/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 04:59:44,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 04:59:44,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 04:59:44,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 04:59:44,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 04:59:44,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 04:59:44,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 04:59:44,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 04:59:44,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 04:59:44,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 04:59:44,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 04:59:44,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 04:59:44,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 04:59:44,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 04:59:44,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 04:59:44,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 04:59:44,967 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 04:59:44,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 04:59:44,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 04:59:44,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 04:59:44,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 04:59:44,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 04:59:44,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 04:59:44,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 04:59:44,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 04:59:44,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 04:59:44,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 04:59:44,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 04:59:44,994 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 04:59:45,019 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 04:59:45,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 04:59:45,020 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 04:59:45,020 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 04:59:45,020 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 04:59:45,021 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 04:59:45,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 04:59:45,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 04:59:45,021 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 04:59:45,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 04:59:45,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 04:59:45,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 04:59:45,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 04:59:45,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 04:59:45,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 04:59:45,022 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 04:59:45,022 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 04:59:45,022 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 04:59:45,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 04:59:45,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 04:59:45,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 04:59:45,023 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 04:59:45,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 04:59:45,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:59:45,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 04:59:45,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 04:59:45,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 04:59:45,024 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 04:59:45,025 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 04:59:45,025 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 04:59:45,025 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 04:59:45,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 04:59:45,025 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 04:59:45,025 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 04:59:45,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 04:59:45,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 04:59:45,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 04:59:45,254 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 04:59:45,254 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 04:59:45,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label20.c [2022-01-10 04:59:45,310 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00c9013a3/bc4b58bb2ba949f888555c2e24546282/FLAGff545937d [2022-01-10 04:59:45,739 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 04:59:45,740 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label20.c [2022-01-10 04:59:45,749 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00c9013a3/bc4b58bb2ba949f888555c2e24546282/FLAGff545937d [2022-01-10 04:59:46,034 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00c9013a3/bc4b58bb2ba949f888555c2e24546282 [2022-01-10 04:59:46,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 04:59:46,036 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 04:59:46,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 04:59:46,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 04:59:46,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 04:59:46,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:59:46" (1/1) ... [2022-01-10 04:59:46,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f4516bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:46, skipping insertion in model container [2022-01-10 04:59:46,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:59:46" (1/1) ... [2022-01-10 04:59:46,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 04:59:46,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:59:46,201 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label20.c[1455,1468] [2022-01-10 04:59:46,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:59:46,414 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 04:59:46,422 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label20.c[1455,1468] [2022-01-10 04:59:46,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:59:46,536 INFO L208 MainTranslator]: Completed translation [2022-01-10 04:59:46,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:46 WrapperNode [2022-01-10 04:59:46,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 04:59:46,538 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 04:59:46,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 04:59:46,538 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 04:59:46,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:46" (1/1) ... [2022-01-10 04:59:46,570 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:46" (1/1) ... [2022-01-10 04:59:46,645 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 997 [2022-01-10 04:59:46,645 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 04:59:46,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 04:59:46,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 04:59:46,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 04:59:46,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:46" (1/1) ... [2022-01-10 04:59:46,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:46" (1/1) ... [2022-01-10 04:59:46,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:46" (1/1) ... [2022-01-10 04:59:46,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:46" (1/1) ... [2022-01-10 04:59:46,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:46" (1/1) ... [2022-01-10 04:59:46,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:46" (1/1) ... [2022-01-10 04:59:46,700 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:46" (1/1) ... [2022-01-10 04:59:46,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 04:59:46,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 04:59:46,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 04:59:46,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 04:59:46,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:46" (1/1) ... [2022-01-10 04:59:46,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:59:46,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 04:59:46,756 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) [2022-01-10 04:59:46,759 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 [2022-01-10 04:59:46,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 