/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/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 08:01:45,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 08:01:45,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 08:01:45,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 08:01:45,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 08:01:45,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 08:01:45,466 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 08:01:45,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 08:01:45,469 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 08:01:45,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 08:01:45,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 08:01:45,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 08:01:45,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 08:01:45,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 08:01:45,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 08:01:45,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 08:01:45,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 08:01:45,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 08:01:45,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 08:01:45,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 08:01:45,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 08:01:45,487 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 08:01:45,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 08:01:45,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 08:01:45,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 08:01:45,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 08:01:45,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 08:01:45,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 08:01:45,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 08:01:45,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 08:01:45,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 08:01:45,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 08:01:45,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 08:01:45,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 08:01:45,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 08:01:45,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 08:01:45,497 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 08:01:45,523 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 08:01:45,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 08:01:45,524 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 08:01:45,524 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 08:01:45,524 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 08:01:45,524 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 08:01:45,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 08:01:45,525 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 08:01:45,525 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 08:01:45,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 08:01:45,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 08:01:45,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 08:01:45,526 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 08:01:45,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 08:01:45,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 08:01:45,526 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 08:01:45,526 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 08:01:45,526 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 08:01:45,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 08:01:45,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 08:01:45,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 08:01:45,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 08:01:45,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 08:01:45,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:01:45,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 08:01:45,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 08:01:45,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 08:01:45,528 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 08:01:45,528 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 08:01:45,528 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 08:01:45,528 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 08:01:45,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 08:01:45,529 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 08:01:45,529 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 08:01:45,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 08:01:45,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 08:01:45,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 08:01:45,727 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 08:01:45,727 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 08:01:45,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c [2022-01-10 08:01:45,774 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4b36193d/05bad81bb5b24301855a72ea01751e6b/FLAG2dc0ae8a8 [2022-01-10 08:01:46,298 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 08:01:46,299 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c [2022-01-10 08:01:46,358 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4b36193d/05bad81bb5b24301855a72ea01751e6b/FLAG2dc0ae8a8 [2022-01-10 08:01:46,513 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4b36193d/05bad81bb5b24301855a72ea01751e6b [2022-01-10 08:01:46,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 08:01:46,516 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 08:01:46,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 08:01:46,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 08:01:46,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 08:01:46,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:01:46" (1/1) ... [2022-01-10 08:01:46,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@234a4980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:01:46, skipping insertion in model container [2022-01-10 08:01:46,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:01:46" (1/1) ... [2022-01-10 08:01:46,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 08:01:46,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 08:01:46,810 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c[8653,8666] [2022-01-10 08:01:46,845 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c[14208,14221] [2022-01-10 08:01:47,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:01:47,412 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 08:01:47,448 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c[8653,8666] [2022-01-10 08:01:47,455 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c[14208,14221] [2022-01-10 08:01:47,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:01:47,804 INFO L208 MainTranslator]: Completed translation [2022-01-10 08:01:47,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:01:47 WrapperNode [2022-01-10 08:01:47,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 08:01:47,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 08:01:47,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 08:01:47,805 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 08:01:47,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:01:47" (1/1) ... [2022-01-10 08:01:47,843 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:01:47" (1/1) ... [2022-01-10 08:01:47,945 INFO L137 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 5010 [2022-01-10 08:01:47,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 08:01:47,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 08:01:47,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 08:01:47,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 