/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/Problem14_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 05:19:00,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 05:19:00,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 05:19:01,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 05:19:01,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 05:19:01,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 05:19:01,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 05:19:01,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 05:19:01,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 05:19:01,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 05:19:01,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 05:19:01,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 05:19:01,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 05:19:01,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 05:19:01,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 05:19:01,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 05:19:01,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 05:19:01,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 05:19:01,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 05:19:01,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 05:19:01,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 05:19:01,061 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 05:19:01,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 05:19:01,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 05:19:01,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 05:19:01,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 05:19:01,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 05:19:01,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 05:19:01,077 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 05:19:01,107 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 05:19:01,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 05:19:01,108 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 05:19:01,108 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 05:19:01,108 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 05:19:01,108 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 05:19:01,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 05:19:01,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 05:19:01,109 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 05:19:01,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 05:19:01,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 05:19:01,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 05:19:01,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 05:19:01,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 05:19:01,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 05:19:01,110 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 05:19:01,110 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 05:19:01,110 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 05:19:01,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 05:19:01,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 05:19:01,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 05:19:01,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 05:19:01,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 05:19:01,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:19:01,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 05:19:01,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 05:19:01,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 05:19:01,112 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 05:19:01,112 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 05:19:01,112 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 05:19:01,112 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 05:19:01,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 05:19:01,113 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 05:19:01,113 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 05:19:01,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 05:19:01,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 05:19:01,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 05:19:01,336 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 05:19:01,337 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 05:19:01,338 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label49.c [2022-01-10 05:19:01,392 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28068e563/1a17fadfc83743dd8c97ba072c6e90aa/FLAGaf53a4b99 [2022-01-10 05:19:01,849 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 05:19:01,849 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label49.c [2022-01-10 05:19:01,877 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28068e563/1a17fadfc83743dd8c97ba072c6e90aa/FLAGaf53a4b99 [2022-01-10 05:19:01,889 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28068e563/1a17fadfc83743dd8c97ba072c6e90aa [2022-01-10 05:19:01,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 05:19:01,893 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 05:19:01,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 05:19:01,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 05:19:01,897 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 05:19:01,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:19:01" (1/1) ... [2022-01-10 05:19:01,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25bbc0d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:19:01, skipping insertion in model container [2022-01-10 05:19:01,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:19:01" (1/1) ... [2022-01-10 05:19:01,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 05:19:01,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 05:19:02,168 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/Problem14_label49.c[6042,6055] [2022-01-10 05:19:02,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:19:02,334 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 05:19:02,367 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/Problem14_label49.c[6042,6055] [2022-01-10 05:19:02,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:19:02,489 INFO L208 MainTranslator]: Completed translation [2022-01-10 05:19:02,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:19:02 WrapperNode [2022-01-10 05:19:02,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 05:19:02,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 05:19:02,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 05:19:02,491 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 05:19:02,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:19:02" (1/1) ... [2022-01-10 05:19:02,519 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:19:02" (1/1) ... [2022-01-10 05:19:02,565 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 856 [2022-01-10 05:19:02,565 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 05:19:02,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 05:19:02,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 05:19:02,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 05:19:02,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:19:02" (1/1) ... [2022-01-10 05:19:02,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:19:02" (1/1) ... [2022-01-10 05:19:02,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:19:02" (1/1) ... [2022-01-10 05:19:02,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:19:02" (1/1) ... [2022-01-10 05:19:02,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:19:02" (1/1) ... [2022-01-10 05:19:02,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:19:02" (1/1) ... [2022-01-10 05:19:02,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:19:02" (1/1) ... [2022-01-10 05:19:02,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 05:19:02,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 05:19:02,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 05:19:02,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 05:19:02,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:19:02" (1/1) ... [2022-01-10 05:19:02,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:19:02,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 05:19:02,652 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 05:19:02,671 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 05:19:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 05:19:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 05:19:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 05:19:02,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 05:19:02,754 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 05:19:02,755 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 05:19:04,869 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 05:19:04,875 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 05:19:04,876 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 05:19:04,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:19:04 BoogieIcfgContainer [2022-01-10 05:19:04,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 05:19:04,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 05:19:04,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 05:19:04,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 05:19:04,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:19:01" (1/3) ... [2022-01-10 05:19:04,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df4b417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:19:04, skipping insertion in model container [2022-01-10 05:19:04,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:19:02" (2/3) ... [2022-01-10 05:19:04,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df4b417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:19:04, skipping insertion in model container [2022-01-10 05:19:04,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:19:04" (3/3) ... [2022-01-10 05:19:04,883 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label49.c [2022-01-10 05:19:04,886 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 05:19:04,886 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 05:19:04,916 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 05:19:04,920 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 05:19:04,920 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 