/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_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 04:21:57,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 04:21:57,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 04:21:57,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 04:21:57,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 04:21:57,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 04:21:57,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 04:21:57,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 04:21:57,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 04:21:57,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 04:21:57,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 04:21:57,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 04:21:57,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 04:21:57,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 04:21:57,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 04:21:57,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 04:21:57,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 04:21:57,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 04:21:57,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 04:21:57,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 04:21:57,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 04:21:57,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 04:21:57,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 04:21:57,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 04:21:57,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 04:21:57,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 04:21:57,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 04:21:57,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 04:21:57,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 04:21:57,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 04:21:57,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 04:21:57,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 04:21:57,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 04:21:57,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 04:21:57,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 04:21:57,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 04:21:57,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 04:21:57,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 04:21:57,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 04:21:57,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 04:21:57,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 04:21:57,961 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 04:21:57,986 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 04:21:57,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 04:21:57,987 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 04:21:57,987 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 04:21:57,988 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 04:21:57,988 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 04:21:57,988 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 04:21:57,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 04:21:57,988 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 04:21:57,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 04:21:57,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 04:21:57,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 04:21:57,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 04:21:57,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 04:21:57,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 04:21:57,989 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 04:21:57,989 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 04:21:57,989 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 04:21:57,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 04:21:57,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 04:21:57,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 04:21:57,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 04:21:57,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 04:21:57,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:21:57,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 04:21:57,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 04:21:57,990 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 04:21:57,990 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 04:21:57,990 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 04:21:57,991 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 04:21:57,991 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 04:21:57,991 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 04:21:57,991 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 04:21:57,991 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 04:21:58,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 04:21:58,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 04:21:58,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 04:21:58,211 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 04:21:58,212 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 04:21:58,212 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label36.c [2022-01-10 04:21:58,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ffd4a731/ad7f9cbbcfd94391b1d6bd094b07c0db/FLAG6470d1359 [2022-01-10 04:21:58,774 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 04:21:58,774 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label36.c [2022-01-10 04:21:58,791 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ffd4a731/ad7f9cbbcfd94391b1d6bd094b07c0db/FLAG6470d1359 [2022-01-10 04:21:59,242 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ffd4a731/ad7f9cbbcfd94391b1d6bd094b07c0db [2022-01-10 04:21:59,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 04:21:59,255 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 04:21:59,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 04:21:59,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 04:21:59,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 04:21:59,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:21:59" (1/1) ... [2022-01-10 04:21:59,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f167037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:59, skipping insertion in model container [2022-01-10 04:21:59,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:21:59" (1/1) ... [2022-01-10 04:21:59,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 04:21:59,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:21:59,690 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_label36.c[58393,58406] [2022-01-10 04:21:59,712 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:21:59,720 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 04:21:59,849 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_label36.c[58393,58406] [2022-01-10 04:21:59,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:21:59,868 INFO L208 MainTranslator]: Completed translation [2022-01-10 04:21:59,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:59 WrapperNode [2022-01-10 04:21:59,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 04:21:59,869 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 04:21:59,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 04:21:59,869 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 04:21:59,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:59" (1/1) ... [2022-01-10 04:21:59,899 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:59" (1/1) ... [2022-01-10 04:21:59,957 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1769 [2022-01-10 04:21:59,958 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 04:21:59,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 04:21:59,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 04:21:59,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 04:21:59,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:59" (1/1) ... [2022-01-10 04:21:59,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:59" (1/1) ... [2022-01-10 04:21:59,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:59" (1/1) ... [2022-01-10 04:21:59,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:59" (1/1) ... [2022-01-10 04:22:00,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:59" (1/1) ... [2022-01-10 04:22:00,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:59" (1/1) ... [2022-01-10 04:22:00,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:59" (1/1) ... [2022-01-10 04:22:00,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 04:22:00,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 04:22:00,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 04:22:00,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 04:22:00,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:59" (1/1) ... [2022-01-10 04:22:00,047 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:22:00,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 04:22:00,071 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 04:22:00,077 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 04:22:00,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 04:22:00,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 04:22:00,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 04:22:00,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 04:22:00,198 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 04:22:00,199 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 04:22:01,665 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 04:22:01,730 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 04:22:01,730 