/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 04:21:36,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 04:21:36,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 04:21:36,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 04:21:36,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 04:21:36,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 04:21:36,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 04:21:36,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 04:21:36,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 04:21:36,784 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 04:21:36,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 04:21:36,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 04:21:36,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 04:21:36,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 04:21:36,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 04:21:36,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 04:21:36,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 04:21:36,798 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 04:21:36,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 04:21:36,799 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 04:21:36,804 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 04:21:36,826 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 04:21:36,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 04:21:36,827 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 04:21:36,830 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 04:21:36,831 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 04:21:36,831 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 04:21:36,832 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 04:21:36,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 04:21:36,832 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 04:21:36,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 04:21:36,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 04:21:36,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 04:21:36,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 04:21:36,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 04:21:36,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 04:21:36,834 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 04:21:36,834 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 04:21:36,834 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 04:21:36,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 04:21:36,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 04:21:36,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 04:21:36,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 04:21:36,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 04:21:36,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:21:36,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 04:21:36,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 04:21:36,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 04:21:36,836 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 04:21:36,836 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 04:21:36,836 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 04:21:36,836 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 04:21:36,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 04:21:36,837 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 04:21:36,837 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 04:21:37,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 04:21:37,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 04:21:37,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 04:21:37,087 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 04:21:37,088 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 04:21:37,089 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label30.c [2022-01-10 04:21:37,148 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85ba02d27/c4bc7a45c3134ace8a88ae0535a4d3af/FLAG058bfb73e [2022-01-10 04:21:37,698 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 04:21:37,699 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label30.c [2022-01-10 04:21:37,720 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85ba02d27/c4bc7a45c3134ace8a88ae0535a4d3af/FLAG058bfb73e [2022-01-10 04:21:38,129 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85ba02d27/c4bc7a45c3134ace8a88ae0535a4d3af [2022-01-10 04:21:38,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 04:21:38,132 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 04:21:38,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 04:21:38,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 04:21:38,136 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 04:21:38,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:21:38" (1/1) ... [2022-01-10 04:21:38,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@819aaa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:38, skipping insertion in model container [2022-01-10 04:21:38,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:21:38" (1/1) ... [2022-01-10 04:21:38,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 04:21:38,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:21:38,643 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label30.c[57849,57862] [2022-01-10 04:21:38,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:21:38,678 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 04:21:38,976 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label30.c[57849,57862] [2022-01-10 04:21:38,989 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:21:39,005 INFO L208 MainTranslator]: Completed translation [2022-01-10 04:21:39,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:39 WrapperNode [2022-01-10 04:21:39,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 04:21:39,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 04:21:39,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 04:21:39,007 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 04:21:39,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:39" (1/1) ... [2022-01-10 04:21:39,041 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:39" (1/1) ... [2022-01-10 04:21:39,126 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1769 [2022-01-10 04:21:39,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 04:21:39,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 04:21:39,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 04:21:39,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 04:21:39,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:39" (1/1) ... [2022-01-10 04:21:39,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:39" (1/1) ... [2022-01-10 04:21:39,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:39" (1/1) ... [2022-01-10 04:21:39,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:39" (1/1) ... [2022-01-10 04:21:39,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:39" (1/1) ... [2022-01-10 04:21:39,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:39" (1/1) ... [2022-01-10 04:21:39,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:39" (1/1) ... [2022-01-10 04:21:39,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 04:21:39,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 04:21:39,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 04:21:39,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 04:21:39,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:39" (1/1) ... [2022-01-10 04:21:39,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:21:39,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 04:21:39,301 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 04:21:39,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 04:21:39,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 04:21:39,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 04:21:39,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 04:21:39,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 04:21:39,452 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 04:21:39,453 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 04:21:41,150 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 04:21:41,159 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 04:21:41,162 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 04:21:41,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:21:41 BoogieIcfgContainer [2022-01-10 04:21:41,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 04:21:41,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 04:21:41,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 04:21:41,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 