05:19:04,937 INFO L276 IsEmpty]: Start isEmpty. Operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:19:04,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 05:19:04,944 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:19:04,944 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] [2022-01-10 05:19:04,944 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:19:04,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:19:04,948 INFO L85 PathProgramCache]: Analyzing trace with hash 118092897, now seen corresponding path program 1 times [2022-01-10 05:19:04,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:19:04,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [664383432] [2022-01-10 05:19:04,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:19:04,957 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:19:04,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:19:04,959 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 05:19:04,959 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 05:19:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:19:05,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:19:05,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:19:05,278 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 05:19:05,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:19:05,279 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:19:05,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [664383432] [2022-01-10 05:19:05,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [664383432] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:19:05,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:19:05,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:19:05,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079328217] [2022-01-10 05:19:05,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:19:05,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:19:05,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:19:05,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:19:05,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:19:05,320 INFO L87 Difference]: Start difference. First operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:19:08,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:19:08,322 INFO L93 Difference]: Finished difference Result 669 states and 1200 transitions. [2022-01-10 05:19:08,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:19:08,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 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 59 [2022-01-10 05:19:08,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:19:08,334 INFO L225 Difference]: With dead ends: 669 [2022-01-10 05:19:08,334 INFO L226 Difference]: Without dead ends: 360 [2022-01-10 05:19:08,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:19:08,339 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 136 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-10 05:19:08,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 131 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-01-10 05:19:08,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-01-10 05:19:08,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2022-01-10 05:19:08,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.4874651810584958) internal successors, (534), 359 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:19:08,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 534 transitions. [2022-01-10 05:19:08,397 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 534 transitions. Word has length 59 [2022-01-10 05:19:08,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:19:08,397 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 534 transitions. [2022-01-10 05:19:08,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:19:08,398 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 534 transitions. [2022-01-10 05:19:08,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 05:19:08,401 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:19:08,401 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:19:08,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 05:19:08,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:19:08,608 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:19:08,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:19:08,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1164883436, now seen corresponding path program 1 times [2022-01-10 05:19:08,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:19:08,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670845572] [2022-01-10 05:19:08,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:19:08,610 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:19:08,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:19:08,613 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:19:08,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 05:19:08,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:19:08,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:19:08,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:19:08,947 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:19:08,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:19:08,951 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:19:08,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670845572] [2022-01-10 05:19:08,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670845572] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:19:08,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:19:08,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:19:08,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675580835] [2022-01-10 05:19:08,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:19:08,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:19:08,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:19:08,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:19:08,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:19:08,954 INFO L87 Difference]: Start difference. First operand 360 states and 534 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:19:12,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:19:12,022 INFO L93 Difference]: Finished difference Result 1074 states and 1597 transitions. [2022-01-10 05:19:12,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:19:12,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 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 124 [2022-01-10 05:19:12,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:19:12,025 INFO L225 Difference]: With dead ends: 1074 [2022-01-10 05:19:12,025 INFO L226 Difference]: Without dead ends: 716 [2022-01-10 05:19:12,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:19:12,027 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 115 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-10 05:19:12,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 102 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-01-10 05:19:12,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-01-10 05:19:12,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2022-01-10 05:19:12,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 1.3454545454545455) internal successors, (962), 715 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:19:12,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 962 transitions. [2022-01-10 05:19:12,047 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 962 transitions. Word has length 124 [2022-01-10 05:19:12,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:19:12,047 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 962 transitions. [2022-01-10 05:19:12,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:19:12,048 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 962 transitions. [2022-01-10 05:19:12,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 05:19:12,050 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:19:12,050 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:19:12,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 05:19:12,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:19:12,260 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:19:12,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:19:12,261 INFO L85 PathProgramCache]: Analyzing trace with hash 764460886, now seen corresponding path program 1 times [2022-01-10 05:19:12,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:19:12,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494001499] [2022-01-10 05:19:12,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:19:12,262 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:19:12,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:19:12,263 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:19:12,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 05:19:12,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:19:12,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:19:12,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:19:12,565 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:19:12,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:19:12,565 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:19:12,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494001499] [2022-01-10 05:19:12,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1494001499] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:19:12,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:19:12,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:19:12,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133095969] [2022-01-10 05:19:12,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:19:12,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:19:12,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:19:12,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:19:12,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:19:12,567 INFO L87 Difference]: Start difference. First operand 716 states and 962 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:19:15,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:19:15,202 INFO L93 Difference]: Finished difference Result 1964 states and 2655 transitions. [2022-01-10 05:19:15,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:19:15,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 