08:01:47,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:01:47" (1/1) ... [2022-01-10 08:01:47,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:01:47" (1/1) ... [2022-01-10 08:01:47,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:01:47" (1/1) ... [2022-01-10 08:01:47,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:01:47" (1/1) ... [2022-01-10 08:01:48,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:01:47" (1/1) ... [2022-01-10 08:01:48,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:01:47" (1/1) ... [2022-01-10 08:01:48,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:01:47" (1/1) ... [2022-01-10 08:01:48,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 08:01:48,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 08:01:48,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 08:01:48,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 08:01:48,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:01:47" (1/1) ... [2022-01-10 08:01:48,144 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:01:48,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:01:48,163 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 08:01:48,176 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 08:01:48,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 08:01:48,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 08:01:48,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 08:01:48,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 08:01:48,308 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 08:01:48,310 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 08:02:11,805 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 08:02:11,822 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 08:02:11,823 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 08:02:11,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:02:11 BoogieIcfgContainer [2022-01-10 08:02:11,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 08:02:11,827 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 08:02:11,827 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 08:02:11,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 08:02:11,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:01:46" (1/3) ... [2022-01-10 08:02:11,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c9277ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:02:11, skipping insertion in model container [2022-01-10 08:02:11,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:01:47" (2/3) ... [2022-01-10 08:02:11,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c9277ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:02:11, skipping insertion in model container [2022-01-10 08:02:11,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:02:11" (3/3) ... [2022-01-10 08:02:11,832 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c [2022-01-10 08:02:11,836 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 08:02:11,836 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 08:02:11,873 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 08:02:11,878 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 08:02:11,878 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 08:02:11,898 INFO L276 IsEmpty]: Start isEmpty. Operand has 893 states, 890 states have (on average 1.902247191011236) internal successors, (1693), 892 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:11,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-10 08:02:11,904 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:02:11,904 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] [2022-01-10 08:02:11,905 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:02:11,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:02:11,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1675876582, now seen corresponding path program 1 times [2022-01-10 08:02:11,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:02:11,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754603869] [2022-01-10 08:02:11,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:02:11,918 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:02:11,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:02:11,920 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 08:02:11,923 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 08:02:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:02:12,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 08:02:12,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:02:12,137 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 08:02:12,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:02:12,137 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:02:12,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754603869] [2022-01-10 08:02:12,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754603869] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:02:12,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:02:12,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:02:12,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865064005] [2022-01-10 08:02:12,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:02:12,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 08:02:12,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:02:12,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 08:02:12,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 08:02:12,179 INFO L87 Difference]: Start difference. First operand has 893 states, 890 states have (on average 1.902247191011236) internal successors, (1693), 892 states have internal predecessors, (1693), 0 states have call successors, (0), 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 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:12,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:02:12,258 INFO L93 Difference]: Finished difference Result 1757 states and 3332 transitions. [2022-01-10 08:02:12,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 08:02:12,260 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-01-10 08:02:12,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:02:12,275 INFO L225 Difference]: With dead ends: 1757 [2022-01-10 08:02:12,278 INFO L226 Difference]: Without dead ends: 827 [2022-01-10 08:02:12,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 08:02:12,287 INFO L933 BasicCegarLoop]: 1627 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:02:12,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1627 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:02:12,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2022-01-10 08:02:12,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 827. [2022-01-10 08:02:12,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 825 states have (on average 1.8909090909090909) internal successors, (1560), 826 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:12,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1560 transitions. [2022-01-10 08:02:12,371 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1560 transitions. Word has length 30 [2022-01-10 08:02:12,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:02:12,371 INFO L470 AbstractCegarLoop]: Abstraction has 827 states and 1560 transitions. [2022-01-10 08:02:12,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:12,372 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1560 transitions. [2022-01-10 08:02:12,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-10 08:02:12,373 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:02:12,373 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] [2022-01-10 08:02:12,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 08:02:12,580 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 08:02:12,580 