/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.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:10:05,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:10:05,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:10:05,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 07:10:05,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:10:05,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:10:05,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:10:05,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:10:05,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:10:05,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:10:05,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:10:05,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:10:05,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:10:05,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:10:05,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:10:05,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:10:05,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 07:10:05,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:10:05,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:10:05,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:10:05,485 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 07:10:05,506 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:10:05,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:10:05,507 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:10:05,507 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:10:05,508 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:10:05,508 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:10:05,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:10:05,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:10:05,509 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:10:05,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:10:05,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:10:05,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:10:05,510 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:10:05,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:10:05,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:10:05,511 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:10:05,511 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:10:05,511 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:10:05,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:10:05,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:10:05,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:10:05,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:10:05,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:10:05,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:10:05,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:10:05,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:10:05,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:10:05,513 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:10:05,514 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:10:05,514 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:10:05,514 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:10:05,514 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:10:05,514 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:10:05,514 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:10:05,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:10:05,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:10:05,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:10:05,731 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:10:05,731 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:10:05,732 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 07:10:05,793 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f0ee84d0/0b1d0851ecef4702815caa1a782c20d9/FLAG5337e8803 [2022-01-10 07:10:06,173 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:10:06,173 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 07:10:06,181 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f0ee84d0/0b1d0851ecef4702815caa1a782c20d9/FLAG5337e8803 [2022-01-10 07:10:06,555 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f0ee84d0/0b1d0851ecef4702815caa1a782c20d9 [2022-01-10 07:10:06,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:10:06,558 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:10:06,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:10:06,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:10:06,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:10:06,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:10:06" (1/1) ... [2022-01-10 07:10:06,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61172ea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:06, skipping insertion in model container [2022-01-10 07:10:06,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:10:06" (1/1) ... [2022-01-10 07:10:06,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:10:06,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:10:06,815 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.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7105,7118] [2022-01-10 07:10:06,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:10:06,884 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:10:06,928 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.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7105,7118] [2022-01-10 07:10:06,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:10:07,006 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:10:07,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:07 WrapperNode [2022-01-10 07:10:07,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:10:07,008 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:10:07,008 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:10:07,008 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:10:07,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:07" (1/1) ... [2022-01-10 07:10:07,047 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:07" (1/1) ... [2022-01-10 07:10:07,101 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 648 [2022-01-10 07:10:07,101 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:10:07,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:10:07,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:10:07,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:10:07,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:07" (1/1) ... [2022-01-10 07:10:07,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:07" (1/1) ... [2022-01-10 07:10:07,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:07" (1/1) ... [2022-01-10 07:10:07,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:07" (1/1) ... [2022-01-10 07:10:07,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:07" (1/1) ... [2022-01-10 07:10:07,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:07" (1/1) ... [2022-01-10 07:10:07,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:07" (1/1) ... [2022-01-10 07:10:07,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:10:07,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:10:07,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:10:07,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:10:07,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:07" (1/1) ... [2022-01-10 07:10:07,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:10:07,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:10:07,190 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 07:10:07,196 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 07:10:07,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:10:07,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:10:07,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:10:07,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:10:07,342 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:10:07,344 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:10:07,938 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:10:07,950 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:10:07,950 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 07:10:07,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:10:07 BoogieIcfgContainer [2022-01-10 07:10:07,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:10:07,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:10:07,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:10:07,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:10:07,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:10:06" (1/3) ... [2022-01-10 07:10:07,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@390cf8d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:10:07, skipping insertion in model container [2022-01-10 07:10:07,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:07" (2/3) ... [2022-01-10 07:10:07,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@390cf8d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:10:07, skipping insertion in model container [2022-01-10 07:10:07,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:10:07" (3/3) ... [2022-01-10 07:10:07,963 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 07:10:07,969 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:10:07,969 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 07:10:08,013 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:10:08,019 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 07:10:08,020 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 07:10:08,042 INFO L276 IsEmpty]: Start isEmpty. Operand has 179 states, 177 states have (on average 1.7175141242937852) internal successors, (304), 178 states have internal predecessors, (304), 0 states have call successors, (0), 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 07:10:08,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 07:10:08,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:08,054 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] [2022-01-10 07:10:08,055 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:08,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:08,068 INFO L85 PathProgramCache]: Analyzing trace with hash -113151096, now seen corresponding path program 1 times [2022-01-10 07:10:08,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:08,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272304232] [2022-01-10 07:10:08,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:08,083 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:08,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:08,086 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 07:10:08,101 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 07:10:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:08,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:10:08,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:09,138 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 07:10:09,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:09,139 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:09,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272304232] [2022-01-10 07:10:09,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272304232] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:09,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:09,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 07:10:09,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319742069] [2022-01-10 07:10:09,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:09,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:10:09,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:09,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:10:09,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:10:09,182 INFO L87 Difference]: Start difference. First operand has 179 states, 177 states have (on average 1.7175141242937852) internal successors, (304), 178 states have internal predecessors, (304), 0 states have call successors, (0), 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 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 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 07:10:09,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:09,366 INFO L93 Difference]: Finished difference Result 374 states and 612 transitions. [2022-01-10 07:10:09,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:10:09,369 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-01-10 07:10:09,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:09,378 INFO L225 Difference]: With dead ends: 374 [2022-01-10 07:10:09,379 INFO L226 Difference]: Without dead ends: 242 [2022-01-10 07:10:09,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:10:09,385 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 190 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:09,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 1040 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 33 Invalid, 0 Unknown, 46 Unchecked, 0.1s Time] [2022-01-10 07:10:09,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-01-10 07:10:09,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 193. [2022-01-10 07:10:09,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.453125) internal successors, (279), 192 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:09,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 279 transitions. [2022-01-10 07:10:09,427 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 279 transitions. Word has length 64 [2022-01-10 07:10:09,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:09,427 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 279 transitions. [2022-01-10 07:10:09,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 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 07:10:09,428 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 279 transitions. [2022-01-10 07:10:09,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 07:10:09,429 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:09,429 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] [2022-01-10 07:10:09,442 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 07:10:09,639 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 07:10:09,640 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:09,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:09,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1633663374, now seen corresponding path program 1 times [2022-01-10 07:10:09,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:09,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1419390562] [2022-01-10 07:10:09,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:09,642 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:09,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:09,643 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 07:10:09,645 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 07:10:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:09,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:10:09,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:10,088 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 07:10:10,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:10,089 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:10,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1419390562] [2022-01-10 07:10:10,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1419390562] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:10,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:10,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:10:10,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075471748] [2022-01-10 07:10:10,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:10,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:10:10,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:10,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:10:10,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:10:10,096 INFO L87 Difference]: Start difference. First operand 193 states and 279 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 07:10:10,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:10,213 INFO L93 Difference]: Finished difference Result 329 states and 490 transitions. [2022-01-10 07:10:10,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:10:10,214 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-10 07:10:10,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:10,215 INFO L225 Difference]: With dead ends: 329 [2022-01-10 07:10:10,215 INFO L226 Difference]: Without dead ends: 198 [2022-01-10 07:10:10,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 61 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 07:10:10,217 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 35 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:10,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 522 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 107 Unchecked, 0.1s Time] [2022-01-10 07:10:10,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-01-10 07:10:10,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 197. [2022-01-10 07:10:10,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.4489795918367347) internal successors, (284), 196 states have internal predecessors, (284), 0 states have call successors, (0), 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 07:10:10,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 284 transitions. [2022-01-10 07:10:10,230 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 284 transitions. Word has length 65 [2022-01-10 07:10:10,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:10,231 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 284 transitions. [2022-01-10 07:10:10,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 07:10:10,231 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 284 transitions. [2022-01-10 07:10:10,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 07:10:10,232 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:10,233 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] [2022-01-10 07:10:10,243 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 