/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/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 00:30:26,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 00:30:26,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 00:30:26,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 00:30:26,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 00:30:26,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 00:30:26,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 00:30:26,345 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 00:30:26,364 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 00:30:26,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 00:30:26,365 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 00:30:26,365 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 00:30:26,365 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 00:30:26,365 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 00:30:26,366 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 00:30:26,366 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 00:30:26,366 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 00:30:26,366 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 00:30:26,366 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 00:30:26,366 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 00:30:26,366 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 00:30:26,366 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 00:30:26,366 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 00:30:26,367 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 00:30:26,367 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 00:30:26,367 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 00:30:26,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 00:30:26,367 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 00:30:26,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 00:30:26,367 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 00:30:26,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 00:30:26,368 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 00:30:26,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 00:30:26,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 00:30:26,368 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 00:30:26,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 00:30:26,368 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 00:30:26,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 00:30:26,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 00:30:26,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 00:30:26,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:30:26,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 00:30:26,369 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 00:30:26,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 00:30:26,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 00:30:26,369 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 00:30:26,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 00:30:26,370 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 00:30:26,370 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 00:30:26,370 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-04-01 00:30:26,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 00:30:26,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 00:30:26,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 00:30:26,598 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 00:30:26,599 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 00:30:26,600 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-01 00:30:27,643 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 00:30:28,039 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 00:30:28,040 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-01 00:30:28,081 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26e8c60b9/6e46313c7dd7432dbe66ef568b1cdfd8/FLAG8183f96da [2023-04-01 00:30:28,093 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26e8c60b9/6e46313c7dd7432dbe66ef568b1cdfd8 [2023-04-01 00:30:28,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 00:30:28,097 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 00:30:28,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 00:30:28,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 00:30:28,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 00:30:28,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:30:28" (1/1) ... [2023-04-01 00:30:28,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69f5ce90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:30:28, skipping insertion in model container [2023-04-01 00:30:28,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:30:28" (1/1) ... [2023-04-01 00:30:28,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 00:30:28,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 00:30:28,616 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/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19354,19367] [2023-04-01 00:30:29,460 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:30:29,487 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 00:30:29,564 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/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19354,19367] [2023-04-01 00:30:30,107 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:30:30,132 INFO L208 MainTranslator]: Completed translation [2023-04-01 00:30:30,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:30:30 WrapperNode [2023-04-01 00:30:30,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 00:30:30,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 00:30:30,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 00:30:30,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 00:30:30,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:30:30" (1/1) ... [2023-04-01 00:30:30,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:30:30" (1/1) ... [2023-04-01 00:30:30,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:30:30" (1/1) ... [2023-04-01 00:30:30,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:30:30" (1/1) ... [2023-04-01 00:30:30,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:30:30" (1/1) ... [2023-04-01 00:30:30,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:30:30" (1/1) ... [2023-04-01 00:30:30,372 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:30:30" (1/1) ... [2023-04-01 00:30:30,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:30:30" (1/1) ... [2023-04-01 00:30:30,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 00:30:30,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 00:30:30,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 00:30:30,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 00:30:30,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:30:30" (1/1) ... [2023-04-01 00:30:30,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:30:30,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 00:30:30,462 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 00:30:30,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 00:30:30,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 00:30:30,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 00:30:30,507 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 00:30:30,507 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 00:30:30,507 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 00:30:30,507 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 00:30:30,507 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 00:30:30,507 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 00:30:30,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 00:30:30,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 00:30:30,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 00:30:30,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-01 00:30:30,507 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 00:30:30,508 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 00:30:30,508 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 00:30:30,508 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 00:30:30,508 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-01 