/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_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 04:23:09,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 04:23:09,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 04:23:09,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 04:23:09,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 04:23:09,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 04:23:09,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 04:23:09,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 04:23:09,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 04:23:09,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 04:23:09,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 04:23:09,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 04:23:09,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 04:23:09,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 04:23:09,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 04:23:09,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 04:23:09,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 04:23:09,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 04:23:09,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 04:23:09,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 04:23:09,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 04:23:09,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 04:23:09,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 04:23:09,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 04:23:09,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 04:23:09,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 04:23:09,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 04:23:09,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 04:23:09,386 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 04:23:09,399 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 04:23:09,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 04:23:09,400 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 04:23:09,400 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 04:23:09,400 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 04:23:09,400 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 04:23:09,401 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 04:23:09,401 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 04:23:09,401 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 04:23:09,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 04:23:09,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 04:23:09,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 04:23:09,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 04:23:09,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 04:23:09,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 04:23:09,402 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 04:23:09,402 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 04:23:09,402 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 04:23:09,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 04:23:09,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 04:23:09,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 04:23:09,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 04:23:09,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 04:23:09,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:23:09,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 04:23:09,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 04:23:09,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 04:23:09,403 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 04:23:09,403 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 04:23:09,403 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 04:23:09,403 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 04:23:09,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 04:23:09,403 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 04:23:09,403 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 04:23:09,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 04:23:09,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 04:23:09,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 04:23:09,607 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 04:23:09,611 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 04:23:09,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label50.c [2022-01-10 04:23:09,671 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea2da5c76/2122c62f34e641cf90d6e9d4a83c3111/FLAG614d59584 [2022-01-10 04:23:10,150 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 04:23:10,150 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label50.c [2022-01-10 04:23:10,163 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea2da5c76/2122c62f34e641cf90d6e9d4a83c3111/FLAG614d59584 [2022-01-10 04:23:10,178 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea2da5c76/2122c62f34e641cf90d6e9d4a83c3111 [2022-01-10 04:23:10,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 04:23:10,183 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 04:23:10,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 04:23:10,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 04:23:10,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 04:23:10,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:23:10" (1/1) ... [2022-01-10 04:23:10,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12eba488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:23:10, skipping insertion in model container [2022-01-10 04:23:10,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:23:10" (1/1) ... [2022-01-10 04:23:10,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 04:23:10,276 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:23:10,691 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_label50.c[55003,55016] [2022-01-10 04:23:10,727 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:23:10,736 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 04:23:10,877 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_label50.c[55003,55016] [2022-01-10 04:23:10,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:23:10,906 INFO L208 MainTranslator]: Completed translation [2022-01-10 04:23:10,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:23:10 WrapperNode [2022-01-10 04:23:10,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 04:23:10,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 04:23:10,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 04:23:10,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 04:23:10,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:23:10" (1/1) ... [2022-01-10 04:23:10,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:23:10" (1/1) ... [2022-01-10 04:23:10,990 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1769 [2022-01-10 04:23:10,991 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 04:23:10,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 04:23:10,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 04:23:10,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 04:23:10,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:23:10" (1/1) ... [2022-01-10 04:23:10,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:23:10" (1/1) ... [2022-01-10 04:23:11,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:23:10" (1/1) ... [2022-01-10 04:23:11,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:23:10" (1/1) ... [2022-01-10 04:23:11,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:23:10" (1/1) ... [2022-01-10 04:23:11,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:23:10" (1/1) ... [2022-01-10 04:23:11,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:23:10" (1/1) ... [2022-01-10 04:23:11,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 04:23:11,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 04:23:11,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 04:23:11,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 04:23:11,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:23:10" (1/1) ... [2022-01-10 04:23:11,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:23:11,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 04:23:11,105 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 04:23:11,117 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 04:23:11,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 04:23:11,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 04:23:11,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 04:23:11,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 04:23:11,210 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 04:23:11,211 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 04:23:12,593 