07:10:10,442 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 07:10:10,443 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:10,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:10,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1123711212, now seen corresponding path program 1 times [2022-01-10 07:10:10,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:10,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116171894] [2022-01-10 07:10:10,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:10,445 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:10,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:10,446 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 07:10:10,448 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 07:10:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:10,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:10:10,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:10,835 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 07:10:10,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:10,836 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:10,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116171894] [2022-01-10 07:10:10,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1116171894] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:10,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:10,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:10:10,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398764083] [2022-01-10 07:10:10,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:10,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:10:10,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:10,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:10:10,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:10:10,842 INFO L87 Difference]: Start difference. First operand 197 states and 284 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 07:10:10,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:10,955 INFO L93 Difference]: Finished difference Result 320 states and 478 transitions. [2022-01-10 07:10:10,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:10:10,956 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-10 07:10:10,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:10,958 INFO L225 Difference]: With dead ends: 320 [2022-01-10 07:10:10,958 INFO L226 Difference]: Without dead ends: 209 [2022-01-10 07:10:10,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 61 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 07:10:10,962 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 36 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:10,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 417 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 21 Unchecked, 0.1s Time] [2022-01-10 07:10:10,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-01-10 07:10:10,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 206. [2022-01-10 07:10:10,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.4439024390243902) internal successors, (296), 205 states have internal predecessors, (296), 0 states have call successors, (0), 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 07:10:10,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 296 transitions. [2022-01-10 07:10:10,977 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 296 transitions. Word has length 65 [2022-01-10 07:10:10,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:10,977 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 296 transitions. [2022-01-10 07:10:10,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 07:10:10,978 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 296 transitions. [2022-01-10 07:10:10,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 07:10:10,979 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:10,979 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] [2022-01-10 07:10:10,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 07:10:11,189 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 07:10:11,189 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:11,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:11,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1602113565, now seen corresponding path program 1 times [2022-01-10 07:10:11,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:11,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221800543] [2022-01-10 07:10:11,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:11,191 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:11,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:11,192 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 07:10:11,193 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 07:10:11,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:11,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:10:11,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:11,586 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 07:10:11,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:11,587 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:11,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221800543] [2022-01-10 07:10:11,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221800543] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:11,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:11,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:10:11,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047533265] [2022-01-10 07:10:11,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:11,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:10:11,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:11,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:10:11,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:10:11,591 INFO L87 Difference]: Start difference. First operand 206 states and 296 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 07:10:11,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:11,708 INFO L93 Difference]: Finished difference Result 329 states and 489 transitions. [2022-01-10 07:10:11,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:10:11,708 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-10 07:10:11,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:11,709 INFO L225 Difference]: With dead ends: 329 [2022-01-10 07:10:11,709 INFO L226 Difference]: Without dead ends: 208 [2022-01-10 07:10:11,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 61 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 07:10:11,711 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 24 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:11,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 635 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 107 Unchecked, 0.1s Time] [2022-01-10 07:10:11,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-01-10 07:10:11,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 207. [2022-01-10 07:10:11,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.441747572815534) internal successors, (297), 206 states have internal predecessors, (297), 0 states have call successors, (0), 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 07:10:11,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 297 transitions. [2022-01-10 07:10:11,719 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 297 transitions. Word has length 65 [2022-01-10 07:10:11,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:11,719 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 297 transitions. [2022-01-10 07:10:11,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 07:10:11,719 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 297 transitions. [2022-01-10 07:10:11,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 07:10:11,721 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:11,721 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] [2022-01-10 07:10:11,730 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 07:10:11,930 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 07:10:11,930 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:11,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:11,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1945881281, now seen corresponding path program 1 times [2022-01-10 07:10:11,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:11,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595707314] [2022-01-10 07:10:11,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:11,932 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:11,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:11,933 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 07:10:11,935 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 07:10:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:12,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:10:12,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:12,263 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 07:10:12,263 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:12,264 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:12,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [595707314] [2022-01-10 07:10:12,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [595707314] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:12,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:12,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:10:12,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530666423] [2022-01-10 07:10:12,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:12,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:10:12,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:12,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:10:12,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:10:12,266 INFO L87 Difference]: Start difference. First operand 207 states and 297 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 07:10:12,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:12,425 INFO L93 Difference]: Finished difference Result 348 states and 514 transitions. [2022-01-10 07:10:12,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:10:12,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-10 07:10:12,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:12,427 INFO L225 Difference]: With dead ends: 348 [2022-01-10 07:10:12,427 INFO L226 Difference]: Without dead ends: 207 [2022-01-10 07:10:12,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 61 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 07:10:12,428 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 24 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 106 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:12,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 638 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 194 Invalid, 0 Unknown, 106 Unchecked, 0.1s Time] [2022-01-10 07:10:12,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-01-10 07:10:12,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2022-01-10 07:10:12,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.4368932038834952) internal successors, (296), 206 states have internal predecessors, (296), 0 states have call successors, (0), 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 07:10:12,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 296 transitions. [2022-01-10 07:10:12,435 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 296 transitions. Word has length 65 [2022-01-10 07:10:12,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:12,435 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 296 transitions. [2022-01-10 07:10:12,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 07:10:12,436 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 296 transitions. [2022-01-10 07:10:12,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 07:10:12,437 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:12,437 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] [2022-01-10 07:10:12,453 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 07:10:12,646 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 07:10:12,647 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:12,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:12,647 INFO L85 PathProgramCache]: Analyzing trace with hash 2104827420, now seen corresponding path program 1 times [2022-01-10 07:10:12,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:12,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566235944] [2022-01-10 07:10:12,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:12,648 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:12,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:12,649 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 07:10:12,651 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 07:10:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:12,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:10:12,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:13,497 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 07:10:13,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:13,497 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:13,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566235944] [2022-01-10 07:10:13,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1566235944] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:13,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:13,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:10:13,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154383657] [2022-01-10 07:10:13,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:13,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:10:13,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:13,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:10:13,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:10:13,499 INFO L87 Difference]: Start difference. First operand 207 states and 296 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 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 07:10:13,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:13,598 INFO L93 Difference]: Finished difference Result 322 states and 474 transitions. [2022-01-10 07:10:13,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:10:13,599 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 07:10:13,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:13,600 INFO L225 Difference]: With dead ends: 322 [2022-01-10 07:10:13,600 INFO L226 Difference]: Without dead ends: 234 [2022-01-10 07:10:13,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 58 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 07:10:13,601 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 55 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 123 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:13,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 687 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 123 Unchecked, 0.1s Time] [2022-01-10 07:10:13,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-01-10 07:10:13,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 230. [2022-01-10 07:10:13,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 1.4192139737991267) internal successors, (325), 229 states have internal predecessors, (325), 0 states have call successors, (0), 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 07:10:13,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 325 transitions. [2022-01-10 07:10:13,609 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 325 transitions. Word has length 66 [2022-01-10 07:10:13,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:13,609 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 325 transitions. [2022-01-10 07:10:13,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 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 07:10:13,609 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 325 transitions. [2022-01-10 07:10:13,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 07:10:13,610 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:13,610 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] [2022-01-10 07:10:13,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 07:10:13,811 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 07:10:13,811 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:13,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:13,812 INFO L85 PathProgramCache]: Analyzing trace with hash -2123489828, now seen corresponding path program 1 times [2022-01-10 07:10:13,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:13,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [543898012] [2022-01-10 07:10:13,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:13,812 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:13,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:13,813 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 07:10:13,814 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 07:10:13,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:13,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:10:13,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:14,443 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 07:10:14,444 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:14,444 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:14,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [543898012] [2022-01-10 07:10:14,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [543898012] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:14,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:14,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:10:14,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130184899] [2022-01-10 07:10:14,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:14,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:10:14,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:14,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:10:14,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:10:14,446 INFO L87 Difference]: Start difference. First