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 127 [2022-01-10 05:19:15,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:19:15,208 INFO L225 Difference]: With dead ends: 1964 [2022-01-10 05:19:15,208 INFO L226 Difference]: Without dead ends: 1250 [2022-01-10 05:19:15,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:19:15,213 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 129 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-10 05:19:15,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 89 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-10 05:19:15,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2022-01-10 05:19:15,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1250. [2022-01-10 05:19:15,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 1.245796637309848) internal successors, (1556), 1249 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:19:15,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1556 transitions. [2022-01-10 05:19:15,236 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1556 transitions. Word has length 127 [2022-01-10 05:19:15,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:19:15,237 INFO L470 AbstractCegarLoop]: Abstraction has 1250 states and 1556 transitions. [2022-01-10 05:19:15,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:19:15,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1556 transitions. [2022-01-10 05:19:15,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-01-10 05:19:15,246 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:19:15,246 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, 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] [2022-01-10 05:19:15,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 05:19:15,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:19:15,448 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:19:15,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:19:15,449 INFO L85 PathProgramCache]: Analyzing trace with hash 231254275, now seen corresponding path program 1 times [2022-01-10 05:19:15,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:19:15,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177411137] [2022-01-10 05:19:15,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:19:15,450 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:19:15,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:19:15,451 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:19:15,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 05:19:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:19:15,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 05:19:15,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:19:16,194 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-10 05:19:16,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:19:16,194 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:19:16,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177411137] [2022-01-10 05:19:16,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1177411137] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:19:16,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:19:16,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 05:19:16,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914571315] [2022-01-10 05:19:16,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:19:16,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 05:19:16,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:19:16,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 05:19:16,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 05:19:16,196 INFO L87 Difference]: Start difference. First operand 1250 states and 1556 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:19:18,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:19:18,352 INFO L93 Difference]: Finished difference Result 2171 states and 2741 transitions. [2022-01-10 05:19:18,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 05:19:18,353 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2022-01-10 05:19:18,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:19:18,359 INFO L225 Difference]: With dead ends: 2171 [2022-01-10 05:19:18,359 INFO L226 Difference]: Without dead ends: 1072 [2022-01-10 05:19:18,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 205 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 05:19:18,361 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 103 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 05:19:18,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 114 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 05:19:18,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2022-01-10 05:19:18,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1072. [2022-01-10 05:19:18,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 1071 states have (on average 1.239028944911298) internal successors, (1327), 1071 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:19:18,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1327 transitions. [2022-01-10 05:19:18,393 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1327 transitions. Word has length 208 [2022-01-10 05:19:18,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:19:18,394 INFO L470 AbstractCegarLoop]: Abstraction has 1072 states and 1327 transitions. [2022-01-10 05:19:18,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:19:18,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1327 transitions. [2022-01-10 05:19:18,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-01-10 05:19:18,396 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:19:18,396 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, 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] [2022-01-10 05:19:18,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 05:19:18,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:19:18,604 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:19:18,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:19:18,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1321467742, now seen corresponding path program 1 times [2022-01-10 05:19:18,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:19:18,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515104584] [2022-01-10 05:19:18,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:19:18,605 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:19:18,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:19:18,606 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:19:18,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 05:19:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:19:18,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 05:19:18,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:19:19,543 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-01-10 05:19:19,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:19:19,543 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:19:19,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515104584] [2022-01-10 05:19:19,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [515104584] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:19:19,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:19:19,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:19:19,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518125020] [2022-01-10 05:19:19,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:19:19,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:19:19,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:19:19,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:19:19,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:19:19,546 INFO L87 Difference]: Start difference. First operand 1072 states and 1327 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:19:21,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:19:21,466 INFO L93 Difference]: Finished difference Result 1786 states and 2287 transitions. [2022-01-10 05:19:21,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:19:21,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 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 234 [2022-01-10 05:19:21,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:19:21,470 INFO L225 Difference]: With dead ends: 1786 [2022-01-10 05:19:21,470 INFO L226 Difference]: Without dead ends: 1072 [2022-01-10 05:19:21,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:19:21,471 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 73 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 05:19:21,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 123 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 05:19:21,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2022-01-10 05:19:21,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1072. [2022-01-10 05:19:21,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 1071 states have (on average 1.2334267040149394) internal successors, (1321), 1071 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:19:21,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1321 transitions. [2022-01-10 05:19:21,485 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1321 transitions. Word has length 234 [2022-01-10 05:19:21,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:19:21,485 INFO L470 AbstractCegarLoop]: Abstraction has 1072 states and 1321 transitions. [2022-01-10 05:19:21,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:19:21,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1321 transitions. [2022-01-10 05:19:21,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-01-10 05:19:21,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:19:21,488 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 05:19:21,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-01-10 05:19:21,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:19:21,696 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:19:21,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:19:21,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1056584497, now seen corresponding path program 1 times [2022-01-10 05:19:21,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:19:21,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886615139] [2022-01-10 05:19:21,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:19:21,698 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:19:21,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:19:21,699 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:19:21,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 05:19:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:19:21,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 05:19:21,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:19:22,382 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 170 proven. 