 665 [2023-03-30 23:29:47,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:47,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 844 [2023-03-30 23:29:47,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:47,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2697 backedges. 795 proven. 195 refuted. 0 times theorem prover too weak. 1707 trivial. 0 not checked. [2023-03-30 23:29:47,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:29:47,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732413886] [2023-03-30 23:29:47,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732413886] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:29:47,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442839] [2023-03-30 23:29:47,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:47,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:47,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:29:47,585 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 23:29:47,604 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 23:29:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:47,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 8 conjunts are in the unsatisfiable core [2023-03-30 23:29:47,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:29:48,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2697 backedges. 1862 proven. 2 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2023-03-30 23:29:48,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:29:51,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2697 backedges. 653 proven. 302 refuted. 0 times theorem prover too weak. 1742 trivial. 0 not checked. [2023-03-30 23:29:51,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442839] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:29:51,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:29:51,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 17 [2023-03-30 23:29:51,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259717854] [2023-03-30 23:29:51,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:29:51,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-03-30 23:29:51,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:29:51,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-03-30 23:29:51,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2023-03-30 23:29:51,435 INFO L87 Difference]: Start difference. First operand 3884 states and 4079 transitions. Second operand has 17 states, 17 states have (on average 52.0) internal successors, (884), 15 states have internal predecessors, (884), 8 states have call successors, (15), 7 states have call predecessors, (15), 10 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2023-03-30 23:29:56,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:29:56,169 INFO L93 Difference]: Finished difference Result 7598 states and 7998 transitions. [2023-03-30 23:29:56,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-03-30 23:29:56,169 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 52.0) internal successors, (884), 15 states have internal predecessors, (884), 8 states have call successors, (15), 7 states have call predecessors, (15), 10 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 1002 [2023-03-30 23:29:56,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:29:56,176 INFO L225 Difference]: With dead ends: 7598 [2023-03-30 23:29:56,176 INFO L226 Difference]: Without dead ends: 3902 [2023-03-30 23:29:56,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2110 GetRequests, 2049 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1139 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=670, Invalid=3112, Unknown=0, NotChecked=0, Total=3782 [2023-03-30 23:29:56,181 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 6965 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 5327 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6965 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 5544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 5327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-03-30 23:29:56,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6965 Valid, 199 Invalid, 5544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 5327 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-03-30 23:29:56,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3902 states. [2023-03-30 23:29:56,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3902 to 3708. [2023-03-30 23:29:56,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3708 states, 3634 states have (on average 1.0247660979636763) internal successors, (3724), 3664 states have internal predecessors, (3724), 22 states have call successors, (22), 22 states have call predecessors, (22), 51 states have return successors, (103), 21 states have call predecessors, (103), 21 states have call successors, (103) [2023-03-30 23:29:56,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3708 states to 3708 states and 3849 transitions. [2023-03-30 23:29:56,233 INFO L78 Accepts]: Start accepts. Automaton has 3708 states and 3849 transitions. Word has length 1002 [2023-03-30 23:29:56,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:29:56,234 INFO L495 AbstractCegarLoop]: Abstraction has 3708 states and 3849 transitions. [2023-03-30 23:29:56,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 52.0) internal successors, (884), 15 states have internal predecessors, (884), 8 states have call successors, (15), 7 states have call predecessors, (15), 10 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2023-03-30 23:29:56,234 INFO L276 IsEmpty]: Start isEmpty. Operand 3708 states and 3849 transitions. [2023-03-30 23:29:56,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1016 [2023-03-30 23:29:56,242 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:29:56,243 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:29:56,263 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 23:29:56,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-03-30 23:29:56,450 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:29:56,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:29:56,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1512113746, now seen corresponding path program 1 times [2023-03-30 23:29:56,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:29:56,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927999744] [2023-03-30 23:29:56,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:56,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:29:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:57,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:29:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:57,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:29:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:57,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-30 23:29:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:57,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-03-30 23:29:57,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:57,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2023-03-30 23:29:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:57,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2023-03-30 23:29:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:57,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2023-03-30 23:29:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:57,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2023-03-30 23:29:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:57,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2023-03-30 23:29:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:57,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2951 backedges. 919 proven. 23 refuted. 0 times theorem prover too weak. 2009 trivial. 0 not checked. [2023-03-30 23:29:57,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:29:57,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927999744] [2023-03-30 23:29:57,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927999744] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:29:57,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502324278] [2023-03-30 23:29:57,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:29:57,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:29:57,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:29:57,822 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:29:57,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-03-30 23:29:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:29:58,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 1439 conjuncts, 21 conjunts are in the unsatisfiable core [2023-03-30 23:29:58,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:29:58,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2951 backedges. 1572 proven. 26 refuted. 0 times theorem prover too weak. 1353 trivial. 0 not checked. [2023-03-30 23:29:58,879 INFO L327 TraceCheckSpWp]: Computing backward predicates...