operand 230 states and 325 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 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 07:10:14,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:14,583 INFO L93 Difference]: Finished difference Result 341 states and 499 transitions. [2022-01-10 07:10:14,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:10:14,584 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 07:10:14,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:14,585 INFO L225 Difference]: With dead ends: 341 [2022-01-10 07:10:14,585 INFO L226 Difference]: Without dead ends: 241 [2022-01-10 07:10:14,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 58 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 07:10:14,587 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 29 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 368 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:14,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 1157 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 368 Unchecked, 0.1s Time] [2022-01-10 07:10:14,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-01-10 07:10:14,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 239. [2022-01-10 07:10:14,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.403361344537815) internal successors, (334), 238 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:14,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 334 transitions. [2022-01-10 07:10:14,595 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 334 transitions. Word has length 66 [2022-01-10 07:10:14,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:14,595 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 334 transitions. [2022-01-10 07:10:14,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 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 07:10:14,596 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 334 transitions. [2022-01-10 07:10:14,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 07:10:14,597 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:14,597 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] [2022-01-10 07:10:14,608 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 07:10:14,805 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 07:10:14,806 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:14,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:14,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1924269572, now seen corresponding path program 1 times [2022-01-10 07:10:14,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:14,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [996629740] [2022-01-10 07:10:14,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:14,807 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:14,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:14,808 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 07:10:14,809 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 07:10:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:14,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:10:14,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:15,609 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 07:10:15,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:15,610 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:15,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [996629740] [2022-01-10 07:10:15,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [996629740] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:15,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:15,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:10:15,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431728205] [2022-01-10 07:10:15,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:15,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:10:15,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:15,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:10:15,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:10:15,612 INFO L87 Difference]: Start difference. First operand 239 states and 334 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 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 07:10:15,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:15,721 INFO L93 Difference]: Finished difference Result 346 states and 498 transitions. [2022-01-10 07:10:15,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:10:15,722 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 07:10:15,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:15,724 INFO L225 Difference]: With dead ends: 346 [2022-01-10 07:10:15,724 INFO L226 Difference]: Without dead ends: 264 [2022-01-10 07:10:15,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 58 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 07:10:15,725 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 48 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 130 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:15,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 709 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 130 Unchecked, 0.1s Time] [2022-01-10 07:10:15,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-01-10 07:10:15,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 261. [2022-01-10 07:10:15,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.3884615384615384) internal successors, (361), 260 states have internal predecessors, (361), 0 states have call successors, (0), 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 07:10:15,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 361 transitions. [2022-01-10 07:10:15,733 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 361 transitions. Word has length 66 [2022-01-10 07:10:15,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:15,734 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 361 transitions. [2022-01-10 07:10:15,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 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 07:10:15,734 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 361 transitions. [2022-01-10 07:10:15,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 07:10:15,735 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:15,735 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] [2022-01-10 07:10:15,747 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 07:10:15,944 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 07:10:15,945 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:15,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:15,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1813219900, now seen corresponding path program 1 times [2022-01-10 07:10:15,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:15,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127891914] [2022-01-10 07:10:15,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:15,946 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:15,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:15,947 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 07:10:15,948 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 07:10:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:16,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:10:16,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:16,722 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 07:10:16,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:16,722 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:16,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127891914] [2022-01-10 07:10:16,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127891914] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:16,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:16,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:10:16,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667115387] [2022-01-10 07:10:16,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:16,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:10:16,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:16,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:10:16,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:10:16,724 INFO L87 Difference]: Start difference. First operand 261 states and 361 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 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 07:10:16,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:16,833 INFO L93 Difference]: Finished difference Result 381 states and 551 transitions. [2022-01-10 07:10:16,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:10:16,834 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 07:10:16,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:16,835 INFO L225 Difference]: With dead ends: 381 [2022-01-10 07:10:16,835 INFO L226 Difference]: Without dead ends: 287 [2022-01-10 07:10:16,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 58 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 07:10:16,836 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 74 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 168 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:16,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 758 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 168 Unchecked, 0.1s Time] [2022-01-10 07:10:16,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-01-10 07:10:16,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 282. [2022-01-10 07:10:16,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 1.387900355871886) internal successors, (390), 281 states have internal predecessors, (390), 0 states have call successors, (0), 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 07:10:16,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 390 transitions. [2022-01-10 07:10:16,845 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 390 transitions. Word has length 66 [2022-01-10 07:10:16,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:16,846 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 390 transitions. [2022-01-10 07:10:16,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 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 07:10:16,846 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 390 transitions. [2022-01-10 07:10:16,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 07:10:16,847 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:16,847 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] [2022-01-10 07:10:16,856 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 07:10:17,055 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 07:10:17,056 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:17,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:17,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1161568472, now seen corresponding path program 1 times [2022-01-10 07:10:17,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:17,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439337481] [2022-01-10 07:10:17,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:17,057 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:17,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:17,058 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 07:10:17,060 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 07:10:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:17,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:10:17,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:17,423 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 07:10:17,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:17,424 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:17,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [439337481] [2022-01-10 07:10:17,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [439337481] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:17,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:17,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:10:17,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721694748] [2022-01-10 07:10:17,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:17,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:10:17,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:17,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:10:17,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:10:17,426 INFO L87 Difference]: Start difference. First operand 282 states and 390 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 07:10:17,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:17,516 INFO L93 Difference]: Finished difference Result 398 states and 575 transitions. [2022-01-10 07:10:17,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:10:17,516 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-01-10 07:10:17,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:17,518 INFO L225 Difference]: With dead ends: 398 [2022-01-10 07:10:17,518 INFO L226 Difference]: Without dead ends: 287 [2022-01-10 07:10:17,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 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 07:10:17,519 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 40 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:17,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 414 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 23 Unchecked, 0.1s Time] [2022-01-10 07:10:17,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-01-10 07:10:17,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 283. [2022-01-10 07:10:17,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 1.3865248226950355) internal successors, (391), 282 states have internal predecessors, (391), 0 states have call successors, (0), 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 07:10:17,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 391 transitions. [2022-01-10 07:10:17,528 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 391 transitions. Word has length 67 [2022-01-10 07:10:17,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:17,528 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 391 transitions. [2022-01-10 07:10:17,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 07:10:17,528 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 391 transitions. [2022-01-10 07:10:17,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 07:10:17,529 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:17,529 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] [2022-01-10 07:10:17,539 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 07:10:17,738 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 07:10:17,739 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:17,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:17,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1044919201, now seen corresponding path program 1 times [2022-01-10 07:10:17,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:17,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986189882] [2022-01-10 07:10:17,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:17,740 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:17,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:17,741 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 07:10:17,743 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 07:10:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:17,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:10:17,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:18,395 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 07:10:18,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:18,395 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:18,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986189882] [2022-01-10 07:10:18,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1986189882] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:18,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:18,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 07:10:18,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827253491] [2022-01-10 07:10:18,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:18,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:10:18,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:18,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:10:18,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:10:18,397 INFO L87 Difference]: Start difference. First operand 283 states and 391 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 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 07:10:18,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:18,481 INFO L93 Difference]: Finished difference Result 731 states and 1103 transitions. [2022-01-10 07:10:18,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:10:18,482 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-01-10 07:10:18,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:18,485 INFO L225 Difference]: With dead ends: 731 [2022-01-10 07:10:18,485 INFO L226 Difference]: Without dead ends: 650 [2022-01-10 07:10:18,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:10:18,486 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 1213 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:18,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1213 Valid, 828 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:10:18,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2022-01-10 07:10:18,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 384. [2022-01-10 07:10:18,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 1.4386422976501305) internal successors, (551), 383 states have internal predecessors, (551), 0 states have call successors, (0), 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 07:10:18,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 551 transitions. [2022-01-10 07:10:18,503 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 551 transitions. Word has length 67 [2022-01-10 07:10:18,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:18,503 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 551 transitions. [2022-01-10 07:10:18,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 