/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 OctagonDomain -i ../sv-benchmarks/c/psyco/psyco_io_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 04:34:48,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 04:34:49,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 04:34:49,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 04:34:49,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 04:34:49,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 04:34:49,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 04:34:49,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 04:34:49,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 04:34:49,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 04:34:49,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 04:34:49,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2023-04-01 04:34:49,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 04:34:49,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 04:34:49,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 04:34:49,090 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 04:34:49,118 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 04:34:49,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 04:34:49,119 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 04:34:49,119 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 04:34:49,120 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 04:34:49,120 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 04:34:49,120 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 04:34:49,120 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 04:34:49,121 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 04:34:49,121 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 04:34:49,121 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 04:34:49,122 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 04:34:49,122 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 04:34:49,122 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 04:34:49,122 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 04:34:49,122 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 04:34:49,122 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 04:34:49,123 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 04:34:49,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 04:34:49,125 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 04:34:49,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 04:34:49,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 04:34:49,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 04:34:49,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 04:34:49,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 04:34:49,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 04:34:49,126 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 04:34:49,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 04:34:49,126 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 04:34:49,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 04:34:49,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 04:34:49,127 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 04:34:49,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 04:34:49,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 04:34:49,127 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 04:34:49,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 04:34:49,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 04:34:49,128 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 04:34:49,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 04:34:49,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 04:34:49,128 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 04:34:49,128 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 04:34:49,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 04:34:49,416 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 04:34:49,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 04:34:49,419 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 04:34:49,420 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 04:34:49,421 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/psyco/psyco_io_1.c [2023-04-01 04:34:50,512 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 04:34:50,707 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 04:34:50,708 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_io_1.c [2023-04-01 04:34:50,715 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6d4a3550/130367346b8e43afa20f626fa411c201/FLAG446062cb7 [2023-04-01 04:34:50,726 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6d4a3550/130367346b8e43afa20f626fa411c201 [2023-04-01 04:34:50,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 04:34:50,730 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 04:34:50,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 04:34:50,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 04:34:50,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 04:34:50,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 04:34:50" (1/1) ... [2023-04-01 04:34:50,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@705198e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:34:50, skipping insertion in model container [2023-04-01 04:34:50,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 04:34:50" (1/1) ... [2023-04-01 04:34:50,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 04:34:50,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 04:34:50,944 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/psyco/psyco_io_1.c[11478,11491] [2023-04-01 04:34:50,949 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 04:34:50,957 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 04:34:50,982 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/psyco/psyco_io_1.c[11478,11491] [2023-04-01 04:34:50,983 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 04:34:50,994 INFO L208 MainTranslator]: Completed translation [2023-04-01 04:34:50,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:34:50 WrapperNode [2023-04-01 04:34:50,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 04:34:50,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 04:34:50,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 04:34:50,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 