135 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-01-10 05:19:22,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 05:19:23,124 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 305 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-01-10 05:19:23,125 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:19:23,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886615139] [2022-01-10 05:19:23,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886615139] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 05:19:23,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 05:19:23,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-10 05:19:23,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151031629] [2022-01-10 05:19:23,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:19:23,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:19:23,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:19:23,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:19:23,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 05:19:23,126 INFO L87 Difference]: Start difference. First operand 1072 states and 1321 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:19:28,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:19:28,798 INFO L93 Difference]: Finished difference Result 2142 states and 2812 transitions. [2022-01-10 05:19:28,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:19:28,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 338 [2022-01-10 05:19:28,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:19:28,803 INFO L225 Difference]: With dead ends: 2142 [2022-01-10 05:19:28,803 INFO L226 Difference]: Without dead ends: 1428 [2022-01-10 05:19:28,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 671 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 05:19:28,804 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 133 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-01-10 05:19:28,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 59 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-01-10 05:19:28,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2022-01-10 05:19:28,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1428. [2022-01-10 05:19:28,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 1.238262088297127) internal successors, (1767), 1427 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:19:28,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1767 transitions. [2022-01-10 05:19:28,821 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1767 transitions. Word has length 338 [2022-01-10 05:19:28,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:19:28,823 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1767 transitions. [2022-01-10 05:19:28,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:19:28,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1767 transitions. [2022-01-10 05:19:28,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2022-01-10 05:19:28,827 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:19:28,827 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:19:28,847 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 05:19:29,039 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 05:19:29,040 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:19:29,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:19:29,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1180735245, now seen corresponding path program 1 times [2022-01-10 05:19:29,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:19:29,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1167297183] [2022-01-10 05:19:29,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:19:29,041 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:19:29,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:19:29,042 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 05:19:29,044 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 05:19:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:19:29,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 05:19:29,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:19:29,863 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 447 proven. 159 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-01-10 05:19:29,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 05:19:31,175 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 606 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-01-10 05:19:31,176 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:19:31,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1167297183] [2022-01-10 05:19:31,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1167297183] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 05:19:31,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 05:19:31,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-10 05:19:31,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624422756] [2022-01-10 05:19:31,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:19:31,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:19:31,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:19:31,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:19:31,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 05:19:31,177 INFO L87 Difference]: Start difference. First operand 1428 states and 1767 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:19:36,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:19:36,466 INFO L93 Difference]: Finished difference Result 3210 states and 4150 transitions. [2022-01-10 05:19:36,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:19:36,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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 449 [2022-01-10 05:19:36,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:19:36,472 INFO L225 Difference]: With dead ends: 3210 [2022-01-10 05:19:36,472 INFO L226 Difference]: Without dead ends: 2140 [2022-01-10 05:19:36,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 896 GetRequests, 893 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 05:19:36,474 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 113 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-01-10 05:19:36,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 248 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-01-10 05:19:36,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2022-01-10 05:19:36,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 2140. [2022-01-10 05:19:36,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2140 states, 2139 states have (on average 1.2463768115942029) internal successors, (2666), 2139 states have internal predecessors, (2666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:19:36,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 2666 transitions. [2022-01-10 05:19:36,504 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 2666 transitions. Word has length 449 [2022-01-10 05:19:36,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:19:36,505 INFO L470 AbstractCegarLoop]: Abstraction has 2140 states and 2666 transitions. [2022-01-10 05:19:36,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:19:36,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 2666 transitions. [2022-01-10 05:19:36,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2022-01-10 05:19:36,508 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:19:36,508 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:19:36,531 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 05:19:36,709 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 05:19:36,709 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:19:36,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:19:36,710 INFO L85 PathProgramCache]: Analyzing trace with hash 807747531, now seen corresponding path program 1 times [2022-01-10 05:19:36,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:19:36,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413702866] [2022-01-10 05:19:36,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:19:36,711 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:19:36,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:19:36,714 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 05:19:36,717 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 05:19:36,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:19:36,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 05:19:36,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:19:37,763 INFO L134 CoverageAnalysis]: Checked inductivity of 815 backedges. 0 proven. 683 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-01-10 05:19:37,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 05:19:42,048 INFO L134 CoverageAnalysis]: Checked inductivity of 815 backedges. 501 proven. 182 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-01-10 05:19:42,048 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:19:42,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413702866] [2022-01-10 05:19:42,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [413702866] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 05:19:42,049 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 05:19:42,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-01-10 05:19:42,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061499908] [2022-01-10 05:19:42,049 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 05:19:42,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 05:19:42,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:19:42,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 05:19:42,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-10 05:19:42,051 INFO L87 Difference]: Start difference. First operand 2140 states and 2666 transitions. Second operand has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:19:46,279 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []