/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/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:12:27,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:12:27,613 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:12:27,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:12:27,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:12:27,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:12:27,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:12:27,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:12:27,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:12:27,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:12:27,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:12:27,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:12:27,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:12:27,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:12:27,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:12:27,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:12:27,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:12:27,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:12:27,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:12:27,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:12:27,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:12:27,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:12:27,729 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:12:27,730 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:12:27,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 07:12:27,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:12:27,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:12:27,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:12:27,745 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 07:12:27,770 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:12:27,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:12:27,771 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:12:27,771 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:12:27,772 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:12:27,772 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:12:27,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:12:27,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:12:27,773 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:12:27,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:12:27,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:12:27,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:12:27,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:12:27,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:12:27,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:12:27,774 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:12:27,774 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:12:27,774 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:12:27,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:12:27,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:12:27,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:12:27,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:12:27,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:12:27,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:12:27,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:12:27,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:12:27,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:12:27,776 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:12:27,776 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:12:27,777 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:12:27,777 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:12:27,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:12:27,777 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:12:27,777 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:12:27,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:12:28,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:12:28,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:12:28,004 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:12:28,022 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:12:28,023 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2022-01-10 07:12:28,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01555205a/6d0bf50f3b544c349ecdcb695888861f/FLAG79bc1e83a [2022-01-10 07:12:28,487 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:12:28,487 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2022-01-10 07:12:28,499 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01555205a/6d0bf50f3b544c349ecdcb695888861f/FLAG79bc1e83a [2022-01-10 07:12:28,514 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01555205a/6d0bf50f3b544c349ecdcb695888861f [2022-01-10 07:12:28,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:12:28,516 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:12:28,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:12:28,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:12:28,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:12:28,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:12:28" (1/1) ... [2022-01-10 07:12:28,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@105d63c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:28, skipping insertion in model container [2022-01-10 07:12:28,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:12:28" (1/1) ... [2022-01-10 07:12:28,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:12:28,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:12:28,842 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[10021,10034] [2022-01-10 07:12:28,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:12:28,904 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:12:28,944 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[10021,10034] [2022-01-10 07:12:28,979 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:12:28,993 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:12:28,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:28 WrapperNode [2022-01-10 07:12:28,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:12:28,995 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:12:28,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:12:28,995 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:12:29,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:28" (1/1) ... [2022-01-10 07:12:29,018 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:28" (1/1) ... [2022-01-10 07:12:29,081 INFO L137 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 914 [2022-01-10 07:12:29,082 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:12:29,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:12:29,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:12:29,082 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:12:29,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:28" (1/1) ... [2022-01-10 07:12:29,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:28" (1/1) ... [2022-01-10 07:12:29,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:28" (1/1) ... [2022-01-10 07:12:29,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:28" (1/1) ... [2022-01-10 07:12:29,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:28" (1/1) ... [2022-01-10 07:12:29,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:28" (1/1) ... [2022-01-10 07:12:29,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:28" (1/1) ... [2022-01-10 07:12:29,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:12:29,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:12:29,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:12:29,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:12:29,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:28" (1/1) ... [2022-01-10 07:12:29,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:12:29,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:12:29,175 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 07:12:29,177 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 07:12:29,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:12:29,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:12:29,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:12:29,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:12:29,294 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:12:29,295 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:12:29,993 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:12:30,000 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:12:30,000 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 07:12:30,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:12:30 BoogieIcfgContainer [2022-01-10 07:12:30,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:12:30,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:12:30,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:12:30,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:12:30,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:12:28" (1/3) ... [2022-01-10 07:12:30,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2414da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:12:30, skipping insertion in model container [2022-01-10 07:12:30,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:28" (2/3) ... [2022-01-10 07:12:30,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2414da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:12:30, skipping insertion in model container [2022-01-10 07:12:30,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:12:30" (3/3) ... [2022-01-10 07:12:30,030 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2022-01-10 07:12:30,033 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:12:30,033 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 07:12:30,063 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:12:30,068 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 07:12:30,068 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 07:12:30,081 INFO L276 IsEmpty]: Start isEmpty. Operand has 250 states, 248 states have (on average 1.7258064516129032) internal successors, (428), 249 states have internal predecessors, (428), 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 07:12:30,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-10 07:12:30,088 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:30,088 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] [2022-01-10 07:12:30,089 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:30,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:30,092 INFO L85 PathProgramCache]: Analyzing trace with hash 680840216, now seen corresponding path program 1 times [2022-01-10 07:12:30,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:30,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2066741763] [2022-01-10 07:12:30,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:30,102 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:30,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:30,104 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 07:12:30,104 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 07:12:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:30,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:12:30,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:32,730 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 07:12:32,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:32,731 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:32,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2066741763] [2022-01-10 07:12:32,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2066741763] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:32,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:32,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:12:32,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951423786] [2022-01-10 07:12:32,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:32,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:12:32,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:32,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:12:32,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:12:32,754 INFO L87 Difference]: Start difference. First operand has 250 states, 248 states have (on average 1.7258064516129032) internal successors, (428), 249 states have internal predecessors, (428), 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 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 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 07:12:32,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:32,920 INFO L93 Difference]: Finished difference Result 546 states and 895 transitions. [2022-01-10 07:12:32,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:12:32,922 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 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 96 [2022-01-10 07:12:32,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:32,930 INFO L225 Difference]: With dead ends: 546 [2022-01-10 07:12:32,930 INFO L226 Difference]: Without dead ends: 371 [2022-01-10 07:12:32,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:12:32,935 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 356 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 161 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:32,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 1807 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 55 Invalid, 0 Unknown, 161 Unchecked, 0.1s Time] [2022-01-10 07:12:32,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-01-10 07:12:32,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 278. [2022-01-10 07:12:32,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 1.4368231046931408) internal successors, (398), 277 states have internal predecessors, (398), 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 07:12:32,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 398 transitions. [2022-01-10 07:12:32,972 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 398 transitions. Word has length 96 [2022-01-10 07:12:32,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:32,973 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 398 transitions. [2022-01-10 07:12:32,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 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 07:12:32,973 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 398 transitions. [2022-01-10 07:12:32,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 07:12:32,975 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:32,975 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] [2022-01-10 07:12:32,988 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 07:12:33,191 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 07:12:33,192 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:33,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:33,194 INFO L85 PathProgramCache]: Analyzing trace with hash 2135599906, now seen corresponding path program 1 times [2022-01-10 07:12:33,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:33,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717465429] [2022-01-10 07:12:33,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:33,195 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:33,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:33,196 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 07:12:33,198 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 07:12:33,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:33,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:12:33,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:33,714 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 07:12:33,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:33,715 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:33,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717465429] [2022-01-10 07:12:33,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [717465429] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:33,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:33,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:12:33,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206342795] [2022-01-10 07:12:33,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:33,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:12:33,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:33,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:12:33,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:12:33,717 INFO L87 Difference]: Start difference. First operand 278 states and 398 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 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 07:12:33,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:33,959 INFO L93 Difference]: Finished difference Result 462 states and 684 transitions. [2022-01-10 07:12:33,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:12:33,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 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 97 [2022-01-10 07:12:33,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:33,960 INFO L225 Difference]: With dead ends: 462 [2022-01-10 07:12:33,961 INFO L226 Difference]: Without dead ends: 284 [2022-01-10 07:12:33,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:12:33,963 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 37 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 145 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:33,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 889 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 