/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_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 04:22:40,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 04:22:40,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 04:22:40,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 04:22:40,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 04:22:40,899 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 04:22:40,900 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 04:22:40,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 04:22:40,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 04:22:40,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 04:22:40,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 04:22:40,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 04:22:40,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 04:22:40,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 04:22:40,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 04:22:40,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 04:22:40,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 04:22:40,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 04:22:40,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 04:22:40,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 04:22:40,921 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 04:22:40,937 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 04:22:40,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 04:22:40,938 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 04:22:40,938 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 04:22:40,938 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 04:22:40,938 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 04:22:40,939 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 04:22:40,939 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 04:22:40,939 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 04:22:40,939 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 04:22:40,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 04:22:40,940 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 04:22:40,940 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 04:22:40,940 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 04:22:40,940 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 04:22:40,940 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 04:22:40,940 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 04:22:40,940 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 04:22:40,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 04:22:40,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 04:22:40,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 04:22:40,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 04:22:40,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 04:22:40,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:22:40,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 04:22:40,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 04:22:40,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 04:22:40,942 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 04:22:40,942 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 04:22:40,942 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 04:22:40,942 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 04:22:40,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 04:22:40,942 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 04:22:40,942 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 04:22:41,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 04:22:41,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 04:22:41,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 04:22:41,154 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 04:22:41,155 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 04:22:41,156 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label43.c [2022-01-10 04:22:41,206 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cec8adaca/c4b089b21628435790e522bf51e54ccb/FLAGccbbb7f88 [2022-01-10 04:22:41,704 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 04:22:41,705 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label43.c [2022-01-10 04:22:41,728 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cec8adaca/c4b089b21628435790e522bf51e54ccb/FLAGccbbb7f88 [2022-01-10 04:22:42,250 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cec8adaca/c4b089b21628435790e522bf51e54ccb [2022-01-10 04:22:42,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 04:22:42,255 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 04:22:42,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 04:22:42,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 04:22:42,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 04:22:42,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:22:42" (1/1) ... [2022-01-10 04:22:42,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@98a01a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:22:42, skipping insertion in model container [2022-01-10 04:22:42,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:22:42" (1/1) ... [2022-01-10 04:22:42,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 04:22:42,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:22:42,788 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_label43.c[54461,54474] [2022-01-10 04:22:42,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:22:42,835 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 04:22:43,026 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_label43.c[54461,54474] [2022-01-10 04:22:43,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:22:43,068 INFO L208 MainTranslator]: Completed translation [2022-01-10 04:22:43,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:22:43 WrapperNode [2022-01-10 04:22:43,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 04:22:43,070 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 04:22:43,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 04:22:43,070 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 04:22:43,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:22:43" (1/1) ... [2022-01-10 04:22:43,117 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:22:43" (1/1) ... [2022-01-10 04:22:43,193 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1769 [2022-01-10 04:22:43,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 04:22:43,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 04:22:43,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 04:22:43,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 04:22:43,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:22:43" (1/1) ... [2022-01-10 04:22:43,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:22:43" (1/1) ... [2022-01-10 04:22:43,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:22:43" (1/1) ... [2022-01-10 04:22:43,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:22:43" (1/1) ... [2022-01-10 04:22:43,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:22:43" (1/1) ... [2022-01-10 04:22:43,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:22:43" (1/1) ... [2022-01-10 04:22:43,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:22:43" (1/1) ... [2022-01-10 04:22:43,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 04:22:43,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 04:22:43,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 04:22:43,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 04:22:43,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:22:43" (1/1) ... [2022-01-10 04:22:43,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:22:43,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 04:22:43,335 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 04:22:43,362 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 04:22:43,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 04:22:43,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 04:22:43,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 04:22:43,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 04:22:43,495 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 04:22:43,497 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 04:22:45,201 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 04:22:45,210 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 04:22:45,210 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 04:22:45,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:22:45 BoogieIcfgContainer [2022-01-10 04:22:45,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 04:22:45,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 04:22:45,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 04:22:45,215 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 04:22:45,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:22:42" (1/3) ... [2022-01-10 04:22:45,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332deace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:22:45, skipping insertion in model container [2022-01-10 04:22:45,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:22:43" (2/3) ... [2022-01-10 04:22:45,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332deace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:22:45, skipping insertion in model container [2022-01-10 04:22:45,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:22:45" (3/3) ... [2022-01-10 04:22:45,218 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label43.c [2022-01-10 04:22:45,222 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 