04:34:51,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:34:50" (1/1) ... [2023-04-01 04:34:51,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:34:50" (1/1) ... [2023-04-01 04:34:51,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:34:50" (1/1) ... [2023-04-01 04:34:51,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:34:50" (1/1) ... [2023-04-01 04:34:51,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:34:50" (1/1) ... [2023-04-01 04:34:51,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:34:50" (1/1) ... [2023-04-01 04:34:51,026 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:34:50" (1/1) ... [2023-04-01 04:34:51,027 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:34:50" (1/1) ... [2023-04-01 04:34:51,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 04:34:51,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 04:34:51,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 04:34:51,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 04:34:51,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:34:50" (1/1) ... [2023-04-01 04:34:51,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 04:34:51,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 04:34:51,058 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 04:34:51,060 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 04:34:51,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 04:34:51,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 04:34:51,097 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 04:34:51,097 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 04:34:51,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 04:34:51,101 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 04:34:51,101 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 04:34:51,101 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 04:34:51,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 04:34:51,101 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 04:34:51,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 04:34:51,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 04:34:51,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 04:34:51,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 04:34:51,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 04:34:51,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 04:34:51,169 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 04:34:51,171 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 04:34:51,416 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 04:34:51,445 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 04:34:51,445 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-01 04:34:51,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 04:34:51 BoogieIcfgContainer [2023-04-01 04:34:51,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 04:34:51,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 04:34:51,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 04:34:51,467 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 04:34:51,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 04:34:50" (1/3) ... [2023-04-01 04:34:51,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370fa655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 04:34:51, skipping insertion in model container [2023-04-01 04:34:51,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:34:50" (2/3) ... [2023-04-01 04:34:51,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370fa655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 04:34:51, skipping insertion in model container [2023-04-01 04:34:51,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 04:34:51" (3/3) ... [2023-04-01 04:34:51,470 INFO L112 eAbstractionObserver]: Analyzing ICFG psyco_io_1.c [2023-04-01 04:34:51,482 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 04:34:51,482 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 04:34:51,522 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 04:34:51,528 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;@69a66994, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 04:34:51,528 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 04:34:51,531 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 66 states have (on average 1.9242424242424243) internal successors, (127), 67 states have internal predecessors, (127), 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 04:34:51,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-04-01 04:34:51,537 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:34:51,538 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 04:34:51,538 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:34:51,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:34:51,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1413000631, now seen corresponding path program 1 times [2023-04-01 04:34:51,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:34:51,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676405402] [2023-04-01 04:34:51,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:34:51,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:34:51,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:34:51,734 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 04:34:51,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:34:51,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676405402] [2023-04-01 04:34:51,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676405402] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 04:34:51,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 04:34:51,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 04:34:51,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380604617] [2023-04-01 04:34:51,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 04:34:51,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 04:34:51,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:34:51,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 04:34:51,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 04:34:51,776 INFO L87 Difference]: Start difference. First operand has 72 states, 66 states have (on average 1.9242424242424243) internal successors, (127), 67 states have internal predecessors, (127), 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 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 04:34:51,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:34:51,826 