250 Invalid, 0 Unknown, 145 Unchecked, 0.2s Time] [2022-01-10 07:12:33,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-01-10 07:12:33,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 282. [2022-01-10 07:12:33,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 1.4341637010676156) internal successors, (403), 281 states have internal predecessors, (403), 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 07:12:33,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 403 transitions. [2022-01-10 07:12:33,974 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 403 transitions. Word has length 97 [2022-01-10 07:12:33,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:33,974 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 403 transitions. [2022-01-10 07:12:33,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 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 07:12:33,974 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 403 transitions. [2022-01-10 07:12:33,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 07:12:33,976 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:33,976 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] [2022-01-10 07:12:33,987 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 07:12:34,179 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 07:12:34,180 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:34,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:34,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1867282611, now seen corresponding path program 1 times [2022-01-10 07:12:34,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:34,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250250111] [2022-01-10 07:12:34,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:34,181 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:34,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:34,182 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 07:12:34,185 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 07:12:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:34,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:12:34,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:34,637 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 07:12:34,637 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:34,638 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:34,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1250250111] [2022-01-10 07:12:34,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1250250111] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:34,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:34,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:12:34,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74980400] [2022-01-10 07:12:34,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:34,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:12:34,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:34,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:12:34,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:12:34,639 INFO L87 Difference]: Start difference. First operand 282 states and 403 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 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 07:12:34,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:34,753 INFO L93 Difference]: Finished difference Result 458 states and 679 transitions. [2022-01-10 07:12:34,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:12:34,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 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 97 [2022-01-10 07:12:34,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:34,754 INFO L225 Difference]: With dead ends: 458 [2022-01-10 07:12:34,754 INFO L226 Difference]: Without dead ends: 290 [2022-01-10 07:12:34,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:12:34,755 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 54 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 145 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:34,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 738 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 117 Invalid, 0 Unknown, 145 Unchecked, 0.1s Time] [2022-01-10 07:12:34,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-01-10 07:12:34,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 287. [2022-01-10 07:12:34,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.4335664335664335) internal successors, (410), 286 states have internal predecessors, (410), 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 07:12:34,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 410 transitions. [2022-01-10 07:12:34,763 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 410 transitions. Word has length 97 [2022-01-10 07:12:34,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:34,764 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 410 transitions. [2022-01-10 07:12:34,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 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 07:12:34,764 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 410 transitions. [2022-01-10 07:12:34,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 07:12:34,765 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:34,766 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] [2022-01-10 07:12:34,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-01-10 07:12:34,991 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 07:12:34,991 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:34,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:34,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1064016619, now seen corresponding path program 1 times [2022-01-10 07:12:34,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:34,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1114051256] [2022-01-10 07:12:34,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:34,993 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:34,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:34,994 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 07:12:34,997 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 07:12:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:35,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:12:35,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:35,545 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 07:12:35,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:35,546 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:35,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1114051256] [2022-01-10 07:12:35,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1114051256] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:35,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:35,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:12:35,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288891993] [2022-01-10 07:12:35,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:35,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:12:35,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:35,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:12:35,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:12:35,547 INFO L87 Difference]: Start difference. First operand 287 states and 410 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 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 07:12:35,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:35,655 INFO L93 Difference]: Finished difference Result 449 states and 667 transitions. [2022-01-10 07:12:35,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:12:35,655 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 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 97 [2022-01-10 07:12:35,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:35,657 INFO L225 Difference]: With dead ends: 449 [2022-01-10 07:12:35,657 INFO L226 Difference]: Without dead ends: 301 [2022-01-10 07:12:35,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:12:35,658 INFO L933 BasicCegarLoop]: 329 mSDtfsCounter, 58 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:35,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 585 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 31 Unchecked, 0.1s Time] [2022-01-10 07:12:35,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-01-10 07:12:35,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 296. [2022-01-10 07:12:35,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 1.4305084745762713) internal successors, (422), 295 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 07:12:35,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 422 transitions. [2022-01-10 07:12:35,677 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 422 transitions. Word has length 97 [2022-01-10 07:12:35,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:35,678 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 422 transitions. [2022-01-10 07:12:35,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 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 07:12:35,678 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 422 transitions. [2022-01-10 07:12:35,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 07:12:35,681 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:35,681 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] [2022-01-10 07:12:35,688 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 07:12:35,888 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 07:12:35,889 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:35,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:35,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1552380924, now seen corresponding path program 1 times [2022-01-10 07:12:35,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:35,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141103186] [2022-01-10 07:12:35,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:35,892 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:35,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:35,893 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 07:12:35,894 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 07:12:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:36,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:12:36,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:36,406 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 07:12:36,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:36,406 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:36,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141103186] [2022-01-10 07:12:36,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141103186] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:36,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:36,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:12:36,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209311737] [2022-01-10 07:12:36,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:36,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:12:36,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:36,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:12:36,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:12:36,408 INFO L87 Difference]: Start difference. First operand 296 states and 422 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 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 07:12:36,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:36,575 INFO L93 Difference]: Finished difference Result 458 states and 678 transitions. [2022-01-10 07:12:36,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:12:36,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 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 97 [2022-01-10 07:12:36,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:36,577 INFO L225 Difference]: With dead ends: 458 [2022-01-10 07:12:36,577 INFO L226 Difference]: Without dead ends: 300 [2022-01-10 07:12:36,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:12:36,579 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 51 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:36,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 724 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 234 Invalid, 0 Unknown, 28 Unchecked, 0.1s Time] [2022-01-10 07:12:36,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-01-10 07:12:36,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 297. [2022-01-10 07:12:36,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.429054054054054) internal successors, (423), 296 states have internal predecessors, (423), 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 07:12:36,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 423 transitions. [2022-01-10 07:12:36,588 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 423 transitions. Word has length 97 [2022-01-10 07:12:36,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:36,589 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 423 transitions. [2022-01-10 07:12:36,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 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 07:12:36,589 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 423 transitions. [2022-01-10 07:12:36,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 07:12:36,590 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:36,590 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] [2022-01-10 07:12:36,600 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 07:12:36,797 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 07:12:36,798 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:36,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:36,798 INFO L85 PathProgramCache]: Analyzing trace with hash 347972433, now seen corresponding path program 1 times [2022-01-10 07:12:36,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:36,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508548148] [2022-01-10 07:12:36,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:36,799 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:36,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:36,800 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 07:12:36,812 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 07:12:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:36,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:12:36,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:37,320 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 07:12:37,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:37,320 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:37,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508548148] [2022-01-10 07:12:37,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508548148] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:37,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:37,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:12:37,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821294560] [2022-01-10 07:12:37,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:37,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:12:37,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:37,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:12:37,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:12:37,322 INFO L87 Difference]: Start difference. First operand 297 states and 423 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 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 07:12:37,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:37,434 INFO L93 Difference]: Finished difference Result 486 states and 715 transitions. [2022-01-10 07:12:37,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:12:37,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 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 97 [2022-01-10 07:12:37,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:37,436 INFO L225 Difference]: With dead ends: 486 [2022-01-10 07:12:37,436 INFO L226 Difference]: Without dead ends: 298 [2022-01-10 07:12:37,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:12:37,437 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 58 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 145 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:37,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 723 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 145 Unchecked, 0.1s Time] [2022-01-10 07:12:37,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-01-10 07:12:37,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2022-01-10 07:12:37,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 1.4276094276094276) internal successors, (424), 297 states have internal predecessors, (424), 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 07:12:37,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 424 transitions. [2022-01-10 07:12:37,444 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 424 transitions. Word has length 97 [2022-01-10 07:12:37,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:37,444 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 424 transitions. [2022-01-10 07:12:37,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 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 07:12:37,444 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 424 transitions. [2022-01-10 07:12:37,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 07:12:37,445 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:37,445 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] [2022-01-10 