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 04:23:12,602 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 04:23:12,602 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 04:23:12,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:23:12 BoogieIcfgContainer [2022-01-10 04:23:12,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 04:23:12,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 04:23:12,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 04:23:12,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 04:23:12,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:23:10" (1/3) ... [2022-01-10 04:23:12,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd75ba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:23:12, skipping insertion in model container [2022-01-10 04:23:12,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:23:10" (2/3) ... [2022-01-10 04:23:12,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd75ba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:23:12, skipping insertion in model container [2022-01-10 04:23:12,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:23:12" (3/3) ... [2022-01-10 04:23:12,612 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label50.c [2022-01-10 04:23:12,616 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 04:23:12,616 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 04:23:12,658 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 04:23:12,664 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 04:23:12,665 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 04:23:12,684 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 04:23:12,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-01-10 04:23:12,696 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:23:12,696 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:23:12,697 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:23:12,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:23:12,701 INFO L85 PathProgramCache]: Analyzing trace with hash 131030986, now seen corresponding path program 1 times [2022-01-10 04:23:12,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:23:12,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030925869] [2022-01-10 04:23:12,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:23:12,713 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:23:12,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:23:12,733 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 04:23:12,734 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 04:23:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:23:12,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-10 04:23:12,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:23:30,334 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 04:23:30,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:23:30,335 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:23:30,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030925869] [2022-01-10 04:23:30,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1030925869] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:23:30,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:23:30,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 04:23:30,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123150177] [2022-01-10 04:23:30,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:23:30,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 04:23:30,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:23:30,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 04:23:30,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-10 04:23:30,364 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 15.4) internal successors, (154), 9 states have internal predecessors, (154), 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 04:23:36,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:23:36,373 INFO L93 Difference]: Finished difference Result 1135 states and 2084 transitions. [2022-01-10 04:23:36,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 04:23:36,375 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 9 states have internal predecessors, (154), 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 154 [2022-01-10 04:23:36,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:23:36,387 INFO L225 Difference]: With dead ends: 1135 [2022-01-10 04:23:36,387 INFO L226 Difference]: Without dead ends: 762 [2022-01-10 04:23:36,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2022-01-10 04:23:36,392 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 1582 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 4913 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 5311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 4913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-01-10 04:23:36,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1582 Valid, 429 Invalid, 5311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 4913 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-01-10 04:23:36,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2022-01-10 04:23:36,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 762. [2022-01-10 04:23:36,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 761 states have (on average 1.3915900131406045) internal successors, (1059), 761 states have internal predecessors, (1059), 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 04:23:36,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1059 transitions. [2022-01-10 04:23:36,440 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1059 transitions. Word has length 154 [2022-01-10 04:23:36,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:23:36,441 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 1059 transitions. [2022-01-10 04:23:36,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 9 states have internal predecessors, (154), 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 04:23:36,441 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1059 transitions. [2022-01-10 04:23:36,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-10 04:23:36,444 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:23:36,444 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:23:36,453 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 04:23:36,650 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 04:23:36,651 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:23:36,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:23:36,652 INFO L85 PathProgramCache]: Analyzing trace with hash 268396213, now seen corresponding path program 1 times [2022-01-10 04:23:36,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:23:36,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [553072068] [2022-01-10 04:23:36,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:23:36,654 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:23:36,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:23:36,655 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 04:23:36,656 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 04:23:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:23:36,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-10 04:23:36,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:23:49,037 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:23:49,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:23:49,038 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:23:49,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [553072068] [2022-01-10 04:23:49,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [553072068] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:23:49,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:23:49,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 04:23:49,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497401536] [2022-01-10 04:23:49,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:23:49,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 04:23:49,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:23:49,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 04:23:49,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-01-10 04:23:49,045 INFO L87 Difference]: Start difference. First operand 762 states and 1059 transitions. Second operand has 10 states, 10 states have (on average 16.1) internal successors, (161), 9 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 04:23:51,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:23:51,686 INFO L93 Difference]: Finished difference Result 1347 states and 2060 transitions. [2022-01-10 04:23:51,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 04:23:51,687 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.1) internal successors, (161), 9 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 