04:21:41,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:21:38" (1/3) ... [2022-01-10 04:21:41,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f625545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:21:41, skipping insertion in model container [2022-01-10 04:21:41,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:21:39" (2/3) ... [2022-01-10 04:21:41,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f625545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:21:41, skipping insertion in model container [2022-01-10 04:21:41,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:21:41" (3/3) ... [2022-01-10 04:21:41,172 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label30.c [2022-01-10 04:21:41,176 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 04:21:41,176 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 04:21:41,232 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 04:21:41,241 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 04:21:41,242 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 04:21:41,268 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:21:41,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 04:21:41,283 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:21:41,284 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:21:41,284 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:21:41,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:21:41,289 INFO L85 PathProgramCache]: Analyzing trace with hash 174616531, now seen corresponding path program 1 times [2022-01-10 04:21:41,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:21:41,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [962846090] [2022-01-10 04:21:41,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:21:41,304 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:21:41,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:21:41,307 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:21:41,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 04:21:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:21:41,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-10 04:21:41,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:21:58,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:21:58,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:21:58,339 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:21:58,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [962846090] [2022-01-10 04:21:58,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [962846090] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:21:58,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:21:58,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 04:21:58,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095403405] [2022-01-10 04:21:58,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:21:58,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 04:21:58,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:21:58,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 04:21:58,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-10 04:21:58,375 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 10 states, 10 states have (on average 17.5) internal successors, (175), 9 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:04,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:22:04,712 INFO L93 Difference]: Finished difference Result 1133 states and 2085 transitions. [2022-01-10 04:22:04,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 04:22:04,714 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.5) internal successors, (175), 9 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-10 04:22:04,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:22:04,730 INFO L225 Difference]: With dead ends: 1133 [2022-01-10 04:22:04,730 INFO L226 Difference]: Without dead ends: 761 [2022-01-10 04:22:04,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2022-01-10 04:22:04,737 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 1643 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 4261 mSolverCounterSat, 366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1643 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 4627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 4261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-01-10 04:22:04,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1643 Valid, 451 Invalid, 4627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [366 Valid, 4261 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-01-10 04:22:04,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2022-01-10 04:22:04,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 758. [2022-01-10 04:22:04,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 757 states have (on average 1.272126816380449) internal successors, (963), 757 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:04,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 963 transitions. [2022-01-10 04:22:04,807 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 963 transitions. Word has length 175 [2022-01-10 04:22:04,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:22:04,808 INFO L470 AbstractCegarLoop]: Abstraction has 758 states and 963 transitions. [2022-01-10 04:22:04,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.5) internal successors, (175), 9 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:04,808 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 963 transitions. [2022-01-10 04:22:04,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-01-10 04:22:04,815 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:22:04,815 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:22:04,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 04:22:05,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:22:05,022 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:22:05,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:22:05,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1621460536, now seen corresponding path program 1 times [2022-01-10 04:22:05,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:22:05,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1797589212] [2022-01-10 04:22:05,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:22:05,026 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:22:05,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:22:05,027 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:22:05,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 04:22:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:22:05,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-10 04:22:05,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:22:18,436 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:22:18,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:22:18,437 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:22:18,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1797589212] [2022-01-10 04:22:18,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1797589212] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:22:18,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:22:18,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 04:22:18,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077235869] [2022-01-10 04:22:18,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:22:18,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 04:22:18,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:22:18,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 04:22:18,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-01-10 04:22:18,440 INFO L87 Difference]: Start difference. First operand 758 states and 963 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:21,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:22:21,195 INFO L93 Difference]: Finished difference Result 1136 states and 1632 transitions. [2022-01-10 04:22:21,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 04:22:21,195 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 182 [2022-01-10 04:22:21,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:22:21,199 INFO L225 Difference]: With dead ends: 1136 [2022-01-10 04:22:21,199 INFO L226 Difference]: Without dead ends: 899 [2022-01-10 04:22:21,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-01-10 04:22:21,202 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 578 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 2724 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 2858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 2724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 04:22:21,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 