07:12:37,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-01-10 07:12:37,646 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 07:12:37,646 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:37,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:37,646 INFO L85 PathProgramCache]: Analyzing trace with hash -928891214, now seen corresponding path program 1 times [2022-01-10 07:12:37,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:37,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668575667] [2022-01-10 07:12:37,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:37,647 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:37,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:37,649 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 07:12:37,650 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 07:12:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:37,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:12:37,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:38,129 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 07:12:38,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:38,129 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:38,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668575667] [2022-01-10 07:12:38,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668575667] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:38,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:38,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:12:38,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945194915] [2022-01-10 07:12:38,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:38,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:12:38,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:38,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:12:38,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:12:38,131 INFO L87 Difference]: Start difference. First operand 298 states and 424 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 07:12:38,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:38,256 INFO L93 Difference]: Finished difference Result 496 states and 728 transitions. [2022-01-10 07:12:38,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:12:38,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 98 [2022-01-10 07:12:38,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:38,258 INFO L225 Difference]: With dead ends: 496 [2022-01-10 07:12:38,258 INFO L226 Difference]: Without dead ends: 298 [2022-01-10 07:12:38,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:12:38,259 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 64 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:38,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 546 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 127 Invalid, 0 Unknown, 11 Unchecked, 0.1s Time] [2022-01-10 07:12:38,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-01-10 07:12:38,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2022-01-10 07:12:38,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 1.4242424242424243) internal successors, (423), 297 states have internal predecessors, (423), 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 07:12:38,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 423 transitions. [2022-01-10 07:12:38,267 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 423 transitions. Word has length 98 [2022-01-10 07:12:38,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:38,267 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 423 transitions. [2022-01-10 07:12:38,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 07:12:38,267 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 423 transitions. [2022-01-10 07:12:38,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 07:12:38,268 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:38,268 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] [2022-01-10 07:12:38,278 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 07:12:38,475 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 07:12:38,476 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:38,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:38,477 INFO L85 PathProgramCache]: Analyzing trace with hash 122099460, now seen corresponding path program 1 times [2022-01-10 07:12:38,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:38,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [391811864] [2022-01-10 07:12:38,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:38,477 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:38,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:38,478 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 07:12:38,480 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 07:12:38,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:38,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:12:38,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:39,541 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 07:12:39,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:39,541 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:39,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [391811864] [2022-01-10 07:12:39,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [391811864] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:39,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:39,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:12:39,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795307063] [2022-01-10 07:12:39,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:39,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:12:39,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:39,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:12:39,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:12:39,543 INFO L87 Difference]: Start difference. First operand 298 states and 423 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 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 07:12:39,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:39,695 INFO L93 Difference]: Finished difference Result 453 states and 664 transitions. [2022-01-10 07:12:39,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:12:39,696 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 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 98 [2022-01-10 07:12:39,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:39,697 INFO L225 Difference]: With dead ends: 453 [2022-01-10 07:12:39,697 INFO L226 Difference]: Without dead ends: 334 [2022-01-10 07:12:39,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:12:39,698 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 69 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 264 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:39,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 1310 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 208 Invalid, 0 Unknown, 264 Unchecked, 0.1s Time] [2022-01-10 07:12:39,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-01-10 07:12:39,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 328. [2022-01-10 07:12:39,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 1.4128440366972477) internal successors, (462), 327 states have internal predecessors, (462), 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 07:12:39,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 462 transitions. [2022-01-10 07:12:39,705 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 462 transitions. Word has length 98 [2022-01-10 07:12:39,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:39,705 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 462 transitions. [2022-01-10 07:12:39,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 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 07:12:39,705 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 462 transitions. [2022-01-10 07:12:39,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 07:12:39,706 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:39,706 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] [2022-01-10 07:12:39,719 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 07:12:39,913 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 07:12:39,913 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:39,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:39,914 INFO L85 PathProgramCache]: Analyzing trace with hash 204504868, now seen corresponding path program 1 times [2022-01-10 07:12:39,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:39,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [337962237] [2022-01-10 07:12:39,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:39,914 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:39,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:39,916 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 07:12:39,917 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 07:12:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:40,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:12:40,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:40,814 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 07:12:40,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:40,814 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:40,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [337962237] [2022-01-10 07:12:40,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [337962237] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:40,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:40,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:12:40,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727856409] [2022-01-10 07:12:40,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:40,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:12:40,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:40,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:12:40,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:12:40,815 INFO L87 Difference]: Start difference. First operand 328 states and 462 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 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 07:12:40,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:40,966 INFO L93 Difference]: Finished difference Result 483 states and 697 transitions. [2022-01-10 07:12:40,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:12:40,966 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 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 98 [2022-01-10 07:12:40,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:40,968 INFO L225 Difference]: With dead ends: 483 [2022-01-10 07:12:40,968 INFO L226 Difference]: Without dead ends: 370 [2022-01-10 07:12:40,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:12:40,969 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 85 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 375 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:40,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 1212 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 113 Invalid, 0 Unknown, 375 Unchecked, 0.1s Time] [2022-01-10 07:12:40,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-01-10 07:12:40,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 369. [2022-01-10 07:12:40,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 1.3994565217391304) internal successors, (515), 368 states have internal predecessors, (515), 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 07:12:40,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 515 transitions. [2022-01-10 07:12:40,979 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 515 transitions. Word has length 98 [2022-01-10 07:12:40,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:40,979 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 515 transitions. [2022-01-10 07:12:40,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 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 07:12:40,980 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 515 transitions. [2022-01-10 07:12:40,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 07:12:40,980 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:40,980 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] [2022-01-10 07:12:40,988 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 07:12:41,187 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 07:12:41,188 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:41,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:41,188 INFO L85 PathProgramCache]: Analyzing trace with hash 888043364, now seen corresponding path program 1 times [2022-01-10 07:12:41,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:41,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1791004926] [2022-01-10 07:12:41,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:41,190 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:41,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:41,206 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 07:12:41,208 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 07:12:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:41,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:12:41,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:41,831 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 07:12:41,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:41,832 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:41,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1791004926] [2022-01-10 07:12:41,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1791004926] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:41,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:41,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:12:41,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357482430] [2022-01-10 07:12:41,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:41,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:12:41,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:41,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:12:41,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:12:41,833 INFO L87 Difference]: Start difference. First operand 369 states and 515 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 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 07:12:41,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:41,954 INFO L93 Difference]: Finished difference Result 518 states and 750 transitions. [2022-01-10 07:12:41,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:12:41,954 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 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 98 [2022-01-10 07:12:41,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:41,955 INFO L225 Difference]: With dead ends: 518 [2022-01-10 07:12:41,955 INFO L226 Difference]: Without dead ends: 381 [2022-01-10 07:12:41,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:12:41,956 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 55 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 157 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:41,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 1153 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 117 Invalid, 0 Unknown, 157 Unchecked, 0.1s Time] [2022-01-10 07:12:41,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-01-10 07:12:41,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 378. [2022-01-10 07:12:41,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 1.389920424403183) internal successors, (524), 377 states have internal predecessors, (524), 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 07:12:41,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 524 transitions. [2022-01-10 07:12:41,963 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 524 transitions. Word has length 98 [2022-01-10 07:12:41,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:41,964 INFO L470 AbstractCegarLoop]: Abstraction has 378 states and 524 transitions. [2022-01-10 07:12:41,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 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 07:12:41,964 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 524 transitions. [2022-01-10 07:12:41,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 07:12:41,964 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:41,964 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] [2022-01-10 07:12:41,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 07:12:42,171 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 07:12:42,172 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:42,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:42,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1632788668, now seen corresponding path program 1 times [2022-01-10 07:12:42,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:42,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [7354727] [2022-01-10 07:12:42,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:42,173 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:42,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:42,174 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 07:12:42,175 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 07:12:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:42,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:12:42,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:43,017 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 07:12:43,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:43,018 