04:22:45,222 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 04:22:45,273 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 04:22:45,280 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 04:22:45,280 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 04:22:45,307 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 04:22:45,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-01-10 04:22:45,321 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:22:45,322 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] [2022-01-10 04:22:45,322 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:22:45,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:22:45,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1013798534, now seen corresponding path program 1 times [2022-01-10 04:22:45,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:22:45,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029981576] [2022-01-10 04:22:45,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:22:45,391 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:22:45,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:22:45,393 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 04:22:45,395 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 04:22:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:22:45,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-10 04:22:45,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:23:06,366 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 04:23:06,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:23:06,367 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:23:06,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029981576] [2022-01-10 04:23:06,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029981576] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:23:06,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:23:06,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 04:23:06,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582814236] [2022-01-10 04:23:06,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:23:06,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 04:23:06,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:23:06,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 04:23:06,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-10 04:23:06,404 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 10 states, 10 states have (on average 15.0) internal successors, (150), 9 states have internal predecessors, (150), 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 04:23:11,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:23:11,652 INFO L93 Difference]: Finished difference Result 1141 states and 2093 transitions. [2022-01-10 04:23:11,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 04:23:11,654 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.0) internal successors, (150), 9 states have internal predecessors, (150), 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 150 [2022-01-10 04:23:11,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:23:11,671 INFO L225 Difference]: With dead ends: 1141 [2022-01-10 04:23:11,671 INFO L226 Difference]: Without dead ends: 767 [2022-01-10 04:23:11,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2022-01-10 04:23:11,678 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 1795 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 3192 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1795 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 3710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 3192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-01-10 04:23:11,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1795 Valid, 248 Invalid, 3710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 3192 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-01-10 04:23:11,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2022-01-10 04:23:11,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 766. [2022-01-10 04:23:11,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 765 states have (on average 1.427450980392157) internal successors, (1092), 765 states have internal predecessors, (1092), 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 04:23:11,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1092 transitions. [2022-01-10 04:23:11,766 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1092 transitions. Word has length 150 [2022-01-10 04:23:11,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:23:11,766 INFO L470 AbstractCegarLoop]: Abstraction has 766 states and 1092 transitions. [2022-01-10 04:23:11,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.0) internal successors, (150), 9 states have internal predecessors, (150), 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 04:23:11,767 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1092 transitions. [2022-01-10 04:23:11,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 04:23:11,772 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:23:11,772 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2022-01-10 04:23:11,783 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 04:23:11,973 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 04:23:11,974 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:23:11,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:23:11,974 INFO L85 PathProgramCache]: Analyzing trace with hash 891163429, now seen corresponding path program 1 times [2022-01-10 04:23:11,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:23:11,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [336449957] [2022-01-10 04:23:11,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:23:11,977 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:23:11,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:23:11,978 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 04:23:11,979 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 04:23:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:23:12,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:23:12,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:23:12,333 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 04:23:12,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:23:12,334 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:23:12,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [336449957] [2022-01-10 04:23:12,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [336449957] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:23:12,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:23:12,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:23:12,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158706867] [2022-01-10 04:23:12,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:23:12,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:23:12,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:23:12,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:23:12,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:23:12,337 INFO L87 Difference]: Start difference. First operand 766 states and 1092 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 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 04:23:13,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:23:13,307 INFO L93 Difference]: Finished difference Result 1639 states and 2420 transitions. [2022-01-10 04:23:13,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:23:13,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 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 164 [2022-01-10 04:23:13,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:23:13,312 INFO L225 Difference]: With dead ends: 1639 [2022-01-10 04:23:13,312 INFO L226 Difference]: Without dead ends: 1192 [2022-01-10 04:23:13,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 162 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 04:23:13,315 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 04:23:13,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 89 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 04:23:13,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2022-01-10 04:23:13,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1177. [2022-01-10 04:23:13,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1176 states have (on average 1.3741496598639455) internal successors, (1616), 1176 states have internal predecessors, (1616), 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 04:23:13,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1616 transitions. [2022-01-10 04:23:13,341 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1616 transitions. Word has length 164 [2022-01-10 04:23:13,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:23:13,341 INFO L470 AbstractCegarLoop]: Abstraction has 1177 states and 1616 transitions. [2022-01-10 04:23:13,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 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 04:23:13,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1616 transitions. [2022-01-10 04:23:13,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-01-10 04:23:13,344 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:23:13,344 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2022-01-10 04:23:13,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 04:23:13,553 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 04:23:13,554 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:23:13,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:23:13,554 INFO L85 PathProgramCache]: Analyzing trace with hash 775148768, now seen corresponding path program 1 times [2022-01-10 04:23:13,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:23:13,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [348488869] [2022-01-10 04:23:13,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:23:13,557 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:23:13,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:23:13,558 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 04:23:13,560 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 04:23:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:23:13,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:23:13,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:23:13,982 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 04:23:13,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:23:13,982 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:23:13,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [348488869] [2022-01-10 04:23:13,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [348488869] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:23:13,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:23:13,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:23:13,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641331701] [2022-01-10 04:23:13,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:23:13,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:23:13,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:23:13,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:23:13,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:23:13,988 INFO L87 Difference]: Start difference. First operand 1177 states and 1616 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 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 04:23:15,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:23:15,126 INFO L93 Difference]: Finished difference Result 2441 states and 3645 transitions. [2022-01-10 04:23:15,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:23:15,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 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 166 [2022-01-10 04:23:15,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:23:15,133 INFO L225 Difference]: With dead ends: 2441 [2022-01-10 04:23:15,134 INFO L226 Difference]: Without dead ends: 1786 [2022-01-10 04:23:15,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 164 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 04:23:15,136 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 211 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:23:15,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 214 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 04:23:15,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2022-01-10 04:23:15,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1786. [2022-01-10 04:23:15,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1786 states, 1785 states have (on average 1.2733893557422968) internal successors, (2273), 1785 states have internal predecessors, (2273), 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 04:23:15,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1786 states to 1786 states and 2273 transitions. [2022-01-10 04:23:15,173 INFO L78 Accepts]: Start accepts. Automaton has 1786 states and 2273 transitions. Word has length 166 [2022-01-10 04:23:15,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:23:15,173 INFO L470 AbstractCegarLoop]: Abstraction has 1786 states and 2273 transitions. [2022-01-10 04:23:15,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 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 04:23:15,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1786 states and 2273 transitions. [2022-01-10 04:23:15,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 04:23:15,176 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:23:15,176 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] [2022-01-10 04:23:15,187 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 04:23:15,385 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 04:23:15,385 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:23:15,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:23:15,386 INFO L85 PathProgramCache]: Analyzing trace with hash -881938352, now seen corresponding path program 1 times [2022-01-10 04:23:15,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:23:15,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1669915367] [2022-01-10 04:23:15,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:23:15,387 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:23:15,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:23:15,388 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 04:23:15,389 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 04:23:15,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:23:15,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:23:15,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:23:15,751 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 04:23:15,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:23:15,752 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:23:15,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1669915367] [2022-01-10 04:23:15,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1669915367] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:23:15,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:23:15,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:23:15,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545523437] [2022-01-10 04:23:15,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:23:15,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:23:15,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:23:15,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:23:15,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:23:15,759 INFO L87 Difference]: Start difference. First operand 1786 states and 2273 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 04:23:16,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:23:16,716 INFO L93 Difference]: Finished difference Result 3661 states and 4993 transitions. [2022-01-10 04:23:16,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:23:16,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 04:23:16,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:23:16,724 INFO L225 Difference]: With dead ends: 3661 [2022-01-10 04:23:16,725 INFO L226 Difference]: Without dead ends: 2397 [2022-01-10 04:23:16,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 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 04:23:16,728 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 235 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 04:23:16,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 393 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 04:23:16,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2397 states. [2022-01-10 04:23:16,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2397 to 2192. [2022-01-10 04:23:16,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2192 states, 2191 states have (on average 1.258329529895025) internal successors, (2757), 2191 states have internal predecessors, (2757), 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 04:23:16,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2192 states to 2192 states and 2757 transitions. [2022-01-10 04:23:16,780 INFO L78 Accepts]: Start accepts. Automaton has 2192 states and 2757 transitions. Word has length 171 [2022-01-10 04:23:16,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:23:16,781 INFO L470 AbstractCegarLoop]: Abstraction has 2192 states and 2757 transitions. [2022-01-10 04:23:16,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 04:23:16,781 INFO L276 IsEmpty]: Start isEmpty. Operand 2192 states and 2757 transitions. [2022-01-10 04:23:16,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-01-10 04:23:16,785 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:23:16,785 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 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 04:23:16,796 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 04:23:16,994 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 04:23:16,996 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:23:16,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:23:16,997 INFO L85 PathProgramCache]: Analyzing trace with hash -316543118, now seen corresponding path program 1 times [2022-01-10 04:23:16,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:23:16,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1510920934] [2022-01-10 04:23:16,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:23:16,999 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:23:17,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:23:17,001 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 04:23:17,003 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 04:23:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:23:17,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:23:17,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:23:17,386 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-10 04:23:17,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:23:17,387 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:23:17,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1510920934] [2022-01-10 