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 07:10:18,504 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 551 transitions. [2022-01-10 07:10:18,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 07:10:18,504 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:18,504 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] [2022-01-10 07:10:18,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 07:10:18,711 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 07:10:18,712 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:18,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:18,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1687354013, now seen corresponding path program 1 times [2022-01-10 07:10:18,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:18,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510547946] [2022-01-10 07:10:18,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:18,712 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:18,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:18,713 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 07:10:18,714 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 07:10:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:18,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:10:18,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:18,896 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 07:10:18,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:18,896 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:18,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510547946] [2022-01-10 07:10:18,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510547946] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:18,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:18,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:10:18,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077052459] [2022-01-10 07:10:18,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:18,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:10:18,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:18,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:10:18,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:10:18,898 INFO L87 Difference]: Start difference. First operand 384 states and 551 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 07:10:18,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:18,949 INFO L93 Difference]: Finished difference Result 548 states and 810 transitions. [2022-01-10 07:10:18,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:10:18,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-01-10 07:10:18,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:18,952 INFO L225 Difference]: With dead ends: 548 [2022-01-10 07:10:18,952 INFO L226 Difference]: Without dead ends: 546 [2022-01-10 07:10:18,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 65 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 07:10:18,954 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 246 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 761 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 07:10:18,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 761 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:10:18,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-01-10 07:10:18,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 388. [2022-01-10 07:10:18,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 1.434108527131783) internal successors, (555), 387 states have internal predecessors, (555), 0 states have call successors, (0), 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 07:10:18,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 555 transitions. [2022-01-10 07:10:18,973 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 555 transitions. Word has length 68 [2022-01-10 07:10:18,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:18,973 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 555 transitions. [2022-01-10 07:10:18,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 07:10:18,974 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 555 transitions. [2022-01-10 07:10:18,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 07:10:18,974 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:18,977 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] [2022-01-10 07:10:18,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 07:10:19,186 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 07:10:19,187 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:19,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:19,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1047773961, now seen corresponding path program 1 times [2022-01-10 07:10:19,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:19,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [682217601] [2022-01-10 07:10:19,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:19,188 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:19,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:19,189 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 07:10:19,191 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 07:10:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:19,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:10:19,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:19,452 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 07:10:19,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:19,453 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:19,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [682217601] [2022-01-10 07:10:19,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [682217601] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:19,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:19,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:10:19,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205193104] [2022-01-10 07:10:19,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:19,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:10:19,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:19,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:10:19,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:10:19,454 INFO L87 Difference]: Start difference. First operand 388 states and 555 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 07:10:19,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:19,480 INFO L93 Difference]: Finished difference Result 630 states and 936 transitions. [2022-01-10 07:10:19,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:10:19,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 07:10:19,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:19,483 INFO L225 Difference]: With dead ends: 630 [2022-01-10 07:10:19,483 INFO L226 Difference]: Without dead ends: 466 [2022-01-10 07:10:19,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 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 07:10:19,485 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 176 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:19,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 837 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 17 Unchecked, 0.0s Time] [2022-01-10 07:10:19,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2022-01-10 07:10:19,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 462. [2022-01-10 07:10:19,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 461 states have (on average 1.4555314533622559) internal successors, (671), 461 states have internal predecessors, (671), 0 states have call successors, (0), 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 07:10:19,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 671 transitions. [2022-01-10 07:10:19,507 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 671 transitions. Word has length 69 [2022-01-10 07:10:19,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:19,507 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 671 transitions. [2022-01-10 07:10:19,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 07:10:19,508 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 671 transitions. [2022-01-10 07:10:19,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 07:10:19,508 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:19,508 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] [2022-01-10 07:10:19,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 07:10:19,718 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 07:10:19,718 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:19,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:19,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1802228217, now seen corresponding path program 1 times [2022-01-10 07:10:19,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:19,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860722460] [2022-01-10 07:10:19,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:19,719 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:19,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:19,720 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 07:10:19,721 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 07:10:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:19,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:10:19,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:19,897 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 07:10:19,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:19,897 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:19,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860722460] [2022-01-10 07:10:19,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [860722460] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:19,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:19,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:10:19,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098808444] [2022-01-10 07:10:19,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:19,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:10:19,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:19,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:10:19,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:10:19,899 INFO L87 Difference]: Start difference. First operand 462 states and 671 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 07:10:19,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:19,935 INFO L93 Difference]: Finished difference Result 977 states and 1479 transitions. [2022-01-10 07:10:19,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:10:19,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 07:10:19,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:19,938 INFO L225 Difference]: With dead ends: 977 [2022-01-10 07:10:19,938 INFO L226 Difference]: Without dead ends: 721 [2022-01-10 07:10:19,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 67 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 07:10:19,939 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 159 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 492 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 07:10:19,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 492 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:10:19,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2022-01-10 07:10:19,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 719. [2022-01-10 07:10:19,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 718 states have (on average 1.4832869080779945) internal successors, (1065), 718 states have internal predecessors, (1065), 0 states have call successors, (0), 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 07:10:19,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1065 transitions. [2022-01-10 07:10:19,982 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1065 transitions. Word has length 69 [2022-01-10 07:10:19,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:19,983 INFO L470 AbstractCegarLoop]: Abstraction has 719 states and 1065 transitions. [2022-01-10 07:10:19,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 07:10:19,983 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1065 transitions. [2022-01-10 07:10:19,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 07:10:19,984 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:19,984 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] [2022-01-10 07:10:19,996 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 07:10:20,196 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 07:10:20,196 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:20,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:20,197 INFO L85 PathProgramCache]: Analyzing trace with hash -634921224, now seen corresponding path program 1 times [2022-01-10 07:10:20,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:20,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29388893] [2022-01-10 07:10:20,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:20,197 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:20,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:20,204 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 07:10:20,204 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 07:10:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:20,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:10:20,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:20,458 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 07:10:20,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:20,458 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:20,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29388893] [2022-01-10 07:10:20,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29388893] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:20,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:20,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:10:20,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522654529] [2022-01-10 07:10:20,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:20,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:10:20,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:20,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:10:20,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:10:20,460 INFO L87 Difference]: Start difference. First operand 719 states and 1065 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 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 07:10:20,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:20,924 INFO L93 Difference]: Finished difference Result 3742 states and 5758 transitions. [2022-01-10 07:10:20,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:10:20,924 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 07:10:20,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:20,937 INFO L225 Difference]: With dead ends: 3742 [2022-01-10 07:10:20,938 INFO L226 Difference]: Without dead ends: 3241 [2022-01-10 07:10:20,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 64 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 07:10:20,940 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 2590 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2590 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:20,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2590 Valid, 516 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:10:20,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3241 states. [2022-01-10 07:10:21,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3241 to 790. [2022-01-10 07:10:21,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 789 states have (on average 1.449936628643853) internal successors, (1144), 789 states have internal predecessors, (1144), 0 states have call successors, (0), 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 07:10:21,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 1144 transitions. [2022-01-10 07:10:21,008 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 1144 transitions. Word has length 69 [2022-01-10 07:10:21,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:21,009 INFO L470 AbstractCegarLoop]: Abstraction has 790 states and 1144 transitions. [2022-01-10 07:10:21,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 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 07:10:21,009 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 1144 transitions. [2022-01-10 07:10:21,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 07:10:21,013 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:21,013 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] [2022-01-10 07:10:21,025 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 07:10:21,225 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 07:10:21,225 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:21,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:21,226 INFO L85 PathProgramCache]: Analyzing trace with hash -255558887, now seen corresponding path program 1 times [2022-01-10 07:10:21,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:21,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [823024427] [2022-01-10 07:10:21,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:21,227 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:21,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:21,228 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 07:10:21,229 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 07:10:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:21,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:10:21,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:21,494 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 07:10:21,494 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:21,494 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:21,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [823024427] [2022-01-10 07:10:21,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [823024427] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:21,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:21,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:10:21,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220006865] [2022-01-10 