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:43,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [7354727] [2022-01-10 07:12:43,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [7354727] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:43,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:43,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:12:43,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487098754] [2022-01-10 07:12:43,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:43,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:12:43,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:43,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:12:43,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:12:43,019 INFO L87 Difference]: Start difference. First operand 378 states and 524 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 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 07:12:43,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:43,123 INFO L93 Difference]: Finished difference Result 548 states and 792 transitions. [2022-01-10 07:12:43,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:12:43,124 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 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 98 [2022-01-10 07:12:43,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:43,125 INFO L225 Difference]: With dead ends: 548 [2022-01-10 07:12:43,125 INFO L226 Difference]: Without dead ends: 436 [2022-01-10 07:12:43,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:12:43,126 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 184 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 323 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:43,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 1221 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 323 Unchecked, 0.1s Time] [2022-01-10 07:12:43,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-01-10 07:12:43,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 428. [2022-01-10 07:12:43,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 1.4028103044496487) internal successors, (599), 427 states have internal predecessors, (599), 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 07:12:43,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 599 transitions. [2022-01-10 07:12:43,134 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 599 transitions. Word has length 98 [2022-01-10 07:12:43,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:43,134 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 599 transitions. [2022-01-10 07:12:43,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 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 07:12:43,134 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 599 transitions. [2022-01-10 07:12:43,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 07:12:43,135 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:43,135 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] [2022-01-10 07:12:43,144 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-01-10 07:12:43,335 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 07:12:43,336 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:43,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:43,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1681824028, now seen corresponding path program 1 times [2022-01-10 07:12:43,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:43,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [761057665] [2022-01-10 07:12:43,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:43,337 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:43,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:43,338 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 07:12:43,352 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 07:12:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:43,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:12:43,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:44,238 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 07:12:44,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:44,238 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:44,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [761057665] [2022-01-10 07:12:44,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [761057665] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:44,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:44,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:12:44,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480882423] [2022-01-10 07:12:44,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:44,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:12:44,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:44,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:12:44,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:12:44,240 INFO L87 Difference]: Start difference. First operand 428 states and 599 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 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 07:12:44,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:44,363 INFO L93 Difference]: Finished difference Result 592 states and 856 transitions. [2022-01-10 07:12:44,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:12:44,364 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 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 98 [2022-01-10 07:12:44,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:44,365 INFO L225 Difference]: With dead ends: 592 [2022-01-10 07:12:44,366 INFO L226 Difference]: Without dead ends: 467 [2022-01-10 07:12:44,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:12:44,366 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 81 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 568 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:44,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 1547 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 568 Unchecked, 0.1s Time] [2022-01-10 07:12:44,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-01-10 07:12:44,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 459. [2022-01-10 07:12:44,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 458 states have (on average 1.3973799126637554) internal successors, (640), 458 states have internal predecessors, (640), 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 07:12:44,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 640 transitions. [2022-01-10 07:12:44,378 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 640 transitions. Word has length 98 [2022-01-10 07:12:44,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:44,378 INFO L470 AbstractCegarLoop]: Abstraction has 459 states and 640 transitions. [2022-01-10 07:12:44,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 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 07:12:44,378 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 640 transitions. [2022-01-10 07:12:44,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 07:12:44,379 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:44,380 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] [2022-01-10 07:12:44,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-01-10 07:12:44,588 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 07:12:44,588 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:44,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:44,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1780006802, now seen corresponding path program 1 times [2022-01-10 07:12:44,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:44,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1465191845] [2022-01-10 07:12:44,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:44,590 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:44,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:44,591 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 07:12:44,593 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 07:12:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:44,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:12:44,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:45,311 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 07:12:45,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:45,312 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:45,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1465191845] [2022-01-10 07:12:45,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1465191845] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:45,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:45,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:12:45,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361295813] [2022-01-10 07:12:45,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:45,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:12:45,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:45,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:12:45,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:12:45,313 INFO L87 Difference]: Start difference. First operand 459 states and 640 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 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 07:12:45,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:45,457 INFO L93 Difference]: Finished difference Result 778 states and 1139 transitions. [2022-01-10 07:12:45,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:12:45,457 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 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 99 [2022-01-10 07:12:45,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:45,459 INFO L225 Difference]: With dead ends: 778 [2022-01-10 07:12:45,459 INFO L226 Difference]: Without dead ends: 647 [2022-01-10 07:12:45,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:12:45,461 INFO L933 BasicCegarLoop]: 518 mSDtfsCounter, 411 mSDsluCounter, 1568 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 2086 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1047 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:45,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 2086 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 1047 Unchecked, 0.1s Time] [2022-01-10 07:12:45,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2022-01-10 07:12:45,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 513. [2022-01-10 07:12:45,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 512 states have (on average 1.39453125) internal successors, (714), 512 states have internal predecessors, (714), 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 07:12:45,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 714 transitions. [2022-01-10 07:12:45,476 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 714 transitions. Word has length 99 [2022-01-10 07:12:45,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:45,476 INFO L470 AbstractCegarLoop]: Abstraction has 513 states and 714 transitions. [2022-01-10 07:12:45,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 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 07:12:45,476 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 714 transitions. [2022-01-10 07:12:45,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 07:12:45,477 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:45,477 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] [2022-01-10 07:12:45,499 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-01-10 07:12:45,684 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 07:12:45,685 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:45,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:45,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1726188359, now seen corresponding path program 1 times [2022-01-10 07:12:45,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:45,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143768957] [2022-01-10 07:12:45,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:45,686 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:45,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:45,687 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 07:12:45,688 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 07:12:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:45,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:12:45,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:46,023 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 07:12:46,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:46,023 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:46,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143768957] [2022-01-10 07:12:46,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143768957] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:46,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:46,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:12:46,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316853028] [2022-01-10 07:12:46,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:46,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:12:46,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:46,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:12:46,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:12:46,024 INFO L87 Difference]: Start difference. First operand 513 states and 714 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 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 07:12:46,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:46,129 INFO L93 Difference]: Finished difference Result 683 states and 980 transitions. [2022-01-10 07:12:46,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:12:46,130 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 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 99 [2022-01-10 07:12:46,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:46,131 INFO L225 Difference]: With dead ends: 683 [2022-01-10 07:12:46,131 INFO L226 Difference]: Without dead ends: 515 [2022-01-10 07:12:46,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:12:46,132 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 62 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:46,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 568 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 117 Invalid, 0 Unknown, 23 Unchecked, 0.1s Time] [2022-01-10 07:12:46,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2022-01-10 07:12:46,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 514. [2022-01-10 07:12:46,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 513 states have (on average 1.3937621832358675) internal successors, (715), 513 states have internal predecessors, (715), 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 07:12:46,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 715 transitions. [2022-01-10 07:12:46,144 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 715 transitions. Word has length 99 [2022-01-10 07:12:46,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:46,144 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 715 transitions. [2022-01-10 07:12:46,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 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 07:12:46,144 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 715 transitions. [2022-01-10 07:12:46,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 07:12:46,145 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:46,145 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] [2022-01-10 07:12:46,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 07:12:46,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:12:46,352 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:46,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:46,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1205110871, now seen corresponding path program 1 times [2022-01-10 07:12:46,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:46,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1794524854] [2022-01-10 07:12:46,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:46,353 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:46,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:46,354 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:12:46,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 07:12:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:46,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:12:46,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:46,803 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 07:12:46,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:46,803 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:46,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1794524854] [2022-01-10 07:12:46,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1794524854] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:46,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:46,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:12:46,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928102048] [2022-01-10 07:12:46,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:46,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:12:46,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:46,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:12:46,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:12:46,804 INFO L87 Difference]: Start difference. First operand 514 states and 715 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 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 