161 [2022-01-10 04:23:51,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:23:51,693 INFO L225 Difference]: With dead ends: 1347 [2022-01-10 04:23:51,693 INFO L226 Difference]: Without dead ends: 903 [2022-01-10 04:23:51,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-01-10 04:23:51,697 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 497 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2907 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 3040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 04:23:51,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 313 Invalid, 3040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2907 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-10 04:23:51,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2022-01-10 04:23:51,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 903. [2022-01-10 04:23:51,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 902 states have (on average 1.3270509977827052) internal successors, (1197), 902 states have internal predecessors, (1197), 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 04:23:51,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1197 transitions. [2022-01-10 04:23:51,730 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1197 transitions. Word has length 161 [2022-01-10 04:23:51,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:23:51,731 INFO L470 AbstractCegarLoop]: Abstraction has 903 states and 1197 transitions. [2022-01-10 04:23:51,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.1) internal successors, (161), 9 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 04:23:51,731 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1197 transitions. [2022-01-10 04:23:51,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-10 04:23:51,734 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:23:51,734 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:23:51,744 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 04:23:51,943 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 04:23:51,944 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:23:51,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:23:51,944 INFO L85 PathProgramCache]: Analyzing trace with hash 2037187433, now seen corresponding path program 1 times [2022-01-10 04:23:51,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:23:51,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259742639] [2022-01-10 04:23:51,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:23:51,946 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:23:51,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:23:51,947 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 04:23:51,949 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 04:23:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:23:52,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:23:52,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:23:52,250 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 04:23:52,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:23:52,250 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:23:52,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259742639] [2022-01-10 04:23:52,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259742639] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:23:52,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:23:52,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:23:52,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647672443] [2022-01-10 04:23:52,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:23:52,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:23:52,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:23:52,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:23:52,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:23:52,271 INFO L87 Difference]: Start difference. First operand 903 states and 1197 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 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 04:23:53,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:23:53,150 INFO L93 Difference]: Finished difference Result 1766 states and 2608 transitions. [2022-01-10 04:23:53,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:23:53,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 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 181 [2022-01-10 04:23:53,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:23:53,154 INFO L225 Difference]: With dead ends: 1766 [2022-01-10 04:23:53,154 INFO L226 Difference]: Without dead ends: 1322 [2022-01-10 04:23:53,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 179 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 04:23:53,156 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 208 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 04:23:53,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 356 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 04:23:53,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2022-01-10 04:23:53,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1318. [2022-01-10 04:23:53,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1318 states, 1317 states have (on average 1.3310554290053151) internal successors, (1753), 1317 states have internal predecessors, (1753), 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 04:23:53,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 1753 transitions. [2022-01-10 04:23:53,173 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 1753 transitions. Word has length 181 [2022-01-10 04:23:53,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:23:53,173 INFO L470 AbstractCegarLoop]: Abstraction has 1318 states and 1753 transitions. [2022-01-10 04:23:53,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 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 04:23:53,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 1753 transitions. [2022-01-10 04:23:53,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-01-10 04:23:53,176 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:23:53,176 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2022-01-10 04:23:53,193 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 04:23:53,385 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 04:23:53,385 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:23:53,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:23:53,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1085998204, now seen corresponding path program 1 times [2022-01-10 04:23:53,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:23:53,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815652999] [2022-01-10 04:23:53,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:23:53,387 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:23:53,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:23:53,388 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 04:23:53,389 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 04:23:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:23:53,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:23:53,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:23:53,706 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 04:23:53,707 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:23:53,707 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:23:53,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815652999] [2022-01-10 04:23:53,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815652999] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:23:53,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:23:53,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:23:53,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886995432] [2022-01-10 04:23:53,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:23:53,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:23:53,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:23:53,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:23:53,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:23:53,709 INFO L87 Difference]: Start difference. First operand 1318 states and 1753 transitions. Second operand has 4 states, 4 states have (on average 44.25) internal successors, (177), 3 states have internal predecessors, (177), 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 04:23:54,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:23:54,829 INFO L93 Difference]: Finished difference Result 3653 states and 5264 transitions. [2022-01-10 04:23:54,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:23:54,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 3 states have internal predecessors, (177), 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 182 [2022-01-10 