/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/Problem05_label47+token_ring.05.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:49:17,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:49:17,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:49:17,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:49:17,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:49:17,777 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:49:17,778 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:49:17,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:49:17,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:49:17,784 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:49:17,785 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:49:17,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:49:17,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:49:17,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:49:17,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:49:17,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:49:17,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:49:17,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:49:17,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:49:17,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:49:17,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:49:17,796 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:49:17,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:49:17,797 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:49:17,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 07:49:17,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:49:17,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:49:17,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:49:17,806 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 07:49:17,821 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:49:17,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:49:17,822 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:49:17,822 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:49:17,822 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:49:17,823 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:49:17,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:49:17,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:49:17,824 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:49:17,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:49:17,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:49:17,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:49:17,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:49:17,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:49:17,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:49:17,825 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:49:17,825 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:49:17,825 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:49:17,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:49:17,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:49:17,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:49:17,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:49:17,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:49:17,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:49:17,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:49:17,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:49:17,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:49:17,827 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:49:17,827 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:49:17,827 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:49:17,827 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:49:17,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:49:17,828 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:49:17,828 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:49:17,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:49:17,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:49:18,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:49:18,001 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:49:18,001 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:49:18,002 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label47+token_ring.05.cil-1.c [2022-01-10 07:49:18,050 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5be8c0abd/1dbc801fb617448b9d8711f736d96adf/FLAG0ffdb1202 [2022-01-10 07:49:18,720 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:49:18,721 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label47+token_ring.05.cil-1.c [2022-01-10 07:49:18,758 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5be8c0abd/1dbc801fb617448b9d8711f736d96adf/FLAG0ffdb1202 [2022-01-10 07:49:19,031 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5be8c0abd/1dbc801fb617448b9d8711f736d96adf [2022-01-10 07:49:19,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:49:19,035 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:49:19,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:49:19,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:49:19,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:49:19,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:49:19" (1/1) ... [2022-01-10 07:49:19,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1974130d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:19, skipping insertion in model container [2022-01-10 07:49:19,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:49:19" (1/1) ... [2022-01-10 07:49:19,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:49:19,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:49:20,395 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/Problem05_label47+token_ring.05.cil-1.c[377612,377625] [2022-01-10 07:49:20,452 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/Problem05_label47+token_ring.05.cil-1.c[383339,383352] [2022-01-10 07:49:20,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:49:20,589 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:49:21,135 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/Problem05_label47+token_ring.05.cil-1.c[377612,377625] [2022-01-10 07:49:21,141 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/Problem05_label47+token_ring.05.cil-1.c[383339,383352] [2022-01-10 07:49:21,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:49:21,201 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:49:21,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:21 WrapperNode [2022-01-10 07:49:21,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:49:21,202 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:49:21,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:49:21,202 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:49:21,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:21" (1/1) ... [2022-01-10 07:49:21,278 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:21" (1/1) ... [2022-01-10 07:49:21,590 INFO L137 Inliner]: procedures = 55, calls = 56, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 12765 [2022-01-10 07:49:21,591 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:49:21,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:49:21,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:49:21,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:49:21,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:21" (1/1) ... [2022-01-10 07:49:21,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:21" (1/1) ... [2022-01-10 07:49:21,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:21" (1/1) ... [2022-01-10 07:49:21,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:21" (1/1) ... [2022-01-10 07:49:21,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:21" (1/1) ... [2022-01-10 07:49:21,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:21" (1/1) ... [2022-01-10 07:49:21,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:21" (1/1) ... [2022-01-10 07:49:21,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:49:21,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:49:21,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:49:21,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:49:21,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:21" (1/1) ... [2022-01-10 07:49:21,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:49:21,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:49:22,018 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 07:49:22,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 07:49:22,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:49:22,098 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 07:49:22,098 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 07:49:22,098 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 07:49:22,098 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 07:49:22,098 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 07:49:22,098 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 07:49:22,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:49:22,098 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 07:49:22,098 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 07:49:22,098 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 07:49:22,098 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 07:49:22,098 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 07:49:22,098 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 07:49:22,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:49:22,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:49:22,174 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:49:22,175 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:49:28,387 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:49:28,441 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:49:28,441 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-01-10 07:49:28,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:49:28 BoogieIcfgContainer [2022-01-10 07:49:28,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:49:28,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:49:28,450 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:49:28,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:49:28,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:49:19" (1/3) ... [2022-01-10 