04:59:46,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 04:59:46,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 04:59:46,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 04:59:46,846 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 04:59:46,847 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 04:59:52,848 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 04:59:52,854 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 04:59:52,854 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 04:59:52,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:59:52 BoogieIcfgContainer [2022-01-10 04:59:52,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 04:59:52,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 04:59:52,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 04:59:52,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 04:59:52,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:59:46" (1/3) ... [2022-01-10 04:59:52,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c16c052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:59:52, skipping insertion in model container [2022-01-10 04:59:52,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:46" (2/3) ... [2022-01-10 04:59:52,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c16c052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:59:52, skipping insertion in model container [2022-01-10 04:59:52,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:59:52" (3/3) ... [2022-01-10 04:59:52,860 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label20.c [2022-01-10 04:59:52,864 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 04:59:52,864 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 04:59:52,906 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 04:59:52,918 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 04:59:52,918 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 04:59:52,936 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 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) [2022-01-10 04:59:52,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 04:59:52,940 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:59:52,940 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:59:52,941 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:59:52,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:59:52,944 INFO L85 PathProgramCache]: Analyzing trace with hash 647015545, now seen corresponding path program 1 times [2022-01-10 04:59:52,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:59:52,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1067839209] [2022-01-10 04:59:52,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:59:52,952 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:59:52,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:59:52,954 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:59:52,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 04:59:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:59:53,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:59:53,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:59:53,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:59:53,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:59:53,100 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:59:53,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1067839209] [2022-01-10 04:59:53,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1067839209] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:59:53,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:59:53,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:59:53,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476432828] [2022-01-10 04:59:53,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:59:53,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:59:53,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:59:53,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:59:53,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:59:53,124 INFO L87 Difference]: Start difference. First operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 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) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-01-10 05:00:00,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:00:00,329 INFO L93 Difference]: Finished difference Result 758 states and 1342 transitions. [2022-01-10 05:00:00,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:00:00,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) Word has length 9 [2022-01-10 05:00:00,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:00:00,347 INFO L225 Difference]: With dead ends: 758 [2022-01-10 05:00:00,347 INFO L226 Difference]: Without dead ends: 410 [2022-01-10 05:00:00,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:00:00,356 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 216 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-01-10 05:00:00,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 220 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-01-10 05:00:00,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-01-10 05:00:00,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2022-01-10 05:00:00,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 1.4572127139364304) internal successors, (596), 409 states have internal predecessors, (596), 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) [2022-01-10 05:00:00,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 596 transitions. [2022-01-10 05:00:00,409 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 596 transitions. Word has length 9 [2022-01-10 05:00:00,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:00:00,410 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 596 transitions. [2022-01-10 05:00:00,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-01-10 05:00:00,410 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 596 transitions. [2022-01-10 05:00:00,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 05:00:00,412 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:00:00,412 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:00:00,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 05:00:00,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:00:00,619 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:00:00,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:00:00,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1481538176, now seen corresponding path program 1 times [2022-01-10 05:00:00,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:00:00,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429064238] [2022-01-10 05:00:00,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:00:00,624 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:00:00,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:00:00,626 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:00:00,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 05:00:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:00:00,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:00:00,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:00:00,974 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:00:00,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:00:00,975 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:00:00,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429064238] [2022-01-10 05:00:00,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429064238] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:00:00,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:00:00,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:00:00,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27301303] [2022-01-10 05:00:00,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:00:00,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:00:00,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:00:00,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:00:00,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:00:00,983 INFO L87 Difference]: Start difference. First operand 410 states and 596 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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) [2022-01-10 05:00:10,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:00:10,005 INFO L93 Difference]: Finished difference Result 1202 states and 1754 transitions. [2022-01-10 