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:02:12,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:02:12,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1541863076, now seen corresponding path program 1 times [2022-01-10 08:02:12,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:02:12,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [156111684] [2022-01-10 08:02:12,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:02:12,581 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:02:12,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:02:12,583 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 08:02:12,584 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 08:02:12,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:02:12,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:02:12,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:02:12,802 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 08:02:12,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:02:12,803 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:02:12,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [156111684] [2022-01-10 08:02:12,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [156111684] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:02:12,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:02:12,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:02:12,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443864256] [2022-01-10 08:02:12,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:02:12,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:02:12,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:02:12,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:02:12,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:02:12,805 INFO L87 Difference]: Start difference. First operand 827 states and 1560 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:12,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:02:12,929 INFO L93 Difference]: Finished difference Result 919 states and 1702 transitions. [2022-01-10 08:02:12,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:02:12,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-01-10 08:02:12,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:02:12,934 INFO L225 Difference]: With dead ends: 919 [2022-01-10 08:02:12,934 INFO L226 Difference]: Without dead ends: 871 [2022-01-10 08:02:12,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:02:12,936 INFO L933 BasicCegarLoop]: 1556 mSDtfsCounter, 71 mSDsluCounter, 4640 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 6196 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:02:12,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 6196 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 08:02:12,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2022-01-10 08:02:12,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 827. [2022-01-10 08:02:12,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 825 states have (on average 1.863030303030303) internal successors, (1537), 826 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:12,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1537 transitions. [2022-01-10 08:02:12,956 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1537 transitions. Word has length 30 [2022-01-10 08:02:12,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:02:12,959 INFO L470 AbstractCegarLoop]: Abstraction has 827 states and 1537 transitions. [2022-01-10 08:02:12,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:12,963 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1537 transitions. [2022-01-10 08:02:12,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-10 08:02:12,967 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:02:12,968 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] [2022-01-10 08:02:12,976 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 08:02:13,174 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 08:02:13,175 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:02:13,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:02:13,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1620709547, now seen corresponding path program 1 times [2022-01-10 08:02:13,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:02:13,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281349005] [2022-01-10 08:02:13,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:02:13,176 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:02:13,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:02:13,177 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 08:02:13,179 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 08:02:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:02:13,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:02:13,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:02:13,391 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 08:02:13,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:02:13,391 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:02:13,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281349005] [2022-01-10 08:02:13,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281349005] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:02:13,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:02:13,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:02:13,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364542127] [2022-01-10 08:02:13,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:02:13,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:02:13,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:02:13,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:02:13,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:02:13,393 INFO L87 Difference]: Start difference. First operand 827 states and 1537 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:48,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:02:48,402 INFO L93 Difference]: Finished difference Result 2331 states and 4410 transitions. [2022-01-10 08:02:48,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:02:48,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2022-01-10 08:02:48,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:02:48,408 INFO L225 Difference]: With dead ends: 2331 [2022-01-10 08:02:48,408 INFO L226 Difference]: Without dead ends: 1578 [2022-01-10 08:02:48,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 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 08:02:48,410 INFO L933 BasicCegarLoop]: 638 mSDtfsCounter, 846 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2197 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 2861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 2197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.8s IncrementalHoareTripleChecker+Time [2022-01-10 08:02:48,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [846 Valid, 645 Invalid, 2861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 2197 Invalid, 0 Unknown, 0 Unchecked, 34.8s Time] [2022-01-10 08:02:48,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1578 states. [2022-01-10 08:02:48,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1578 to 1578. [2022-01-10 08:02:48,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1578 states, 1576 states have (on average 1.5507614213197969) internal successors, (2444), 1577 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:48,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 2444 transitions. [2022-01-10 08:02:48,434 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 2444 transitions. Word has length 48 [2022-01-10 08:02:48,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:02:48,435 INFO L470 AbstractCegarLoop]: Abstraction has 1578 states and 2444 transitions. [2022-01-10 08:02:48,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:48,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 