00:30:30,508 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-01 00:30:30,508 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-01 00:30:30,508 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-01 00:30:30,508 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-01 00:30:30,509 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 00:30:30,509 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 00:30:30,509 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 00:30:30,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 00:30:30,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 00:30:30,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 00:30:30,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 00:30:30,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 00:30:30,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 00:30:31,067 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 00:30:31,068 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 00:30:35,698 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 00:30:36,102 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 00:30:36,102 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 00:30:36,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:30:36 BoogieIcfgContainer [2023-04-01 00:30:36,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 00:30:36,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 00:30:36,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 00:30:36,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 00:30:36,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:30:28" (1/3) ... [2023-04-01 00:30:36,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b9aa97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:30:36, skipping insertion in model container [2023-04-01 00:30:36,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:30:30" (2/3) ... [2023-04-01 00:30:36,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b9aa97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:30:36, skipping insertion in model container [2023-04-01 00:30:36,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:30:36" (3/3) ... [2023-04-01 00:30:36,114 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-01 00:30:36,126 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 00:30:36,127 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 00:30:36,228 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 00:30:36,233 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=FINITE_AUTOMATA, 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;@49c94e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 00:30:36,233 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 00:30:36,244 INFO L276 IsEmpty]: Start isEmpty. Operand has 2821 states, 2815 states have (on average 1.911190053285968) internal successors, (5380), 2816 states have internal predecessors, (5380), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 00:30:36,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-01 00:30:36,269 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:30:36,270 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:30:36,270 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:30:36,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:30:36,285 INFO L85 PathProgramCache]: Analyzing trace with hash -847438343, now seen corresponding path program 1 times [2023-04-01 00:30:36,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:30:36,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751005101] [2023-04-01 00:30:36,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:30:36,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:30:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:30:37,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:30:37,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:30:37,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751005101] [2023-04-01 00:30:37,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751005101] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:30:37,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:30:37,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 00:30:37,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167139142] [2023-04-01 00:30:37,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:30:37,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 00:30:37,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:30:37,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 00:30:37,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:30:37,330 INFO L87 Difference]: Start difference. First operand has 2821 states, 2815 states have (on average 1.911190053285968) internal successors, (5380), 2816 states have internal predecessors, (5380), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:37,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:30:37,716 INFO L93 Difference]: Finished difference Result 3255 states and 6103 transitions. [2023-04-01 00:30:37,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 00:30:37,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2023-04-01 00:30:37,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:30:37,742 INFO L225 Difference]: With dead ends: 3255 [2023-04-01 00:30:37,742 INFO L226 Difference]: Without dead ends: 3032 [2023-04-01 00:30:37,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:30:37,751 INFO L413 NwaCegarLoop]: 5385 mSDtfsCounter, 2637 mSDsluCounter, 2992 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2637 SdHoareTripleChecker+Valid, 8377 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 00:30:37,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2637 Valid, 8377 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 00:30:37,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2023-04-01 00:30:37,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 3030. [2023-04-01 00:30:37,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3030 states, 3026 states have (on average 1.2729676140118968) internal successors, (3852), 3026 states have internal predecessors, (3852), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:37,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 3855 transitions. [2023-04-01 00:30:37,889 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 3855 transitions. Word has length 81 [2023-04-01 00:30:37,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:30:37,890 INFO L495 AbstractCegarLoop]: Abstraction has 3030 states and 3855 transitions. [2023-04-01 00:30:37,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:37,891 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 3855 transitions. [2023-04-01 00:30:37,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-01 00:30:37,900 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:30:37,900 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:30:37,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 00:30:37,900 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:30:37,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:30:37,901 INFO L85 PathProgramCache]: Analyzing trace with hash 878278385, now seen corresponding path program 1 times [2023-04-01 00:30:37,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:30:37,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42522276] [2023-04-01 00:30:37,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:30:37,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:30:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:30:38,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:30:38,393 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:30:38,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42522276] [2023-04-01 00:30:38,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42522276] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:30:38,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:30:38,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:30:38,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370442850] [2023-04-01 00:30:38,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:30:38,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:30:38,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:30:38,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:30:38,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:30:38,397 