04:23:54,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:23:54,838 INFO L225 Difference]: With dead ends: 3653 [2022-01-10 04:23:54,838 INFO L226 Difference]: Without dead ends: 2794 [2022-01-10 04:23:54,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 179 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 04:23:54,840 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 645 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:23:54,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [645 Valid, 586 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 04:23:54,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2794 states. [2022-01-10 04:23:54,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2794 to 2786. [2022-01-10 04:23:54,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2786 states, 2785 states have (on average 1.3960502692998205) internal successors, (3888), 2785 states have internal predecessors, (3888), 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 04:23:54,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 3888 transitions. [2022-01-10 04:23:54,876 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 3888 transitions. Word has length 182 [2022-01-10 04:23:54,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:23:54,876 INFO L470 AbstractCegarLoop]: Abstraction has 2786 states and 3888 transitions. [2022-01-10 04:23:54,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 3 states have internal predecessors, (177), 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 04:23:54,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 3888 transitions. [2022-01-10 04:23:54,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-01-10 04:23:54,880 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:23:54,880 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:23:54,901 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 04:23:55,088 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 04:23:55,089 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:23:55,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:23:55,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1358013728, now seen corresponding path program 1 times [2022-01-10 04:23:55,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:23:55,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1432915132] [2022-01-10 04:23:55,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:23:55,091 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:23:55,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:23:55,092 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 04:23:55,092 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 04:23:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:23:55,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:23:55,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:23:55,439 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 04:23:55,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:23:55,439 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:23:55,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1432915132] [2022-01-10 04:23:55,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1432915132] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:23:55,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:23:55,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:23:55,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285003051] [2022-01-10 04:23:55,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:23:55,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:23:55,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:23:55,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:23:55,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:23:55,440 INFO L87 Difference]: Start difference. First operand 2786 states and 3888 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 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 04:23:56,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:23:56,304 INFO L93 Difference]: Finished difference Result 6539 states and 9425 transitions. [2022-01-10 04:23:56,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:23:56,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 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 195 [2022-01-10 04:23:56,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:23:56,314 INFO L225 Difference]: With dead ends: 6539 [2022-01-10 04:23:56,314 INFO L226 Difference]: Without dead ends: 4211 [2022-01-10 04:23:56,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 193 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 04:23:56,318 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 189 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 04:23:56,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 216 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 04:23:56,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4211 states. [2022-01-10 04:23:56,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4211 to 4207. [2022-01-10 04:23:56,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4207 states, 4206 states have (on average 1.2955301949595817) internal successors, (5449), 4206 states have internal predecessors, (5449), 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 04:23:56,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4207 states to 4207 states and 5449 transitions. [2022-01-10 04:23:56,374 INFO L78 Accepts]: Start accepts. Automaton has 4207 states and 5449 transitions. Word has length 195 [2022-01-10 04:23:56,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:23:56,374 INFO L470 AbstractCegarLoop]: Abstraction has 4207 states and 5449 transitions. [2022-01-10 04:23:56,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 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 04:23:56,374 INFO L276 IsEmpty]: Start isEmpty. Operand 4207 states and 5449 transitions. [2022-01-10 04:23:56,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-01-10 04:23:56,378 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:23:56,378 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:23:56,387 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 04:23:56,585 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 04:23:56,586 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:23:56,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:23:56,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1858085361, now seen corresponding path program 1 times [2022-01-10 04:23:56,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:23:56,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1523995265] [2022-01-10 04:23:56,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:23:56,588 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:23:56,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:23:56,590 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 04:23:56,591 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 04:23:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:23:56,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:23:56,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:23:56,985 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 04:23:56,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:23:56,985 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:23:56,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1523995265] [2022-01-10 04:23:56,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1523995265] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:23:56,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:23:56,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:23:56,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131214372] [2022-01-10 04:23:56,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:23:56,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:23:56,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:23:56,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:23:56,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:23:56,987 INFO L87 Difference]: Start difference. First operand 4207 states and 5449 transitions. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 3 states have internal predecessors, (205), 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 04:23:57,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:23:57,976 INFO L93 Difference]: Finished difference Result 9552 states and 12795 transitions. [2022-01-10 04:23:57,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:23:57,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2022-01-10 04:23:57,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:23:58,005 INFO L225 Difference]: With dead ends: 9552 [2022-01-10 04:23:58,005 INFO L226 Difference]: Without dead ends: 5803 [2022-01-10 04:23:58,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 207 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 04:23:58,008 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 547 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 04:23:58,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [547 Valid, 51 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 04:23:58,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5803 states. [2022-01-10 04:23:58,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5803 to 5794. [2022-01-10 04:23:58,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5794 states, 5793 states have (on average 1.278784740203694) internal successors, (7408), 5793 states have internal predecessors, (7408), 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 04:23:58,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5794 states to 5794 states and 7408 transitions. [2022-01-10 04:23:58,069 INFO L78 Accepts]: Start accepts. Automaton has 5794 states and 7408 transitions. Word has length 210 [2022-01-10 04:23:58,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:23:58,069 INFO L470 AbstractCegarLoop]: Abstraction has 5794 states and 7408 transitions. [2022-01-10 04:23:58,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 3 states have internal predecessors, (205), 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 04:23:58,069 INFO L276 IsEmpty]: Start isEmpty. Operand 5794 states and 7408 transitions. [2022-01-10 04:23:58,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-01-10 04:23:58,075 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:23:58,075 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 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, 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] [2022-01-10 04:23:58,095 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 04:23:58,282 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 04:23:58,282 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:23:58,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:23:58,283 INFO L85 PathProgramCache]: Analyzing trace with hash -506589195, now seen corresponding path program 1 times [2022-01-10 04:23:58,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:23:58,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497896275] [2022-01-10 04:23:58,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:23:58,284 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:23:58,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:23:58,285 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 04:23:58,287 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 04:23:58,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:23:58,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:23:58,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:23:58,657 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-01-10 04:23:58,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:23:58,657 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:23:58,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [497896275] [2022-01-10 04:23:58,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [497896275] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:23:58,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:23:58,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:23:58,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615290335] [2022-01-10 04:23:58,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:23:58,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:23:58,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:23:58,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:23:58,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:23:58,659 INFO L87 Difference]: Start difference. First operand 5794 states and 7408 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 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 04:23:59,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:23:59,497 INFO L93 Difference]: Finished difference Result 13367 states and 17746 transitions. [2022-01-10 04:23:59,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:23:59,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 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 249 [2022-01-10 04:23:59,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:23:59,517 INFO L225 Difference]: With dead ends: 13367 [2022-01-10 04:23:59,517 INFO L226 Difference]: Without dead ends: 8640 [2022-01-10 04:23:59,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 247 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 04:23:59,523 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 184 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 04:23:59,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 358 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 04:23:59,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8640 states. [2022-01-10 04:23:59,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8640 to 7215. [2022-01-10 04:23:59,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7215 states, 7214 states have (on average 1.2360687551982257) internal successors, (8917), 7214 states have internal predecessors, (8917), 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 04:23:59,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7215 states to 7215 states and 8917 transitions. [2022-01-10 04:23:59,611 INFO L78 Accepts]: Start accepts. Automaton has 7215 states and 8917 transitions. Word has length 249 [2022-01-10 04:23:59,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:23:59,611 INFO L470 AbstractCegarLoop]: Abstraction has 7215 states and 8917 transitions. [2022-01-10 04:23:59,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 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 04:23:59,613 INFO L276 IsEmpty]: Start isEmpty. Operand 7215 states and 8917 transitions. [2022-01-10 04:23:59,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-01-10 04:23:59,623 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:23:59,623 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, 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] [2022-01-10 04:23:59,632 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 04:23:59,830 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 04:23:59,831 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:23:59,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:23:59,831 INFO L85 PathProgramCache]: Analyzing trace with hash 489316081, now seen corresponding path program 1 times [2022-01-10 04:23:59,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:23:59,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [653068108] [2022-01-10 04:23:59,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:23:59,833 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:23:59,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:23:59,834 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 04:23:59,835 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 04:23:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:23:59,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:23:59,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:24:00,343 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-01-10 04:24:00,343 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:24:00,343 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:24:00,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [653068108] [2022-01-10 04:24:00,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [653068108] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:24:00,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:24:00,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:24:00,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959514593] [2022-01-10 04:24:00,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:24:00,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:24:00,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:24:00,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:24:00,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:24:00,345 INFO L87 Difference]: Start difference. First operand 7215 states and 8917 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 04:24:01,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:24:01,162 INFO L93 Difference]: Finished difference Result 17026 states and 21127 transitions. [2022-01-10 04:24:01,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:24:01,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 264 [2022-01-10 04:24:01,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:24:01,183 INFO L225 Difference]: With dead ends: 17026 [2022-01-10 04:24:01,183 INFO L226 Difference]: Without dead ends: 9660 [2022-01-10 04:24:01,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 