2444 transitions. [2022-01-10 08:02:48,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 08:02:48,435 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:02:48,436 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] [2022-01-10 08:02:48,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-01-10 08:02:48,641 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 08:02:48,642 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:02:48,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:02:48,642 INFO L85 PathProgramCache]: Analyzing trace with hash 159296799, now seen corresponding path program 1 times [2022-01-10 08:02:48,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:02:48,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141322535] [2022-01-10 08:02:48,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:02:48,643 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:02:48,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:02:48,644 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 08:02:48,646 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 08:02:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:02:48,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:02:48,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:02:48,863 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 08:02:48,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:02:48,863 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:02:48,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141322535] [2022-01-10 08:02:48,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141322535] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:02:48,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:02:48,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:02:48,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619590550] [2022-01-10 08:02:48,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:02:48,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:02:48,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:02:48,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:02:48,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:02:48,865 INFO L87 Difference]: Start difference. First operand 1578 states and 2444 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:48,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:02:48,904 INFO L93 Difference]: Finished difference Result 1660 states and 2572 transitions. [2022-01-10 08:02:48,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:02:48,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-01-10 08:02:48,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:02:48,909 INFO L225 Difference]: With dead ends: 1660 [2022-01-10 08:02:48,910 INFO L226 Difference]: Without dead ends: 1616 [2022-01-10 08:02:48,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 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 08:02:48,915 INFO L933 BasicCegarLoop]: 1592 mSDtfsCounter, 1498 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:02:48,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1498 Valid, 1659 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:02:48,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2022-01-10 08:02:48,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1614. [2022-01-10 08:02:48,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1612 states have (on average 1.5514888337468982) internal successors, (2501), 1613 states have internal predecessors, (2501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:48,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 2501 transitions. [2022-01-10 08:02:48,942 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 2501 transitions. Word has length 52 [2022-01-10 08:02:48,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:02:48,942 INFO L470 AbstractCegarLoop]: Abstraction has 1614 states and 2501 transitions. [2022-01-10 08:02:48,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:48,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 2501 transitions. [2022-01-10 08:02:48,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 08:02:48,943 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:02:48,943 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] [2022-01-10 08:02:48,951 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 08:02:49,149 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 08:02:49,150 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:02:49,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:02:49,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1780734059, now seen corresponding path program 1 times [2022-01-10 08:02:49,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:02:49,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890716557] [2022-01-10 08:02:49,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:02:49,151 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:02:49,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:02:49,152 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 08:02:49,153 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 08:02:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:02:49,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:02:49,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:02:49,351 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 08:02:49,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:02:49,352 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:02:49,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [890716557] [2022-01-10 08:02:49,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [890716557] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:02:49,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:02:49,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:02:49,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395465937] [2022-01-10 08:02:49,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:02:49,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:02:49,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:02:49,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:02:49,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:02:49,359 INFO L87 Difference]: Start difference. First operand 1614 states and 2501 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:49,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:02:49,383 INFO L93 Difference]: Finished difference Result 1762 states and 2733 transitions. [2022-01-10 08:02:49,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:02:49,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-01-10 08:02:49,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:02:49,389 INFO L225 Difference]: With dead ends: 1762 [2022-01-10 08:02:49,389 INFO L226 Difference]: Without dead ends: 1682 [2022-01-10 08:02:49,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 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 08:02:49,390 INFO L933 BasicCegarLoop]: 1587 mSDtfsCounter, 1494 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:02:49,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1494 Valid, 1658 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:02:49,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2022-01-10 08:02:49,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 1680. [2022-01-10 08:02:49,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 1678 states have (on average 1.5518474374255065) internal successors, (2604), 1679 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:49,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 2604 transitions. [2022-01-10 08:02:49,420 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 2604 transitions. Word has length 52 [2022-01-10 08:02:49,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:02:49,421 INFO L470 