INFO L87 Difference]: Start difference. First operand 3030 states and 3855 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:39,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:30:39,455 INFO L93 Difference]: Finished difference Result 4670 states and 6065 transitions. [2023-04-01 00:30:39,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:30:39,456 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2023-04-01 00:30:39,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:30:39,464 INFO L225 Difference]: With dead ends: 4670 [2023-04-01 00:30:39,464 INFO L226 Difference]: Without dead ends: 2530 [2023-04-01 00:30:39,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 00:30:39,469 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 7975 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7975 SdHoareTripleChecker+Valid, 1730 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 00:30:39,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7975 Valid, 1730 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 00:30:39,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2023-04-01 00:30:39,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 2528. [2023-04-01 00:30:39,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2524 states have (on average 1.3050713153724247) internal successors, (3294), 2524 states have internal predecessors, (3294), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:39,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 3297 transitions. [2023-04-01 00:30:39,533 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 3297 transitions. Word has length 81 [2023-04-01 00:30:39,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:30:39,534 INFO L495 AbstractCegarLoop]: Abstraction has 2528 states and 3297 transitions. [2023-04-01 00:30:39,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:39,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 3297 transitions. [2023-04-01 00:30:39,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-01 00:30:39,538 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:30:39,538 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:30:39,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 00:30:39,539 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:30:39,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:30:39,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1215718780, now seen corresponding path program 1 times [2023-04-01 00:30:39,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:30:39,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001714367] [2023-04-01 00:30:39,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:30:39,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:30:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:30:39,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:30:39,869 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:30:39,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001714367] [2023-04-01 00:30:39,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001714367] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:30:39,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:30:39,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:30:39,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747582545] [2023-04-01 00:30:39,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:30:39,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:30:39,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:30:39,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:30:39,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:30:39,872 INFO L87 Difference]: Start difference. First operand 2528 states and 3297 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:40,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:30:40,732 INFO L93 Difference]: Finished difference Result 4393 states and 5882 transitions. [2023-04-01 00:30:40,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:30:40,733 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 82 [2023-04-01 00:30:40,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:30:40,740 INFO L225 Difference]: With dead ends: 4393 [2023-04-01 00:30:40,740 INFO L226 Difference]: Without dead ends: 2515 [2023-04-01 00:30:40,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 00:30:40,748 INFO L413 NwaCegarLoop]: 1129 mSDtfsCounter, 5979 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5979 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 00:30:40,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5979 Valid, 1296 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 00:30:40,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2515 states. [2023-04-01 00:30:40,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2515 to 2513. [2023-04-01 00:30:40,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2513 states, 2509 states have (on average 1.3411717815862894) internal successors, (3365), 2509 states have internal predecessors, (3365), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:40,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2513 states to 2513 states and 3368 transitions. [2023-04-01 00:30:40,831 INFO L78 Accepts]: Start accepts. Automaton has 2513 states and 3368 transitions. Word has length 82 [2023-04-01 00:30:40,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:30:40,832 INFO L495 AbstractCegarLoop]: Abstraction has 2513 states and 3368 transitions. [2023-04-01 00:30:40,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:40,832 INFO L276 IsEmpty]: Start isEmpty. Operand 2513 states and 3368 transitions. [2023-04-01 00:30:40,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 00:30:40,837 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:30:40,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:30:40,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 00:30:40,837 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:30:40,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:30:40,840 INFO L85 PathProgramCache]: Analyzing trace with hash 158376049, now seen corresponding path program 1 times [2023-04-01 00:30:40,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:30:40,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582561629] [2023-04-01 00:30:40,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:30:40,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:30:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:30:41,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:30:41,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:30:41,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582561629] [2023-04-01 00:30:41,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582561629] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:30:41,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:30:41,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 00:30:41,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961322020] [2023-04-01 00:30:41,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:30:41,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 00:30:41,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:30:41,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 00:30:41,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:30:41,041 INFO L87 Difference]: Start difference. First operand 2513 states and 3368 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:41,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:30:41,227 INFO L93 Difference]: Finished difference Result 4814 states and 6597 transitions. [2023-04-01 00:30:41,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 00:30:41,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 00:30:41,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:30:41,238 INFO L225 Difference]: With dead ends: 4814 [2023-04-01 00:30:41,238 INFO L226 Difference]: Without dead ends: 3830 [2023-04-01 00:30:41,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:30:41,241 INFO L413 NwaCegarLoop]: 2528 mSDtfsCounter, 1607 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 3676 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 00:30:41,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1607 Valid, 3676 