04:23:17,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1510920934] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:23:17,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:23:17,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:23:17,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247631569] [2022-01-10 04:23:17,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:23:17,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:23:17,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:23:17,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:23:17,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:23:17,389 INFO L87 Difference]: Start difference. First operand 2192 states and 2757 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 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 04:23:17,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:23:17,857 INFO L93 Difference]: Finished difference Result 3839 states and 4942 transitions. [2022-01-10 04:23:17,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:23:17,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 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 191 [2022-01-10 04:23:17,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:23:17,863 INFO L225 Difference]: With dead ends: 3839 [2022-01-10 04:23:17,863 INFO L226 Difference]: Without dead ends: 2169 [2022-01-10 04:23:17,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 189 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 04:23:17,866 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 321 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 04:23:17,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 31 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 04:23:17,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2169 states. [2022-01-10 04:23:17,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2169 to 2169. [2022-01-10 04:23:17,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2169 states, 2168 states have (on average 1.220018450184502) internal successors, (2645), 2168 states have internal predecessors, (2645), 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 04:23:17,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 2645 transitions. [2022-01-10 04:23:17,900 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 2645 transitions. Word has length 191 [2022-01-10 04:23:17,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:23:17,901 INFO L470 AbstractCegarLoop]: Abstraction has 2169 states and 2645 transitions. [2022-01-10 04:23:17,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 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 04:23:17,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 2645 transitions. [2022-01-10 04:23:17,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-01-10 04:23:17,904 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:23:17,905 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:23:17,915 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 04:23:18,113 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 04:23:18,114 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:23:18,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:23:18,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1764368620, now seen corresponding path program 1 times [2022-01-10 04:23:18,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:23:18,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087763529] [2022-01-10 04:23:18,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:23:18,116 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:23:18,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:23:18,117 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 04:23:18,118 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 04:23:18,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:23:18,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:23:18,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:23:18,611 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-10 04:23:18,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:23:18,611 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:23:18,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2087763529] [2022-01-10 04:23:18,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2087763529] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:23:18,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:23:18,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:23:18,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363066502] [2022-01-10 04:23:18,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:23:18,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:23:18,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:23:18,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:23:18,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:23:18,621 INFO L87 Difference]: Start difference. First operand 2169 states and 2645 transitions. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 3 states have internal predecessors, (202), 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 04:23:19,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:23:19,757 INFO L93 Difference]: Finished difference Result 5244 states and 6612 transitions. [2022-01-10 04:23:19,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:23:19,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 3 states have internal predecessors, (202), 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 218 [2022-01-10 04:23:19,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:23:19,768 INFO L225 Difference]: With dead ends: 5244 [2022-01-10 04:23:19,769 INFO L226 Difference]: Without dead ends: 3597 [2022-01-10 04:23:19,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 215 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 04:23:19,772 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 531 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:23:19,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 56 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 04:23:19,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3597 states. [2022-01-10 04:23:19,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3597 to 3593. [2022-01-10 04:23:19,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3593 states, 3592 states have (on average 1.2271714922048997) internal successors, (4408), 3592 states have internal predecessors, (4408), 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 04:23:19,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3593 states to 3593 states and 4408 transitions. [2022-01-10 04:23:19,834 INFO L78 Accepts]: Start accepts. Automaton has 3593 states and 4408 transitions. Word has length 218 [2022-01-10 04:23:19,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:23:19,836 INFO L470 AbstractCegarLoop]: Abstraction has 3593 states and 4408 transitions. [2022-01-10 04:23:19,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 3 states have internal predecessors, (202), 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 04:23:19,836 INFO L276 IsEmpty]: Start isEmpty. Operand 3593 states and 4408 transitions. [2022-01-10 04:23:19,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-01-10 04:23:19,842 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:23:19,842 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 04:23:19,854 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 04:23:20,051 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 04:23:20,052 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:23:20,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:23:20,052 INFO L85 PathProgramCache]: Analyzing trace with hash -970025317, now seen corresponding path program 1 times [2022-01-10 04:23:20,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:23:20,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614475176] [2022-01-10 04:23:20,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:23:20,054 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:23:20,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:23:20,055 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 04:23:20,055 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 04:23:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:23:20,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 04:23:20,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:23:20,827 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 04:23:20,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:23:20,828 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:23:20,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614475176] [2022-01-10 04:23:20,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [614475176] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:23:20,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:23:20,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:23:20,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133001914] [2022-01-10 04:23:20,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:23:20,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:23:20,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:23:20,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:23:20,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:23:20,830 INFO L87 Difference]: Start difference. First operand 3593 states and 4408 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 states have internal predecessors, (225), 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 04:23:21,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:23:21,632 INFO L93 Difference]: Finished difference Result 7682 states and 9402 transitions. [2022-01-10 