07:12:46,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:46,902 INFO L93 Difference]: Finished difference Result 669 states and 963 transitions. [2022-01-10 07:12:46,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:12:46,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 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 99 [2022-01-10 07:12:46,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:46,904 INFO L225 Difference]: With dead ends: 669 [2022-01-10 07:12:46,904 INFO L226 Difference]: Without dead ends: 521 [2022-01-10 07:12:46,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:12:46,905 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 62 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:46,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 583 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 32 Unchecked, 0.1s Time] [2022-01-10 07:12:46,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-01-10 07:12:46,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 515. [2022-01-10 07:12:46,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 514 states have (on average 1.3929961089494163) internal successors, (716), 514 states have internal predecessors, (716), 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 07:12:46,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 716 transitions. [2022-01-10 07:12:46,915 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 716 transitions. Word has length 99 [2022-01-10 07:12:46,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:46,915 INFO L470 AbstractCegarLoop]: Abstraction has 515 states and 716 transitions. [2022-01-10 07:12:46,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 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 07:12:46,916 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 716 transitions. [2022-01-10 07:12:46,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 07:12:46,916 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:46,916 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] [2022-01-10 07:12:46,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 07:12:47,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:12:47,124 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:47,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:47,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1040650405, now seen corresponding path program 1 times [2022-01-10 07:12:47,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:47,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453486920] [2022-01-10 07:12:47,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:47,125 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:47,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:47,141 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:12:47,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 07:12:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:47,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:12:47,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:47,434 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 07:12:47,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:47,434 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:47,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453486920] [2022-01-10 07:12:47,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453486920] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:47,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:47,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:12:47,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985042977] [2022-01-10 07:12:47,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:47,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:12:47,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:47,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:12:47,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:12:47,436 INFO L87 Difference]: Start difference. First operand 515 states and 716 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 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 07:12:47,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:47,783 INFO L93 Difference]: Finished difference Result 1110 states and 1646 transitions. [2022-01-10 07:12:47,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:12:47,783 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 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 99 [2022-01-10 07:12:47,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:47,787 INFO L225 Difference]: With dead ends: 1110 [2022-01-10 07:12:47,787 INFO L226 Difference]: Without dead ends: 933 [2022-01-10 07:12:47,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:12:47,788 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 1758 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1758 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:47,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1758 Valid, 627 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:12:47,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2022-01-10 07:12:47,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 543. [2022-01-10 07:12:47,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 542 states have (on average 1.3653136531365313) internal successors, (740), 542 states have internal predecessors, (740), 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 07:12:47,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 740 transitions. [2022-01-10 07:12:47,831 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 740 transitions. Word has length 99 [2022-01-10 07:12:47,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:47,832 INFO L470 AbstractCegarLoop]: Abstraction has 543 states and 740 transitions. [2022-01-10 07:12:47,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 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 07:12:47,832 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 740 transitions. [2022-01-10 07:12:47,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 07:12:47,833 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:47,833 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] [2022-01-10 07:12:47,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 07:12:48,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:12:48,040 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:48,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:48,041 INFO L85 PathProgramCache]: Analyzing trace with hash 675873567, now seen corresponding path program 1 times [2022-01-10 07:12:48,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:48,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313556806] [2022-01-10 07:12:48,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:48,042 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:48,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:48,043 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:12:48,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 07:12:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:48,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:12:48,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:48,383 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 07:12:48,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:48,383 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:48,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313556806] [2022-01-10 07:12:48,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1313556806] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:48,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:48,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:12:48,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055417982] [2022-01-10 07:12:48,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:48,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:12:48,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:48,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:12:48,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:12:48,384 INFO L87 Difference]: Start difference. First operand 543 states and 740 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 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 07:12:48,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:48,811 INFO L93 Difference]: Finished difference Result 1462 states and 2170 transitions. [2022-01-10 07:12:48,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:12:48,811 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 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 99 [2022-01-10 07:12:48,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:48,815 INFO L225 Difference]: With dead ends: 1462 [2022-01-10 07:12:48,815 INFO L226 Difference]: Without dead ends: 1303 [2022-01-10 07:12:48,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:12:48,816 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 2602 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2602 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:48,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2602 Valid, 757 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:12:48,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2022-01-10 07:12:48,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 596. [2022-01-10 07:12:48,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 595 states have (on average 1.3495798319327732) internal successors, (803), 595 states have internal predecessors, (803), 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 07:12:48,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 803 transitions. [2022-01-10 07:12:48,834 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 803 transitions. Word has length 99 [2022-01-10 07:12:48,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:48,834 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 803 transitions. [2022-01-10 07:12:48,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 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 07:12:48,834 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 803 transitions. [2022-01-10 07:12:48,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 07:12:48,835 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:48,835 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] [2022-01-10 07:12:48,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 07:12:49,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:12:49,043 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:49,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:49,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1076716021, now seen corresponding path program 1 times [2022-01-10 07:12:49,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:49,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788391156] [2022-01-10 07:12:49,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:49,044 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:49,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:49,045 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:12:49,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 07:12:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:49,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:12:49,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:50,378 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 07:12:50,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:50,378 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:50,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [788391156] [2022-01-10 07:12:50,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [788391156] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:50,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:50,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:12:50,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599076603] [2022-01-10 07:12:50,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:50,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:12:50,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:50,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:12:50,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:12:50,379 INFO L87 Difference]: Start difference. First operand 596 states and 803 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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 07:12:50,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:50,568 INFO L93 Difference]: Finished difference Result 1506 states and 2222 transitions. [2022-01-10 07:12:50,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:12:50,569 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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 99 [2022-01-10 07:12:50,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:50,573 INFO L225 Difference]: With dead ends: 1506 [2022-01-10 07:12:50,573 INFO L226 Difference]: Without dead ends: 1394 [2022-01-10 07:12:50,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:12:50,574 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 1466 mSDsluCounter, 1822 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 2168 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:50,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1466 Valid, 2168 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:12:50,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2022-01-10 07:12:50,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 762. [2022-01-10 07:12:50,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 761 states have (on average 1.392904073587385) internal successors, (1060), 761 states have internal predecessors, (1060), 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 07:12:50,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1060 transitions. [2022-01-10 07:12:50,602 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1060 transitions. Word has length 99 [2022-01-10 07:12:50,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:50,602 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 1060 transitions. [2022-01-10 07:12:50,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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 07:12:50,603 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1060 transitions. [2022-01-10 07:12:50,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 07:12:50,604 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:50,604 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] [2022-01-10 07:12:50,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-01-10 07:12:50,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:12:50,811 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:50,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:50,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1306683252, now seen corresponding path program 1 times [2022-01-10 07:12:50,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:50,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [236883796] [2022-01-10 07:12:50,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:50,812 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:50,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:50,813 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:12:50,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 07:12:50,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:50,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:12:50,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:51,079 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 07:12:51,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:51,080 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:51,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [236883796] [2022-01-10 07:12:51,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [236883796] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:51,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:51,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:12:51,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298769906] [2022-01-10 07:12:51,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:51,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:12:51,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:51,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:12:51,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:12:51,081 INFO L87 Difference]: Start difference. First operand 762 states and 1060 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 07:12:51,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:51,160 INFO L93 Difference]: Finished difference Result 988 states and 1411 transitions. [2022-01-10 07:12:51,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:12:51,160 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 100 [2022-01-10 07:12:51,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:51,163 INFO L225 Difference]: With dead ends: 988 [2022-01-10 07:12:51,163 INFO L226 Difference]: Without dead ends: 986 [2022-01-10 07:12:51,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 98 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 07:12:51,164 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 338 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:51,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [338 Valid, 1076 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:12:51,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2022-01-10 07:12:51,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 766. [2022-01-10 07:12:51,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 765 states have (on average 1.3908496732026143) internal