295 Invalid, 2858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 2724 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 04:22:21,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2022-01-10 04:22:21,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 899. [2022-01-10 04:22:21,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 898 states have (on average 1.2360801781737194) internal successors, (1110), 898 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:21,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1110 transitions. [2022-01-10 04:22:21,232 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1110 transitions. Word has length 182 [2022-01-10 04:22:21,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:22:21,233 INFO L470 AbstractCegarLoop]: Abstraction has 899 states and 1110 transitions. [2022-01-10 04:22:21,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:21,234 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1110 transitions. [2022-01-10 04:22:21,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 04:22:21,241 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:22:21,241 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:22:21,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 04:22:21,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:22:21,452 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:22:21,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:22:21,453 INFO L85 PathProgramCache]: Analyzing trace with hash -893466295, now seen corresponding path program 1 times [2022-01-10 04:22:21,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:22:21,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1719326656] [2022-01-10 04:22:21,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:22:21,456 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:22:21,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:22:21,457 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:22:21,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 04:22:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:22:21,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:22:21,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:22:21,881 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 04:22:21,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:22:21,882 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:22:21,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1719326656] [2022-01-10 04:22:21,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1719326656] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:22:21,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:22:21,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:22:21,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080782250] [2022-01-10 04:22:21,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:22:21,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:22:21,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:22:21,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:22:21,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:22:21,884 INFO L87 Difference]: Start difference. First operand 899 states and 1110 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:22,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:22:22,761 INFO L93 Difference]: Finished difference Result 1762 states and 2357 transitions. [2022-01-10 04:22:22,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:22:22,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 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 190 [2022-01-10 04:22:22,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:22:22,766 INFO L225 Difference]: With dead ends: 1762 [2022-01-10 04:22:22,766 INFO L226 Difference]: Without dead ends: 1322 [2022-01-10 04:22:22,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:22:22,768 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 101 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 04:22:22,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 340 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 04:22:22,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2022-01-10 04:22:22,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1320. [2022-01-10 04:22:22,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1319 states have (on average 1.2562547384382108) internal successors, (1657), 1319 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:22,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1657 transitions. [2022-01-10 04:22:22,793 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1657 transitions. Word has length 190 [2022-01-10 04:22:22,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:22:22,793 INFO L470 AbstractCegarLoop]: Abstraction has 1320 states and 1657 transitions. [2022-01-10 04:22:22,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:22,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1657 transitions. [2022-01-10 04:22:22,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-01-10 04:22:22,797 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:22:22,797 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:22:22,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 04:22:23,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:22:23,006 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:22:23,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:22:23,007 INFO L85 PathProgramCache]: Analyzing trace with hash 432408955, now seen corresponding path program 1 times [2022-01-10 04:22:23,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:22:23,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [113680698] [2022-01-10 04:22:23,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:22:23,009 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:22:23,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:22:23,010 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:22:23,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 04:22:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:22:23,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:22:23,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:22:23,323 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 04:22:23,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:22:23,323 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:22:23,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [113680698] [2022-01-10 04:22:23,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [113680698] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:22:23,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:22:23,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:22:23,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408735218] [2022-01-10 04:22:23,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:22:23,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:22:23,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:22:23,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:22:23,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:22:23,325 INFO L87 Difference]: Start difference. First operand 1320 states and 1657 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:24,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:22:24,432 INFO L93 Difference]: Finished difference Result 2591 states and 3482 transitions. [2022-01-10 04:22:24,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:22:24,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 196 [2022-01-10 04:22:24,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:22:24,438 INFO L225 Difference]: With dead ends: 2591 [2022-01-10 04:22:24,439 INFO L226 Difference]: Without dead ends: 1730 [2022-01-10 04:22:24,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:22:24,441 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 237 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:22:24,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 389 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 04:22:24,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2022-01-10 04:22:24,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1728. [2022-01-10 04:22:24,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1728 states, 1727 states have (on average 1.2281412854661262) internal successors, (2121), 1727 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:24,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 2121 transitions. [2022-01-10 04:22:24,470 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 2121 transitions. Word has length 196 [2022-01-10 04:22:24,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:22:24,471 INFO L470 AbstractCegarLoop]: Abstraction has 1728 