INFO L93 Difference]: Finished difference Result 135 states and 249 transitions. [2023-04-01 04:34:51,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 04:34:51,829 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 12 [2023-04-01 04:34:51,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:34:51,839 INFO L225 Difference]: With dead ends: 135 [2023-04-01 04:34:51,839 INFO L226 Difference]: Without dead ends: 60 [2023-04-01 04:34:51,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 04:34:51,848 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 04:34:51,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 103 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 04:34:51,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-04-01 04:34:51,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-04-01 04:34:51,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 56 states have (on average 1.5535714285714286) internal successors, (87), 56 states have internal predecessors, (87), 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 04:34:51,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 90 transitions. [2023-04-01 04:34:51,887 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 90 transitions. Word has length 12 [2023-04-01 04:34:51,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:34:51,887 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 90 transitions. [2023-04-01 04:34:51,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 04:34:51,888 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 90 transitions. [2023-04-01 04:34:51,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-04-01 04:34:51,888 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:34:51,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 04:34:51,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 04:34:51,889 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:34:51,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:34:51,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1385840092, now seen corresponding path program 1 times [2023-04-01 04:34:51,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:34:51,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233022462] [2023-04-01 04:34:51,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:34:51,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:34:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:34:51,956 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 04:34:51,956 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:34:51,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233022462] [2023-04-01 04:34:51,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233022462] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 04:34:51,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 04:34:51,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 04:34:51,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101498577] [2023-04-01 04:34:51,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 04:34:51,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 04:34:51,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:34:51,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 04:34:51,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 04:34:51,960 INFO L87 Difference]: Start difference. First operand 60 states and 90 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 04:34:52,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:34:52,025 INFO L93 Difference]: Finished difference Result 118 states and 179 transitions. [2023-04-01 04:34:52,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 04:34:52,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 13 [2023-04-01 04:34:52,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:34:52,027 INFO L225 Difference]: With dead ends: 118 [2023-04-01 04:34:52,027 INFO L226 Difference]: Without dead ends: 63 [2023-04-01 04:34:52,028 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 04:34:52,029 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 4 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 04:34:52,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 158 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 04:34:52,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-04-01 04:34:52,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-04-01 04:34:52,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 59 states have (on average 1.5254237288135593) internal successors, (90), 59 states have internal predecessors, (90), 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 04:34:52,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 93 transitions. [2023-04-01 04:34:52,037 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 93 transitions. Word has length 13 [2023-04-01 04:34:52,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:34:52,037 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 93 transitions. [2023-04-01 04:34:52,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 04:34:52,038 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 93 transitions. [2023-04-01 04:34:52,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-04-01 04:34:52,038 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:34:52,039 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 04:34:52,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 04:34:52,039 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:34:52,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:34:52,040 INFO L85 PathProgramCache]: Analyzing trace with hash -2033055366, now seen corresponding path program 1 times [2023-04-01 04:34:52,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:34:52,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300453208] [2023-04-01 04:34:52,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:34:52,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:34:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:34:52,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 04:34:52,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:34:52,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300453208] [2023-04-01 04:34:52,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300453208] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 04:34:52,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 04:34:52,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 