07:10:21,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:21,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:10:21,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:21,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:10:21,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:10:21,496 INFO L87 Difference]: Start difference. First operand 790 states and 1144 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 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 07:10:21,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:21,858 INFO L93 Difference]: Finished difference Result 2743 states and 4101 transitions. [2022-01-10 07:10:21,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:10:21,859 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 07:10:21,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:21,867 INFO L225 Difference]: With dead ends: 2743 [2022-01-10 07:10:21,867 INFO L226 Difference]: Without dead ends: 2197 [2022-01-10 07:10:21,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 64 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 07:10:21,870 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 1224 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:21,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1224 Valid, 445 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:10:21,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2197 states. [2022-01-10 07:10:21,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2197 to 812. [2022-01-10 07:10:21,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 811 states have (on average 1.4155363748458694) internal successors, (1148), 811 states have internal predecessors, (1148), 0 states have call successors, (0), 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 07:10:21,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1148 transitions. [2022-01-10 07:10:21,932 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1148 transitions. Word has length 69 [2022-01-10 07:10:21,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:21,932 INFO L470 AbstractCegarLoop]: Abstraction has 812 states and 1148 transitions. [2022-01-10 07:10:21,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 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 07:10:21,933 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1148 transitions. [2022-01-10 07:10:21,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 07:10:21,934 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:21,934 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] [2022-01-10 07:10:21,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-01-10 07:10:22,143 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 07:10:22,144 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:22,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:22,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1041130329, now seen corresponding path program 1 times [2022-01-10 07:10:22,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:22,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [930836647] [2022-01-10 07:10:22,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:22,145 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:22,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:22,146 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 07:10:22,148 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 07:10:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:22,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:10:22,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:22,317 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 07:10:22,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:22,317 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:22,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [930836647] [2022-01-10 07:10:22,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [930836647] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:22,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:22,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:10:22,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54207797] [2022-01-10 07:10:22,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:22,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:10:22,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:22,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:10:22,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:10:22,319 INFO L87 Difference]: Start difference. First operand 812 states and 1148 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 07:10:22,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:22,408 INFO L93 Difference]: Finished difference Result 1837 states and 2692 transitions. [2022-01-10 07:10:22,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:10:22,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 07:10:22,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:22,413 INFO L225 Difference]: With dead ends: 1837 [2022-01-10 07:10:22,413 INFO L226 Difference]: Without dead ends: 1304 [2022-01-10 07:10:22,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 67 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 07:10:22,414 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 180 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 482 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 07:10:22,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 482 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:10:22,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2022-01-10 07:10:22,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1302. [2022-01-10 07:10:22,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1302 states, 1301 states have (on average 1.4373558800922368) internal successors, (1870), 1301 states have internal predecessors, (1870), 0 states have call successors, (0), 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 07:10:22,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 1870 transitions. [2022-01-10 07:10:22,523 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 1870 transitions. Word has length 69 [2022-01-10 07:10:22,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:22,523 INFO L470 AbstractCegarLoop]: Abstraction has 1302 states and 1870 transitions. [2022-01-10 07:10:22,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 07:10:22,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 1870 transitions. [2022-01-10 07:10:22,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 07:10:22,525 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:22,525 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] [2022-01-10 07:10:22,534 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 07:10:22,734 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 07:10:22,734 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:22,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:22,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1870206439, now seen corresponding path program 1 times [2022-01-10 07:10:22,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:22,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [805374430] [2022-01-10 07:10:22,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:22,736 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:22,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:22,737 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 07:10:22,739 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 07:10:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:22,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:10:22,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:22,974 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 07:10:22,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:22,974 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:22,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [805374430] [2022-01-10 07:10:22,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [805374430] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:22,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:22,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:10:22,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343784370] [2022-01-10 07:10:22,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:22,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:10:22,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:22,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:10:22,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:10:22,976 INFO L87 Difference]: Start difference. First operand 1302 states and 1870 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 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 07:10:23,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:23,643 INFO L93 Difference]: Finished difference Result 6252 states and 9239 transitions. [2022-01-10 07:10:23,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:10:23,647 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 07:10:23,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:23,668 INFO L225 Difference]: With dead ends: 6252 [2022-01-10 07:10:23,668 INFO L226 Difference]: Without dead ends: 5362 [2022-01-10 07:10:23,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 64 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 07:10:23,672 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 1218 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:23,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1218 Valid, 654 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:10:23,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5362 states. [2022-01-10 07:10:23,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5362 to 1508. [2022-01-10 07:10:23,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1508 states, 1507 states have (on average 1.400132714001327) internal successors, (2110), 1507 states have internal predecessors, (2110), 0 states have call successors, (0), 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 07:10:23,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 2110 transitions. [2022-01-10 07:10:23,835 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 2110 transitions. Word has length 69 [2022-01-10 07:10:23,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:23,835 INFO L470 AbstractCegarLoop]: Abstraction has 1508 states and 2110 transitions. [2022-01-10 07:10:23,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 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 07:10:23,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 2110 transitions. [2022-01-10 07:10:23,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 07:10:23,837 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:23,837 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] [2022-01-10 07:10:23,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 07:10:24,047 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 07:10:24,047 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:24,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:24,047 INFO L85 PathProgramCache]: Analyzing trace with hash -933815240, now seen corresponding path program 1 times [2022-01-10 07:10:24,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:24,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472849556] [2022-01-10 07:10:24,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:24,048 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:24,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:24,049 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 07:10:24,052 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 07:10:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:24,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:10:24,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:24,204 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 07:10:24,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:24,204 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:24,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472849556] [2022-01-10 07:10:24,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [472849556] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:24,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:24,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:10:24,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431770065] [2022-01-10 07:10:24,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:24,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:10:24,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:24,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:10:24,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:10:24,206 INFO L87 Difference]: Start difference. First operand 1508 states and 2110 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 07:10:24,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:24,360 INFO L93 Difference]: Finished difference Result 3309 states and 4751 transitions. [2022-01-10 07:10:24,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:10:24,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 07:10:24,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:24,369 INFO L225 Difference]: With dead ends: 3309 [2022-01-10 07:10:24,369 INFO L226 Difference]: Without dead ends: 2467 [2022-01-10 07:10:24,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 67 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 07:10:24,371 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 141 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 478 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 07:10:24,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 478 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:10:24,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2467 states. [2022-01-10 07:10:24,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2467 to 2465. [2022-01-10 07:10:24,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2465 states, 2464 states have (on average 1.4086850649350648) internal successors, (3471), 2464 states have internal predecessors, (3471), 0 states have call successors, (0), 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 07:10:24,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 3471 transitions. [2022-01-10 07:10:24,603 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 3471 transitions. Word has length 69 [2022-01-10 07:10:24,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:24,604 INFO L470 AbstractCegarLoop]: Abstraction has 2465 states and 3471 transitions. [2022-01-10 07:10:24,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 07:10:24,604 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 3471 transitions. [2022-01-10 07:10:24,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 07:10:24,606 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:24,606 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] [2022-01-10 07:10:24,622 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 07:10:24,815 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 07:10:24,816 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:24,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:24,816 INFO L85 PathProgramCache]: Analyzing trace with hash 804290264, now seen corresponding path program 1 times [2022-01-10 07:10:24,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:24,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [337622969] [2022-01-10 07:10:24,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:24,817 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:24,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:24,817 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 07:10:24,819 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 07:10:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:24,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:10:24,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:24,973 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 07:10:24,973 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:24,973 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:24,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [337622969] [2022-01-10 07:10:24,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [337622969] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:24,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:24,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:10:24,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701319271] [2022-01-10 07:10:24,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:24,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:10:24,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:24,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:10:24,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:10:24,974 INFO L87 Difference]: Start difference. First operand 2465 states and 3471 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 07:10:25,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:25,232 INFO L93 Difference]: Finished difference Result 5821 states and 8336 transitions. [2022-01-10 07:10:25,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:10:25,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 07:10:25,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:25,242 INFO L225 Difference]: With dead ends: 5821 [2022-01-10 07:10:25,243 INFO L226 Difference]: Without dead ends: 4047 [2022-01-10 07:10:25,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 67 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 07:10:25,245 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 165 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 593 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 07:10:25,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 593 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:10:25,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4047 states. [2022-01-10 07:10:25,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4047 to 4045. [2022-01-10 