successors, (1064), 765 states have internal predecessors, (1064), 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 07:12:51,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1064 transitions. [2022-01-10 07:12:51,204 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1064 transitions. Word has length 100 [2022-01-10 07:12:51,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:51,204 INFO L470 AbstractCegarLoop]: Abstraction has 766 states and 1064 transitions. [2022-01-10 07:12:51,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 07:12:51,205 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1064 transitions. [2022-01-10 07:12:51,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:12:51,206 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:51,206 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] [2022-01-10 07:12:51,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 07:12:51,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:12:51,415 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:51,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:51,416 INFO L85 PathProgramCache]: Analyzing trace with hash -729942331, now seen corresponding path program 1 times [2022-01-10 07:12:51,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:51,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1562474540] [2022-01-10 07:12:51,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:51,416 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:51,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:51,417 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:12:51,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 07:12:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:51,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:12:51,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:51,656 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 07:12:51,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:51,656 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:51,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1562474540] [2022-01-10 07:12:51,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1562474540] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:51,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:51,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:12:51,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829871088] [2022-01-10 07:12:51,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:51,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:12:51,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:51,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:12:51,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:12:51,658 INFO L87 Difference]: Start difference. First operand 766 states and 1064 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 07:12:51,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:51,712 INFO L93 Difference]: Finished difference Result 1403 states and 2023 transitions. [2022-01-10 07:12:51,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:12:51,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 101 [2022-01-10 07:12:51,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:51,715 INFO L225 Difference]: With dead ends: 1403 [2022-01-10 07:12:51,715 INFO L226 Difference]: Without dead ends: 1135 [2022-01-10 07:12:51,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 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 07:12:51,717 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 222 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:51,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 685 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:12:51,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2022-01-10 07:12:51,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 1133. [2022-01-10 07:12:51,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 1132 states have (on average 1.4090106007067138) internal successors, (1595), 1132 states have internal predecessors, (1595), 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 07:12:51,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1595 transitions. [2022-01-10 07:12:51,794 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1595 transitions. Word has length 101 [2022-01-10 07:12:51,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:51,794 INFO L470 AbstractCegarLoop]: Abstraction has 1133 states and 1595 transitions. [2022-01-10 07:12:51,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 07:12:51,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1595 transitions. [2022-01-10 07:12:51,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:12:51,795 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:51,795 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] [2022-01-10 07:12:51,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 07:12:52,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:12:52,003 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:52,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:52,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1526355632, now seen corresponding path program 1 times [2022-01-10 07:12:52,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:52,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2098244755] [2022-01-10 07:12:52,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:52,005 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:52,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:52,006 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:12:52,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 07:12:52,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:52,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:12:52,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:52,390 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 07:12:52,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:52,391 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:52,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2098244755] [2022-01-10 07:12:52,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2098244755] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:52,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:52,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:12:52,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882884442] [2022-01-10 07:12:52,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:52,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:12:52,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:52,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:12:52,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:12:52,392 INFO L87 Difference]: Start difference. First operand 1133 states and 1595 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 07:12:52,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:52,462 INFO L93 Difference]: Finished difference Result 1802 states and 2625 transitions. [2022-01-10 07:12:52,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:12:52,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 101 [2022-01-10 07:12:52,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:52,465 INFO L225 Difference]: With dead ends: 1802 [2022-01-10 07:12:52,466 INFO L226 Difference]: Without dead ends: 1374 [2022-01-10 07:12:52,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:12:52,467 INFO L933 BasicCegarLoop]: 477 mSDtfsCounter, 241 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:52,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 1121 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 10 Unchecked, 0.0s Time] [2022-01-10 07:12:52,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2022-01-10 07:12:52,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1372. [2022-01-10 07:12:52,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1372 states, 1371 states have (on average 1.4288840262582057) internal successors, (1959), 1371 states have internal predecessors, (1959), 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 07:12:52,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 1959 transitions. [2022-01-10 07:12:52,531 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 1959 transitions. Word has length 101 [2022-01-10 07:12:52,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:52,531 INFO L470 AbstractCegarLoop]: Abstraction has 1372 states and 1959 transitions. [2022-01-10 07:12:52,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 07:12:52,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 1959 transitions. [2022-01-10 07:12:52,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:12:52,532 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:52,533 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] [2022-01-10 07:12:52,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 07:12:52,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:12:52,740 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:52,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:52,740 INFO L85 PathProgramCache]: Analyzing trace with hash -701746876, now seen corresponding path program 1 times [2022-01-10 07:12:52,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:52,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348219995] [2022-01-10 07:12:52,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:52,741 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:52,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:52,742 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:12:52,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 07:12:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:52,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:12:52,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:53,037 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 07:12:53,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:53,037 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:53,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348219995] [2022-01-10 07:12:53,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1348219995] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:53,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:53,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:12:53,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684936912] [2022-01-10 07:12:53,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:53,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:12:53,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:53,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:12:53,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:12:53,041 INFO L87 Difference]: Start difference. First operand 1372 states and 1959 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 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 07:12:53,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:53,712 INFO L93 Difference]: Finished difference Result 5882 states and 8826 transitions. [2022-01-10 07:12:53,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:12:53,713 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 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 101 [2022-01-10 07:12:53,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:53,725 INFO L225 Difference]: With dead ends: 5882 [2022-01-10 07:12:53,725 INFO L226 Difference]: Without dead ends: 5121 [2022-01-10 07:12:53,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:12:53,728 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 2921 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2921 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:53,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2921 Valid, 736 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:12:53,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5121 states. [2022-01-10 07:12:53,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5121 to 1608. [2022-01-10 07:12:53,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1608 states, 1607 states have (on average 1.4001244555071561) internal successors, (2250), 1607 states have internal predecessors, (2250), 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 07:12:53,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 2250 transitions. [2022-01-10 07:12:53,831 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 2250 transitions. Word has length 101 [2022-01-10 07:12:53,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:53,831 INFO L470 AbstractCegarLoop]: Abstraction has 1608 states and 2250 transitions. [2022-01-10 07:12:53,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 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 07:12:53,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 2250 transitions. [2022-01-10 07:12:53,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:12:53,833 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:53,833 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] [2022-01-10 07:12:53,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 07:12:54,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:12:54,047 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:54,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:54,048 INFO L85 PathProgramCache]: Analyzing trace with hash 792119876, now seen corresponding path program 1 times [2022-01-10 07:12:54,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:54,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1764745712] [2022-01-10 07:12:54,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:54,048 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:54,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:54,049 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:12:54,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 07:12:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:54,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:12:54,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:54,284 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 07:12:54,284 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:54,284 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:54,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1764745712] [2022-01-10 07:12:54,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1764745712] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:54,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:54,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:12:54,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420220313] [2022-01-10 07:12:54,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:54,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:12:54,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:54,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:12:54,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:12:54,285 INFO L87 Difference]: Start difference. First operand 1608 states and 2250 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 07:12:54,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:54,427 INFO L93 Difference]: Finished difference Result 3362 states and 4812 transitions. [2022-01-10 07:12:54,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:12:54,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 101 [2022-01-10 07:12:54,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:54,433 INFO L225 Difference]: With dead ends: 3362 [2022-01-10 07:12:54,433 INFO L226 Difference]: Without dead ends: 2683 [2022-01-10 07:12:54,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 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 07:12:54,434 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 207 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:54,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 697 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:12:54,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2022-01-10 07:12:54,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 2681. [2022-01-10 07:12:54,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2681 states, 2680 states have (on average 1.403731343283582) internal successors, (3762), 2680 states have internal predecessors, (3762), 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 07:12:54,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2681 states to 2681 states and 3762 transitions. [2022-01-10 07:12:54,599 INFO L78 Accepts]: Start accepts. Automaton has 2681 states and 3762 transitions. Word has length 101 [2022-01-10 07:12:54,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:54,599 INFO L470 AbstractCegarLoop]: Abstraction has 2681 states and 3762 transitions. [2022-01-10 07:12:54,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 07:12:54,599 INFO L276 IsEmpty]: Start isEmpty. Operand 2681 states and 3762 transitions. [2022-01-10 07:12:54,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:12:54,601 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:54,601 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] [2022-01-10 07:12:54,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 07:12:54,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:12:54,809 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:54,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:54,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1783241381, now seen corresponding path program 1 times [2022-01-10 07:12:54,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:54,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883091531] [2022-01-10 07:12:54,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:54,810 