04:34:52,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095735287] [2023-04-01 04:34:52,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 04:34:52,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 04:34:52,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:34:52,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 04:34:52,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 04:34:52,129 INFO L87 Difference]: Start difference. First operand 63 states and 93 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 04:34:52,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:34:52,181 INFO L93 Difference]: Finished difference Result 126 states and 188 transitions. [2023-04-01 04:34:52,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 04:34:52,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 18 [2023-04-01 04:34:52,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:34:52,183 INFO L225 Difference]: With dead ends: 126 [2023-04-01 04:34:52,183 INFO L226 Difference]: Without dead ends: 69 [2023-04-01 04:34:52,184 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 04:34:52,185 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 29 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 04:34:52,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 134 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 04:34:52,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-04-01 04:34:52,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2023-04-01 04:34:52,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 63 states have (on average 1.492063492063492) internal successors, (94), 63 states have internal predecessors, (94), 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 04:34:52,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 97 transitions. [2023-04-01 04:34:52,193 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 97 transitions. Word has length 18 [2023-04-01 04:34:52,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:34:52,193 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 97 transitions. [2023-04-01 04:34:52,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 04:34:52,194 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 97 transitions. [2023-04-01 04:34:52,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-04-01 04:34:52,194 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:34:52,195 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 04:34:52,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 04:34:52,195 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:34:52,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:34:52,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1736220583, now seen corresponding path program 1 times [2023-04-01 04:34:52,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:34:52,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823850449] [2023-04-01 04:34:52,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:34:52,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:34:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:34:52,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 04:34:52,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:34:52,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823850449] [2023-04-01 04:34:52,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823850449] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 04:34:52,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 04:34:52,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 04:34:52,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338807121] [2023-04-01 04:34:52,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 04:34:52,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 04:34:52,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:34:52,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 04:34:52,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 04:34:52,245 INFO L87 Difference]: Start difference. First operand 67 states and 97 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 04:34:52,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:34:52,298 INFO L93 Difference]: Finished difference Result 185 states and 275 transitions. [2023-04-01 04:34:52,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 04:34:52,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 23 [2023-04-01 04:34:52,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:34:52,302 INFO L225 Difference]: With dead ends: 185 [2023-04-01 04:34:52,302 INFO L226 Difference]: Without dead ends: 120 [2023-04-01 04:34:52,303 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 04:34:52,304 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 56 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 04:34:52,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 188 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 04:34:52,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-04-01 04:34:52,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 111. [2023-04-01 04:34:52,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 107 states have (on average 1.4953271028037383) internal successors, (160), 107 states have internal predecessors, (160), 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 04:34:52,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 163 transitions. [2023-04-01 04:34:52,315 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 163 transitions. Word has length 23 [2023-04-01 04:34:52,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:34:52,315 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 163 transitions. [2023-04-01 04:34:52,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 04:34:52,316 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 163 transitions. [2023-04-01 04:34:52,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-04-01 04:34:52,317 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:34:52,317 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 04:34:52,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 04:34:52,317 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:34:52,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:34:52,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1712174170, now seen corresponding path program 1 times [2023-04-01 04:34:52,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:34:52,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512721952] [2023-04-01 