07:10:25,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4045 states, 4044 states have (on average 1.40108803165183) internal successors, (5666), 4044 states have internal predecessors, (5666), 0 states have call successors, (0), 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 07:10:25,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4045 states to 4045 states and 5666 transitions. [2022-01-10 07:10:25,584 INFO L78 Accepts]: Start accepts. Automaton has 4045 states and 5666 transitions. Word has length 69 [2022-01-10 07:10:25,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:25,584 INFO L470 AbstractCegarLoop]: Abstraction has 4045 states and 5666 transitions. [2022-01-10 07:10:25,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 07:10:25,585 INFO L276 IsEmpty]: Start isEmpty. Operand 4045 states and 5666 transitions. [2022-01-10 07:10:25,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 07:10:25,588 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:25,588 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] [2022-01-10 07:10:25,602 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 07:10:25,798 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 07:10:25,798 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:25,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:25,799 INFO L85 PathProgramCache]: Analyzing trace with hash 233968876, now seen corresponding path program 1 times [2022-01-10 07:10:25,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:25,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243548654] [2022-01-10 07:10:25,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:25,799 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:25,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:25,844 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 07:10:25,845 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 07:10:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:25,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:10:25,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:26,209 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 07:10:26,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:26,209 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:26,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243548654] [2022-01-10 07:10:26,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243548654] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:26,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:26,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:10:26,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674053590] [2022-01-10 07:10:26,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:26,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:10:26,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:26,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:10:26,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:10:26,211 INFO L87 Difference]: Start difference. First operand 4045 states and 5666 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 07:10:26,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:26,498 INFO L93 Difference]: Finished difference Result 5488 states and 7725 transitions. [2022-01-10 07:10:26,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:10:26,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-01-10 07:10:26,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:26,511 INFO L225 Difference]: With dead ends: 5488 [2022-01-10 07:10:26,511 INFO L226 Difference]: Without dead ends: 4045 [2022-01-10 07:10:26,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 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 07:10:26,513 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 40 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:26,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 401 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 18 Unchecked, 0.1s Time] [2022-01-10 07:10:26,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4045 states. [2022-01-10 07:10:26,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4045 to 4045. [2022-01-10 07:10:26,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4045 states, 4044 states have (on average 1.4008407517309593) internal successors, (5665), 4044 states have internal predecessors, (5665), 0 states have call successors, (0), 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 07:10:26,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4045 states to 4045 states and 5665 transitions. [2022-01-10 07:10:26,787 INFO L78 Accepts]: Start accepts. Automaton has 4045 states and 5665 transitions. Word has length 70 [2022-01-10 07:10:26,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:26,787 INFO L470 AbstractCegarLoop]: Abstraction has 4045 states and 5665 transitions. [2022-01-10 07:10:26,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 07:10:26,788 INFO L276 IsEmpty]: Start isEmpty. Operand 4045 states and 5665 transitions. [2022-01-10 07:10:26,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 07:10:26,791 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:26,791 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] [2022-01-10 07:10:26,800 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 07:10:26,999 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 07:10:27,000 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:27,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:27,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1148970998, now seen corresponding path program 1 times [2022-01-10 07:10:27,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:27,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1564673973] [2022-01-10 07:10:27,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:27,001 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:27,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:27,002 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 07:10:27,002 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 07:10:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:27,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:10:27,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:27,161 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 07:10:27,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:27,161 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:27,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1564673973] [2022-01-10 07:10:27,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1564673973] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:27,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:27,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:10:27,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704086188] [2022-01-10 07:10:27,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:27,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:10:27,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:27,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:10:27,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:10:27,163 INFO L87 Difference]: Start difference. First operand 4045 states and 5665 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 07:10:27,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:27,604 INFO L93 Difference]: Finished difference Result 8445 states and 11999 transitions. [2022-01-10 07:10:27,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:10:27,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-01-10 07:10:27,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:27,617 INFO L225 Difference]: With dead ends: 8445 [2022-01-10 07:10:27,618 INFO L226 Difference]: Without dead ends: 6678 [2022-01-10 07:10:27,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 68 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 07:10:27,621 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 201 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:27,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 363 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:10:27,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6678 states. [2022-01-10 07:10:28,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6678 to 6652. [2022-01-10 07:10:28,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6652 states, 6651 states have (on average 1.4242970981807248) internal successors, (9473), 6651 states have internal predecessors, (9473), 0 states have call successors, (0), 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 07:10:28,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6652 states to 6652 states and 9473 transitions. [2022-01-10 07:10:28,076 INFO L78 Accepts]: Start accepts. Automaton has 6652 states and 9473 transitions. Word has length 70 [2022-01-10 07:10:28,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:28,076 INFO L470 AbstractCegarLoop]: Abstraction has 6652 states and 9473 transitions. [2022-01-10 07:10:28,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 07:10:28,077 INFO L276 IsEmpty]: Start isEmpty. Operand 6652 states and 9473 transitions. [2022-01-10 07:10:28,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 07:10:28,080 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:28,080 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] [2022-01-10 07:10:28,091 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 07:10:28,289 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 07:10:28,290 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:28,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:28,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1497723701, now seen corresponding path program 1 times [2022-01-10 07:10:28,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:28,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329994729] [2022-01-10 07:10:28,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:28,291 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:28,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:28,292 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 07:10:28,292 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 07:10:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:28,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:10:28,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:28,577 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 07:10:28,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:28,578 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:28,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329994729] [2022-01-10 07:10:28,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [329994729] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:28,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:28,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:10:28,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552585500] [2022-01-10 07:10:28,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:28,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:10:28,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:28,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:10:28,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:10:28,579 INFO L87 Difference]: Start difference. First operand 6652 states and 9473 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 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 07:10:30,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:30,697 INFO L93 Difference]: Finished difference Result 32200 states and 45917 transitions. [2022-01-10 07:10:30,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:10:30,697 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-01-10 07:10:30,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:30,752 INFO L225 Difference]: With dead ends: 32200 [2022-01-10 07:10:30,752 INFO L226 Difference]: Without dead ends: 26813 [2022-01-10 07:10:30,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 65 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 07:10:30,765 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 1223 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:30,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1223 Valid, 483 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:10:30,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26813 states. [2022-01-10 07:10:31,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26813 to 7047. [2022-01-10 07:10:31,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7047 states, 7046 states have (on average 1.3986659097360203) internal successors, (9855), 7046 states have internal predecessors, (9855), 0 states have call successors, (0), 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 07:10:31,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7047 states to 7047 states and 9855 transitions. [2022-01-10 07:10:31,532 INFO L78 Accepts]: Start accepts. Automaton has 7047 states and 9855 transitions. Word has length 70 [2022-01-10 07:10:31,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:31,533 INFO L470 AbstractCegarLoop]: Abstraction has 7047 states and 9855 transitions. [2022-01-10 07:10:31,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 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 07:10:31,533 INFO L276 IsEmpty]: Start isEmpty. Operand 7047 states and 9855 transitions. [2022-01-10 07:10:31,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 07:10:31,537 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:31,537 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] [2022-01-10 07:10:31,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-01-10 07:10:31,737 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 07:10:31,738 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:31,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:31,738 INFO L85 PathProgramCache]: Analyzing trace with hash 299769494, now seen corresponding path program 1 times [2022-01-10 07:10:31,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:31,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [808424894] [2022-01-10 07:10:31,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:31,738 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:31,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:31,739 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 07:10:31,740 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 07:10:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:31,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:10:31,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:31,902 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 07:10:31,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:31,902 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:31,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [808424894] [2022-01-10 07:10:31,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [808424894] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:31,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:31,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:10:31,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833991856] [2022-01-10 07:10:31,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:31,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:10:31,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:31,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:10:31,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:10:31,903 INFO L87 Difference]: Start difference. First operand 7047 states and 9855 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 07:10:32,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:32,837 INFO L93 Difference]: Finished difference Result 15169 states and 21411 transitions. [2022-01-10 07:10:32,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:10:32,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-01-10 07:10:32,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:32,857 INFO L225 Difference]: With dead ends: 15169 [2022-01-10 07:10:32,857 INFO L226 Difference]: Without dead ends: 11985 [2022-01-10 07:10:32,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 68 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 07:10:32,864 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 189 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:32,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 422 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:10:32,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11985 states. [2022-01-10 07:10:33,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11985 to 11935. [2022-01-10 07:10:33,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11935 states, 11934 states have (on average 1.4147812971342384) internal successors, (16884), 11934 states have internal predecessors, (16884), 0 states have call successors, (0), 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 07:10:33,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11935 states to 11935 states and 16884 transitions. [2022-01-10 07:10:33,934 INFO L78 Accepts]: Start accepts. Automaton has 11935 states and 16884 transitions. Word has length 70 [2022-01-10 07:10:33,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:33,934 INFO L470 AbstractCegarLoop]: Abstraction has 11935 states and 16884 transitions. [2022-01-10 07:10:33,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 07:10:33,935 INFO L276 IsEmpty]: Start isEmpty. Operand 11935 states and 16884 transitions. [2022-01-10 07:10:33,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 07:10:33,938 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:33,939 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] [2022-01-10 07:10:33,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 07:10:34,147 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 07:10:34,148 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:34,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:34,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1905992636, now seen corresponding path program 1 times [2022-01-10 07:10:34,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:34,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817477058] [2022-01-10 