/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/Problem03_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 04:20:49,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 04:20:49,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 04:20:49,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 04:20:49,477 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 04:20:49,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 04:20:49,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 04:20:49,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 04:20:49,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 04:20:49,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 04:20:49,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 04:20:49,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 04:20:49,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 04:20:49,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 04:20:49,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 04:20:49,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 04:20:49,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 04:20:49,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 04:20:49,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 04:20:49,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 04:20:49,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 04:20:49,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 04:20:49,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 04:20:49,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 04:20:49,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 04:20:49,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 04:20:49,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 04:20:49,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 04:20:49,514 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 04:20:49,526 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 04:20:49,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 04:20:49,526 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 04:20:49,526 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 04:20:49,527 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 04:20:49,527 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 04:20:49,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 04:20:49,527 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 04:20:49,528 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 04:20:49,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 04:20:49,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 04:20:49,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 04:20:49,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 04:20:49,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 04:20:49,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 04:20:49,528 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 04:20:49,528 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 04:20:49,529 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 04:20:49,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 04:20:49,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 04:20:49,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 04:20:49,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 04:20:49,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 04:20:49,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:20:49,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 04:20:49,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 04:20:49,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 04:20:49,530 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 04:20:49,530 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 04:20:49,530 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 04:20:49,530 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 04:20:49,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 04:20:49,530 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 04:20:49,530 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 04:20:49,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 04:20:49,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 04:20:49,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 04:20:49,726 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 04:20:49,731 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 04:20:49,732 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label23.c [2022-01-10 04:20:49,784 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6efae43b8/40e3beb9fe304820b003cc454e728d14/FLAGf07dcd073 [2022-01-10 04:20:50,266 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 04:20:50,266 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label23.c [2022-01-10 04:20:50,286 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6efae43b8/40e3beb9fe304820b003cc454e728d14/FLAGf07dcd073 [2022-01-10 04:20:50,301 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6efae43b8/40e3beb9fe304820b003cc454e728d14 [2022-01-10 04:20:50,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 04:20:50,305 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 04:20:50,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 04:20:50,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 04:20:50,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 04:20:50,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:20:50" (1/1) ... [2022-01-10 04:20:50,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a6670f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:20:50, skipping insertion in model container [2022-01-10 04:20:50,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:20:50" (1/1) ... [2022-01-10 04:20:50,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 04:20:50,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:20:50,764 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/Problem03_label23.c[57306,57319] [2022-01-10 04:20:50,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:20:50,801 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 04:20:50,956 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/Problem03_label23.c[57306,57319] [2022-01-10 04:20:50,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:20:50,980 INFO L208 MainTranslator]: Completed translation [2022-01-10 04:20:50,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:20:50 WrapperNode [2022-01-10 04:20:50,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 04:20:50,981 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 04:20:50,981 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 04:20:50,981 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 04:20:50,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:20:50" (1/1) ... [2022-01-10 04:20:51,013 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:20:50" (1/1) ... [2022-01-10 04:20:51,101 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1769 [2022-01-10 04:20:51,101 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 04:20:51,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 04:20:51,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 04:20:51,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 04:20:51,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:20:50" (1/1) ... [2022-01-10 04:20:51,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:20:50" (1/1) ... [2022-01-10 04:20:51,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:20:50" (1/1) ... [2022-01-10 04:20:51,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:20:50" (1/1) ... [2022-01-10 04:20:51,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:20:50" (1/1) ... [2022-01-10 04:20:51,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:20:50" (1/1) ... [2022-01-10 04:20:51,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:20:50" (1/1) ... [2022-01-10 04:20:51,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 04:20:51,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 04:20:51,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 04:20:51,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 04:20:51,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:20:50" (1/1) ... [2022-01-10 04:20:51,206 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:20:51,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 04:20:51,245 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 04:20:51,251 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 04:20:51,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 04:20:51,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 04:20:51,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 04:20:51,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 04:20:51,376 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 04:20:51,377 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 04:20:52,924 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 04:20:52,931 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 04:20:52,931 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 04:20:52,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:20:52 BoogieIcfgContainer [2022-01-10 04:20:52,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 04:20:52,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 04:20:52,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 04:20:52,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 04:20:52,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:20:50" (1/3) ... [2022-01-10 04:20:52,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439d6dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:20:52, skipping insertion in model container [2022-01-10 04:20:52,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:20:50" (2/3) ... [2022-01-10 04:20:52,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439d6dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:20:52, skipping insertion in model container [2022-01-10 04:20:52,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:20:52" (3/3) ... [2022-01-10 04:20:52,939 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label23.c [2022-01-10 04:20:52,942 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 04:20:52,942 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 04:20:52,983 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 04:20:52,989 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 04:20:52,989 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 04:20:53,013 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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 04:20:53,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 04:20:53,031 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:20:53,032 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:20:53,032 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:20:53,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:20:53,037 INFO L85 PathProgramCache]: Analyzing trace with hash 552287235, now seen corresponding path program 1 times [2022-01-10 04:20:53,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:20:53,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354629304] [2022-01-10 04:20:53,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:20:53,051 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:20:53,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:20:53,053 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 04:20:53,054 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 04:20:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:20:53,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-10 04:20:53,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:21:04,846 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 04:21:04,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:21:04,847 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:21:04,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354629304] [2022-01-10 04:21:04,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354629304] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:21:04,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:21:04,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 04:21:04,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897199600] [2022-01-10 04:21:04,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:21:04,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 04:21:04,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:21:04,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 04:21:04,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-10 04:21:04,883 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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 9 states, 9 states have (on average 19.0) internal successors, (171), 8 states have internal predecessors, (171), 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 04:21:07,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:21:07,976 INFO L93 Difference]: Finished difference Result 718 states and 1265 transitions. [2022-01-10 04:21:07,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 04:21:07,983 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.0) internal successors, (171), 8 states have internal predecessors, (171), 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 171 [2022-01-10 04:21:07,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:21:07,997 INFO L225 Difference]: With dead ends: 718 [2022-01-10 04:21:07,997 INFO L226 Difference]: Without dead ends: 352 [2022-01-10 04:21:08,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-01-10 04:21:08,002 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 431 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 2445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 04:21:08,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 464 Invalid, 2445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2341 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-10 04:21:08,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-01-10 04:21:08,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2022-01-10 04:21:08,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 1.4586894586894588) internal successors, (512), 351 states have internal predecessors, (512), 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 04:21:08,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 512 transitions. [2022-01-10 04:21:08,046 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 512 transitions. Word has length 171 [2022-01-10 04:21:08,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:21:08,046 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 512 transitions. [2022-01-10 04:21:08,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.0) internal successors, (171), 8 states have internal predecessors, (171), 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 04:21:08,047 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 512 transitions. [2022-01-10 04:21:08,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-01-10 04:21:08,049 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:21:08,049 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:08,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 04:21:08,252 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 04:21:08,253 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:21:08,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:21:08,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1542621304, now seen corresponding path program 1 times [2022-01-10 04:21:08,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:21:08,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1132086817] [2022-01-10 04:21:08,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:21:08,255 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:21:08,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:21:08,256 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 04:21:08,259 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 04:21:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:21:08,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-10 04:21:08,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:21:20,859 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 04:21:20,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:21:20,859 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:21:20,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1132086817] [2022-01-10 04:21:20,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1132086817] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:21:20,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:21:20,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 04:21:20,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395228191] [2022-01-10 04:21:20,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:21:20,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 04:21:20,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:21:20,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 04:21:20,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-01-10 04:21:20,872 INFO L87 Difference]: Start difference. First operand 352 states and 512 transitions. Second operand has 10 states, 10 states have (on average 17.8) internal successors, (178), 9 states have internal predecessors, (178), 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 04:21:23,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:21:23,287 INFO L93 Difference]: Finished difference Result 730 states and 1182 transitions. [2022-01-10 04:21:23,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 04:21:23,287 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.8) internal successors, (178), 9 states have internal predecessors, (178), 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 178 [2022-01-10 04:21:23,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:21:23,291 INFO L225 Difference]: With dead ends: 730 [2022-01-10 04:21:23,291 INFO L226 Difference]: Without dead ends: 493 [2022-01-10 04:21:23,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-01-10 04:21:23,293 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 649 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 2169 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 2303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 2169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:21:23,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [649 Valid, 335 Invalid, 2303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 2169 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 04:21:23,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-01-10 04:21:23,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 493. [2022-01-10 04:21:23,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 492 states have (on average 1.339430894308943) internal successors, (659), 492 states have internal predecessors, (659), 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 04:21:23,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 659 transitions. [2022-01-10 04:21:23,310 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 659 transitions. Word has length 178 [2022-01-10 04:21:23,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:21:23,310 INFO L470 AbstractCegarLoop]: Abstraction has 493 states and 659 transitions. [2022-01-10 04:21:23,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.8) internal successors, (178), 9 states have internal predecessors, (178), 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 04:21:23,311 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 659 transitions. [2022-01-10 04:21:23,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-01-10 04:21:23,313 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:21:23,313 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:23,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-01-10 04:21:23,523 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 04:21:23,524 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:21:23,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:21:23,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1529135225, now seen corresponding path program 1 times [2022-01-10 04:21:23,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:21:23,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [568917727] [2022-01-10 04:21:23,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:21:23,526 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:21:23,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:21:23,527 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 04:21:23,529 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 04:21:23,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:21:23,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:21:23,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:21:23,895 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 04:21:23,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:21:23,895 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:21:23,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [568917727] [2022-01-10 04:21:23,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [568917727] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:21:23,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:21:23,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:21:23,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924897875] [2022-01-10 04:21:23,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:21:23,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:21:23,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:21:23,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:21:23,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:21:23,899 INFO L87 Difference]: Start difference. First operand 493 states and 659 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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 04:21:24,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:21:24,786 INFO L93 Difference]: Finished difference Result 951 states and 1414 transitions. [2022-01-10 04:21:24,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:21:24,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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 186 [2022-01-10 04:21:24,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:21:24,789 INFO L225 Difference]: With dead ends: 951 [2022-01-10 04:21:24,790 INFO L226 Difference]: Without dead ends: 714 [2022-01-10 04:21:24,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 184 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 04:21:24,791 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 107 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 04:21:24,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 277 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 04:21:24,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2022-01-10 04:21:24,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 712. [2022-01-10 04:21:24,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 711 states have (on average 1.3642756680731365) internal successors, (970), 711 states have internal predecessors, (970), 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 04:21:24,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 970 transitions. [2022-01-10 04:21:24,807 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 970 transitions. Word has length 186 [2022-01-10 04:21:24,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:21:24,807 INFO L470 AbstractCegarLoop]: Abstraction has 712 states and 970 transitions. [2022-01-10 04:21:24,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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 04:21:24,808 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 970 transitions. [2022-01-10 04:21:24,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-01-10 04:21:24,811 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:21:24,813 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:24,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-01-10 04:21:25,027 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 04:21:25,028 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:21:25,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:21:25,028 INFO L85 PathProgramCache]: Analyzing trace with hash 522709419, now seen corresponding path program 1 times [2022-01-10 04:21:25,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:21:25,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687695240] [2022-01-10 04:21:25,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:21:25,030 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:21:25,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:21:25,031 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 04:21:25,039 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 04:21:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:21:25,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:21:25,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:21:25,311 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 04:21:25,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:21:25,311 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:21:25,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687695240] [2022-01-10 04:21:25,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687695240] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:21:25,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:21:25,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:21:25,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605095276] [2022-01-10 04:21:25,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:21:25,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:21:25,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:21:25,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:21:25,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:21:25,316 INFO L87 Difference]: Start difference. First operand 712 states and 970 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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 04:21:26,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:21:26,189 INFO L93 Difference]: Finished difference Result 1578 states and 2313 transitions. [2022-01-10 04:21:26,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:21:26,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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 192 [2022-01-10 04:21:26,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:21:26,193 INFO L225 Difference]: With dead ends: 1578 [2022-01-10 04:21:26,193 INFO L226 Difference]: Without dead ends: 1122 [2022-01-10 04:21:26,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 190 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 04:21:26,194 INFO L933 BasicCegarLoop]: 298 mSDtfsCounter, 237 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 04:21:26,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 326 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 04:21:26,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2022-01-10 04:21:26,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1120. [2022-01-10 04:21:26,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1119 states have (on average 1.2975871313672922) internal successors, (1452), 1119 states have internal predecessors, (1452), 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 04:21:26,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 1452 transitions. [2022-01-10 04:21:26,210 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 1452 transitions. Word has length 192 [2022-01-10 04:21:26,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:21:26,210 INFO L470 AbstractCegarLoop]: Abstraction has 1120 states and 1452 transitions. [2022-01-10 04:21:26,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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 04:21:26,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 1452 transitions. [2022-01-10 04:21:26,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-01-10 04:21:26,212 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:21:26,213 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:26,219 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 04:21:26,419 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 04:21:26,420 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:21:26,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:21:26,420 INFO L85 PathProgramCache]: Analyzing trace with hash -275852577, now seen corresponding path program 1 times [2022-01-10 04:21:26,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:21:26,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961234071] [2022-01-10 04:21:26,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:21:26,422 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:21:26,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:21:26,423 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 04:21:26,423 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 04:21:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:21:26,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:21:26,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:21:26,726 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 04:21:26,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:21:26,726 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:21:26,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961234071] [2022-01-10 04:21:26,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961234071] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:21:26,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:21:26,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:21:26,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444232760] [2022-01-10 04:21:26,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:21:26,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:21:26,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:21:26,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:21:26,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:21:26,728 INFO L87 Difference]: Start difference. First operand 1120 states and 1452 transitions. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 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 04:21:27,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:21:27,750 INFO L93 Difference]: Finished difference Result 2774 states and 3723 transitions. [2022-01-10 04:21:27,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:21:27,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 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 196 [2022-01-10 04:21:27,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:21:27,755 INFO L225 Difference]: With dead ends: 2774 [2022-01-10 04:21:27,755 INFO L226 Difference]: Without dead ends: 1910 [2022-01-10 04:21:27,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:21:27,757 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 636 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 04:21:27,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [636 Valid, 55 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 04:21:27,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2022-01-10 04:21:27,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1906. [2022-01-10 04:21:27,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1906 states, 1905 states have (on average 1.236220472440945) internal successors, (2355), 1905 states have internal predecessors, (2355), 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 04:21:27,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 2355 transitions. [2022-01-10 04:21:27,786 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 2355 transitions. Word has length 196 [2022-01-10 04:21:27,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:21:27,787 INFO L470 AbstractCegarLoop]: Abstraction has 1906 states and 2355 transitions. [2022-01-10 04:21:27,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 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 04:21:27,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 2355 transitions. [2022-01-10 04:21:27,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-01-10 04:21:27,789 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:21:27,789 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:21:27,796 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 04:21:27,996 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 04:21:27,996 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:21:27,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:21:27,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1988323908, now seen corresponding path program 1 times [2022-01-10 04:21:27,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:21:27,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1691619942] [2022-01-10 04:21:27,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:21:27,998 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:21:27,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:21:28,000 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 04:21:28,000 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 04:21:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:21:28,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:21:28,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:21:28,322 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 04:21:28,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:21:28,322 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:21:28,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1691619942] [2022-01-10 04:21:28,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1691619942] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:21:28,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:21:28,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:21:28,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236387615] [2022-01-10 04:21:28,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:21:28,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:21:28,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:21:28,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:21:28,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:21:28,324 INFO L87 Difference]: Start difference. First operand 1906 states and 2355 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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 04:21:29,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:21:29,100 INFO L93 Difference]: Finished difference Result 4372 states and 5447 transitions. [2022-01-10 04:21:29,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:21:29,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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 198 [2022-01-10 04:21:29,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:21:29,107 INFO L225 Difference]: With dead ends: 4372 [2022-01-10 04:21:29,108 INFO L226 Difference]: Without dead ends: 2722 [2022-01-10 04:21:29,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 196 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 04:21:29,113 INFO L933 BasicCegarLoop]: 287 mSDtfsCounter, 201 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 04:21:29,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 302 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 04:21:29,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2722 states. [2022-01-10 04:21:29,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2722 to 2722. [2022-01-10 04:21:29,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2722 states, 2721 states have (on average 1.209114296214627) internal successors, (3290), 2721 states have internal predecessors, (3290), 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 04:21:29,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2722 states to 2722 states and 3290 transitions. [2022-01-10 04:21:29,143 INFO L78 Accepts]: Start accepts. Automaton has 2722 states and 3290 transitions. Word has length 198 [2022-01-10 04:21:29,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:21:29,144 INFO L470 AbstractCegarLoop]: Abstraction has 2722 states and 3290 transitions. [2022-01-10 04:21:29,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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 04:21:29,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2722 states and 3290 transitions. [2022-01-10 04:21:29,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-01-10 04:21:29,147 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:21:29,148 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:21:29,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 04:21:29,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:21:29,355 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:21:29,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:21:29,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1908766888, now seen corresponding path program 1 times [2022-01-10 04:21:29,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:21:29,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335816410] [2022-01-10 04:21:29,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:21:29,357 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:21:29,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:21:29,358 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:21:29,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 04:21:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:21:29,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:21:29,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:21:29,748 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 04:21:29,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:21:29,748 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:21:29,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335816410] [2022-01-10 04:21:29,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1335816410] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:21:29,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:21:29,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:21:29,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220627805] [2022-01-10 04:21:29,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:21:29,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:21:29,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:21:29,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:21:29,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:21:29,749 INFO L87 Difference]: Start difference. First operand 2722 states and 3290 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 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 04:21:30,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:21:30,548 INFO L93 Difference]: Finished difference Result 6407 states and 7987 transitions. [2022-01-10 04:21:30,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:21:30,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 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 211 [2022-01-10 04:21:30,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:21:30,556 INFO L225 Difference]: With dead ends: 6407 [2022-01-10 04:21:30,556 INFO L226 Difference]: Without dead ends: 3941 [2022-01-10 04:21:30,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 209 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 04:21:30,560 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 186 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 04:21:30,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 223 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 04:21:30,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3941 states. [2022-01-10 04:21:30,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3941 to 3940. [2022-01-10 04:21:30,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3940 states, 3939 states have (on average 1.167047473978167) internal successors, (4597), 3939 states have internal predecessors, (4597), 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 04:21:30,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3940 states to 3940 states and 4597 transitions. [2022-01-10 04:21:30,604 INFO L78 Accepts]: Start accepts. Automaton has 3940 states and 4597 transitions. Word has length 211 [2022-01-10 04:21:30,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:21:30,604 INFO L470 AbstractCegarLoop]: Abstraction has 3940 states and 4597 transitions. [2022-01-10 04:21:30,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 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 04:21:30,604 INFO L276 IsEmpty]: Start isEmpty. Operand 3940 states and 4597 transitions. [2022-01-10 04:21:30,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-01-10 04:21:30,629 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:21:30,629 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:30,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-01-10 04:21:30,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:21:30,835 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:21:30,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:21:30,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1411204955, now seen corresponding path program 1 times [2022-01-10 04:21:30,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:21:30,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2111721284] [2022-01-10 04:21:30,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:21:30,838 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:21:30,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:21:30,839 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:21:30,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 04:21:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:21:30,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:21:30,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:21:31,293 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 04:21:31,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:21:31,294 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:21:31,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2111721284] [2022-01-10 04:21:31,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2111721284] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:21:31,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:21:31,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:21:31,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088573941] [2022-01-10 04:21:31,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:21:31,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:21:31,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:21:31,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:21:31,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:21:31,295 INFO L87 Difference]: Start difference. First operand 3940 states and 4597 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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 04:21:32,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:21:32,105 INFO L93 Difference]: Finished difference Result 9658 states and 11300 transitions. [2022-01-10 04:21:32,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:21:32,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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 240 [2022-01-10 04:21:32,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:21:32,116 INFO L225 Difference]: With dead ends: 9658 [2022-01-10 04:21:32,117 INFO L226 Difference]: Without dead ends: 5556 [2022-01-10 04:21:32,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 238 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 04:21:32,120 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 166 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 04:21:32,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 295 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 04:21:32,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5556 states. [2022-01-10 04:21:32,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5556 to 5552. [2022-01-10 04:21:32,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5552 states, 5551 states have (on average 1.0927760763826337) internal successors, (6066), 5551 states have internal predecessors, (6066), 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 04:21:32,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5552 states to 5552 states and 6066 transitions. [2022-01-10 04:21:32,174 INFO L78 Accepts]: Start accepts. Automaton has 5552 states and 6066 transitions. Word has length 240 [2022-01-10 04:21:32,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:21:32,174 INFO L470 AbstractCegarLoop]: Abstraction has 5552 states and 6066 transitions. [2022-01-10 04:21:32,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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 04:21:32,175 INFO L276 IsEmpty]: Start isEmpty. Operand 5552 states and 6066 transitions. [2022-01-10 04:21:32,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-01-10 04:21:32,180 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:21:32,180 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:21:32,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 04:21:32,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:21:32,387 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:21:32,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:21:32,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1819824758, now seen corresponding path program 1 times [2022-01-10 04:21:32,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:21:32,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795316905] [2022-01-10 04:21:32,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:21:32,389 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:21:32,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:21:32,390 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:21:32,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 04:21:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:21:32,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:21:32,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:21:32,912 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:21:32,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:21:32,912 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:21:32,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795316905] [2022-01-10 04:21:32,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795316905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:21:32,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:21:32,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:21:32,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876049391] [2022-01-10 04:21:32,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:21:32,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:21:32,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:21:32,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:21:32,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:21:32,914 INFO L87 Difference]: Start difference. First operand 5552 states and 6066 transitions. Second operand has 4 states, 4 states have (on average 64.0) internal successors, (256), 3 states have internal predecessors, (256), 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 04:21:34,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:21:34,019 INFO L93 Difference]: Finished difference Result 13711 states and 15102 transitions. [2022-01-10 04:21:34,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:21:34,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 3 states have internal predecessors, (256), 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 256 [2022-01-10 04:21:34,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:21:34,037 INFO L225 Difference]: With dead ends: 13711 [2022-01-10 04:21:34,037 INFO L226 Difference]: Without dead ends: 8200 [2022-01-10 04:21:34,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:21:34,043 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 475 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 04:21:34,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 116 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 04:21:34,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8200 states. [2022-01-10 04:21:34,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8200 to 7988. [2022-01-10 04:21:34,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7988 states, 7987 states have (on average 1.1024164266933767) internal successors, (8805), 7987 states have internal predecessors, (8805), 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 04:21:34,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7988 states to 7988 states and 8805 transitions. [2022-01-10 04:21:34,137 INFO L78 Accepts]: Start accepts. Automaton has 7988 states and 8805 transitions. Word has length 256 [2022-01-10 04:21:34,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:21:34,137 INFO L470 AbstractCegarLoop]: Abstraction has 7988 states and 8805 transitions. [2022-01-10 04:21:34,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 3 states have internal predecessors, (256), 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 04:21:34,138 INFO L276 IsEmpty]: Start isEmpty. Operand 7988 states and 8805 transitions. [2022-01-10 04:21:34,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-01-10 04:21:34,145 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:21:34,145 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:34,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-01-10 04:21:34,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:21:34,353 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:21:34,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:21:34,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1293228608, now seen corresponding path program 1 times [2022-01-10 04:21:34,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:21:34,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980756585] [2022-01-10 04:21:34,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:21:34,355 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:21:34,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:21:34,356 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:21:34,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 04:21:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:21:34,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:21:34,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:21:34,965 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 04:21:34,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:21:34,965 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:21:34,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [980756585] [2022-01-10 04:21:34,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [980756585] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:21:34,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:21:34,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:21:34,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911982089] [2022-01-10 04:21:34,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:21:34,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:21:34,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:21:34,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:21:34,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:21:34,967 INFO L87 Difference]: Start difference. First operand 7988 states and 8805 transitions. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 2 states have internal predecessors, (271), 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 04:21:35,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:21:35,675 INFO L93 Difference]: Finished difference Result 16953 states and 18760 transitions. [2022-01-10 04:21:35,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:21:35,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 2 states have internal predecessors, (271), 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 273 [2022-01-10 04:21:35,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:21:35,693 INFO L225 Difference]: With dead ends: 16953 [2022-01-10 04:21:35,693 INFO L226 Difference]: Without dead ends: 9209 [2022-01-10 04:21:35,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 271 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 04:21:35,700 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 119 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 04:21:35,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 143 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 04:21:35,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9209 states. [2022-01-10 04:21:35,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9209 to 9206. [2022-01-10 04:21:35,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9206 states, 9205 states have (on average 1.0994024986420423) internal successors, (10120), 9205 states have internal predecessors, (10120), 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 04:21:35,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9206 states to 9206 states and 10120 transitions. [2022-01-10 04:21:35,795 INFO L78 Accepts]: Start accepts. Automaton has 9206 states and 10120 transitions. Word has length 273 [2022-01-10 04:21:35,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:21:35,795 INFO L470 AbstractCegarLoop]: Abstraction has 9206 states and 10120 transitions. [2022-01-10 04:21:35,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 2 states have internal predecessors, (271), 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 04:21:35,795 INFO L276 IsEmpty]: Start isEmpty. Operand 9206 states and 10120 transitions. [2022-01-10 04:21:35,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-01-10 04:21:35,802 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:21:35,802 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:35,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 04:21:36,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:21:36,010 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:21:36,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:21:36,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1303902526, now seen corresponding path program 1 times [2022-01-10 04:21:36,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:21:36,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779007723] [2022-01-10 04:21:36,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:21:36,012 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:21:36,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:21:36,013 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:21:36,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 04:21:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:21:36,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:21:36,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:21:36,407 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:21:36,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:21:36,407 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:21:36,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779007723] [2022-01-10 04:21:36,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [779007723] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:21:36,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:21:36,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:21:36,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160309368] [2022-01-10 04:21:36,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:21:36,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:21:36,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:21:36,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:21:36,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:21:36,408 INFO L87 Difference]: Start difference. First operand 9206 states and 10120 transitions. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 04:21:36,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:21:36,688 INFO L93 Difference]: Finished difference Result 26113 states and 28795 transitions. [2022-01-10 04:21:36,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:21:36,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 281 [2022-01-10 04:21:36,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:21:36,711 INFO L225 Difference]: With dead ends: 26113 [2022-01-10 04:21:36,711 INFO L226 Difference]: Without dead ends: 17151 [2022-01-10 04:21:36,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 279 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 04:21:36,721 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 290 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 04:21:36,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 500 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 04:21:36,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17151 states. [2022-01-10 04:21:36,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17151 to 16946. [2022-01-10 04:21:36,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16946 states, 16945 states have (on average 1.1024491000295071) internal successors, (18681), 16945 states have internal predecessors, (18681), 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 04:21:36,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16946 states to 16946 states and 18681 transitions. [2022-01-10 04:21:36,883 INFO L78 Accepts]: Start accepts. Automaton has 16946 states and 18681 transitions. Word has length 281 [2022-01-10 04:21:36,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:21:36,883 INFO L470 AbstractCegarLoop]: Abstraction has 16946 states and 18681 transitions. [2022-01-10 04:21:36,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 04:21:36,884 INFO L276 IsEmpty]: Start isEmpty. Operand 16946 states and 18681 transitions. [2022-01-10 04:21:36,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-01-10 04:21:36,892 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:21:36,892 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:36,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-01-10 04:21:37,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:21:37,098 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:21:37,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:21:37,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1851020641, now seen corresponding path program 1 times [2022-01-10 04:21:37,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:21:37,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603196215] [2022-01-10 04:21:37,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:21:37,101 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:21:37,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:21:37,102 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:21:37,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 04:21:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:21:37,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:21:37,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:21:37,491 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:21:37,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:21:37,491 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:21:37,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1603196215] [2022-01-10 04:21:37,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1603196215] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:21:37,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:21:37,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:21:37,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558733108] [2022-01-10 04:21:37,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:21:37,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:21:37,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:21:37,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:21:37,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:21:37,492 INFO L87 Difference]: Start difference. First operand 16946 states and 18681 transitions. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 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 04:21:38,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:21:38,236 INFO L93 Difference]: Finished difference Result 43596 states and 48110 transitions. [2022-01-10 04:21:38,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:21:38,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 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 282 [2022-01-10 04:21:38,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:21:38,271 INFO L225 Difference]: With dead ends: 43596 [2022-01-10 04:21:38,271 INFO L226 Difference]: Without dead ends: 26691 [2022-01-10 04:21:38,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 280 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 04:21:38,287 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 226 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 04:21:38,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 248 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 04:21:38,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26691 states. [2022-01-10 04:21:38,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26691 to 25877. [2022-01-10 04:21:38,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25877 states, 25876 states have (on average 1.0796877415365589) internal successors, (27938), 25876 states have internal predecessors, (27938), 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 04:21:38,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25877 states to 25877 states and 27938 transitions. [2022-01-10 04:21:38,580 INFO L78 Accepts]: Start accepts. Automaton has 25877 states and 27938 transitions. Word has length 282 [2022-01-10 04:21:38,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:21:38,580 INFO L470 AbstractCegarLoop]: Abstraction has 25877 states and 27938 transitions. [2022-01-10 04:21:38,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 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 04:21:38,581 INFO L276 IsEmpty]: Start isEmpty. Operand 25877 states and 27938 transitions. [2022-01-10 04:21:38,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2022-01-10 04:21:38,592 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:21:38,593 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 04:21:38,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 04:21:38,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:21:38,800 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:21:38,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:21:38,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1365008856, now seen corresponding path program 1 times [2022-01-10 04:21:38,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:21:38,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1719618317] [2022-01-10 04:21:38,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:21:38,802 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:21:38,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:21:38,803 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:21:38,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 04:21:38,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:21:38,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:21:38,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:21:39,634 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 04:21:39,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:21:39,635 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:21:39,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1719618317] [2022-01-10 04:21:39,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1719618317] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:21:39,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:21:39,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:21:39,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868947446] [2022-01-10 04:21:39,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:21:39,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:21:39,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:21:39,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:21:39,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:21:39,636 INFO L87 Difference]: Start difference. First operand 25877 states and 27938 transitions. Second operand has 4 states, 4 states have (on average 79.75) internal successors, (319), 3 states have internal predecessors, (319), 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 04:21:40,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:21:40,918 INFO L93 Difference]: Finished difference Result 62915 states and 68164 transitions. [2022-01-10 04:21:40,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:21:40,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.75) internal successors, (319), 3 states have internal predecessors, (319), 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 330 [2022-01-10 04:21:40,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:21:40,957 INFO L225 Difference]: With dead ends: 62915 [2022-01-10 04:21:40,958 INFO L226 Difference]: Without dead ends: 37282 [2022-01-10 04:21:40,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:21:40,965 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 431 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:21:40,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 215 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 04:21:40,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37282 states. [2022-01-10 04:21:41,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37282 to 34016. [2022-01-10 04:21:41,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34016 states, 34015 states have (on average 1.0724092312215199) internal successors, (36478), 34015 states have internal predecessors, (36478), 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 04:21:41,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34016 states to 34016 states and 36478 transitions. [2022-01-10 04:21:41,349 INFO L78 Accepts]: Start accepts. Automaton has 34016 states and 36478 transitions. Word has length 330 [2022-01-10 04:21:41,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:21:41,350 INFO L470 AbstractCegarLoop]: Abstraction has 34016 states and 36478 transitions. [2022-01-10 04:21:41,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.75) internal successors, (319), 3 states have internal predecessors, (319), 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 04:21:41,350 INFO L276 IsEmpty]: Start isEmpty. Operand 34016 states and 36478 transitions. [2022-01-10 04:21:41,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2022-01-10 04:21:41,366 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:21:41,366 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:41,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 04:21:41,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:21:41,574 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:21:41,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:21:41,575 INFO L85 PathProgramCache]: Analyzing trace with hash 491518876, now seen corresponding path program 1 times [2022-01-10 04:21:41,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:21:41,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [571229925] [2022-01-10 04:21:41,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:21:41,577 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:21:41,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:21:41,578 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:21:41,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 04:21:41,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:21:41,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:21:41,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:21:42,110 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-01-10 04:21:42,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:21:42,110 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:21:42,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [571229925] [2022-01-10 04:21:42,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [571229925] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:21:42,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:21:42,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:21:42,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887746018] [2022-01-10 04:21:42,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:21:42,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:21:42,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:21:42,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:21:42,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:21:42,112 INFO L87 Difference]: Start difference. First operand 34016 states and 36478 transitions. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 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 04:21:42,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:21:42,888 INFO L93 Difference]: Finished difference Result 59257 states and 63538 transitions. [2022-01-10 04:21:42,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:21:42,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 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 341 [2022-01-10 04:21:42,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:21:42,916 INFO L225 Difference]: With dead ends: 59257 [2022-01-10 04:21:42,916 INFO L226 Difference]: Without dead ends: 25485 [2022-01-10 04:21:42,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 339 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 04:21:42,935 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 205 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 04:21:42,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 251 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 04:21:42,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25485 states. [2022-01-10 04:21:43,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25485 to 25071. [2022-01-10 04:21:43,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25071 states, 25070 states have (on average 1.0655763861188672) internal successors, (26714), 25070 states have internal predecessors, (26714), 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 04:21:43,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25071 states to 25071 states and 26714 transitions. [2022-01-10 04:21:43,301 INFO L78 Accepts]: Start accepts. Automaton has 25071 states and 26714 transitions. Word has length 341 [2022-01-10 04:21:43,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:21:43,302 INFO L470 AbstractCegarLoop]: Abstraction has 25071 states and 26714 transitions. [2022-01-10 04:21:43,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 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 04:21:43,302 INFO L276 IsEmpty]: Start isEmpty. Operand 25071 states and 26714 transitions. [2022-01-10 04:21:43,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2022-01-10 04:21:43,313 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:21:43,313 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:21:43,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 04:21:43,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:21:43,515 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:21:43,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:21:43,515 INFO L85 PathProgramCache]: Analyzing trace with hash 2067188207, now seen corresponding path program 1 times [2022-01-10 04:21:43,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:21:43,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250532620] [2022-01-10 04:21:43,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:21:43,517 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:21:43,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:21:43,518 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:21:43,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 04:21:43,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:21:43,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-10 04:21:43,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:21:46,258 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 195 proven. 16 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-01-10 04:21:46,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:21:49,038 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 188 proven. 23 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-01-10 04:21:49,038 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:21:49,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250532620] [2022-01-10 04:21:49,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250532620] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:21:49,038 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:21:49,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 04:21:49,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648392076] [2022-01-10 04:21:49,038 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:21:49,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 04:21:49,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:21:49,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 04:21:49,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 04:21:49,039 INFO L87 Difference]: Start difference. First operand 25071 states and 26714 transitions. Second operand has 7 states, 7 states have (on average 56.57142857142857) internal successors, (396), 6 states have internal predecessors, (396), 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 04:21:51,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:21:51,568 INFO L93 Difference]: Finished difference Result 66510 states and 70769 transitions. [2022-01-10 04:21:51,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 04:21:51,569 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 56.57142857142857) internal successors, (396), 6 states have internal predecessors, (396), 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 360 [2022-01-10 04:21:51,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:21:51,610 INFO L225 Difference]: With dead ends: 66510 [2022-01-10 04:21:51,611 INFO L226 Difference]: Without dead ends: 41683 [2022-01-10 04:21:51,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 723 GetRequests, 713 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-01-10 04:21:51,625 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 1421 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 1831 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 2023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 1831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:21:51,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1421 Valid, 301 Invalid, 2023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 1831 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 04:21:51,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41683 states. [2022-01-10 04:21:51,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41683 to 31990. [2022-01-10 04:21:51,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31990 states, 31989 states have (on average 1.068461033480259) internal successors, (34179), 31989 states have internal predecessors, (34179), 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 04:21:51,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31990 states to 31990 states and 34179 transitions. [2022-01-10 04:21:51,975 INFO L78 Accepts]: Start accepts. Automaton has 31990 states and 34179 transitions. Word has length 360 [2022-01-10 04:21:51,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:21:51,976 INFO L470 AbstractCegarLoop]: Abstraction has 31990 states and 34179 transitions. [2022-01-10 04:21:51,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 56.57142857142857) internal successors, (396), 6 states have internal predecessors, (396), 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 04:21:51,976 INFO L276 IsEmpty]: Start isEmpty. Operand 31990 states and 34179 transitions. [2022-01-10 04:21:52,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2022-01-10 04:21:52,065 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:21:52,065 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:52,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 04:21:52,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:21:52,266 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:21:52,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:21:52,266 INFO L85 PathProgramCache]: Analyzing trace with hash -381540971, now seen corresponding path program 1 times [2022-01-10 04:21:52,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:21:52,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240261049] [2022-01-10 04:21:52,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:21:52,269 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:21:52,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:21:52,270 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:21:52,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 04:21:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:21:52,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:21:52,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:21:52,895 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-01-10 04:21:52,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:21:52,895 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:21:52,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240261049] [2022-01-10 04:21:52,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1240261049] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:21:52,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:21:52,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:21:52,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269902545] [2022-01-10 04:21:52,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:21:52,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:21:52,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:21:52,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:21:52,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:21:52,897 INFO L87 Difference]: Start difference. First operand 31990 states and 34179 transitions. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 3 states have internal predecessors, (323), 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 04:21:53,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:21:53,972 INFO L93 Difference]: Finished difference Result 87730 states and 93669 transitions. [2022-01-10 04:21:53,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:21:53,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 3 states have internal predecessors, (323), 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 361 [2022-01-10 04:21:53,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:21:54,134 INFO L225 Difference]: With dead ends: 87730 [2022-01-10 04:21:54,135 INFO L226 Difference]: Without dead ends: 55781 [2022-01-10 04:21:54,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:21:54,148 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 334 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 04:21:54,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 331 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 04:21:54,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55781 states. [2022-01-10 04:21:54,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55781 to 50697. [2022-01-10 04:21:54,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50697 states, 50696 states have (on average 1.069571563831466) internal successors, (54223), 50696 states have internal predecessors, (54223), 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 04:21:54,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50697 states to 50697 states and 54223 transitions. [2022-01-10 04:21:54,761 INFO L78 Accepts]: Start accepts. Automaton has 50697 states and 54223 transitions. Word has length 361 [2022-01-10 04:21:54,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:21:54,761 INFO L470 AbstractCegarLoop]: Abstraction has 50697 states and 54223 transitions. [2022-01-10 04:21:54,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 3 states have internal predecessors, (323), 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 04:21:54,761 INFO L276 IsEmpty]: Start isEmpty. Operand 50697 states and 54223 transitions. [2022-01-10 04:21:54,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-01-10 04:21:54,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:21:54,776 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:21:54,785 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-01-10 04:21:54,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:21:54,983 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:21:54,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:21:54,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1686811372, now seen corresponding path program 1 times [2022-01-10 04:21:54,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:21:54,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630810311] [2022-01-10 04:21:54,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:21:54,986 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:21:54,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:21:54,987 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:21:54,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 04:21:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:21:55,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 04:21:55,126 INFO L286 TraceCheckSpWp]: Computing forward predicates...