07:49:28,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b098c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:49:28, skipping insertion in model container [2022-01-10 07:49:28,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:21" (2/3) ... [2022-01-10 07:49:28,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b098c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:49:28, skipping insertion in model container [2022-01-10 07:49:28,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:49:28" (3/3) ... [2022-01-10 07:49:28,458 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label47+token_ring.05.cil-1.c [2022-01-10 07:49:28,463 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:49:28,463 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 07:49:28,535 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:49:28,544 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 07:49:28,544 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 07:49:28,606 INFO L276 IsEmpty]: Start isEmpty. Operand has 2390 states, 2362 states have (on average 1.8526672311600338) internal successors, (4376), 2365 states have internal predecessors, (4376), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-01-10 07:49:28,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:49:28,629 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:28,630 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:28,630 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:28,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:28,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1427785225, now seen corresponding path program 1 times [2022-01-10 07:49:28,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:28,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157761646] [2022-01-10 07:49:28,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:28,667 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:28,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:28,683 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:28,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 07:49:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:28,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:49:28,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:29,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:29,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:29,090 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:29,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157761646] [2022-01-10 07:49:29,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [157761646] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:29,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:29,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:49:29,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117731072] [2022-01-10 07:49:29,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:29,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:49:29,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:29,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:49:29,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:29,128 INFO L87 Difference]: Start difference. First operand has 2390 states, 2362 states have (on average 1.8526672311600338) internal successors, (4376), 2365 states have internal predecessors, (4376), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:29,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:29,293 INFO L93 Difference]: Finished difference Result 4772 states and 8813 transitions. [2022-01-10 07:49:29,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:49:29,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-01-10 07:49:29,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:29,323 INFO L225 Difference]: With dead ends: 4772 [2022-01-10 07:49:29,323 INFO L226 Difference]: Without dead ends: 2323 [2022-01-10 07:49:29,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:29,341 INFO L933 BasicCegarLoop]: 4333 mSDtfsCounter, 302 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 8355 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:29,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 8355 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:29,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2323 states. [2022-01-10 07:49:29,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2323 to 2323. [2022-01-10 07:49:29,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2323 states, 2296 states have (on average 1.84102787456446) internal successors, (4227), 2298 states have internal predecessors, (4227), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-01-10 07:49:29,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 4265 transitions. [2022-01-10 07:49:29,509 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 4265 transitions. Word has length 101 [2022-01-10 07:49:29,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:29,510 INFO L470 AbstractCegarLoop]: Abstraction has 2323 states and 4265 transitions. [2022-01-10 07:49:29,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:29,511 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 4265 transitions. [2022-01-10 07:49:29,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:49:29,518 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:29,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:29,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:29,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:29,724 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:29,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:29,725 INFO L85 PathProgramCache]: Analyzing trace with hash 990118841, now seen corresponding path program 1 times [2022-01-10 07:49:29,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:29,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1977445234] [2022-01-10 07:49:29,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:29,726 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:29,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:29,727 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:29,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 07:49:29,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:29,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:29,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:30,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:30,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:30,036 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:30,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1977445234] [2022-01-10 07:49:30,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1977445234] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:30,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:30,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:30,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067682092] [2022-01-10 07:49:30,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:30,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:30,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:30,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:30,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:30,039 INFO L87 Difference]: Start difference. First operand 2323 states and 4265 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:30,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:30,520 INFO L93 Difference]: Finished difference Result 2721 states and 4881 transitions. [2022-01-10 07:49:30,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:49:30,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-01-10 07:49:30,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:30,546 INFO L225 Difference]: With dead ends: 2721 [2022-01-10 07:49:30,546 INFO L226 Difference]: Without dead ends: 2532 [2022-01-10 07:49:30,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:49:30,551 INFO L933 BasicCegarLoop]: 4287 mSDtfsCounter, 4510 mSDsluCounter, 8509 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4523 SdHoareTripleChecker+Valid, 12796 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:30,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4523 Valid, 12796 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:49:30,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2022-01-10 07:49:30,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 2517. [2022-01-10 07:49:30,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2517 states, 2469 states have (on average 1.820980153908465) internal successors, (4496), 2472 states have internal predecessors, (4496), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2022-01-10 07:49:30,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 4563 transitions. [2022-01-10 07:49:30,630 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 4563 transitions. Word has length 101 [2022-01-10 07:49:30,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:30,631 INFO L470 AbstractCegarLoop]: Abstraction has 2517 states and 4563 transitions. [2022-01-10 07:49:30,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:30,631 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 4563 transitions. [2022-01-10 07:49:30,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:49:30,634 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:30,635 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:30,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:30,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:30,845 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:30,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:30,846 INFO L85 PathProgramCache]: Analyzing trace with hash -726765763, now seen corresponding path program 1 times [2022-01-10 07:49:30,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:30,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716842509] [2022-01-10 07:49:30,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:30,848 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:30,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:30,850 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:30,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 07:49:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:30,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:30,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:31,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:31,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:31,178 