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 00:30:41,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3830 states. [2023-04-01 00:30:41,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3830 to 3828. [2023-04-01 00:30:41,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3828 states, 3824 states have (on average 1.3446652719665273) internal successors, (5142), 3824 states have internal predecessors, (5142), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:41,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3828 states to 3828 states and 5145 transitions. [2023-04-01 00:30:41,384 INFO L78 Accepts]: Start accepts. Automaton has 3828 states and 5145 transitions. Word has length 83 [2023-04-01 00:30:41,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:30:41,385 INFO L495 AbstractCegarLoop]: Abstraction has 3828 states and 5145 transitions. [2023-04-01 00:30:41,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:41,385 INFO L276 IsEmpty]: Start isEmpty. Operand 3828 states and 5145 transitions. [2023-04-01 00:30:41,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 00:30:41,391 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:30:41,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:30:41,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 00:30:41,392 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:30:41,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:30:41,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1525018141, now seen corresponding path program 1 times [2023-04-01 00:30:41,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:30:41,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382537309] [2023-04-01 00:30:41,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:30:41,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:30:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:30:41,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:30:41,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:30:41,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382537309] [2023-04-01 00:30:41,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382537309] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:30:41,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:30:41,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:30:41,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108446131] [2023-04-01 00:30:41,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:30:41,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:30:41,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:30:41,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:30:41,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:30:41,716 INFO L87 Difference]: Start difference. First operand 3828 states and 5145 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:42,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:30:42,753 INFO L93 Difference]: Finished difference Result 7378 states and 10085 transitions. [2023-04-01 00:30:42,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:30:42,754 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 00:30:42,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:30:42,771 INFO L225 Difference]: With dead ends: 7378 [2023-04-01 00:30:42,771 INFO L226 Difference]: Without dead ends: 4764 [2023-04-01 00:30:42,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 00:30:42,778 INFO L413 NwaCegarLoop]: 910 mSDtfsCounter, 5028 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5028 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 00:30:42,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5028 Valid, 1024 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 00:30:42,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4764 states. [2023-04-01 00:30:43,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4764 to 4762. [2023-04-01 00:30:43,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4762 states, 4758 states have (on average 1.335855401429172) internal successors, (6356), 4758 states have internal predecessors, (6356), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:43,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4762 states to 4762 states and 6359 transitions. [2023-04-01 00:30:43,055 INFO L78 Accepts]: Start accepts. Automaton has 4762 states and 6359 transitions. Word has length 83 [2023-04-01 00:30:43,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:30:43,056 INFO L495 AbstractCegarLoop]: Abstraction has 4762 states and 6359 transitions. [2023-04-01 00:30:43,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:43,057 INFO L276 IsEmpty]: Start isEmpty. Operand 4762 states and 6359 transitions. [2023-04-01 00:30:43,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 00:30:43,063 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:30:43,063 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:30:43,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 00:30:43,064 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:30:43,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:30:43,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1156538848, now seen corresponding path program 1 times [2023-04-01 00:30:43,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:30:43,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647753788] [2023-04-01 00:30:43,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:30:43,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:30:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:30:43,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:30:43,252 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:30:43,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647753788] [2023-04-01 00:30:43,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647753788] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:30:43,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:30:43,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 00:30:43,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363738424] [2023-04-01 00:30:43,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:30:43,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 00:30:43,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:30:43,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 00:30:43,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:30:43,253 INFO L87 Difference]: Start difference. First operand 4762 states and 6359 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:43,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:30:43,838 INFO L93 Difference]: Finished difference Result 9624 states and 13331 transitions. [2023-04-01 00:30:43,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 00:30:43,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 00:30:43,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:30:43,860 INFO L225 Difference]: With dead ends: 9624 [2023-04-01 00:30:43,860 INFO L226 Difference]: Without dead ends: 7275 [2023-04-01 00:30:43,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:30:43,868 INFO L413 NwaCegarLoop]: 1608 mSDtfsCounter, 853 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 2568 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:30:43,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 2568 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:30:43,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7275 states. [2023-04-01 00:30:44,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7275 to 7273. [2023-04-01 00:30:44,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7273 states, 7269 states have (on average 1.3589214472417113) internal successors, (9878), 7269 states have internal predecessors, (9878), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:44,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7273 states to 7273 states and 9881 transitions. [2023-04-01 00:30:44,369 INFO L78 Accepts]: Start accepts. Automaton has 7273 states and 9881 transitions. Word has length 83 [2023-04-01 00:30:44,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:30:44,369 INFO L495 AbstractCegarLoop]: Abstraction has 7273 states and 9881 transitions. [2023-04-01 00:30:44,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:44,370 INFO L276 IsEmpty]: Start isEmpty. Operand 7273 states and 