AbstractCegarLoop]: Abstraction has 1680 states and 2604 transitions. [2022-01-10 08:02:49,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:49,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 2604 transitions. [2022-01-10 08:02:49,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 08:02:49,422 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:02:49,422 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] [2022-01-10 08:02:49,432 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 08:02:49,629 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 08:02:49,629 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:02:49,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:02:49,629 INFO L85 PathProgramCache]: Analyzing trace with hash 919948555, now seen corresponding path program 1 times [2022-01-10 08:02:49,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:02:49,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418044174] [2022-01-10 08:02:49,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:02:49,630 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:02:49,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:02:49,631 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 08:02:49,632 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 08:02:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:02:49,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:02:49,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:02:49,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:02:49,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:02:49,803 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:02:49,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418044174] [2022-01-10 08:02:49,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1418044174] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:02:49,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:02:49,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:02:49,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372644340] [2022-01-10 08:02:49,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:02:49,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:02:49,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:02:49,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:02:49,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:02:49,805 INFO L87 Difference]: Start difference. First operand 1680 states and 2604 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:49,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:02:49,827 INFO L93 Difference]: Finished difference Result 1948 states and 3022 transitions. [2022-01-10 08:02:49,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:02:49,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-01-10 08:02:49,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:02:49,833 INFO L225 Difference]: With dead ends: 1948 [2022-01-10 08:02:49,833 INFO L226 Difference]: Without dead ends: 1802 [2022-01-10 08:02:49,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 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 08:02:49,834 INFO L933 BasicCegarLoop]: 1582 mSDtfsCounter, 1490 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:02:49,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1490 Valid, 1657 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:02:49,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2022-01-10 08:02:49,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1800. [2022-01-10 08:02:49,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1800 states, 1798 states have (on average 1.5506117908787542) internal successors, (2788), 1799 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:49,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 2788 transitions. [2022-01-10 08:02:49,863 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 2788 transitions. Word has length 52 [2022-01-10 08:02:49,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:02:49,865 INFO L470 AbstractCegarLoop]: Abstraction has 1800 states and 2788 transitions. [2022-01-10 08:02:49,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:49,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 2788 transitions. [2022-01-10 08:02:49,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 08:02:49,865 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:02:49,865 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] [2022-01-10 08:02:49,874 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 08:02:50,072 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 08:02:50,074 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:02:50,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:02:50,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1515907135, now seen corresponding path program 1 times [2022-01-10 08:02:50,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:02:50,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225422342] [2022-01-10 08:02:50,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:02:50,075 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:02:50,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:02:50,076 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 08:02:50,077 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 08:02:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:02:50,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:02:50,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:02:50,659 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 08:02:50,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:02:50,659 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:02:50,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225422342] [2022-01-10 08:02:50,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1225422342] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:02:50,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:02:50,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:02:50,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424119590] [2022-01-10 08:02:50,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:02:50,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:02:50,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:02:50,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:02:50,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:02:50,660 INFO L87 Difference]: Start difference. First operand 1800 states and 2788 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:50,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:02:50,747 INFO L93 Difference]: Finished difference Result 2077 states and 3215 transitions. [2022-01-10 08:02:50,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:02:50,748 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-01-10 08:02:50,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:02:50,755 INFO L225 Difference]: With dead ends: 2077 [2022-01-10 08:02:50,755 INFO L226 Difference]: Without dead ends: 1811 [2022-01-10 08:02:50,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:02:50,757 INFO L933 BasicCegarLoop]: 1526 mSDtfsCounter, 2910 mSDsluCounter, 2976 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2910 SdHoareTripleChecker+Valid, 4502 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:02:50,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2910 Valid, 4502 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 17 Unchecked, 0.0s Time] [2022-01-10 08:02:50,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2022-01-10 08:02:50,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 1811. [2022-01-10 08:02:50,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1809 states have (on average 1.5483692647871752) internal successors, (2801), 1810 states have internal predecessors, (2801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:50,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 