states and 2121 transitions. [2022-01-10 04:22:24,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:24,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 2121 transitions. [2022-01-10 04:22:24,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-01-10 04:22:24,474 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:22:24,474 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:22:24,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 04:22:24,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:22:24,685 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:22:24,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:22:24,686 INFO L85 PathProgramCache]: Analyzing trace with hash 493697199, now seen corresponding path program 1 times [2022-01-10 04:22:24,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:22:24,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836002774] [2022-01-10 04:22:24,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:22:24,690 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:22:24,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:22:24,691 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:22:24,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 04:22:24,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:22:24,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:22:24,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:22:25,112 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 04:22:25,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:22:25,113 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:22:25,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1836002774] [2022-01-10 04:22:25,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1836002774] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:22:25,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:22:25,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:22:25,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689118614] [2022-01-10 04:22:25,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:22:25,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:22:25,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:22:25,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:22:25,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:22:25,115 INFO L87 Difference]: Start difference. First operand 1728 states and 2121 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:26,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:22:26,027 INFO L93 Difference]: Finished difference Result 3405 states and 4421 transitions. [2022-01-10 04:22:26,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:22:26,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 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 200 [2022-01-10 04:22:26,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:22:26,038 INFO L225 Difference]: With dead ends: 3405 [2022-01-10 04:22:26,038 INFO L226 Difference]: Without dead ends: 2542 [2022-01-10 04:22:26,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:22:26,041 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 222 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 04:22:26,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 412 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 04:22:26,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2022-01-10 04:22:26,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 2542. [2022-01-10 04:22:26,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2542 states, 2541 states have (on average 1.2022825659189296) internal successors, (3055), 2541 states have internal predecessors, (3055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:26,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2542 states to 2542 states and 3055 transitions. [2022-01-10 04:22:26,082 INFO L78 Accepts]: Start accepts. Automaton has 2542 states and 3055 transitions. Word has length 200 [2022-01-10 04:22:26,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:22:26,083 INFO L470 AbstractCegarLoop]: Abstraction has 2542 states and 3055 transitions. [2022-01-10 04:22:26,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:26,083 INFO L276 IsEmpty]: Start isEmpty. Operand 2542 states and 3055 transitions. [2022-01-10 04:22:26,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-01-10 04:22:26,087 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:22:26,087 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:22:26,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 04:22:26,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:22:26,297 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:22:26,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:22:26,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1607308692, now seen corresponding path program 1 times [2022-01-10 04:22:26,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:22:26,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540734609] [2022-01-10 04:22:26,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:22:26,299 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:22:26,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:22:26,300 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:22:26,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 04:22:26,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:22:26,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:22:26,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:22:26,642 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 04:22:26,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:22:26,643 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:22:26,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540734609] [2022-01-10 04:22:26,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540734609] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:22:26,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:22:26,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:22:26,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511971208] [2022-01-10 04:22:26,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:22:26,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:22:26,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:22:26,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:22:26,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:22:26,644 INFO L87 Difference]: Start difference. First operand 2542 states and 3055 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:27,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:22:27,527 INFO L93 Difference]: Finished difference Result 6467 states and 7938 transitions. [2022-01-10 04:22:27,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:22:27,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 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 202 [2022-01-10 04:22:27,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:22:27,540 INFO L225 Difference]: With dead ends: 6467 [2022-01-10 04:22:27,540 INFO L226 Difference]: Without dead ends: 4384 [2022-01-10 04:22:27,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:22:27,545 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 215 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 04:22:27,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 382 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 04:22:27,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4384 states. [2022-01-10 04:22:27,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4384 to 4379. [2022-01-10 04:22:27,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4379 states, 4378 states have (on average 1.172910004568296) internal successors, (5135), 4378 states have internal predecessors, (5135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:27,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4379 states to 4379 states and 5135 transitions. [2022-01-10 04:22:27,628 INFO L78 Accepts]: Start accepts. Automaton has 4379 states and 5135 transitions. Word has length 202 [2022-01-10 04:22:27,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:22:27,629 INFO L470 AbstractCegarLoop]: Abstraction has 4379 states and 5135 transitions. [2022-01-10 04:22:27,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:27,629 INFO L276 IsEmpty]: Start isEmpty. Operand 4379 states and 5135 transitions. [2022-01-10 04:22:27,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-01-10 04:22:27,635 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:22:27,635 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:22:27,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 04:22:27,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:22:27,845 