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:54,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:54,844 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:12:54,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 07:12:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:54,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:12:54,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:55,239 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 07:12:55,240 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:55,240 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:55,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883091531] [2022-01-10 07:12:55,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883091531] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:55,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:55,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:12:55,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143320981] [2022-01-10 07:12:55,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:55,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:12:55,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:55,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:12:55,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:12:55,241 INFO L87 Difference]: Start difference. First operand 2681 states and 3762 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 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 07:12:56,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:56,368 INFO L93 Difference]: Finished difference Result 10624 states and 15489 transitions. [2022-01-10 07:12:56,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:12:56,368 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 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 101 [2022-01-10 07:12:56,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:56,391 INFO L225 Difference]: With dead ends: 10624 [2022-01-10 07:12:56,391 INFO L226 Difference]: Without dead ends: 9264 [2022-01-10 07:12:56,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:12:56,395 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 1775 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1775 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:56,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1775 Valid, 925 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:12:56,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9264 states. [2022-01-10 07:12:56,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9264 to 3570. [2022-01-10 07:12:56,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3570 states, 3569 states have (on average 1.3771364527878958) internal successors, (4915), 3569 states have internal predecessors, (4915), 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 07:12:56,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3570 states to 3570 states and 4915 transitions. [2022-01-10 07:12:56,633 INFO L78 Accepts]: Start accepts. Automaton has 3570 states and 4915 transitions. Word has length 101 [2022-01-10 07:12:56,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:56,634 INFO L470 AbstractCegarLoop]: Abstraction has 3570 states and 4915 transitions. [2022-01-10 07:12:56,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 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 07:12:56,634 INFO L276 IsEmpty]: Start isEmpty. Operand 3570 states and 4915 transitions. [2022-01-10 07:12:56,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:12:56,637 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:56,637 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] [2022-01-10 07:12:56,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-01-10 07:12:56,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:12:56,846 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:56,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:56,847 INFO L85 PathProgramCache]: Analyzing trace with hash 372537284, now seen corresponding path program 1 times [2022-01-10 07:12:56,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:56,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56203239] [2022-01-10 07:12:56,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:56,847 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:56,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:56,848 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:12:56,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 07:12:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:56,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:12:56,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:57,082 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 07:12:57,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:57,082 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:57,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56203239] [2022-01-10 07:12:57,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [56203239] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:57,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:57,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:12:57,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767457091] [2022-01-10 07:12:57,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:57,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:12:57,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:57,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:12:57,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:12:57,083 INFO L87 Difference]: Start difference. First operand 3570 states and 4915 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 07:12:57,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:57,386 INFO L93 Difference]: Finished difference Result 6745 states and 9563 transitions. [2022-01-10 07:12:57,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:12:57,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 101 [2022-01-10 07:12:57,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:57,399 INFO L225 Difference]: With dead ends: 6745 [2022-01-10 07:12:57,399 INFO L226 Difference]: Without dead ends: 5047 [2022-01-10 07:12:57,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 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 07:12:57,401 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 250 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:57,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 687 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:12:57,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5047 states. [2022-01-10 07:12:57,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5047 to 5045. [2022-01-10 07:12:57,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5045 states, 5044 states have (on average 1.4000793021411577) internal successors, (7062), 5044 states have internal predecessors, (7062), 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 07:12:57,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5045 states to 5045 states and 7062 transitions. [2022-01-10 07:12:57,717 INFO L78 Accepts]: Start accepts. Automaton has 5045 states and 7062 transitions. Word has length 101 [2022-01-10 07:12:57,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:57,718 INFO L470 AbstractCegarLoop]: Abstraction has 5045 states and 7062 transitions. [2022-01-10 07:12:57,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 07:12:57,718 INFO L276 IsEmpty]: Start isEmpty. Operand 5045 states and 7062 transitions. [2022-01-10 07:12:57,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:12:57,725 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:57,725 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] [2022-01-10 07:12:57,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-01-10 07:12:57,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:12:57,932 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:57,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:57,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1310912107, now seen corresponding path program 1 times [2022-01-10 07:12:57,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:57,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022708119] [2022-01-10 07:12:57,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:57,933 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:57,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:57,934 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:12:57,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 07:12:58,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:58,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:12:58,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:58,197 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 07:12:58,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:58,198 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:58,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022708119] [2022-01-10 07:12:58,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2022708119] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:58,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:58,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:12:58,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861790211] [2022-01-10 07:12:58,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:58,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:12:58,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:58,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:12:58,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:12:58,199 INFO L87 Difference]: Start difference. First operand 5045 states and 7062 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 07:12:58,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:58,766 INFO L93 Difference]: Finished difference Result 10881 states and 15551 transitions. [2022-01-10 07:12:58,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:12:58,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 101 [2022-01-10 07:12:58,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:58,780 INFO L225 Difference]: With dead ends: 10881 [2022-01-10 07:12:58,780 INFO L226 Difference]: Without dead ends: 8495 [2022-01-10 07:12:58,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 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 07:12:58,819 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 197 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:58,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 677 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:12:58,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8495 states. [2022-01-10 07:12:59,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8495 to 8493. [2022-01-10 07:12:59,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8493 states, 8492 states have (on average 1.4089731512011305) internal successors, (11965), 8492 states have internal predecessors, (11965), 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 07:12:59,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8493 states to 8493 states and 11965 transitions. [2022-01-10 07:12:59,394 INFO L78 Accepts]: Start accepts. Automaton has 8493 states and 11965 transitions. Word has length 101 [2022-01-10 07:12:59,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:59,395 INFO L470 AbstractCegarLoop]: Abstraction has 8493 states and 11965 transitions. [2022-01-10 07:12:59,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 07:12:59,395 INFO L276 IsEmpty]: Start isEmpty. Operand 8493 states and 11965 transitions. [2022-01-10 07:12:59,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:12:59,401 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:59,401 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] [2022-01-10 07:12:59,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-01-10 07:12:59,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:12:59,608 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:59,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:59,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1539396964, now seen corresponding path program 1 times [2022-01-10 07:12:59,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:59,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [9426347] [2022-01-10 07:12:59,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:59,609 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:59,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:59,610 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:12:59,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-01-10 07:12:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:59,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:12:59,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:59,909 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 07:12:59,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:59,909 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:59,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [9426347] [2022-01-10 07:12:59,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [9426347] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:59,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:59,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:12:59,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904050146] [2022-01-10 07:12:59,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:59,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:12:59,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:59,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:12:59,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:12:59,911 INFO L87 Difference]: Start difference. First operand 8493 states and 11965 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 07:13:00,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:00,955 INFO L93 Difference]: Finished difference Result 19435 states and 27810 transitions. [2022-01-10 07:13:00,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:13:00,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 101 [2022-01-10 07:13:00,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:00,980 INFO L225 Difference]: With dead ends: 19435 [2022-01-10 07:13:00,981 INFO L226 Difference]: Without dead ends: 14281 [2022-01-10 07:13:00,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 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 07:13:00,990 INFO L933 BasicCegarLoop]: 469 mSDtfsCounter, 230 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:00,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 792 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:13:01,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14281 states. [2022-01-10 07:13:02,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14281 to 14279. [2022-01-10 07:13:02,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14279 states, 14278 states have (on average 1.4052388289676425) internal successors, (20064), 14278 states have internal predecessors, (20064), 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 07:13:02,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14279 states to 14279 states and 20064 transitions. [2022-01-10 07:13:02,085 INFO L78 Accepts]: Start accepts. Automaton has 14279 states and 20064 transitions. Word has length 101 [2022-01-10 07:13:02,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:02,087 INFO L470 AbstractCegarLoop]: Abstraction has 14279 states and 20064 transitions. [2022-01-10 07:13:02,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 07:13:02,087 INFO L276 IsEmpty]: Start isEmpty. Operand 14279 states and 20064 transitions. [2022-01-10 07:13:02,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 07:13:02,099 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:02,099 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] [2022-01-10 07:13:02,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-01-10 07:13:02,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:02,308 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:02,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:02,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1209586839, now seen corresponding path program 1 times [2022-01-10 07:13:02,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:02,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [481686672] [2022-01-10 07:13:02,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:02,309 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:02,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:02,316 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:02,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-01-10 07:13:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:02,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:13:02,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:02,616 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 07:13:02,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:02,616 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:02,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [481686672] [2022-01-10 07:13:02,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [481686672] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:02,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:02,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:13:02,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454947355] [2022-01-10 07:13:02,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:02,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:13:02,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:02,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:13:02,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:13:02,617 