04:34:52,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:34:52,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:34:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:34:52,382 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 04:34:52,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:34:52,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512721952] [2023-04-01 04:34:52,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512721952] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 04:34:52,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 04:34:52,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 04:34:52,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109015274] [2023-04-01 04:34:52,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 04:34:52,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 04:34:52,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:34:52,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 04:34:52,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 04:34:52,385 INFO L87 Difference]: Start difference. First operand 111 states and 163 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 04:34:52,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:34:52,411 INFO L93 Difference]: Finished difference Result 179 states and 265 transitions. [2023-04-01 04:34:52,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 04:34:52,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 30 [2023-04-01 04:34:52,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:34:52,414 INFO L225 Difference]: With dead ends: 179 [2023-04-01 04:34:52,414 INFO L226 Difference]: Without dead ends: 74 [2023-04-01 04:34:52,415 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 04:34:52,416 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 30 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 04:34:52,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 94 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 04:34:52,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-04-01 04:34:52,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-04-01 04:34:52,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 70 states have (on average 1.3857142857142857) internal successors, (97), 70 states have internal predecessors, (97), 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 04:34:52,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 100 transitions. [2023-04-01 04:34:52,423 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 100 transitions. Word has length 30 [2023-04-01 04:34:52,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:34:52,423 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 100 transitions. [2023-04-01 04:34:52,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 04:34:52,424 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 100 transitions. [2023-04-01 04:34:52,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-04-01 04:34:52,425 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:34:52,425 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 04:34:52,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 04:34:52,425 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:34:52,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:34:52,426 INFO L85 PathProgramCache]: Analyzing trace with hash -2099011769, now seen corresponding path program 1 times [2023-04-01 04:34:52,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:34:52,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930956659] [2023-04-01 04:34:52,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:34:52,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:34:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:34:52,569 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 04:34:52,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:34:52,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930956659] [2023-04-01 04:34:52,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930956659] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 04:34:52,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 04:34:52,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 04:34:52,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903937807] [2023-04-01 04:34:52,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 04:34:52,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 04:34:52,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:34:52,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 04:34:52,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 04:34:52,572 INFO L87 Difference]: Start difference. First operand 74 states and 100 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 04:34:52,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:34:52,633 INFO L93 Difference]: Finished difference Result 77 states and 103 transitions. [2023-04-01 04:34:52,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 04:34:52,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 36 [2023-04-01 04:34:52,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:34:52,634 INFO L225 Difference]: With dead ends: 77 [2023-04-01 04:34:52,634 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 04:34:52,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 04:34:52,646 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 17 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 04:34:52,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 142 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 04:34:52,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 04:34:52,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 04:34:52,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-01 04:34:52,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 04:34:52,647 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2023-04-01 04:34:52,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:34:52,647 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 04:34:52,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 04:34:52,648 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 04:34:52,648 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 04:34:52,650 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 04:34:52,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 04:34:52,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-01 04:34:52,723 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2023-04-01 04:34:52,723 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 4) no Hoare annotation was computed. [2023-04-01 04:34:52,723 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-01 04:34:52,723 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-01 04:34:52,724 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-01 04:34:52,724 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-01 04:34:52,724 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-01 04:34:52,724 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-01 04:34:52,724 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 15 346) no Hoare annotation was computed. [2023-04-01 04:34:52,724 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 51) no Hoare annotation was computed. [2023-04-01 04:34:52,725 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 15 346) no Hoare annotation was computed. [2023-04-01 04:34:52,726 INFO L899 garLoopResultBuilder]: For program point L38(lines 38 49) no Hoare annotation was computed. [2023-04-01 04:34:52,726 INFO L899 garLoopResultBuilder]: For program point L88(lines 88 103) no Hoare annotation was computed. [2023-04-01 04:34:52,726 INFO L899 garLoopResultBuilder]: For program point L55(lines 55 106) no Hoare annotation was computed. [2023-04-01 04:34:52,726 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 219) no Hoare annotation was computed. [2023-04-01 04:34:52,727 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 87) no Hoare annotation was computed. [2023-04-01 04:34:52,727 INFO L899 garLoopResultBuilder]: For program point L320(lines 320 335) no Hoare annotation was computed. [2023-04-01 04:34:52,727 INFO L899 garLoopResultBuilder]: For program point L188(lines 188 203) no Hoare annotation was computed. [2023-04-01 04:34:52,727 INFO L899 garLoopResultBuilder]: For program point L56(lines 56 71) no Hoare annotation was computed. [2023-04-01 04:34:52,727 INFO L899 garLoopResultBuilder]: For program point L304(lines 304 319) no Hoare annotation was computed. [2023-04-01 04:34:52,728 INFO L899 garLoopResultBuilder]: For program point L172(lines 172 187) no Hoare annotation was computed. [2023-04-01 04:34:52,728 INFO L899 garLoopResultBuilder]: For program point L288(lines 288 303) no Hoare annotation was computed. [2023-04-01 04:34:52,728 INFO L899 garLoopResultBuilder]: For program point L156(lines 156 171) no Hoare annotation was computed. [2023-04-01 04:34:52,728 INFO L899 garLoopResultBuilder]: For program point L90(lines 90 101) no Hoare annotation was computed. [2023-04-01 04:34:52,728 INFO L899 garLoopResultBuilder]: For program point L272(lines 272 287) no Hoare annotation was computed. [2023-04-01 04:34:52,728 INFO L899 garLoopResultBuilder]: For program point L206(lines 206 217) no Hoare annotation was computed. [2023-04-01 04:34:52,728 INFO L899 garLoopResultBuilder]: For program point L140(lines 140 155) no Hoare annotation was computed. [2023-04-01 04:34:52,728 INFO L899 garLoopResultBuilder]: For program point L107(lines 107 222) no Hoare annotation was computed. [2023-04-01 04:34:52,728 INFO L899 garLoopResultBuilder]: For program point L74(lines 74 85) no Hoare annotation was computed. [2023-04-01 04:34:52,728 INFO L899 garLoopResultBuilder]: For program point L322(lines 322 333) no Hoare annotation was computed. [2023-04-01 04:34:52,729 INFO L899 garLoopResultBuilder]: For program point L256(lines 256 271) no Hoare annotation was computed. [2023-04-01 04:34:52,729 INFO L899 garLoopResultBuilder]: For program point L223(lines 223 338) no Hoare annotation was computed. [2023-04-01 04:34:52,729 INFO L899 garLoopResultBuilder]: For program point L190(lines 190 201) no Hoare annotation was computed. [2023-04-01 04:34:52,729 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 139) no Hoare annotation was computed. [2023-04-01 04:34:52,729 INFO L899 garLoopResultBuilder]: For program point L58(lines 58 69) no Hoare annotation was computed. [2023-04-01 04:34:52,730 INFO L895 garLoopResultBuilder]: At program point L25-2(lines 25 341) the Hoare annotation is: (and (= main_~q~0 0) (= main_~this_sink~0 0)) [2023-04-01 04:34:52,730 INFO L899 garLoopResultBuilder]: For program point L25-3(lines 25 341) no Hoare annotation was computed. [2023-04-01 04:34:52,730 INFO L899 garLoopResultBuilder]: For program point L306(lines 306 317) no Hoare annotation was computed. [2023-04-01 04:34:52,730 INFO L899 garLoopResultBuilder]: For program point L240(lines 240 255) no Hoare annotation was computed. [2023-04-01 04:34:52,731 INFO L899 garLoopResultBuilder]: For program point L174(lines 174 185) no Hoare annotation was computed. [2023-04-01 04:34:52,731 INFO L899 garLoopResultBuilder]: For program point L108(lines 108 123) no Hoare annotation was computed. [2023-04-01 04:34:52,731 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 44) no Hoare annotation was computed. [2023-04-01 04:34:52,731 INFO L899 garLoopResultBuilder]: For program point L290(lines 290 301) no Hoare annotation was computed. [2023-04-01 04:34:52,731 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 239) no Hoare annotation was computed. [2023-04-01 04:34:52,732 INFO L895 garLoopResultBuilder]: At program point L290-2(lines 25 341) the Hoare annotation is: (or (and (= main_~q~0 3) (or (<= 1 main_~this_sink~0) (<= (+ main_~this_sink~0 1) 0))) (and (= main_~q~0 2) (= main_~this_sink~0 0)) (= main_~q~0 0)) [2023-04-01 04:34:52,732 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 169) no Hoare annotation was computed. [2023-04-01 04:34:52,732 INFO L899 garLoopResultBuilder]: For program point L274(lines 274 285) no Hoare annotation was computed. [2023-04-01 04:34:52,732 INFO L899 garLoopResultBuilder]: For program point L142(lines 142 153) no Hoare annotation was computed. [2023-04-01 04:34:52,732 INFO L899 garLoopResultBuilder]: For program point L258(lines 258 269) no Hoare annotation was computed. [2023-04-01 04:34:52,732 INFO L899 garLoopResultBuilder]: For program point L126(lines 126 137) no Hoare annotation was computed. [2023-04-01 04:34:52,733 INFO L899 garLoopResultBuilder]: For program point L242(lines 242 253) no Hoare annotation was computed. [2023-04-01 04:34:52,733 INFO L899 garLoopResultBuilder]: For program point L110(lines 110 121) no Hoare annotation was computed. [2023-04-01 04:34:52,733 INFO L899 