262 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 04:24:01,190 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 165 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 04:24:01,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 361 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 04:24:01,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9660 states. [2022-01-10 04:24:01,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9660 to 9436. [2022-01-10 04:24:01,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9436 states, 9435 states have (on average 1.1355590885002649) internal successors, (10714), 9435 states have internal predecessors, (10714), 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 04:24:01,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9436 states to 9436 states and 10714 transitions. [2022-01-10 04:24:01,289 INFO L78 Accepts]: Start accepts. Automaton has 9436 states and 10714 transitions. Word has length 264 [2022-01-10 04:24:01,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:24:01,289 INFO L470 AbstractCegarLoop]: Abstraction has 9436 states and 10714 transitions. [2022-01-10 04:24:01,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 04:24:01,289 INFO L276 IsEmpty]: Start isEmpty. Operand 9436 states and 10714 transitions. [2022-01-10 04:24:01,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-01-10 04:24:01,296 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:24:01,296 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-10 04:24:01,305 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 04:24:01,503 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 04:24:01,503 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:24:01,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:24:01,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1729328884, now seen corresponding path program 1 times [2022-01-10 04:24:01,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:24:01,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668324291] [2022-01-10 04:24:01,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:24:01,505 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:24:01,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:24:01,506 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 04:24:01,507 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 04:24:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:24:01,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:24:01,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:24:02,104 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-01-10 04:24:02,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:24:02,104 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:24:02,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668324291] [2022-01-10 04:24:02,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668324291] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:24:02,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:24:02,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:24:02,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467914945] [2022-01-10 04:24:02,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:24:02,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:24:02,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:24:02,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:24:02,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:24:02,106 INFO L87 Difference]: Start difference. First operand 9436 states and 10714 transitions. Second operand has 4 states, 4 states have (on average 60.0) internal successors, (240), 3 states have internal predecessors, (240), 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 04:24:03,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:24:03,253 INFO L93 Difference]: Finished difference Result 23115 states and 26505 transitions. [2022-01-10 04:24:03,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:24:03,254 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 3 states have internal predecessors, (240), 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 280 [2022-01-10 04:24:03,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:24:03,274 INFO L225 Difference]: With dead ends: 23115 [2022-01-10 04:24:03,274 INFO L226 Difference]: Without dead ends: 13719 [2022-01-10 04:24:03,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 277 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 04:24:03,284 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 375 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:24:03,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 75 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 04:24:03,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13719 states. [2022-01-10 04:24:03,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13719 to 13293. [2022-01-10 04:24:03,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13293 states, 13292 states have (on average 1.1479085164008427) internal successors, (15258), 13292 states have internal predecessors, (15258), 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 04:24:03,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13293 states to 13293 states and 15258 transitions. [2022-01-10 04:24:03,416 INFO L78 Accepts]: Start accepts. Automaton has 13293 states and 15258 transitions. Word has length 280 [2022-01-10 04:24:03,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:24:03,416 INFO L470 AbstractCegarLoop]: Abstraction has 13293 states and 15258 transitions. [2022-01-10 04:24:03,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 3 states have internal predecessors, (240), 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 04:24:03,416 INFO L276 IsEmpty]: Start isEmpty. Operand 13293 states and 15258 transitions. [2022-01-10 04:24:03,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-01-10 04:24:03,425 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:24:03,426 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:24:03,435 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 04:24:03,633 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 04:24:03,633 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:24:03,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:24:03,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1536429212, now seen corresponding path program 1 times [2022-01-10 04:24:03,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:24:03,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1726072778] [2022-01-10 04:24:03,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:24:03,636 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:24:03,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:24:03,637 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 04:24:03,638 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 04:24:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:24:03,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:24:03,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:24:04,328 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-10 04:24:04,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:24:04,328 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:24:04,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1726072778] [2022-01-10 04:24:04,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1726072778] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:24:04,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:24:04,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:24:04,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060007473] [2022-01-10 04:24:04,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:24:04,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:24:04,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:24:04,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:24:04,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:24:04,329 INFO L87 Difference]: Start difference. First operand 13293 states and 15258 transitions. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 2 states have internal predecessors, (252), 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 04:24:05,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:24:05,052 INFO L93 Difference]: Finished difference Result 28804 states and 33231 transitions. [2022-01-10 04:24:05,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:24:05,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 2 states have internal predecessors, (252), 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 291 [2022-01-10 04:24:05,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:24:05,078 INFO L225 Difference]: With dead ends: 28804 [2022-01-10 04:24:05,079 INFO L226 Difference]: Without dead ends: 16769 [2022-01-10 04:24:05,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 289 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 04:24:05,090 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 131 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 04:24:05,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 70 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 04:24:05,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16769 states. [2022-01-10 04:24:05,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16769 to 16158. [2022-01-10 04:24:05,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16158 states, 16157 states have (on average 1.1521940954385097) internal successors, (18616), 16157 states have internal predecessors, (18616), 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 04:24:05,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16158 states to 16158 states and 18616 transitions. [2022-01-10 04:24:05,311 INFO L78 Accepts]: Start accepts. Automaton has 16158 states and 18616 transitions. Word has length 291 [2022-01-10 04:24:05,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:24:05,311 INFO L470 AbstractCegarLoop]: Abstraction has 16158 states and 18616 transitions. [2022-01-10 04:24:05,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 2 states have internal predecessors, (252), 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 04:24:05,311 INFO L276 IsEmpty]: Start isEmpty. Operand 16158 states and 18616 transitions. [2022-01-10 04:24:05,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-01-10 04:24:05,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:24:05,323 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 04:24:05,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-01-10 04:24:05,529 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 04:24:05,530 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:24:05,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:24:05,530 INFO L85 PathProgramCache]: Analyzing trace with hash 272016088, now seen corresponding path program 1 times [2022-01-10 04:24:05,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:24:05,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622689033] [2022-01-10 04:24:05,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:24:05,532 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:24:05,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:24:05,533 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 04:24:05,534 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 04:24:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:24:05,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:24:05,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:24:06,242 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-10 04:24:06,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:24:06,242 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:24:06,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622689033] [2022-01-10 04:24:06,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622689033] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:24:06,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:24:06,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:24:06,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051438406] [2022-01-10 04:24:06,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:24:06,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:24:06,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:24:06,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:24:06,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:24:06,248 INFO L87 Difference]: Start difference. First operand 16158 states and 18616 transitions. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 2 states have internal predecessors, (259), 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 04:24:07,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:24:07,040 INFO L93 Difference]: Finished difference Result 34917 states and 40618 transitions. [2022-01-10 04:24:07,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:24:07,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 2 states have internal predecessors, (259), 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 297 [2022-01-10 04:24:07,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:24:07,061 INFO L225 Difference]: With dead ends: 34917 [2022-01-10 04:24:07,061 INFO L226 Difference]: Without dead ends: 19205 [2022-01-10 04:24:07,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 295 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 04:24:07,070 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 112 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 04:24:07,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 119 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 04:24:07,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19205 states. [2022-01-10 04:24:07,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19205 to 18391. [2022-01-10 04:24:07,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18391 states, 18390 states have (on average 1.1417074497009245) internal successors, (20996), 18390 states have internal predecessors, (20996), 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 04:24:07,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18391 states to 18391 states and 20996 transitions. [2022-01-10 04:24:07,241 INFO L78 Accepts]: Start accepts. Automaton has 18391 states and 20996 transitions. Word has length 297 [2022-01-10 04:24:07,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:24:07,242 INFO L470 AbstractCegarLoop]: Abstraction has 18391 states and 20996 transitions. [2022-01-10 04:24:07,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 2 states have internal predecessors, (259), 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 04:24:07,242 INFO L276 IsEmpty]: Start isEmpty. Operand 18391 states and 20996 transitions. [2022-01-10 04:24:07,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-01-10 04:24:07,252 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:24:07,252 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 04:24:07,275 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 04:24:07,459 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 04:24:07,460 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:24:07,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:24:07,460 INFO L85 PathProgramCache]: Analyzing trace with hash 312407779, now seen corresponding path program 1 times [2022-01-10 04:24:07,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:24:07,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285674253] [2022-01-10 04:24:07,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:24:07,462 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:24:07,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:24:07,463 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 04:24:07,464 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 04:24:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:24:07,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:24:07,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:24:07,934 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-01-10 04:24:07,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:24:07,935 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:24:07,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285674253] [2022-01-10 04:24:07,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285674253] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:24:07,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:24:07,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:24:07,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595876932] [2022-01-10 04:24:07,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:24:07,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:24:07,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:24:07,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:24:07,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:24:07,936 INFO L87 Difference]: Start difference. First operand 18391 states and 20996 transitions. Second operand has 4 states, 4 states have (on average 64.5) internal successors, (258), 3 states have internal predecessors, (258), 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 04:24:08,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:24:08,952 INFO L93 Difference]: Finished difference Result 53272 states and 61209 transitions. [2022-01-10 04:24:08,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:24:08,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 3 states have internal predecessors, (258), 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 298 [2022-01-10 