9881 transitions. [2023-04-01 00:30:44,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 00:30:44,377 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:30:44,378 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:30:44,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 00:30:44,378 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:30:44,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:30:44,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1401305766, now seen corresponding path program 1 times [2023-04-01 00:30:44,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:30:44,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249664033] [2023-04-01 00:30:44,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:30:44,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:30:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:30:44,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:30:44,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:30:44,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249664033] [2023-04-01 00:30:44,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249664033] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:30:44,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:30:44,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 00:30:44,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977842233] [2023-04-01 00:30:44,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:30:44,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 00:30:44,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:30:44,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 00:30:44,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:30:44,552 INFO L87 Difference]: Start difference. First operand 7273 states and 9881 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:45,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:30:45,299 INFO L93 Difference]: Finished difference Result 16675 states and 23110 transitions. [2023-04-01 00:30:45,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 00:30:45,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 00:30:45,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:30:45,327 INFO L225 Difference]: With dead ends: 16675 [2023-04-01 00:30:45,327 INFO L226 Difference]: Without dead ends: 11790 [2023-04-01 00:30:45,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:30:45,338 INFO L413 NwaCegarLoop]: 2199 mSDtfsCounter, 1404 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 3219 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 00:30:45,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1404 Valid, 3219 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 00:30:45,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11790 states. [2023-04-01 00:30:46,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11790 to 11788. [2023-04-01 00:30:46,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11788 states, 11784 states have (on average 1.363713509843856) internal successors, (16070), 11784 states have internal predecessors, (16070), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:46,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11788 states to 11788 states and 16073 transitions. [2023-04-01 00:30:46,069 INFO L78 Accepts]: Start accepts. Automaton has 11788 states and 16073 transitions. Word has length 83 [2023-04-01 00:30:46,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:30:46,070 INFO L495 AbstractCegarLoop]: Abstraction has 11788 states and 16073 transitions. [2023-04-01 00:30:46,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:46,070 INFO L276 IsEmpty]: Start isEmpty. Operand 11788 states and 16073 transitions. [2023-04-01 00:30:46,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 00:30:46,083 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:30:46,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:30:46,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 00:30:46,083 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:30:46,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:30:46,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1643493318, now seen corresponding path program 1 times [2023-04-01 00:30:46,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:30:46,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573861636] [2023-04-01 00:30:46,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:30:46,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:30:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:30:46,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:30:46,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:30:46,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573861636] [2023-04-01 00:30:46,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573861636] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:30:46,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:30:46,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:30:46,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433663617] [2023-04-01 00:30:46,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:30:46,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:30:46,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:30:46,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:30:46,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:30:46,346 INFO L87 Difference]: Start difference. First operand 11788 states and 16073 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:48,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:30:48,356 INFO L93 Difference]: Finished difference Result 28962 states and 40268 transitions. [2023-04-01 00:30:48,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:30:48,357 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 00:30:48,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:30:48,391 INFO L225 Difference]: With dead ends: 28962 [2023-04-01 00:30:48,391 INFO L226 Difference]: Without dead ends: 18448 [2023-04-01 00:30:48,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 00:30:48,407 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 4437 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4437 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 00:30:48,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4437 Valid, 956 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 00:30:48,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18448 states. [2023-04-01 00:30:49,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18448 to 18446. [2023-04-01 00:30:49,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18446 states, 18442 states have (on average 1.3841774211040017) internal successors, (25527), 18442 states have internal predecessors, (25527), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:49,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18446 states to 18446 states and 25530 transitions. [2023-04-01 00:30:49,741 INFO L78 Accepts]: Start accepts. Automaton has 18446 states and 25530 transitions. Word has length 83 [2023-04-01 00:30:49,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:30:49,741 INFO L495 AbstractCegarLoop]: Abstraction has 18446 states and 25530 transitions. [2023-04-01 00:30:49,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:49,741 INFO L276 IsEmpty]: Start isEmpty. Operand 18446 states and 25530 transitions. [2023-04-01 00:30:49,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-01 00:30:49,754 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:30:49,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:30:49,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 00:30:49,755 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:30:49,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:30:49,755 INFO L85 PathProgramCache]: Analyzing trace with hash -581288455, now seen corresponding path program 1 times [2023-04-01 00:30:49,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:30:49,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133746805] [2023-04-01 00:30:49,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:30:49,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:30:49,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:30:50,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:30:50,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:30:50,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133746805] [2023-04-01 