2801 transitions. [2022-01-10 08:02:50,787 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 2801 transitions. Word has length 52 [2022-01-10 08:02:50,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:02:50,787 INFO L470 AbstractCegarLoop]: Abstraction has 1811 states and 2801 transitions. [2022-01-10 08:02:50,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:50,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 2801 transitions. [2022-01-10 08:02:50,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 08:02:50,788 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:02:50,788 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] [2022-01-10 08:02:50,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 08:02:50,995 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 08:02:50,996 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:02:50,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:02:50,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1257741697, now seen corresponding path program 1 times [2022-01-10 08:02:50,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:02:50,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090868379] [2022-01-10 08:02:50,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:02:50,997 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:02:50,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:02:50,998 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 08:02:51,000 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 08:02:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:02:51,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:02:51,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:02:51,185 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 08:02:51,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:02:51,185 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:02:51,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090868379] [2022-01-10 08:02:51,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090868379] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:02:51,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:02:51,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:02:51,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755618160] [2022-01-10 08:02:51,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:02:51,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:02:51,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:02:51,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:02:51,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:02:51,186 INFO L87 Difference]: Start difference. First operand 1811 states and 2801 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:51,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:02:51,212 INFO L93 Difference]: Finished difference Result 2295 states and 3547 transitions. [2022-01-10 08:02:51,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:02:51,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-01-10 08:02:51,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:02:51,218 INFO L225 Difference]: With dead ends: 2295 [2022-01-10 08:02:51,218 INFO L226 Difference]: Without dead ends: 2029 [2022-01-10 08:02:51,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 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 08:02:51,220 INFO L933 BasicCegarLoop]: 1577 mSDtfsCounter, 1486 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:02:51,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1486 Valid, 1656 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:02:51,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2022-01-10 08:02:51,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 2027. [2022-01-10 08:02:51,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2027 states, 2025 states have (on average 1.5432098765432098) internal successors, (3125), 2026 states have internal predecessors, (3125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:51,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 3125 transitions. [2022-01-10 08:02:51,252 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 3125 transitions. Word has length 52 [2022-01-10 08:02:51,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:02:51,252 INFO L470 AbstractCegarLoop]: Abstraction has 2027 states and 3125 transitions. [2022-01-10 08:02:51,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:51,253 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 3125 transitions. [2022-01-10 08:02:51,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 08:02:51,253 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:02:51,253 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] [2022-01-10 08:02:51,276 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 08:02:51,476 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 08:02:51,477 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:02:51,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:02:51,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1666380469, now seen corresponding path program 1 times [2022-01-10 08:02:51,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:02:51,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869494391] [2022-01-10 08:02:51,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:02:51,478 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:02:51,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:02:51,479 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 08:02:51,480 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 08:02:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:02:51,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:02:51,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:02:52,033 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 08:02:52,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:02:52,033 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:02:52,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [869494391] [2022-01-10 08:02:52,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [869494391] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:02:52,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:02:52,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:02:52,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451902179] [2022-01-10 08:02:52,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:02:52,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:02:52,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:02:52,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:02:52,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:02:52,034 INFO L87 Difference]: Start difference. First operand 2027 states and 3125 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:52,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:02:52,117 INFO L93 Difference]: Finished difference Result 2513 states and 3867 transitions. [2022-01-10 08:02:52,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:02:52,117 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-01-10 08:02:52,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:02:52,123 INFO L225 Difference]: With dead ends: 2513 [2022-01-10 08:02:52,124 INFO L226 Difference]: Without dead ends: 2031 [2022-01-10 08:02:52,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:02:52,127 INFO L933 BasicCegarLoop]: 1524 mSDtfsCounter, 1456 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1456 SdHoareTripleChecker+Valid, 3128 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:02:52,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1456 Valid, 3128 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 33 Unchecked, 0.0s Time] [2022-01-10 08:02:52,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2022-01-10 