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 04:22:01,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:22:01 BoogieIcfgContainer [2022-01-10 04:22:01,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 04:22:01,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 04:22:01,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 04:22:01,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 04:22:01,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:21:59" (1/3) ... [2022-01-10 04:22:01,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414d803d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:22:01, skipping insertion in model container [2022-01-10 04:22:01,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:59" (2/3) ... [2022-01-10 04:22:01,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414d803d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:22:01, skipping insertion in model container [2022-01-10 04:22:01,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:22:01" (3/3) ... [2022-01-10 04:22:01,740 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label36.c [2022-01-10 04:22:01,744 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 04:22:01,744 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 04:22:01,786 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 04:22:01,791 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 04:22:01,791 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 04:22:01,813 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 04:22:01,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 04:22:01,826 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:22:01,826 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:22:01,827 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:22:01,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:22:01,831 INFO L85 PathProgramCache]: Analyzing trace with hash -946453597, now seen corresponding path program 1 times [2022-01-10 04:22:01,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:22:01,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235504705] [2022-01-10 04:22:01,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:22:01,843 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:22:01,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:22:01,859 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 04:22:01,860 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 04:22:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:22:01,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-10 04:22:01,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:22:13,315 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 04:22:13,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:22:13,315 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:22:13,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235504705] [2022-01-10 04:22:13,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235504705] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:22:13,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:22:13,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 04:22:13,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838549002] [2022-01-10 04:22:13,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:22:13,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 04:22:13,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:22:13,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 04:22:13,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-10 04:22:13,346 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 19.88888888888889) internal successors, (179), 8 states have internal predecessors, (179), 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 04:22:16,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:22:16,572 INFO L93 Difference]: Finished difference Result 718 states and 1265 transitions. [2022-01-10 04:22:16,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 04:22:16,574 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.88888888888889) internal successors, (179), 8 states have internal predecessors, (179), 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 179 [2022-01-10 04:22:16,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:22:16,582 INFO L225 Difference]: With dead ends: 718 [2022-01-10 04:22:16,582 INFO L226 Difference]: Without dead ends: 352 [2022-01-10 04:22:16,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-01-10 04:22:16,587 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 04:22:16,588 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 04:22:16,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-01-10 04:22:16,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2022-01-10 04:22:16,622 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 04:22:16,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 512 transitions. [2022-01-10 04:22:16,624 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 512 transitions. Word has length 179 [2022-01-10 04:22:16,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:22:16,625 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 512 transitions. [2022-01-10 04:22:16,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.88888888888889) internal successors, (179), 8 states have internal predecessors, (179), 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 04:22:16,625 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 512 transitions. [2022-01-10 04:22:16,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-01-10 04:22:16,628 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:22:16,628 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:22:16,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 04:22:16,839 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 04:22:16,839 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:22:16,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:22:16,840 INFO L85 PathProgramCache]: Analyzing trace with hash 534268696, now seen corresponding path program 1 times [2022-01-10 04:22:16,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:22:16,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [10044641] [2022-01-10 04:22:16,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:22:16,842 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:22:16,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:22:16,846 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 04:22:16,849 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 04:22:16,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:22:16,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-10 04:22:16,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:22:28,230 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 04:22:28,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:22:28,233 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:22:28,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [10044641] [2022-01-10 04:22:28,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [10044641] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:22:28,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:22:28,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 04:22:28,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363344156] [2022-01-10 04:22:28,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:22:28,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 04:22:28,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:22:28,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 04:22:28,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-01-10 04:22:28,251 INFO L87 Difference]: Start difference. First operand 352 states and 512 transitions. Second operand has 10 states, 10 states have (on average 18.6) internal successors, (186), 9 states have internal predecessors, (186), 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 04:22:31,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:22:31,166 INFO L93 Difference]: Finished difference Result 730 states and 1182 transitions. [2022-01-10 04:22:31,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 04:22:31,166 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.6) internal successors, (186), 9 states have internal predecessors, (186), 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 04:22:31,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:22:31,171 INFO L225 Difference]: With dead ends: 730 [2022-01-10 04:22:31,171 INFO L226 Difference]: Without dead ends: 493 [2022-01-10 04:22:31,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 177 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 04:22:31,172 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 487 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 2803 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 2937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 2803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-10 04:22:31,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 375 Invalid, 2937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 2803 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-10 04:22:31,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-01-10 04:22:31,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 493. [2022-01-10 04:22:31,184 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 04:22:31,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 659 transitions. [2022-01-10 04:22:31,185 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 659 transitions. Word has length 186 [2022-01-10 04:22:31,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:22:31,186 INFO L470 AbstractCegarLoop]: Abstraction has 493 states and 659 