00:30:50,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133746805] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:30:50,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:30:50,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:30:50,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5427092] [2023-04-01 00:30:50,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:30:50,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:30:50,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:30:50,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:30:50,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:30:50,014 INFO L87 Difference]: Start difference. First operand 18446 states and 25530 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:53,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:30:53,027 INFO L93 Difference]: Finished difference Result 50589 states and 70819 transitions. [2023-04-01 00:30:53,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:30:53,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 84 [2023-04-01 00:30:53,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:30:53,111 INFO L225 Difference]: With dead ends: 50589 [2023-04-01 00:30:53,112 INFO L226 Difference]: Without dead ends: 32760 [2023-04-01 00:30:53,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 00:30:53,139 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 3600 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3600 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 00:30:53,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3600 Valid, 851 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 00:30:53,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32760 states. [2023-04-01 00:30:55,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32760 to 32758. [2023-04-01 00:30:56,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32758 states, 32754 states have (on average 1.3882884533186786) internal successors, (45472), 32754 states have internal predecessors, (45472), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:56,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32758 states to 32758 states and 45475 transitions. [2023-04-01 00:30:56,123 INFO L78 Accepts]: Start accepts. Automaton has 32758 states and 45475 transitions. Word has length 84 [2023-04-01 00:30:56,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:30:56,123 INFO L495 AbstractCegarLoop]: Abstraction has 32758 states and 45475 transitions. [2023-04-01 00:30:56,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:56,124 INFO L276 IsEmpty]: Start isEmpty. Operand 32758 states and 45475 transitions. [2023-04-01 00:30:56,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-01 00:30:56,139 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:30:56,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:30:56,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-01 00:30:56,139 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:30:56,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:30:56,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1768300821, now seen corresponding path program 1 times [2023-04-01 00:30:56,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:30:56,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138017947] [2023-04-01 00:30:56,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:30:56,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:30:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:30:56,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:30:56,318 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:30:56,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138017947] [2023-04-01 00:30:56,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138017947] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:30:56,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:30:56,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 00:30:56,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228117772] [2023-04-01 00:30:56,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:30:56,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 00:30:56,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:30:56,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 00:30:56,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:30:56,319 INFO L87 Difference]: Start difference. First operand 32758 states and 45475 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:31:01,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:31:01,331 INFO L93 Difference]: Finished difference Result 90027 states and 125272 transitions. [2023-04-01 00:31:01,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 00:31:01,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2023-04-01 00:31:01,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:31:01,480 INFO L225 Difference]: With dead ends: 90027 [2023-04-01 00:31:01,480 INFO L226 Difference]: Without dead ends: 58538 [2023-04-01 00:31:01,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:31:01,532 INFO L413 NwaCegarLoop]: 1382 mSDtfsCounter, 867 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 2123 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 00:31:01,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 2123 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 00:31:01,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58538 states. [2023-04-01 00:31:07,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58538 to 58536. [2023-04-01 00:31:07,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58536 states, 58532 states have (on average 1.3792113715574386) internal successors, (80728), 58532 states have internal predecessors, (80728), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:31:07,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58536 states to 58536 states and 80731 transitions. [2023-04-01 00:31:07,381 INFO L78 Accepts]: Start accepts. Automaton has 58536 states and 80731 transitions. Word has length 85 [2023-04-01 00:31:07,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:31:07,381 INFO L495 AbstractCegarLoop]: Abstraction has 58536 states and 80731 transitions. [2023-04-01 00:31:07,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:31:07,381 INFO L276 IsEmpty]: Start isEmpty. Operand 58536 states and 80731 transitions. [2023-04-01 00:31:07,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-01 00:31:07,405 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:31:07,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:31:07,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-01 00:31:07,406 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:31:07,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:31:07,406 INFO L85 PathProgramCache]: Analyzing trace with hash -634181116, now seen corresponding path program 1 times [2023-04-01 00:31:07,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:31:07,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721003056] [2023-04-01 00:31:07,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:31:07,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:31:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:31:07,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:31:07,750 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:31:07,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721003056] [2023-04-01 00:31:07,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721003056] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:31:07,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:31:07,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 00:31:07,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863897592] [2023-04-01 00:31:07,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:31:07,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 00:31:07,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:31:07,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 00:31:07,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 00:31:07,751 INFO L87 Difference]: Start difference. First operand 58536 states and 80731 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)