08:02:52,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 2031. [2022-01-10 08:02:52,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2031 states, 2029 states have (on average 1.5421389847215377) internal successors, (3129), 2030 states have internal predecessors, (3129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:52,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2031 states to 2031 states and 3129 transitions. [2022-01-10 08:02:52,163 INFO L78 Accepts]: Start accepts. Automaton has 2031 states and 3129 transitions. Word has length 52 [2022-01-10 08:02:52,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:02:52,164 INFO L470 AbstractCegarLoop]: Abstraction has 2031 states and 3129 transitions. [2022-01-10 08:02:52,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:52,165 INFO L276 IsEmpty]: Start isEmpty. Operand 2031 states and 3129 transitions. [2022-01-10 08:02:52,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 08:02:52,165 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:02:52,165 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] [2022-01-10 08:02:52,175 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 08:02:52,373 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 08:02:52,373 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:02:52,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:02:52,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1819240201, now seen corresponding path program 1 times [2022-01-10 08:02:52,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:02:52,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1014852182] [2022-01-10 08:02:52,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:02:52,374 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:02:52,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:02:52,375 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 08:02:52,375 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 08:02:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:02:52,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:02:52,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:02:53,005 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 08:02:53,006 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:02:53,006 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:02:53,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1014852182] [2022-01-10 08:02:53,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1014852182] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:02:53,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:02:53,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:02:53,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794349378] [2022-01-10 08:02:53,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:02:53,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:02:53,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:02:53,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:02:53,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:02:53,007 INFO L87 Difference]: Start difference. First operand 2031 states and 3129 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:53,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:02:53,181 INFO L93 Difference]: Finished difference Result 4441 states and 6814 transitions. [2022-01-10 08:02:53,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:02:53,182 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-01-10 08:02:53,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:02:53,193 INFO L225 Difference]: With dead ends: 4441 [2022-01-10 08:02:53,194 INFO L226 Difference]: Without dead ends: 3959 [2022-01-10 08:02:53,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:02:53,195 INFO L933 BasicCegarLoop]: 1531 mSDtfsCounter, 3272 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3272 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:02:53,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3272 Valid, 1813 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 08:02:53,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3959 states. [2022-01-10 08:02:53,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3959 to 2991. [2022-01-10 08:02:53,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2991 states, 2989 states have (on average 1.5232519237203077) internal successors, (4553), 2990 states have internal predecessors, (4553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:53,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2991 states to 2991 states and 4553 transitions. [2022-01-10 08:02:53,257 INFO L78 Accepts]: Start accepts. Automaton has 2991 states and 4553 transitions. Word has length 52 [2022-01-10 08:02:53,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:02:53,257 INFO L470 AbstractCegarLoop]: Abstraction has 2991 states and 4553 transitions. [2022-01-10 08:02:53,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:53,257 INFO L276 IsEmpty]: Start isEmpty. Operand 2991 states and 4553 transitions. [2022-01-10 08:02:53,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 08:02:53,257 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:02:53,258 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] [2022-01-10 08:02:53,287 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 08:02:53,464 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 08:02:53,464 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:02:53,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:02:53,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1653841945, now seen corresponding path program 1 times [2022-01-10 08:02:53,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:02:53,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1096888422] [2022-01-10 08:02:53,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:02:53,465 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:02:53,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:02:53,466 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 08:02:53,468 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 08:02:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:02:53,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:02:53,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:02:53,675 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 08:02:53,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:02:53,676 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:02:53,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1096888422] [2022-01-10 08:02:53,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1096888422] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:02:53,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:02:53,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:02:53,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373246824] [2022-01-10 08:02:53,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:02:53,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:02:53,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:02:53,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:02:53,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:02:53,677 INFO L87 Difference]: Start difference. First operand 2991 states and 4553 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:53,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:02:53,745 INFO L93 Difference]: Finished difference Result 5099 states and 7703 transitions. [2022-01-10 08:02:53,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:02:53,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-01-10 08:02:53,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:02:53,756 INFO L225 Difference]: With dead ends: 5099 [2022-01-10 08:02:53,756 INFO L226 Difference]: Without dead ends: 3657 [2022-01-10 08:02:53,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 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 08:02:53,759 INFO L933 BasicCegarLoop]: 1560 mSDtfsCounter, 1478 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:02:53,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1478 Valid, 1624 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:02:53,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3657 states. [2022-01-10 08:02:53,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3657 to 3655. [2022-01-10 08:02:53,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3655 states, 3653 states have (on average 1.5058855735012318) internal successors, (5501), 3654 states have internal predecessors, (5501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:53,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3655 states to 3655 states and 5501 transitions. [2022-01-10 08:02:53,825 INFO L78 Accepts]: Start accepts. Automaton has 3655 states and 5501 transitions. Word has length 54 [2022-01-10 08:02:53,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:02:53,825 INFO L470 AbstractCegarLoop]: Abstraction has 3655 states and 5501 transitions. [2022-01-10 08:02:53,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:53,826 INFO L276 IsEmpty]: Start isEmpty. Operand 3655 states and 5501 transitions. [2022-01-10 08:02:53,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 08:02:53,826 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:02:53,826 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] [2022-01-10 08:02:53,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 08:02:54,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:02:54,033 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:02:54,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:02:54,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1917083004, now seen corresponding path program 1 times [2022-01-10 08:02:54,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:02:54,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579550517] [2022-01-10 08:02:54,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:02:54,034 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:02:54,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:02:54,035 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:02:54,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 08:02:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:02:54,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:02:54,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:02:54,155 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 08:02:54,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:02:54,156 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:02:54,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579550517] [2022-01-10 08:02:54,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [579550517] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:02:54,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:02:54,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:02:54,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421175580] [2022-01-10 08:02:54,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:02:54,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:02:54,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:02:54,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:02:54,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:02:54,157 INFO L87 Difference]: Start difference. First operand 3655 states and 5501 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:54,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:02:54,312 INFO L93 Difference]: Finished difference Result 5614 states and 8290 transitions. [2022-01-10 08:02:54,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:02:54,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-01-10 08:02:54,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:02:54,336 INFO L225 Difference]: With dead ends: 5614 [2022-01-10 08:02:54,336 INFO L226 Difference]: Without dead ends: 5612 [2022-01-10 08:02:54,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 08:02:54,338 INFO L933 BasicCegarLoop]: 1559 mSDtfsCounter, 178 mSDsluCounter, 4604 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 6163 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:02:54,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 6163 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:02:54,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5612 states. [2022-01-10 08:02:54,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5612 to 3823. [2022-01-10 08:02:54,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3823 states, 3821 states have (on average 1.4815493326354356) internal successors, (5661), 3822 states have internal predecessors, (5661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:54,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3823 states to 3823 states and 5661 transitions. [2022-01-10 08:02:54,430 INFO L78 Accepts]: Start accepts. Automaton has 3823 states and 5661 transitions. Word has length 55 [2022-01-10 08:02:54,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:02:54,430 INFO L470 AbstractCegarLoop]: Abstraction has 3823 states and 5661 transitions. [2022-01-10 08:02:54,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:02:54,431 INFO L276 IsEmpty]: Start isEmpty. Operand 3823 states and 5661 transitions. [2022-01-10 08:02:54,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 08:02:54,434 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:02:54,434 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 08:02:54,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 08:02:54,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:02:54,641 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:02:54,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:02:54,641 INFO L85 PathProgramCache]: Analyzing trace with hash -484645446, now seen corresponding path program 1 times [2022-01-10 08:02:54,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:02:54,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [768000821] [2022-01-10 08:02:54,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:02:54,642 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:02:54,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:02:54,643 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:02:54,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 08:02:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:02:54,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 08:02:54,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:02:55,509 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:02:55,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 08:02:56,187 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:02:56,187 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:02:56,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [768000821] [2022-01-10 08:02:56,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [768000821] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 08:02:56,188 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 08:02:56,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-01-10 08:02:56,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046218599] [2022-01-10 08:02:56,188 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 08:02:56,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 08:02:56,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:02:56,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 08:02:56,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-10 08:02:56,189 INFO L87 Difference]: Start difference. First operand 3823 states and 5661 transitions. Second operand has 16 states, 16 states have (on average 8.5625) internal successors, (137), 15 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)