07:10:34,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:34,149 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:34,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:34,150 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 07:10:34,150 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 07:10:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:34,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:10:34,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:34,541 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 07:10:34,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:34,541 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:34,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817477058] [2022-01-10 07:10:34,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [817477058] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:34,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:34,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:10:34,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29871538] [2022-01-10 07:10:34,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:34,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:10:34,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:34,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:10:34,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:10:34,543 INFO L87 Difference]: Start difference. First operand 11935 states and 16884 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 07:10:35,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:35,627 INFO L93 Difference]: Finished difference Result 14446 states and 20383 transitions. [2022-01-10 07:10:35,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:10:35,627 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-01-10 07:10:35,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:35,650 INFO L225 Difference]: With dead ends: 14446 [2022-01-10 07:10:35,650 INFO L226 Difference]: Without dead ends: 11938 [2022-01-10 07:10:35,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 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 07:10:35,660 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 76 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:35,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 409 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 47 Unchecked, 0.1s Time] [2022-01-10 07:10:35,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11938 states. [2022-01-10 07:10:36,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11938 to 11935. [2022-01-10 07:10:36,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11935 states, 11934 states have (on average 1.414697502932797) internal successors, (16883), 11934 states have internal predecessors, (16883), 0 states have call successors, (0), 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 07:10:36,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11935 states to 11935 states and 16883 transitions. [2022-01-10 07:10:36,739 INFO L78 Accepts]: Start accepts. Automaton has 11935 states and 16883 transitions. Word has length 70 [2022-01-10 07:10:36,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:36,740 INFO L470 AbstractCegarLoop]: Abstraction has 11935 states and 16883 transitions. [2022-01-10 07:10:36,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 07:10:36,740 INFO L276 IsEmpty]: Start isEmpty. Operand 11935 states and 16883 transitions. [2022-01-10 07:10:36,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 07:10:36,744 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:36,744 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] [2022-01-10 07:10:36,753 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 07:10:36,953 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 07:10:36,954 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:36,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:36,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1091209132, now seen corresponding path program 1 times [2022-01-10 07:10:36,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:36,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864326342] [2022-01-10 07:10:36,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:36,955 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:36,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:36,955 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 07:10:36,956 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 07:10:37,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:37,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:10:37,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:37,111 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 07:10:37,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:37,111 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:37,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1864326342] [2022-01-10 07:10:37,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1864326342] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:37,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:37,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:10:37,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414227357] [2022-01-10 07:10:37,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:37,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:10:37,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:37,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:10:37,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:10:37,113 INFO L87 Difference]: Start difference. First operand 11935 states and 16883 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 07:10:38,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:38,760 INFO L93 Difference]: Finished difference Result 28035 states and 39861 transitions. [2022-01-10 07:10:38,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:10:38,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-01-10 07:10:38,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:38,791 INFO L225 Difference]: With dead ends: 28035 [2022-01-10 07:10:38,791 INFO L226 Difference]: Without dead ends: 22316 [2022-01-10 07:10:38,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 68 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 07:10:38,803 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 193 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:38,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 356 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:10:38,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22316 states. [2022-01-10 07:10:40,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22316 to 22250. [2022-01-10 07:10:40,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22250 states, 22249 states have (on average 1.4229853027102342) internal successors, (31660), 22249 states have internal predecessors, (31660), 0 states have call successors, (0), 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 07:10:40,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22250 states to 22250 states and 31660 transitions. [2022-01-10 07:10:40,887 INFO L78 Accepts]: Start accepts. Automaton has 22250 states and 31660 transitions. Word has length 70 [2022-01-10 07:10:40,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:40,887 INFO L470 AbstractCegarLoop]: Abstraction has 22250 states and 31660 transitions. [2022-01-10 07:10:40,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 07:10:40,887 INFO L276 IsEmpty]: Start isEmpty. Operand 22250 states and 31660 transitions. [2022-01-10 07:10:40,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 07:10:40,893 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:40,893 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] [2022-01-10 07:10:40,904 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 07:10:41,101 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 07:10:41,102 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:41,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:41,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1234775302, now seen corresponding path program 1 times [2022-01-10 07:10:41,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:41,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2128161682] [2022-01-10 07:10:41,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:41,103 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:41,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:41,104 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 07:10:41,106 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 07:10:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:41,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:10:41,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:41,429 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 07:10:41,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:41,429 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:41,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2128161682] [2022-01-10 07:10:41,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2128161682] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:41,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:41,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:10:41,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436658280] [2022-01-10 07:10:41,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:41,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:10:41,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:41,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:10:41,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:10:41,431 INFO L87 Difference]: Start difference. First operand 22250 states and 31660 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 07:10:43,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:43,256 INFO L93 Difference]: Finished difference Result 43778 states and 62479 transitions. [2022-01-10 07:10:43,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:10:43,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-01-10 07:10:43,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:43,287 INFO L225 Difference]: With dead ends: 43778 [2022-01-10 07:10:43,287 INFO L226 Difference]: Without dead ends: 22250 [2022-01-10 07:10:43,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 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 07:10:43,310 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 23 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:43,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 589 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 87 Unchecked, 0.1s Time] [2022-01-10 07:10:43,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22250 states. [2022-01-10 07:10:45,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22250 to 22250. [2022-01-10 07:10:45,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22250 states, 22249 states have (on average 1.4229403568699717) internal successors, (31659), 22249 states have internal predecessors, (31659), 0 states have call successors, (0), 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 07:10:45,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22250 states to 22250 states and 31659 transitions. [2022-01-10 07:10:45,209 INFO L78 Accepts]: Start accepts. Automaton has 22250 states and 31659 transitions. Word has length 70 [2022-01-10 07:10:45,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:45,209 INFO L470 AbstractCegarLoop]: Abstraction has 22250 states and 31659 transitions. [2022-01-10 07:10:45,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 07:10:45,209 INFO L276 IsEmpty]: Start isEmpty. Operand 22250 states and 31659 transitions. [2022-01-10 07:10:45,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 07:10:45,214 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:45,214 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] [2022-01-10 07:10:45,225 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 07:10:45,422 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 07:10:45,423 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:45,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:45,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1540945155, now seen corresponding path program 1 times [2022-01-10 07:10:45,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:45,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [657837579] [2022-01-10 07:10:45,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:45,424 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:45,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:45,425 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 07:10:45,426 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 07:10:45,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:45,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:10:45,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:45,724 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 07:10:45,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:45,724 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:45,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [657837579] [2022-01-10 07:10:45,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [657837579] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:45,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:45,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:10:45,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078067875] [2022-01-10 07:10:45,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:45,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:10:45,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:45,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:10:45,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:10:45,726 INFO L87 Difference]: Start difference. First operand 22250 states and 31659 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 07:10:47,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:47,892 INFO L93 Difference]: Finished difference Result 30285 states and 42699 transitions. [2022-01-10 07:10:47,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:10:47,894 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-01-10 07:10:47,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:47,929 INFO L225 Difference]: With dead ends: 30285 [2022-01-10 07:10:47,929 INFO L226 Difference]: Without dead ends: 26198 [2022-01-10 07:10:47,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 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 07:10:47,937 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 357 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 158 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:47,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 570 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 158 Unchecked, 0.1s Time] [2022-01-10 07:10:47,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26198 states. [2022-01-10 07:10:49,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26198 to 22250. [2022-01-10 07:10:49,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22250 states, 22249 states have (on average 1.4228954110297092) internal successors, (31658), 22249 states have internal predecessors, (31658), 0 states have call successors, (0), 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 07:10:49,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22250 states to 22250 states and 31658 transitions. [2022-01-10 07:10:49,922 INFO L78 Accepts]: Start accepts. Automaton has 22250 states and 31658 transitions. Word has length 70 [2022-01-10 07:10:49,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:49,922 INFO L470 AbstractCegarLoop]: Abstraction has 22250 states and 31658 transitions. [2022-01-10 07:10:49,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 07:10:49,922 INFO L276 IsEmpty]: Start isEmpty. Operand 22250 states and 31658 transitions. [2022-01-10 07:10:49,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 07:10:49,926 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:49,926 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] [2022-01-10 07:10:49,941 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 07:10:50,136 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 07:10:50,136 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:50,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:50,136 INFO L85 PathProgramCache]: Analyzing trace with hash -929383419, now seen corresponding path program 1 times [2022-01-10 07:10:50,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:50,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99851287] [2022-01-10 07:10:50,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:50,137 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:50,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:50,138 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 07:10:50,139 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 07:10:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:50,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:10:50,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:50,853 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 07:10:50,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:50,853 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:50,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99851287] [2022-01-10 07:10:50,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99851287] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:50,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:50,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:10:50,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136249092] [2022-01-10 07:10:50,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:50,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:10:50,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:50,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:10:50,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:10:50,855 INFO L87 Difference]: Start difference. First operand 22250 states and 31658 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 