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:31,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [716842509] [2022-01-10 07:49:31,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [716842509] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:31,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:31,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:31,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838175256] [2022-01-10 07:49:31,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:31,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:31,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:31,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:31,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:31,191 INFO L87 Difference]: Start difference. First operand 2517 states and 4563 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:31,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:31,587 INFO L93 Difference]: Finished difference Result 2900 states and 5155 transitions. [2022-01-10 07:49:31,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:49:31,587 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-01-10 07:49:31,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:31,594 INFO L225 Difference]: With dead ends: 2900 [2022-01-10 07:49:31,594 INFO L226 Difference]: Without dead ends: 2517 [2022-01-10 07:49:31,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:49:31,596 INFO L933 BasicCegarLoop]: 4240 mSDtfsCounter, 4353 mSDsluCounter, 8239 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4366 SdHoareTripleChecker+Valid, 12479 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:31,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4366 Valid, 12479 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:49:31,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2517 states. [2022-01-10 07:49:31,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2517 to 2517. [2022-01-10 07:49:31,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2517 states, 2469 states have (on average 1.8181449979748887) internal successors, (4489), 2472 states have internal predecessors, (4489), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2022-01-10 07:49:31,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 4556 transitions. [2022-01-10 07:49:31,641 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 4556 transitions. Word has length 101 [2022-01-10 07:49:31,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:31,641 INFO L470 AbstractCegarLoop]: Abstraction has 2517 states and 4556 transitions. [2022-01-10 07:49:31,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:31,642 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 4556 transitions. [2022-01-10 07:49:31,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:49:31,642 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:31,643 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:31,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:31,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:31,850 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:31,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:31,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1711702841, now seen corresponding path program 1 times [2022-01-10 07:49:31,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:31,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746815676] [2022-01-10 07:49:31,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:31,851 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:31,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:31,863 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:31,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 07:49:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:31,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:31,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:32,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:32,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:32,085 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:32,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746815676] [2022-01-10 07:49:32,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746815676] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:32,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:32,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:32,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249140250] [2022-01-10 07:49:32,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:32,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:32,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:32,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:32,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:32,086 INFO L87 Difference]: Start difference. First operand 2517 states and 4556 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:32,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:32,304 INFO L93 Difference]: Finished difference Result 2900 states and 5141 transitions. [2022-01-10 07:49:32,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:49:32,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-01-10 07:49:32,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:32,312 INFO L225 Difference]: With dead ends: 2900 [2022-01-10 07:49:32,312 INFO L226 Difference]: Without dead ends: 2517 [2022-01-10 07:49:32,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:49:32,315 INFO L933 BasicCegarLoop]: 4237 mSDtfsCounter, 4346 mSDsluCounter, 8235 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4359 SdHoareTripleChecker+Valid, 12472 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:32,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4359 Valid, 12472 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:49:32,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2517 states. [2022-01-10 07:49:32,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2517 to 2517. [2022-01-10 07:49:32,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2517 states, 2469 states have (on average 1.8153098420413123) internal successors, (4482), 2472 states have internal predecessors, (4482), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2022-01-10 07:49:32,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 4549 transitions. [2022-01-10 07:49:32,362 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 4549 transitions. Word has length 101 [2022-01-10 07:49:32,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:32,363 INFO L470 AbstractCegarLoop]: Abstraction has 2517 states and 4549 transitions. [2022-01-10 07:49:32,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:32,363 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 4549 transitions. [2022-01-10 07:49:32,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:49:32,364 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:32,364 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:32,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:32,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:32,571 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:32,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:32,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1525979595, now seen corresponding path program 1 times [2022-01-10 07:49:32,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:32,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787685523] [2022-01-10 07:49:32,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:32,572 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:32,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:32,573 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:32,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 07:49:32,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:32,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:32,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:32,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:32,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:32,789 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:32,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787685523] [2022-01-10 07:49:32,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787685523] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:32,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:32,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:32,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378312495] [2022-01-10 07:49:32,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:32,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:32,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:32,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:32,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:32,791 INFO L87 Difference]: Start difference. First operand 2517 states and 4549 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:32,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:32,997 INFO L93 Difference]: Finished difference Result 2900 states and 5127 transitions. [2022-01-10 07:49:32,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:49:32,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-01-10 07:49:32,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:33,004 INFO L225 Difference]: With dead ends: 2900 [2022-01-10 07:49:33,005 INFO L226 Difference]: Without dead ends: 2517 [2022-01-10 07:49:33,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:49:33,006 INFO L933 BasicCegarLoop]: 4234 mSDtfsCounter, 4340 mSDsluCounter, 8231 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4353 SdHoareTripleChecker+Valid, 12465 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:33,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4353 Valid, 12465 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:49:33,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2517 states. [2022-01-10 07:49:33,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2517 to 2517. [2022-01-10 07:49:33,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2517 states, 2469 states have (on average 1.8124746861077359) internal successors, (4475), 2472 states have internal predecessors, (4475), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2022-01-10 07:49:33,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 4542 transitions. [2022-01-10 07:49:33,050 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 4542 transitions. Word has length 101 [2022-01-10 