04:23:21,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:23:21,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 states have internal predecessors, (225), 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 236 [2022-01-10 04:23:21,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:23:21,643 INFO L225 Difference]: With dead ends: 7682 [2022-01-10 04:23:21,644 INFO L226 Difference]: Without dead ends: 4611 [2022-01-10 04:23:21,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 234 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 04:23:21,648 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 138 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 04:23:21,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 162 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 04:23:21,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4611 states. [2022-01-10 04:23:21,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4611 to 4608. [2022-01-10 04:23:21,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4608 states, 4607 states have (on average 1.19795962665509) internal successors, (5519), 4607 states have internal predecessors, (5519), 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 04:23:21,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4608 states to 4608 states and 5519 transitions. [2022-01-10 04:23:21,721 INFO L78 Accepts]: Start accepts. Automaton has 4608 states and 5519 transitions. Word has length 236 [2022-01-10 04:23:21,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:23:21,722 INFO L470 AbstractCegarLoop]: Abstraction has 4608 states and 5519 transitions. [2022-01-10 04:23:21,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 states have internal predecessors, (225), 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 04:23:21,723 INFO L276 IsEmpty]: Start isEmpty. Operand 4608 states and 5519 transitions. [2022-01-10 04:23:21,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-01-10 04:23:21,736 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:23:21,736 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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, 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] [2022-01-10 04:23:21,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 04:23:21,945 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 04:23:21,946 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:23:21,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:23:21,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1633497475, now seen corresponding path program 1 times [2022-01-10 04:23:21,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:23:21,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [968867459] [2022-01-10 04:23:21,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:23:21,948 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:23:21,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:23:21,950 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 04:23:21,951 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 04:23:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:23:22,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:23:22,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:23:22,433 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-01-10 04:23:22,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:23:22,433 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:23:22,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [968867459] [2022-01-10 04:23:22,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [968867459] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:23:22,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:23:22,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:23:22,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532901330] [2022-01-10 04:23:22,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:23:22,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:23:22,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:23:22,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:23:22,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:23:22,435 INFO L87 Difference]: Start difference. First operand 4608 states and 5519 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 04:23:23,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:23:23,360 INFO L93 Difference]: Finished difference Result 11339 states and 13884 transitions. [2022-01-10 04:23:23,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:23:23,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 252 [2022-01-10 04:23:23,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:23:23,377 INFO L225 Difference]: With dead ends: 11339 [2022-01-10 04:23:23,377 INFO L226 Difference]: Without dead ends: 7253 [2022-01-10 04:23:23,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 250 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 04:23:23,383 INFO L933 BasicCegarLoop]: 294 mSDtfsCounter, 214 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 04:23:23,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 315 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 04:23:23,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7253 states. [2022-01-10 04:23:23,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7253 to 6844. [2022-01-10 04:23:23,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6844 states, 6843 states have (on average 1.1912903697208828) internal successors, (8152), 6843 states have internal predecessors, (8152), 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 04:23:23,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6844 states to 6844 states and 8152 transitions. [2022-01-10 04:23:23,496 INFO L78 Accepts]: Start accepts. Automaton has 6844 states and 8152 transitions. Word has length 252 [2022-01-10 04:23:23,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:23:23,497 INFO L470 AbstractCegarLoop]: Abstraction has 6844 states and 8152 transitions. [2022-01-10 04:23:23,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 04:23:23,497 INFO L276 IsEmpty]: Start isEmpty. Operand 6844 states and 8152 transitions. [2022-01-10 04:23:23,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-01-10 04:23:23,506 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:23:23,506 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] [2022-01-10 04:23:23,519 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 04:23:23,715 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 04:23:23,716 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:23:23,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:23:23,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1182487397, now seen corresponding path program 1 times [2022-01-10 04:23:23,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:23:23,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111947612] [2022-01-10 04:23:23,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:23:23,718 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:23:23,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:23:23,719 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 04:23:23,720 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 04:23:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:23:23,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:23:23,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:23:24,467 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 04:23:24,467 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:23:24,467 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:23:24,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111947612] [2022-01-10 04:23:24,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1111947612] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:23:24,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:23:24,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:23:24,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098038568] [2022-01-10 04:23:24,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:23:24,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:23:24,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:23:24,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:23:24,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:23:24,469 INFO L87 Difference]: Start difference. First operand 6844 states and 8152 transitions. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 2 states have internal predecessors, (250), 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 04:23:25,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:23:25,334 INFO L93 Difference]: Finished difference Result 13576 states and 16456 transitions. [2022-01-10 04:23:25,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:23:25,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 2 states have internal predecessors, (250), 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 252 [2022-01-10 04:23:25,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:23:25,356 INFO L225 Difference]: With dead ends: 13576 [2022-01-10 04:23:25,357 INFO L226 Difference]: Without dead ends: 8269 [2022-01-10 04:23:25,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 250 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 04:23:25,364 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 119 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 04:23:25,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 130 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 04:23:25,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8269 states. [2022-01-10 04:23:25,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8269 to 8265. [2022-01-10 04:23:25,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8265 states, 8264 states have (on average 1.1859874152952565) internal successors, (9801), 8264 states have internal predecessors, (9801), 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 04:23:25,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8265 states to 8265 states and 9801 transitions. [2022-01-10 04:23:25,504 INFO L78 Accepts]: Start accepts. Automaton has 8265 states and 9801 transitions. Word has length 252 [2022-01-10 04:23:25,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:23:25,505 INFO L470 AbstractCegarLoop]: Abstraction has 8265 states and 9801 transitions. [2022-01-10 04:23:25,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 2 states have internal predecessors, (250), 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 04:23:25,505 INFO L276 IsEmpty]: Start isEmpty. Operand 8265 states and 9801 transitions. [2022-01-10 04:23:25,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-01-10 04:23:25,515 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:23:25,516 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2022-01-10 04:23:25,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 04:23:25,728 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 04:23:25,728 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:23:25,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:23:25,729 INFO L85 PathProgramCache]: Analyzing trace with hash 813409835, now seen corresponding path program 1 times [2022-01-10 04:23:25,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:23:25,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847491418] [2022-01-10 04:23:25,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:23:25,746 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:23:25,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:23:25,747 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 04:23:25,748 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 04:23:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:23:25,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:23:25,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:23:26,165 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 04:23:26,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:23:26,165 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:23:26,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [847491418] [2022-01-10 04:23:26,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [847491418] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:23:26,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:23:26,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:23:26,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158717813] [2022-01-10 04:23:26,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:23:26,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:23:26,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:23:26,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:23:26,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:23:26,167 INFO L87 Difference]: Start difference. First operand 8265 states and 9801 transitions. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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 04:23:26,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:23:26,467 INFO L93 Difference]: Finished difference Result 19892 states and 24065 transitions. [2022-01-10 04:23:26,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:23:26,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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 266 [2022-01-10 04:23:26,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:23:26,496 INFO L225 Difference]: With dead ends: 19892 [2022-01-10 04:23:26,496 INFO L226 Difference]: Without dead ends: 13570 [2022-01-10 04:23:26,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 264 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 04:23:26,506 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 324 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 04:23:26,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 548 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 04:23:26,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13570 states. [2022-01-10 04:23:26,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13570 to 13568. [2022-01-10 04:23:26,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13568 states, 13567 states have (on average 1.2021080563131128) internal successors, (16309), 13567 states have internal predecessors, (16309), 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 04:23:26,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13568 states to 13568 states and 16309 transitions. [2022-01-10 04:23:26,708 INFO L78 Accepts]: Start accepts. Automaton has 13568 states and 16309 transitions. Word has length 266 [2022-01-10 04:23:26,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:23:26,708 INFO L470 AbstractCegarLoop]: Abstraction has 13568 states and 16309 transitions. [2022-01-10 04:23:26,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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 04:23:26,708 INFO L276 IsEmpty]: Start isEmpty. Operand 13568 states and 16309 transitions. [2022-01-10 04:23:26,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-01-10 04:23:26,724 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:23:26,725 INFO L514 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 04:23:26,734 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 04:23:26,934 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 04:23:26,935 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:23:26,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:23:26,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1618081878, now seen corresponding path program 1 times [2022-01-10 04:23:26,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:23:26,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1795874999] [2022-01-10 04:23:26,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:23:26,937 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:23:26,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:23:26,938 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 04:23:26,940 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 04:23:27,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:23:27,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:23:27,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:23:27,441 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 04:23:27,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:23:27,441 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:23:27,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1795874999] [2022-01-10 04:23:27,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1795874999] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:23:27,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:23:27,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:23:27,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545607367] [2022-01-10 04:23:27,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:23:27,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:23:27,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:23:27,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:23:27,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:23:27,443 INFO L87 Difference]: Start difference. First operand 13568 states and 16309 transitions. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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 04:23:28,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:23:28,408 INFO L93 Difference]: Finished difference Result 37986 states and 45695 transitions. [2022-01-10 04:23:28,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:23:28,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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 279 [2022-01-10 04:23:28,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:23:28,447 INFO L225 Difference]: With dead ends: 37986 [2022-01-10 04:23:28,447 INFO L226 Difference]: Without dead ends: 24940 [2022-01-10 04:23:28,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 277 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 04:23:28,464 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 219 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 04:23:28,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 331 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 04:23:28,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24940 states. [2022-01-10 04:23:28,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24940 to 24530. [2022-01-10 04:23:28,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24530 states, 24529 states have (on average 1.1568347670104775) internal successors, (28376), 24529 states have internal predecessors, (28376), 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 04:23:28,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24530 states to 24530 states and 28376 transitions. [2022-01-10 04:23:28,828 INFO L78 Accepts]: Start accepts. Automaton has 24530 states and 28376 transitions. Word has length 279 [2022-01-10 04:23:28,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:23:28,829 INFO L470 AbstractCegarLoop]: Abstraction has 24530 states and 28376 transitions. [2022-01-10 04:23:28,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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 04:23:28,829 INFO L276 IsEmpty]: Start isEmpty. Operand 24530 