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:22:27,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:22:27,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1553834371, now seen corresponding path program 1 times [2022-01-10 04:22:27,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:22:27,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1616320192] [2022-01-10 04:22:27,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:22:27,848 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:22:27,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:22:27,849 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:22:27,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 04:22:27,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:22:27,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:22:27,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:22:28,326 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 04:22:28,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:22:28,327 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:22:28,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1616320192] [2022-01-10 04:22:28,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1616320192] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:22:28,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:22:28,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:22:28,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635575264] [2022-01-10 04:22:28,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:22:28,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:22:28,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:22:28,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:22:28,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:22:28,329 INFO L87 Difference]: Start difference. First operand 4379 states and 5135 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:29,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:22:29,278 INFO L93 Difference]: Finished difference Result 9112 states and 10994 transitions. [2022-01-10 04:22:29,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:22:29,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 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 216 [2022-01-10 04:22:29,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:22:29,292 INFO L225 Difference]: With dead ends: 9112 [2022-01-10 04:22:29,292 INFO L226 Difference]: Without dead ends: 4989 [2022-01-10 04:22:29,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:22:29,298 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 187 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 04:22:29,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 215 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 04:22:29,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4989 states. [2022-01-10 04:22:29,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4989 to 4988. [2022-01-10 04:22:29,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4988 states, 4987 states have (on average 1.1548024864648085) internal successors, (5759), 4987 states have internal predecessors, (5759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:29,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4988 states to 4988 states and 5759 transitions. [2022-01-10 04:22:29,371 INFO L78 Accepts]: Start accepts. Automaton has 4988 states and 5759 transitions. Word has length 216 [2022-01-10 04:22:29,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:22:29,371 INFO L470 AbstractCegarLoop]: Abstraction has 4988 states and 5759 transitions. [2022-01-10 04:22:29,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:29,372 INFO L276 IsEmpty]: Start isEmpty. Operand 4988 states and 5759 transitions. [2022-01-10 04:22:29,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-01-10 04:22:29,380 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:22:29,380 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:22:29,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-01-10 04:22:29,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:22:29,592 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:22:29,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:22:29,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1398048645, now seen corresponding path program 1 times [2022-01-10 04:22:29,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:22:29,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1340082294] [2022-01-10 04:22:29,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:22:29,594 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:22:29,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:22:29,595 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:22:29,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 04:22:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:22:29,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:22:29,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:22:30,029 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 04:22:30,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:22:30,030 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:22:30,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1340082294] [2022-01-10 04:22:30,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1340082294] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:22:30,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:22:30,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:22:30,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412400208] [2022-01-10 04:22:30,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:22:30,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:22:30,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:22:30,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:22:30,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:22:30,032 INFO L87 Difference]: Start difference. First operand 4988 states and 5759 transitions. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:31,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:22:31,524 INFO L93 Difference]: Finished difference Result 13196 states and 15575 transitions. [2022-01-10 04:22:31,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:22:31,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 231 [2022-01-10 04:22:31,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:22:31,548 INFO L225 Difference]: With dead ends: 13196 [2022-01-10 04:22:31,548 INFO L226 Difference]: Without dead ends: 8464 [2022-01-10 04:22:31,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:22:31,555 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 413 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 04:22:31,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 204 Invalid, 1337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 04:22:31,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8464 states. [2022-01-10 04:22:31,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8464 to 7223. [2022-01-10 04:22:31,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7223 states, 7222 states have (on average 1.1654666297424536) internal successors, (8417), 7222 states have internal predecessors, (8417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:31,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7223 states to 7223 states and 8417 transitions. [2022-01-10 04:22:31,698 INFO L78 Accepts]: Start accepts. Automaton has 7223 states and 8417 transitions. Word has length 231 [2022-01-10 04:22:31,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:22:31,698 INFO L470 AbstractCegarLoop]: Abstraction has 7223 states and 8417 transitions. [2022-01-10 04:22:31,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:31,699 INFO L276 IsEmpty]: Start isEmpty. Operand 7223 states and 8417 transitions. [2022-01-10 04:22:31,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-01-10 04:22:31,709 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:22:31,710 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:22:31,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 04:22:31,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:22:31,919 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:22:31,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:22:31,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1315121314, now seen corresponding path program 1 times [2022-01-10 04:22:31,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:22:31,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [118077260] [2022-01-10 04:22:31,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:22:31,922 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:22:31,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:22:31,923 