05:00:10,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:00:10,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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) Word has length 77 [2022-01-10 05:00:10,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:00:10,016 INFO L225 Difference]: With dead ends: 1202 [2022-01-10 05:00:10,016 INFO L226 Difference]: Without dead ends: 794 [2022-01-10 05:00:10,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:00:10,018 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 133 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-01-10 05:00:10,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 186 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-01-10 05:00:10,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2022-01-10 05:00:10,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 782. [2022-01-10 05:00:10,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 781 states have (on average 1.3482714468629962) internal successors, (1053), 781 states have internal predecessors, (1053), 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) [2022-01-10 05:00:10,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1053 transitions. [2022-01-10 05:00:10,068 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1053 transitions. Word has length 77 [2022-01-10 05:00:10,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:00:10,069 INFO L470 AbstractCegarLoop]: Abstraction has 782 states and 1053 transitions. [2022-01-10 05:00:10,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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) [2022-01-10 05:00:10,069 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1053 transitions. [2022-01-10 05:00:10,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 05:00:10,070 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:00:10,070 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:00:10,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 05:00:10,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:00:10,272 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:00:10,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:00:10,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1295595924, now seen corresponding path program 1 times [2022-01-10 05:00:10,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:00:10,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361978914] [2022-01-10 05:00:10,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:00:10,274 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:00:10,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:00:10,275 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:00:10,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 05:00:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:00:10,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:00:10,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:00:10,526 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:00:10,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:00:10,527 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:00:10,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361978914] [2022-01-10 05:00:10,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1361978914] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:00:10,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:00:10,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:00:10,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683365324] [2022-01-10 05:00:10,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:00:10,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:00:10,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:00:10,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:00:10,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:00:10,528 INFO L87 Difference]: Start difference. First operand 782 states and 1053 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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) [2022-01-10 05:00:18,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:00:18,173 INFO L93 Difference]: Finished difference Result 1931 states and 2546 transitions. [2022-01-10 05:00:18,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:00:18,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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) Word has length 85 [2022-01-10 05:00:18,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:00:18,197 INFO L225 Difference]: With dead ends: 1931 [2022-01-10 05:00:18,197 INFO L226 Difference]: Without dead ends: 1151 [2022-01-10 05:00:18,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:00:18,201 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 112 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-01-10 05:00:18,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 194 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-01-10 05:00:18,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2022-01-10 05:00:18,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1150. [2022-01-10 05:00:18,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1149 states have (on average 1.257615317667537) internal successors, (1445), 1149 states have internal predecessors, (1445), 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) [2022-01-10 05:00:18,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1445 transitions. [2022-01-10 05:00:18,227 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1445 transitions. Word has length 85 [2022-01-10 05:00:18,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:00:18,229 INFO L470 AbstractCegarLoop]: Abstraction has 1150 states and 1445 transitions. [2022-01-10 05:00:18,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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) [2022-01-10 05:00:18,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1445 transitions. [2022-01-10 05:00:18,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-10 05:00:18,237 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:00:18,237 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:00:18,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 05:00:18,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:00:18,449 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:00:18,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:00:18,450 INFO L85 PathProgramCache]: Analyzing trace with hash 569597349, now seen corresponding path program 1 times [2022-01-10 05:00:18,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:00:18,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1753175600] [2022-01-10 05:00:18,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:00:18,451 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:00:18,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:00:18,452 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:00:18,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 05:00:18,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:00:18,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:00:18,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:00:18,723 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:00:18,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:00:18,723 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:00:18,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1753175600] [2022-01-10 05:00:18,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1753175600] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:00:18,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:00:18,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 05:00:18,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975615980] [2022-01-10 05:00:18,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:00:18,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:00:18,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:00:18,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:00:18,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:00:18,726 INFO L87 Difference]: Start difference. First operand 1150 states and 1445 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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) [2022-01-10 05:00:26,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:00:26,578 INFO L93 Difference]: Finished difference Result 1948 states and 2635 transitions. [2022-01-10 