states and 28376 transitions. [2022-01-10 04:23:28,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2022-01-10 04:23:28,857 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:23:28,857 INFO L514 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 04:23:28,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 04:23:29,067 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 04:23:29,068 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:23:29,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:23:29,068 INFO L85 PathProgramCache]: Analyzing trace with hash -2131640261, now seen corresponding path program 1 times [2022-01-10 04:23:29,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:23:29,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [178543952] [2022-01-10 04:23:29,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:23:29,070 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:23:29,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:23:29,071 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 04:23:29,072 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 04:23:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:23:29,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:23:29,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:23:29,716 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-01-10 04:23:29,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:23:29,716 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:23:29,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [178543952] [2022-01-10 04:23:29,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [178543952] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:23:29,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:23:29,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:23:29,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283901638] [2022-01-10 04:23:29,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:23:29,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:23:29,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:23:29,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:23:29,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:23:29,718 INFO L87 Difference]: Start difference. First operand 24530 states and 28376 transitions. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 2 states have internal predecessors, (279), 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 04:23:30,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:23:30,654 INFO L93 Difference]: Finished difference Result 48542 states and 56222 transitions. [2022-01-10 04:23:30,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:23:30,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 2 states have internal predecessors, (279), 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 328 [2022-01-10 04:23:30,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:23:30,687 INFO L225 Difference]: With dead ends: 48542 [2022-01-10 04:23:30,688 INFO L226 Difference]: Without dead ends: 24534 [2022-01-10 04:23:30,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 326 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 04:23:30,706 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 117 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 04:23:30,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 106 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 04:23:30,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24534 states. [2022-01-10 04:23:30,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24534 to 24530. [2022-01-10 04:23:31,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24530 states, 24529 states have (on average 1.1282971176974195) internal successors, (27676), 24529 states have internal predecessors, (27676), 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 04:23:31,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24530 states to 24530 states and 27676 transitions. [2022-01-10 04:23:31,037 INFO L78 Accepts]: Start accepts. Automaton has 24530 states and 27676 transitions. Word has length 328 [2022-01-10 04:23:31,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:23:31,038 INFO L470 AbstractCegarLoop]: Abstraction has 24530 states and 27676 transitions. [2022-01-10 04:23:31,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 2 states have internal predecessors, (279), 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 04:23:31,038 INFO L276 IsEmpty]: Start isEmpty. Operand 24530 states and 27676 transitions. [2022-01-10 04:23:31,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2022-01-10 04:23:31,066 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:23:31,066 INFO L514 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 04:23:31,076 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 04:23:31,276 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 04:23:31,276 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:23:31,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:23:31,276 INFO L85 PathProgramCache]: Analyzing trace with hash 629045989, now seen corresponding path program 1 times [2022-01-10 04:23:31,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:23:31,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1921774977] [2022-01-10 04:23:31,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:23:31,278 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:23:31,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:23:31,279 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 04:23:31,280 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 04:23:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:23:31,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:23:31,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:23:32,060 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 04:23:32,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:23:32,060 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:23:32,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1921774977] [2022-01-10 04:23:32,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1921774977] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:23:32,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:23:32,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:23:32,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330624347] [2022-01-10 04:23:32,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:23:32,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:23:32,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:23:32,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:23:32,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:23:32,062 INFO L87 Difference]: Start difference. First operand 24530 states and 27676 transitions. Second operand has 4 states, 4 states have (on average 83.5) internal successors, (334), 3 states have internal predecessors, (334), 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 04:23:33,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:23:33,377 INFO L93 Difference]: Finished difference Result 46106 states and 52235 transitions. [2022-01-10 04:23:33,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:23:33,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 83.5) internal successors, (334), 3 states have internal predecessors, (334), 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 339 [2022-01-10 04:23:33,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:23:33,410 INFO L225 Difference]: With dead ends: 46106 [2022-01-10 04:23:33,410 INFO L226 Difference]: Without dead ends: 24534 [2022-01-10 04:23:33,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 336 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 04:23:33,429 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 371 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 04:23:33,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 118 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 04:23:33,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24534 states. [2022-01-10 04:23:33,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24534 to 24530. [2022-01-10 04:23:33,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24530 states, 24529 states have (on average 1.1236903257368829) internal successors, (27563), 24529 states have internal predecessors, (27563), 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 04:23:33,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24530 states to 24530 states and 27563 transitions. [2022-01-10 04:23:33,847 INFO L78 Accepts]: Start accepts. Automaton has 24530 states and 27563 transitions. Word has length 339 [2022-01-10 04:23:33,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:23:33,847 INFO L470 AbstractCegarLoop]: Abstraction has 24530 states and 27563 transitions. [2022-01-10 04:23:33,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.5) internal successors, (334), 3 states have internal predecessors, (334), 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 04:23:33,848 INFO L276 IsEmpty]: Start isEmpty. Operand 24530 states and 27563 transitions. [2022-01-10 04:23:33,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-01-10 04:23:33,869 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:23:33,870 INFO L514 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 04:23:33,879 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 04:23:34,079 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 04:23:34,080 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:23:34,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:23:34,080 INFO L85 PathProgramCache]: Analyzing trace with hash -703774975, now seen corresponding path program 1 times [2022-01-10 04:23:34,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:23:34,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1988676726] [2022-01-10 04:23:34,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:23:34,082 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:23:34,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:23:34,083 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 04:23:34,084 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 04:23:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:23:34,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:23:34,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:23:35,026 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-10 04:23:35,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:23:35,027 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:23:35,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1988676726] [2022-01-10 04:23:35,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1988676726] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:23:35,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:23:35,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:23:35,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520823521] [2022-01-10 04:23:35,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:23:35,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:23:35,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:23:35,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:23:35,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:23:35,029 INFO L87 Difference]: Start difference. First operand 24530 states and 27563 transitions. Second operand has 4 states, 4 states have (on average 75.25) internal successors, (301), 3 states have internal predecessors, (301), 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 04:23:36,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:23:36,474 INFO L93 Difference]: Finished difference Result 47740 states and 53766 transitions. [2022-01-10 04:23:36,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:23:36,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 3 states have internal predecessors, (301), 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 345 [2022-01-10 04:23:36,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:23:36,500 INFO L225 Difference]: With dead ends: 47740 [2022-01-10 04:23:36,500 INFO L226 Difference]: Without dead ends: 23732 [2022-01-10 04:23:36,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 342 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 04:23:36,517 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 335 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 04:23:36,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 143 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 04:23:36,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23732 states. [2022-01-10 04:23:36,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23732 to 23718. [2022-01-10 04:23:36,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23718 states, 23717 states have (on average 1.0936459079984822) internal successors, (25938), 23717 states have internal predecessors, (25938), 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 04:23:36,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23718 states to 23718 states and 25938 transitions. [2022-01-10 04:23:36,823 INFO L78 Accepts]: Start accepts. Automaton has 23718 states and 25938 transitions. Word has length 345 [2022-01-10 04:23:36,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:23:36,824 INFO L470 AbstractCegarLoop]: Abstraction has 23718 states and 25938 transitions. [2022-01-10 04:23:36,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 3 states have internal predecessors, (301), 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 04:23:36,824 INFO L276 IsEmpty]: Start isEmpty. Operand 23718 states and 25938 transitions. [2022-01-10 04:23:36,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2022-01-10 04:23:36,878 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:23:36,879 INFO L514 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 04:23:36,886 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 04:23:37,083 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 04:23:37,084 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:23:37,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:23:37,084 INFO L85 PathProgramCache]: Analyzing trace with hash 2145363101, now seen corresponding path program 1 times [2022-01-10 04:23:37,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:23:37,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [781796161] [2022-01-10 04:23:37,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:23:37,086 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:23:37,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:23:37,087 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 04:23:37,088 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 04:23:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:23:37,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:23:37,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:23:37,649 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 04:23:37,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:23:37,649 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:23:37,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [781796161] [2022-01-10 04:23:37,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [781796161] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:23:37,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:23:37,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:23:37,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803334153] [2022-01-10 04:23:37,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:23:37,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:23:37,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:23:37,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:23:37,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:23:37,651 INFO L87 Difference]: Start difference. First operand 23718 states and 25938 transitions. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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 04:23:38,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:23:38,616 INFO L93 Difference]: Finished difference Result 55035 states and 60166 transitions. [2022-01-10 04:23:38,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:23:38,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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 348 [2022-01-10 04:23:38,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:23:38,650 INFO L225 Difference]: With dead ends: 55035 [2022-01-10 04:23:38,650 INFO L226 Difference]: Without dead ends: 33463 [2022-01-10 04:23:38,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 346 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 04:23:38,669 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 208 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 04:23:38,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 332 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 04:23:38,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33463 states. [2022-01-10 04:23:39,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33463 to 33461. [2022-01-10 04:23:39,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33461 states, 33460 states have (on average 1.0711894799760908) internal successors, (35842), 33460 states have internal predecessors, (35842), 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 04:23:39,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33461 states to 33461 states and 35842 transitions. [2022-01-10 04:23:39,100 INFO L78 Accepts]: Start accepts. Automaton has 33461 states and 35842 transitions. Word has length 348 [2022-01-10 04:23:39,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:23:39,100 INFO L470 AbstractCegarLoop]: Abstraction has 33461 states and 35842 transitions. [2022-01-10 04:23:39,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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 04:23:39,101 INFO L276 IsEmpty]: Start isEmpty. Operand 33461 states and 35842 transitions. [2022-01-10 04:23:39,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-01-10 04:23:39,125 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:23:39,125 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 04:23:39,133 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 04:23:39,327 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 04:23:39,328 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:23:39,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:23:39,328 INFO L85 PathProgramCache]: Analyzing trace with hash -113239099, now seen corresponding path program 1 times [2022-01-10 04:23:39,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:23:39,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1430524956] [2022-01-10 04:23:39,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:23:39,330 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:23:39,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:23:39,331 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 04:23:39,332 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 04:23:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:23:39,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 04:23:39,487 INFO L286 TraceCheckSpWp]: Computing forward predicates...