INFO L87 Difference]: Start difference. First operand 14279 states and 20064 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 07:13:04,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:04,642 INFO L93 Difference]: Finished difference Result 34448 states and 49090 transitions. [2022-01-10 07:13:04,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:13:04,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 102 [2022-01-10 07:13:04,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:04,681 INFO L225 Difference]: With dead ends: 34448 [2022-01-10 07:13:04,681 INFO L226 Difference]: Without dead ends: 23998 [2022-01-10 07:13:04,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 100 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 07:13:04,696 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 245 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:04,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 669 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:13:04,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23998 states. [2022-01-10 07:13:06,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23998 to 23996. [2022-01-10 07:13:06,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23996 states, 23995 states have (on average 1.398291310689727) internal successors, (33552), 23995 states have internal predecessors, (33552), 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 07:13:06,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23996 states to 23996 states and 33552 transitions. [2022-01-10 07:13:06,700 INFO L78 Accepts]: Start accepts. Automaton has 23996 states and 33552 transitions. Word has length 102 [2022-01-10 07:13:06,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:06,700 INFO L470 AbstractCegarLoop]: Abstraction has 23996 states and 33552 transitions. [2022-01-10 07:13:06,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 07:13:06,700 INFO L276 IsEmpty]: Start isEmpty. Operand 23996 states and 33552 transitions. [2022-01-10 07:13:06,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 07:13:06,715 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:06,715 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] [2022-01-10 07:13:06,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-01-10 07:13:06,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:06,922 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:06,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:06,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1313080912, now seen corresponding path program 1 times [2022-01-10 07:13:06,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:06,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1210266590] [2022-01-10 07:13:06,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:06,923 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:06,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:06,924 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:06,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-01-10 07:13:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:07,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:13:07,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:07,392 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 07:13:07,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:07,393 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:07,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1210266590] [2022-01-10 07:13:07,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1210266590] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:07,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:07,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:13:07,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652773412] [2022-01-10 07:13:07,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:07,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:13:07,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:07,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:13:07,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:13:07,394 INFO L87 Difference]: Start difference. First operand 23996 states and 33552 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 07:13:09,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:09,560 INFO L93 Difference]: Finished difference Result 25945 states and 36279 transitions. [2022-01-10 07:13:09,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:13:09,561 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 102 [2022-01-10 07:13:09,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:09,590 INFO L225 Difference]: With dead ends: 25945 [2022-01-10 07:13:09,590 INFO L226 Difference]: Without dead ends: 23997 [2022-01-10 07:13:09,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:13:09,597 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 53 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:09,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 740 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 137 Unchecked, 0.1s Time] [2022-01-10 07:13:09,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23997 states. [2022-01-10 07:13:11,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23997 to 23997. [2022-01-10 07:13:11,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23997 states, 23996 states have (on average 1.3982747124520754) internal successors, (33553), 23996 states have internal predecessors, (33553), 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 07:13:11,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23997 states to 23997 states and 33553 transitions. [2022-01-10 07:13:11,527 INFO L78 Accepts]: Start accepts. Automaton has 23997 states and 33553 transitions. Word has length 102 [2022-01-10 07:13:11,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:11,528 INFO L470 AbstractCegarLoop]: Abstraction has 23997 states and 33553 transitions. [2022-01-10 07:13:11,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 07:13:11,528 INFO L276 IsEmpty]: Start isEmpty. Operand 23997 states and 33553 transitions. [2022-01-10 07:13:11,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 07:13:11,541 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:11,541 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] [2022-01-10 07:13:11,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-01-10 07:13:11,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:11,749 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:11,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:11,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1912364656, now seen corresponding path program 1 times [2022-01-10 07:13:11,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:11,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [209042382] [2022-01-10 07:13:11,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:11,750 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:11,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:11,751 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:11,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-01-10 07:13:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:11,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:13:11,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:12,197 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 07:13:12,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:12,198 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:12,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [209042382] [2022-01-10 07:13:12,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [209042382] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:12,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:12,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:13:12,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424803496] [2022-01-10 07:13:12,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:12,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:13:12,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:12,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:13:12,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:13:12,199 INFO L87 Difference]: Start difference. First operand 23997 states and 33553 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 07:13:14,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:14,151 INFO L93 Difference]: Finished difference Result 25967 states and 36298 transitions. [2022-01-10 07:13:14,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:13:14,151 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 102 [2022-01-10 07:13:14,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:14,178 INFO L225 Difference]: With dead ends: 25967 [2022-01-10 07:13:14,179 INFO L226 Difference]: Without dead ends: 23997 [2022-01-10 07:13:14,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:13:14,186 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 62 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:14,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 569 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 27 Unchecked, 0.1s Time] [2022-01-10 07:13:14,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23997 states. [2022-01-10 07:13:16,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23997 to 23997. [2022-01-10 07:13:16,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23997 states, 23996 states have (on average 1.3982330388398065) internal successors, (33552), 23996 states have internal predecessors, (33552), 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 07:13:16,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23997 states to 23997 states and 33552 transitions. [2022-01-10 07:13:16,163 INFO L78 Accepts]: Start accepts. Automaton has 23997 states and 33552 transitions. Word has length 102 [2022-01-10 07:13:16,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:16,163 INFO L470 AbstractCegarLoop]: Abstraction has 23997 states and 33552 transitions. [2022-01-10 07:13:16,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 07:13:16,164 INFO L276 IsEmpty]: Start isEmpty. Operand 23997 states and 33552 transitions. [2022-01-10 07:13:16,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 07:13:16,177 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:16,177 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] [2022-01-10 07:13:16,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-01-10 07:13:16,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:16,381 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:16,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:16,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1414641420, now seen corresponding path program 1 times [2022-01-10 07:13:16,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:16,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1204424880] [2022-01-10 07:13:16,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:16,382 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:16,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:16,384 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:16,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-01-10 07:13:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:16,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:13:16,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:16,744 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 07:13:16,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:16,745 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:16,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1204424880] [2022-01-10 07:13:16,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1204424880] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:16,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:16,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:13:16,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854882800] [2022-01-10 07:13:16,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:16,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:13:16,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:16,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:13:16,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:13:16,746 INFO L87 Difference]: Start difference. First operand 23997 states and 33552 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 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 07:13:24,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:24,611 INFO L93 Difference]: Finished difference Result 90489 states and 128064 transitions. [2022-01-10 07:13:24,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:13:24,611 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 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 102 [2022-01-10 07:13:24,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:24,838 INFO L225 Difference]: With dead ends: 90489 [2022-01-10 07:13:24,838 INFO L226 Difference]: Without dead ends: 75095 [2022-01-10 07:13:24,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:13:24,890 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 2382 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2382 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:24,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2382 Valid, 685 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:13:24,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75095 states. [2022-01-10 07:13:29,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75095 to 44353. [2022-01-10 07:13:29,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44353 states, 44352 states have (on average 1.3916847041847042) internal successors, (61724), 44352 states have internal predecessors, (61724), 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 07:13:29,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44353 states to 44353 states and 61724 transitions. [2022-01-10 07:13:29,627 INFO L78 Accepts]: Start accepts. Automaton has 44353 states and 61724 transitions. Word has length 102 [2022-01-10 07:13:29,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:29,627 INFO L470 AbstractCegarLoop]: Abstraction has 44353 states and 61724 transitions. [2022-01-10 07:13:29,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 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 07:13:29,628 INFO L276 IsEmpty]: Start isEmpty. Operand 44353 states and 61724 transitions. [2022-01-10 07:13:29,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 07:13:29,644 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:29,644 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] [2022-01-10 07:13:29,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-01-10 07:13:29,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:29,851 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:29,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:29,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1729827574, now seen corresponding path program 1 times [2022-01-10 07:13:29,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:29,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563744507] [2022-01-10 07:13:29,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:29,852 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:29,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:29,853 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:29,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-01-10 07:13:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:29,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:13:29,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:30,099 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 07:13:30,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:30,099 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:30,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [563744507] [2022-01-10 07:13:30,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [563744507] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:30,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:30,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:13:30,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733674272] [2022-01-10 07:13:30,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:30,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:13:30,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:30,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:13:30,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:13:30,100 INFO L87 Difference]: Start difference. First operand 44353 states and 61724 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 07:13:36,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:36,989 INFO L93 Difference]: Finished difference Result 85655 states and 120530 transitions. [2022-01-10 07:13:36,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:13:36,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 102 [2022-01-10 07:13:36,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:37,112 INFO L225 Difference]: With dead ends: 85655 [2022-01-10 07:13:37,112 INFO L226 Difference]: Without dead ends: 65635 [2022-01-10 07:13:37,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 100 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 07:13:37,144 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 268 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:37,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 507 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:13:37,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65635 states.