transitions. [2022-01-10 04:22:31,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.6) internal successors, (186), 9 states have internal predecessors, (186), 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 04:22:31,186 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 659 transitions. [2022-01-10 04:22:31,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-01-10 04:22:31,188 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:22:31,188 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:22:31,197 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 04:22:31,394 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 04:22:31,394 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:22:31,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:22:31,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1503064601, now seen corresponding path program 1 times [2022-01-10 04:22:31,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:22:31,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1078834179] [2022-01-10 04:22:31,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:22:31,397 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:22:31,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:22:31,407 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 04:22:31,408 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 04:22:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:22:31,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 04:22:31,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:22:33,441 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 04:22:33,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:22:33,442 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:22:33,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1078834179] [2022-01-10 04:22:33,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1078834179] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:22:33,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:22:33,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 04:22:33,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586400593] [2022-01-10 04:22:33,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:22:33,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 04:22:33,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:22:33,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 04:22:33,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:22:33,443 INFO L87 Difference]: Start difference. First operand 493 states and 659 transitions. Second operand has 5 states, 5 states have (on average 37.8) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:34,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:22:34,953 INFO L93 Difference]: Finished difference Result 1323 states and 2063 transitions. [2022-01-10 04:22:34,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 04:22:34,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.8) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2022-01-10 04:22:34,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:22:34,958 INFO L225 Difference]: With dead ends: 1323 [2022-01-10 04:22:34,958 INFO L226 Difference]: Without dead ends: 976 [2022-01-10 04:22:34,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 04:22:34,960 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 952 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1574 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 1574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 04:22:34,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [952 Valid, 139 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 1574 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 04:22:34,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2022-01-10 04:22:34,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 974. [2022-01-10 04:22:34,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 973 states have (on average 1.2723535457348407) internal successors, (1238), 973 states have internal predecessors, (1238), 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 04:22:34,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1238 transitions. [2022-01-10 04:22:34,991 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1238 transitions. Word has length 194 [2022-01-10 04:22:34,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:22:34,992 INFO L470 AbstractCegarLoop]: Abstraction has 974 states and 1238 transitions. [2022-01-10 04:22:34,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.8) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:34,992 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1238 transitions. [2022-01-10 04:22:35,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-01-10 04:22:35,004 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:22:35,005 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:22:35,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 04:22:35,212 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 04:22:35,212 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:22:35,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:22:35,214 INFO L85 PathProgramCache]: Analyzing trace with hash 315085437, now seen corresponding path program 1 times [2022-01-10 04:22:35,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:22:35,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2041152939] [2022-01-10 04:22:35,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:22:35,215 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:22:35,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:22:35,216 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 04:22:35,218 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 04:22:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:22:35,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:22:35,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:22:35,485 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:22:35,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:22:35,485 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:22:35,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2041152939] [2022-01-10 04:22:35,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2041152939] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:22:35,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:22:35,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:22:35,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836977063] [2022-01-10 04:22:35,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:22:35,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:22:35,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:22:35,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:22:35,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:22:35,489 INFO L87 Difference]: Start difference. First operand 974 states and 1238 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 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 04:22:36,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:22:36,413 INFO L93 Difference]: Finished difference Result 2101 states and 2844 transitions. [2022-01-10 04:22:36,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:22:36,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 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 207 [2022-01-10 04:22:36,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:22:36,417 INFO L225 Difference]: With dead ends: 2101 [2022-01-10 04:22:36,417 INFO L226 Difference]: Without dead ends: 1383 [2022-01-10 04:22:36,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 205 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 04:22:36,420 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 189 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 04:22:36,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 279 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 04:22:36,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2022-01-10 04:22:36,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1380. [2022-01-10 04:22:36,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1379 states have (on average 1.237128353879623) internal successors, (1706), 1379 states have internal predecessors, (1706), 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 04:22:36,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 1706 transitions. [2022-01-10 04:22:36,439 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 1706 transitions. Word has length 207 [2022-01-10 04:22:36,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:22:36,439 INFO L470 AbstractCegarLoop]: Abstraction has 1380 states and 1706 transitions. [2022-01-10 04:22:36,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 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 04:22:36,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 1706 transitions. [2022-01-10 04:22:36,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-01-10 04:22:36,441 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:22:36,442 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 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 04:22:36,461 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 04:22:36,648 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 04:22:36,650 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:22:36,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:22:36,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1042422668, now seen corresponding path program 1 times [2022-01-10 04:22:36,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:22:36,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384553944] [2022-01-10 04:22:36,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:22:36,653 