04:24:08,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:24:09,000 INFO L225 Difference]: With dead ends: 53272 [2022-01-10 04:24:09,000 INFO L226 Difference]: Without dead ends: 36139 [2022-01-10 04:24:09,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 295 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 04:24:09,016 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 446 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 04:24:09,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 428 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 04:24:09,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36139 states. [2022-01-10 04:24:09,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36139 to 35926. [2022-01-10 04:24:09,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35926 states, 35925 states have (on average 1.1409881697981907) internal successors, (40990), 35925 states have internal predecessors, (40990), 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 04:24:09,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35926 states to 35926 states and 40990 transitions. [2022-01-10 04:24:09,407 INFO L78 Accepts]: Start accepts. Automaton has 35926 states and 40990 transitions. Word has length 298 [2022-01-10 04:24:09,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:24:09,407 INFO L470 AbstractCegarLoop]: Abstraction has 35926 states and 40990 transitions. [2022-01-10 04:24:09,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 3 states have internal predecessors, (258), 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 04:24:09,407 INFO L276 IsEmpty]: Start isEmpty. Operand 35926 states and 40990 transitions. [2022-01-10 04:24:09,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-01-10 04:24:09,418 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:24:09,418 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 04:24:09,427 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 04:24:09,619 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 04:24:09,619 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:24:09,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:24:09,620 INFO L85 PathProgramCache]: Analyzing trace with hash 392553811, now seen corresponding path program 1 times [2022-01-10 04:24:09,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:24:09,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765287124] [2022-01-10 04:24:09,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:24:09,622 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:24:09,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:24:09,622 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 04:24:09,623 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 04:24:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:24:09,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:24:09,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:24:10,362 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-01-10 04:24:10,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:24:10,362 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:24:10,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765287124] [2022-01-10 04:24:10,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765287124] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:24:10,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:24:10,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:24:10,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029535148] [2022-01-10 04:24:10,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:24:10,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:24:10,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:24:10,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:24:10,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:24:10,363 INFO L87 Difference]: Start difference. First operand 35926 states and 40990 transitions. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 2 states have internal predecessors, (257), 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 04:24:11,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:24:11,206 INFO L93 Difference]: Finished difference Result 76708 states and 88001 transitions. [2022-01-10 04:24:11,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:24:11,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 2 states have internal predecessors, (257), 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 310 [2022-01-10 04:24:11,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:24:11,251 INFO L225 Difference]: With dead ends: 76708 [2022-01-10 04:24:11,251 INFO L226 Difference]: Without dead ends: 42040 [2022-01-10 04:24:11,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 308 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 04:24:11,355 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 119 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 04:24:11,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 101 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 04:24:11,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42040 states. [2022-01-10 04:24:11,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42040 to 35474. [2022-01-10 04:24:11,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35474 states, 35473 states have (on average 1.1379077044512729) internal successors, (40365), 35473 states have internal predecessors, (40365), 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 04:24:11,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35474 states to 35474 states and 40365 transitions. [2022-01-10 04:24:11,728 INFO L78 Accepts]: Start accepts. Automaton has 35474 states and 40365 transitions. Word has length 310 [2022-01-10 04:24:11,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:24:11,728 INFO L470 AbstractCegarLoop]: Abstraction has 35474 states and 40365 transitions. [2022-01-10 04:24:11,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 2 states have internal predecessors, (257), 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 04:24:11,728 INFO L276 IsEmpty]: Start isEmpty. Operand 35474 states and 40365 transitions. [2022-01-10 04:24:11,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2022-01-10 04:24:11,739 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:24:11,739 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:24:11,746 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 04:24:11,945 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 04:24:11,946 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:24:11,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:24:11,946 INFO L85 PathProgramCache]: Analyzing trace with hash -769974965, now seen corresponding path program 1 times [2022-01-10 04:24:11,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:24:11,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647954719] [2022-01-10 04:24:11,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:24:11,949 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:24:11,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:24:11,950 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 04:24:11,950 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 04:24:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:24:12,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 04:24:12,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:24:12,666 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 232 proven. 73 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-01-10 04:24:12,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:24:13,249 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 232 proven. 73 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-01-10 04:24:13,249 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:24:13,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647954719] [2022-01-10 04:24:13,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647954719] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:24:13,249 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:24:13,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2022-01-10 04:24:13,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758712065] [2022-01-10 04:24:13,250 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:24:13,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 04:24:13,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:24:13,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 04:24:13,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:24:13,251 INFO L87 Difference]: Start difference. First operand 35474 states and 40365 transitions. Second operand has 5 states, 5 states have (on average 76.4) internal successors, (382), 4 states have internal predecessors, (382), 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)