05:00:26,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:00:26,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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) Word has length 136 [2022-01-10 05:00:26,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:00:26,591 INFO L225 Difference]: With dead ends: 1948 [2022-01-10 05:00:26,591 INFO L226 Difference]: Without dead ends: 1542 [2022-01-10 05:00:26,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:00:26,596 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 226 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-01-10 05:00:26,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 322 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-01-10 05:00:26,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2022-01-10 05:00:26,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1539. [2022-01-10 05:00:26,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1539 states, 1538 states have (on average 1.271781534460338) internal successors, (1956), 1538 states have internal predecessors, (1956), 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) [2022-01-10 05:00:26,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 1956 transitions. [2022-01-10 05:00:26,621 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 1956 transitions. Word has length 136 [2022-01-10 05:00:26,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:00:26,622 INFO L470 AbstractCegarLoop]: Abstraction has 1539 states and 1956 transitions. [2022-01-10 05:00:26,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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) [2022-01-10 05:00:26,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 1956 transitions. [2022-01-10 05:00:26,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 05:00:26,623 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:00:26,624 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:00:26,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 05:00:26,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:00:26,831 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:00:26,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:00:26,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1727211453, now seen corresponding path program 1 times [2022-01-10 05:00:26,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:00:26,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1592240109] [2022-01-10 05:00:26,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:00:26,833 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:00:26,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:00:26,834 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:00:26,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 05:00:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:00:26,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:00:26,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:00:27,265 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:00:27,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:00:27,266 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:00:27,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1592240109] [2022-01-10 05:00:27,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1592240109] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:00:27,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:00:27,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 05:00:27,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583343511] [2022-01-10 05:00:27,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:00:27,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:00:27,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:00:27,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:00:27,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:00:27,267 INFO L87 Difference]: Start difference. First operand 1539 states and 1956 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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) [2022-01-10 05:00:33,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:00:33,655 INFO L93 Difference]: Finished difference Result 3279 states and 4347 transitions. [2022-01-10 05:00:33,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:00:33,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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) Word has length 189 [2022-01-10 05:00:33,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:00:33,668 INFO L225 Difference]: With dead ends: 3279 [2022-01-10 05:00:33,668 INFO L226 Difference]: Without dead ends: 2110 [2022-01-10 05:00:33,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:00:33,670 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 136 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-01-10 05:00:33,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 340 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-01-10 05:00:33,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2022-01-10 05:00:33,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 2097. [2022-01-10 05:00:33,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2097 states, 2096 states have (on average 1.2538167938931297) internal successors, (2628), 2096 states have internal predecessors, (2628), 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) [2022-01-10 05:00:33,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2097 states to 2097 states and 2628 transitions. [2022-01-10 05:00:33,695 INFO L78 Accepts]: Start accepts. Automaton has 2097 states and 2628 transitions. Word has length 189 [2022-01-10 05:00:33,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:00:33,696 INFO L470 AbstractCegarLoop]: Abstraction has 2097 states and 2628 transitions. [2022-01-10 05:00:33,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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) [2022-01-10 05:00:33,696 INFO L276 IsEmpty]: Start isEmpty. Operand 2097 states and 2628 transitions. [2022-01-10 05:00:33,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 05:00:33,697 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:00:33,697 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:00:33,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 05:00:33,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:00:33,907 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:00:33,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:00:33,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1443867709, now seen corresponding path program 1 times [2022-01-10 05:00:33,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:00:33,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606318765] [2022-01-10 05:00:33,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:00:33,908 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:00:33,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:00:33,909 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:00:33,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 05:00:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:00:34,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 05:00:34,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:00:35,213 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 13 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:00:35,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 05:00:37,846 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:00:37,846 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:00:37,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606318765] [2022-01-10 05:00:37,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [606318765] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 05:00:37,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 05:00:37,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-10 05:00:37,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009496023] [2022-01-10 05:00:37,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:00:37,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:00:37,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:00:37,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:00:37,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 05:00:37,848 INFO L87 Difference]: Start difference. First operand 2097 states and 2628 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 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)