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 07:10:52,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:52,671 INFO L93 Difference]: Finished difference Result 26374 states and 37405 transitions. [2022-01-10 07:10:52,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:10:52,671 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-01-10 07:10:52,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:52,702 INFO L225 Difference]: With dead ends: 26374 [2022-01-10 07:10:52,702 INFO L226 Difference]: Without dead ends: 22271 [2022-01-10 07:10:52,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 63 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 07:10:52,712 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 42 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 260 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:52,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 1025 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 260 Unchecked, 0.1s Time] [2022-01-10 07:10:52,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22271 states. [2022-01-10 07:10:54,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22271 to 22271. [2022-01-10 07:10:54,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22271 states, 22270 states have (on average 1.4226762460709474) internal successors, (31683), 22270 states have internal predecessors, (31683), 0 states have call successors, (0), 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 07:10:54,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22271 states to 22271 states and 31683 transitions. [2022-01-10 07:10:54,564 INFO L78 Accepts]: Start accepts. Automaton has 22271 states and 31683 transitions. Word has length 71 [2022-01-10 07:10:54,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:54,565 INFO L470 AbstractCegarLoop]: Abstraction has 22271 states and 31683 transitions. [2022-01-10 07:10:54,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 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 07:10:54,565 INFO L276 IsEmpty]: Start isEmpty. Operand 22271 states and 31683 transitions. [2022-01-10 07:10:54,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 07:10:54,568 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:54,568 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] [2022-01-10 07:10:54,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-01-10 07:10:54,768 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 07:10:54,769 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:54,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:54,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1934577252, now seen corresponding path program 1 times [2022-01-10 07:10:54,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:54,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929385057] [2022-01-10 07:10:54,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:54,770 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:54,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:54,771 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 07:10:54,771 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 07:10:54,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:54,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:10:54,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:55,284 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 07:10:55,284 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:55,284 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:55,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929385057] [2022-01-10 07:10:55,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929385057] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:55,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:55,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:10:55,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92565884] [2022-01-10 07:10:55,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:55,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:10:55,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:55,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:10:55,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:10:55,286 INFO L87 Difference]: Start difference. First operand 22271 states and 31683 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 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 07:10:57,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:57,083 INFO L93 Difference]: Finished difference Result 26265 states and 37252 transitions. [2022-01-10 07:10:57,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:10:57,084 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-01-10 07:10:57,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:57,115 INFO L225 Difference]: With dead ends: 26265 [2022-01-10 07:10:57,115 INFO L226 Difference]: Without dead ends: 22254 [2022-01-10 07:10:57,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 63 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 07:10:57,126 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 30 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 390 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:57,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 1226 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 390 Unchecked, 0.1s Time] [2022-01-10 07:10:57,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22254 states. [2022-01-10 07:10:58,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22254 to 22254. [2022-01-10 07:10:58,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22254 states, 22253 states have (on average 1.4227744573765335) internal successors, (31661), 22253 states have internal predecessors, (31661), 0 states have call successors, (0), 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 07:10:58,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22254 states to 22254 states and 31661 transitions. [2022-01-10 07:10:58,980 INFO L78 Accepts]: Start accepts. Automaton has 22254 states and 31661 transitions. Word has length 71 [2022-01-10 07:10:58,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:58,980 INFO L470 AbstractCegarLoop]: Abstraction has 22254 states and 31661 transitions. [2022-01-10 07:10:58,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 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 07:10:58,981 INFO L276 IsEmpty]: Start isEmpty. Operand 22254 states and 31661 transitions. [2022-01-10 07:10:58,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 07:10:58,984 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:58,984 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] [2022-01-10 07:10:58,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-01-10 07:10:59,185 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 07:10:59,185 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:59,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:59,186 INFO L85 PathProgramCache]: Analyzing trace with hash 408672452, now seen corresponding path program 1 times [2022-01-10 07:10:59,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:59,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1057948983] [2022-01-10 07:10:59,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:59,186 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:59,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:59,187 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 07:10:59,188 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 07:10:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:59,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:10:59,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:59,889 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 07:10:59,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:59,890 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:59,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1057948983] [2022-01-10 07:10:59,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1057948983] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:59,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:59,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:10:59,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592111938] [2022-01-10 07:10:59,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:59,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:10:59,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:59,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:10:59,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:10:59,891 INFO L87 Difference]: Start difference. First operand 22254 states and 31661 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 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 07:11:01,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:01,660 INFO L93 Difference]: Finished difference Result 26383 states and 37397 transitions. [2022-01-10 07:11:01,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:11:01,661 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-01-10 07:11:01,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:01,695 INFO L225 Difference]: With dead ends: 26383 [2022-01-10 07:11:01,695 INFO L226 Difference]: Without dead ends: 22272 [2022-01-10 07:11:01,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 63 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 07:11:01,706 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 62 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:01,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 569 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 49 Unchecked, 0.1s Time] [2022-01-10 07:11:01,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22272 states. [2022-01-10 07:11:03,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22272 to 22272. [2022-01-10 07:11:03,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22272 states, 22271 states have (on average 1.422612365856944) internal successors, (31683), 22271 states have internal predecessors, (31683), 0 states have call successors, (0), 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 07:11:03,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22272 states to 22272 states and 31683 transitions. [2022-01-10 07:11:03,537 INFO L78 Accepts]: Start accepts. Automaton has 22272 states and 31683 transitions. Word has length 71 [2022-01-10 07:11:03,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:03,537 INFO L470 AbstractCegarLoop]: Abstraction has 22272 states and 31683 transitions. [2022-01-10 07:11:03,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 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 07:11:03,538 INFO L276 IsEmpty]: Start isEmpty. Operand 22272 states and 31683 transitions. [2022-01-10 07:11:03,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 07:11:03,542 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:03,542 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] [2022-01-10 07:11:03,548 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 07:11:03,742 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 07:11:03,743 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:03,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:03,743 INFO L85 PathProgramCache]: Analyzing trace with hash 2084724005, now seen corresponding path program 1 times [2022-01-10 07:11:03,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:03,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1639124954] [2022-01-10 07:11:03,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:03,743 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:03,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:03,744 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 07:11:03,745 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 07:11:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:03,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:11:03,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:04,518 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 07:11:04,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:04,518 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:04,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1639124954] [2022-01-10 07:11:04,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1639124954] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:04,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:04,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:11:04,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522333866] [2022-01-10 07:11:04,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:04,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:11:04,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:04,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:11:04,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:11:04,520 INFO L87 Difference]: Start difference. First operand 22272 states and 31683 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 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 07:11:06,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:06,296 INFO L93 Difference]: Finished difference Result 26281 states and 37252 transitions. [2022-01-10 07:11:06,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:11:06,296 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-01-10 07:11:06,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:06,325 INFO L225 Difference]: With dead ends: 26281 [2022-01-10 07:11:06,325 INFO L226 Difference]: Without dead ends: 22258 [2022-01-10 07:11:06,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 63 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 07:11:06,343 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 70 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:06,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 588 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 45 Unchecked, 0.1s Time] [2022-01-10 07:11:06,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22258 states. [2022-01-10 07:11:08,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22258 to 22258. [2022-01-10 07:11:08,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22258 states, 22257 states have (on average 1.42274340656872) internal successors, (31666), 22257 states have internal predecessors, (31666), 0 states have call successors, (0), 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 07:11:08,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22258 states to 22258 states and 31666 transitions. [2022-01-10 07:11:08,215 INFO L78 Accepts]: Start accepts. Automaton has 22258 states and 31666 transitions. Word has length 71 [2022-01-10 07:11:08,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:08,215 INFO L470 AbstractCegarLoop]: Abstraction has 22258 states and 31666 transitions. [2022-01-10 07:11:08,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 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 07:11:08,216 INFO L276 IsEmpty]: Start isEmpty. Operand 22258 states and 31666 transitions. [2022-01-10 07:11:08,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 07:11:08,219 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:08,219 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] [2022-01-10 07:11:08,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2022-01-10 07:11:08,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:08,420 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:08,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:08,420 INFO L85 PathProgramCache]: Analyzing trace with hash 513850443, now seen corresponding path program 1 times [2022-01-10 07:11:08,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:08,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957862374] [2022-01-10 07:11:08,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:08,421 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:08,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:08,422 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:08,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-01-10 07:11:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:08,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:11:08,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:08,600 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 07:11:08,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:08,601 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:08,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957862374] [2022-01-10 07:11:08,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957862374] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:08,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:08,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:11:08,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066378316] [2022-01-10 07:11:08,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:08,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:11:08,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:08,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:11:08,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:11:08,604 INFO L87 Difference]: Start difference. First operand 22258 states and 31666 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 07:11:11,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:11,959 INFO L93 Difference]: Finished difference Result 52054 states and 74266 transitions. [2022-01-10 07:11:11,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:11:11,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-01-10 07:11:11,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:12,030 INFO L225 Difference]: With dead ends: 52054 [2022-01-10 07:11:12,031 INFO L226 Difference]: Without dead ends: 41179 [2022-01-10 07:11:12,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 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 07:11:12,051 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 173 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:12,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 342 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:11:12,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41179 states.