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:22:31,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 04:22:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:22:32,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 04:22:32,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:22:32,644 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 04:22:32,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:22:32,645 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:22:32,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [118077260] [2022-01-10 04:22:32,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [118077260] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:22:32,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:22:32,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 04:22:32,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755793851] [2022-01-10 04:22:32,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:22:32,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 04:22:32,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:22:32,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 04:22:32,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:22:32,646 INFO L87 Difference]: Start difference. First operand 7223 states and 8417 transitions. Second operand has 5 states, 5 states have (on average 50.8) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:34,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:22:34,056 INFO L93 Difference]: Finished difference Result 27708 states and 32395 transitions. [2022-01-10 04:22:34,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 04:22:34,057 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 50.8) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 266 [2022-01-10 04:22:34,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:22:34,097 INFO L225 Difference]: With dead ends: 27708 [2022-01-10 04:22:34,097 INFO L226 Difference]: Without dead ends: 20741 [2022-01-10 04:22:34,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:22:34,108 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 1098 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 04:22:34,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1098 Valid, 717 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 04:22:34,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20741 states. [2022-01-10 04:22:34,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20741 to 20735. [2022-01-10 04:22:34,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20735 states, 20734 states have (on average 1.1662004437156361) internal successors, (24180), 20734 states have internal predecessors, (24180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:34,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20735 states to 20735 states and 24180 transitions. [2022-01-10 04:22:34,359 INFO L78 Accepts]: Start accepts. Automaton has 20735 states and 24180 transitions. Word has length 266 [2022-01-10 04:22:34,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:22:34,359 INFO L470 AbstractCegarLoop]: Abstraction has 20735 states and 24180 transitions. [2022-01-10 04:22:34,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.8) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:34,360 INFO L276 IsEmpty]: Start isEmpty. Operand 20735 states and 24180 transitions. [2022-01-10 04:22:34,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-01-10 04:22:34,417 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:22:34,417 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:22:34,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 04:22:34,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:22:34,632 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:22:34,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:22:34,632 INFO L85 PathProgramCache]: Analyzing trace with hash 361402452, now seen corresponding path program 1 times [2022-01-10 04:22:34,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:22:34,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640684979] [2022-01-10 04:22:34,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:22:34,634 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:22:34,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:22:34,635 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:22:34,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 04:22:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:22:34,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:22:34,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:22:35,171 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-10 04:22:35,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:22:35,171 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:22:35,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640684979] [2022-01-10 04:22:35,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640684979] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:22:35,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:22:35,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:22:35,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203876574] [2022-01-10 04:22:35,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:22:35,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:22:35,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:22:35,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:22:35,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:22:35,173 INFO L87 Difference]: Start difference. First operand 20735 states and 24180 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:36,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:22:36,211 INFO L93 Difference]: Finished difference Result 51391 states and 60001 transitions. [2022-01-10 04:22:36,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:22:36,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 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 269 [2022-01-10 04:22:36,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:22:36,265 INFO L225 Difference]: With dead ends: 51391 [2022-01-10 04:22:36,266 INFO L226 Difference]: Without dead ends: 30697 [2022-01-10 04:22:36,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:22:36,285 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 169 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 04:22:36,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 354 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 04:22:36,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30697 states. [2022-01-10 04:22:36,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30697 to 30670. [2022-01-10 04:22:36,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30670 states, 30669 states have (on average 1.1325116567217712) internal successors, (34733), 30669 states have internal predecessors, (34733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:36,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30670 states to 30670 states and 34733 transitions. [2022-01-10 04:22:36,698 INFO L78 Accepts]: Start accepts. Automaton has 30670 states and 34733 transitions. Word has length 269 [2022-01-10 04:22:36,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:22:36,699 INFO L470 AbstractCegarLoop]: Abstraction has 30670 states and 34733 transitions. [2022-01-10 04:22:36,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:22:36,699 INFO L276 IsEmpty]: Start isEmpty. Operand 30670 states and 34733 transitions. [2022-01-10 04:22:36,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-01-10 04:22:36,721 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:22:36,721 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:22:36,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 04:22:36,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:22:36,931 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:22:36,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:22:36,931 INFO L85 PathProgramCache]: Analyzing trace with hash 936087901, now seen corresponding path program 1 times [2022-01-10 04:22:36,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:22:36,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478632681] [2022-01-10 04:22:36,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:22:36,934 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:22:36,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:22:36,934 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:22:36,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 04:22:37,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:22:37,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:22:37,059 INFO L286 TraceCheckSpWp]: Computing forward predicates...