garLoopResultBuilder]: For program point L226(lines 226 237) no Hoare annotation was computed. [2023-04-01 04:34:52,733 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 96) no Hoare annotation was computed. [2023-04-01 04:34:52,733 INFO L899 garLoopResultBuilder]: For program point L210(lines 210 212) no Hoare annotation was computed. [2023-04-01 04:34:52,733 INFO L899 garLoopResultBuilder]: For program point L78(lines 78 80) no Hoare annotation was computed. [2023-04-01 04:34:52,733 INFO L899 garLoopResultBuilder]: For program point L326(lines 326 328) no Hoare annotation was computed. [2023-04-01 04:34:52,734 INFO L899 garLoopResultBuilder]: For program point L194(lines 194 196) no Hoare annotation was computed. [2023-04-01 04:34:52,734 INFO L899 garLoopResultBuilder]: For program point L62(lines 62 64) no Hoare annotation was computed. [2023-04-01 04:34:52,734 INFO L899 garLoopResultBuilder]: For program point L310(lines 310 312) no Hoare annotation was computed. [2023-04-01 04:34:52,734 INFO L899 garLoopResultBuilder]: For program point L178(lines 178 180) no Hoare annotation was computed. [2023-04-01 04:34:52,734 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 15 346) the Hoare annotation is: true [2023-04-01 04:34:52,734 INFO L899 garLoopResultBuilder]: For program point L294(lines 294 296) no Hoare annotation was computed. [2023-04-01 04:34:52,735 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 164) no Hoare annotation was computed. [2023-04-01 04:34:52,735 INFO L899 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 345) no Hoare annotation was computed. [2023-04-01 04:34:52,735 INFO L899 garLoopResultBuilder]: For program point L278(lines 278 280) no Hoare annotation was computed. [2023-04-01 04:34:52,736 INFO L899 garLoopResultBuilder]: For program point L146(lines 146 148) no Hoare annotation was computed. [2023-04-01 04:34:52,736 INFO L899 garLoopResultBuilder]: For program point L262(lines 262 264) no Hoare annotation was computed. [2023-04-01 04:34:52,736 INFO L899 garLoopResultBuilder]: For program point L130(lines 130 132) no Hoare annotation was computed. [2023-04-01 04:34:52,736 INFO L899 garLoopResultBuilder]: For program point L246(lines 246 248) no Hoare annotation was computed. [2023-04-01 04:34:52,736 INFO L899 garLoopResultBuilder]: For program point L114(lines 114 116) no Hoare annotation was computed. [2023-04-01 04:34:52,737 INFO L899 garLoopResultBuilder]: For program point L230(lines 230 232) no Hoare annotation was computed. [2023-04-01 04:34:52,738 INFO L895 garLoopResultBuilder]: At program point ERROR(lines 15 346) the Hoare annotation is: false [2023-04-01 04:34:52,740 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 54) no Hoare annotation was computed. [2023-04-01 04:34:52,742 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-04-01 04:34:52,749 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 04:34:52,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 04:34:52 BoogieIcfgContainer [2023-04-01 04:34:52,772 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 04:34:52,773 INFO L158 Benchmark]: Toolchain (without parser) took 2042.90ms. Allocated memory is still 229.6MB. Free memory was 182.5MB in the beginning and 131.0MB in the end (delta: 51.5MB). Peak memory consumption was 52.5MB. Max. memory is 8.0GB. [2023-04-01 04:34:52,773 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 190.8MB. Free memory was 134.5MB in the beginning and 134.3MB in the end (delta: 155.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 04:34:52,773 INFO L158 Benchmark]: CACSL2BoogieTranslator took 264.23ms. Allocated memory is still 229.6MB. Free memory was 182.0MB in the beginning and 169.9MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-04-01 04:34:52,773 INFO L158 Benchmark]: Boogie Preprocessor took 33.70ms. Allocated memory is still 229.6MB. Free memory was 169.9MB in the beginning and 167.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-01 04:34:52,774 INFO L158 Benchmark]: RCFGBuilder took 417.82ms. Allocated memory is still 229.6MB. Free memory was 167.8MB in the beginning and 148.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-04-01 04:34:52,774 INFO L158 Benchmark]: TraceAbstraction took 1311.74ms. Allocated memory is still 229.6MB. Free memory was 148.4MB in the beginning and 131.0MB in the end (delta: 17.4MB). Peak memory consumption was 17.9MB. Max. memory is 8.0GB. [2023-04-01 04:34:52,776 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 190.8MB. Free memory was 134.5MB in the beginning and 134.3MB in the end (delta: 155.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 264.23ms. Allocated memory is still 229.6MB. Free memory was 182.0MB in the beginning and 169.9MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.70ms. Allocated memory is still 229.6MB. Free memory was 169.9MB in the beginning and 167.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 417.82ms. Allocated memory is still 229.6MB. Free memory was 167.8MB in the beginning and 148.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 1311.74ms. Allocated memory is still 229.6MB. Free memory was 148.4MB in the beginning and 131.0MB in the end (delta: 17.4MB). Peak memory consumption was 17.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 345]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 136 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 136 mSDsluCounter, 819 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 294 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 93 IncrementalHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 525 mSDtfsCounter, 93 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred in iteration=4, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 13 NumberOfFragments, 36 HoareAnnotationTreeSize, 7 FomulaSimplifications, 7 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 38 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 126 ConstructedInterpolants, 0 QuantifiedInterpolants, 270 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 19/19 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((q == 3 && (1 <= this_sink || this_sink + 1 <= 0)) || (q == 2 && this_sink == 0)) || q == 0 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: q == 0 && this_sink == 0 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2023-04-01 04:34:52,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...