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:22:36,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:22:36,654 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 04:22:36,711 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 04:22:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:22:36,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 04:22:36,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:22:38,119 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:22:38,119 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:22:38,119 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:22:38,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384553944] [2022-01-10 04:22:38,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1384553944] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:22:38,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:22:38,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 04:22:38,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696688466] [2022-01-10 04:22:38,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:22:38,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 04:22:38,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:22:38,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 04:22:38,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:22:38,121 INFO L87 Difference]: Start difference. First operand 1380 states and 1706 transitions. Second operand has 5 states, 5 states have (on average 42.0) internal successors, (210), 4 states have internal predecessors, (210), 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 04:22:40,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:22:40,073 INFO L93 Difference]: Finished difference Result 6256 states and 8259 transitions. [2022-01-10 04:22:40,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 04:22:40,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 4 states have internal predecessors, (210), 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 210 [2022-01-10 04:22:40,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:22:40,093 INFO L225 Difference]: With dead ends: 6256 [2022-01-10 04:22:40,093 INFO L226 Difference]: Without dead ends: 5132 [2022-01-10 04:22:40,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 04:22:40,096 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 1073 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1769 mSolverCounterSat, 488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 2257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 488 IncrementalHoareTripleChecker+Valid, 1769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 04:22:40,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1073 Valid, 262 Invalid, 2257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [488 Valid, 1769 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 04:22:40,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5132 states. [2022-01-10 04:22:40,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5132 to 3733. [2022-01-10 04:22:40,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3733 states, 3732 states have (on average 1.2443729903536977) internal successors, (4644), 3732 states have internal predecessors, (4644), 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 04:22:40,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3733 states to 3733 states and 4644 transitions. [2022-01-10 04:22:40,151 INFO L78 Accepts]: Start accepts. Automaton has 3733 states and 4644 transitions. Word has length 210 [2022-01-10 04:22:40,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:22:40,151 INFO L470 AbstractCegarLoop]: Abstraction has 3733 states and 4644 transitions. [2022-01-10 04:22:40,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 4 states have internal predecessors, (210), 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 04:22:40,152 INFO L276 IsEmpty]: Start isEmpty. Operand 3733 states and 4644 transitions. [2022-01-10 04:22:40,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-01-10 04:22:40,156 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:22:40,157 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:22:40,183 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 04:22:40,386 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 04:22:40,387 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:22:40,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:22:40,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1639047933, now seen corresponding path program 1 times [2022-01-10 04:22:40,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:22:40,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606699732] [2022-01-10 04:22:40,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:22:40,389 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:22:40,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:22:40,390 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 04:22:40,391 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 04:22:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:22:40,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:22:40,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:22:40,986 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 04:22:40,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:22:40,986 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:22:40,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606699732] [2022-01-10 04:22:40,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [606699732] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:22:40,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:22:40,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:22:40,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982073014] [2022-01-10 04:22:40,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:22:40,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:22:40,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:22:40,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:22:40,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:22:40,987 INFO L87 Difference]: Start difference. First operand 3733 states and 4644 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 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 04:22:41,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:22:41,883 INFO L93 Difference]: Finished difference Result 9664 states and 12303 transitions. [2022-01-10 04:22:41,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:22:41,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 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 251 [2022-01-10 04:22:41,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:22:41,898 INFO L225 Difference]: With dead ends: 9664 [2022-01-10 04:22:41,898 INFO L226 Difference]: Without dead ends: 5709 [2022-01-10 04:22:41,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 249 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 04:22:41,905 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 203 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 04:22:41,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 139 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 04:22:41,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5709 states. [2022-01-10 04:22:41,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5709 to 5708. [2022-01-10 04:22:41,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5708 states, 5707 states have (on average 1.2048361661117926) internal successors, (6876), 5707 states have internal predecessors, (6876), 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 04:22:41,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5708 states to 5708 states and 6876 transitions. [2022-01-10 04:22:41,973 INFO L78 Accepts]: Start accepts. Automaton has 5708 states and 6876 transitions. Word has length 251 [2022-01-10 04:22:41,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:22:41,973 INFO L470 AbstractCegarLoop]: Abstraction has 5708 states and 6876 transitions. [2022-01-10 04:22:41,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 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 04:22:41,974 INFO L276 IsEmpty]: Start isEmpty. Operand 5708 states and 6876 transitions. [2022-01-10 04:22:41,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-01-10 04:22:41,979 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:22:41,980 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 04:22:41,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-01-10 04:22:42,186 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 04:22:42,187 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:22:42,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:22:42,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1057336978, now seen corresponding path program 1 times [2022-01-10 04:22:42,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:22:42,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981220692] [2022-01-10 04:22:42,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:22:42,189 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:22:42,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:22:42,216 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 04:22:42,218 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 04:22:42,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:22:42,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-10 04:22:42,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:23:03,257 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 39 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:23:03,257 INFO L328 TraceCheckSpWp]: Computing backward predicates...