07:49:33,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:33,050 INFO L470 AbstractCegarLoop]: Abstraction has 2517 states and 4542 transitions. [2022-01-10 07:49:33,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:33,050 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 4542 transitions. [2022-01-10 07:49:33,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:49:33,051 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:33,051 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:33,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:33,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:33,261 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:33,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:33,261 INFO L85 PathProgramCache]: Analyzing trace with hash -660589639, now seen corresponding path program 1 times [2022-01-10 07:49:33,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:33,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [525180929] [2022-01-10 07:49:33,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:33,262 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:33,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:33,263 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:33,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 07:49:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:33,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:33,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:33,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:33,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:33,503 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:33,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [525180929] [2022-01-10 07:49:33,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [525180929] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:33,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:33,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:33,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39828061] [2022-01-10 07:49:33,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:33,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:33,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:33,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:33,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:33,505 INFO L87 Difference]: Start difference. First operand 2517 states and 4542 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:33,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:33,717 INFO L93 Difference]: Finished difference Result 2900 states and 5113 transitions. [2022-01-10 07:49:33,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:49:33,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-01-10 07:49:33,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:33,726 INFO L225 Difference]: With dead ends: 2900 [2022-01-10 07:49:33,726 INFO L226 Difference]: Without dead ends: 2517 [2022-01-10 07:49:33,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:49:33,729 INFO L933 BasicCegarLoop]: 4231 mSDtfsCounter, 4334 mSDsluCounter, 8227 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4347 SdHoareTripleChecker+Valid, 12458 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:33,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4347 Valid, 12458 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:49:33,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2517 states. [2022-01-10 07:49:33,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2517 to 2517. [2022-01-10 07:49:33,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2517 states, 2469 states have (on average 1.8096395301741597) internal successors, (4468), 2472 states have internal predecessors, (4468), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2022-01-10 07:49:33,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 4535 transitions. [2022-01-10 07:49:33,778 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 4535 transitions. Word has length 101 [2022-01-10 07:49:33,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:33,778 INFO L470 AbstractCegarLoop]: Abstraction has 2517 states and 4535 transitions. [2022-01-10 07:49:33,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:33,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 4535 transitions. [2022-01-10 07:49:33,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:49:33,779 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:33,779 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:33,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:33,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:33,988 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:33,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:33,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1741052491, now seen corresponding path program 1 times [2022-01-10 07:49:33,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:33,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561230729] [2022-01-10 07:49:33,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:33,989 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:33,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:33,990 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:33,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 07:49:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:34,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:34,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:34,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:34,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:34,215 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:34,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561230729] [2022-01-10 07:49:34,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561230729] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:34,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:34,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:34,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366432147] [2022-01-10 07:49:34,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:34,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:34,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:34,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:34,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:34,216 INFO L87 Difference]: Start difference. First operand 2517 states and 4535 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:34,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:34,496 INFO L93 Difference]: Finished difference Result 2994 states and 5243 transitions. [2022-01-10 07:49:34,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:49:34,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-01-10 07:49:34,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:34,510 INFO L225 Difference]: With dead ends: 2994 [2022-01-10 07:49:34,510 INFO L226 Difference]: Without dead ends: 2611 [2022-01-10 07:49:34,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:49:34,513 INFO L933 BasicCegarLoop]: 4228 mSDtfsCounter, 4384 mSDsluCounter, 8222 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4397 SdHoareTripleChecker+Valid, 12450 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:34,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4397 Valid, 12450 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:49:34,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2022-01-10 07:49:34,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2611. [2022-01-10 07:49:34,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2611 states, 2557 states have (on average 1.792334767305436) internal successors, (4583), 2560 states have internal predecessors, (4583), 35 states have call successors, (35), 16 states have call predecessors, (35), 17 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2022-01-10 07:49:34,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 4654 transitions. [2022-01-10 07:49:34,588 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 4654 transitions. Word has length 101 [2022-01-10 07:49:34,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:34,588 INFO L470 AbstractCegarLoop]: Abstraction has 2611 states and 4654 transitions. [2022-01-10 07:49:34,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:34,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 4654 transitions. [2022-01-10 07:49:34,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:49:34,590 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:34,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:34,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-01-10 07:49:34,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:34,799 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:34,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:34,800 INFO L85 PathProgramCache]: Analyzing trace with hash -363183880, now seen corresponding path program 1 times [2022-01-10 07:49:34,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:34,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712256633] [2022-01-10 07:49:34,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:34,800 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:34,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:34,801 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:34,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 07:49:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:34,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:34,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:35,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:35,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:35,070 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:35,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712256633] [2022-01-10 07:49:35,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712256633] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:35,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:35,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:35,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996151704] [2022-01-10 07:49:35,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:35,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:35,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:35,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:35,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:35,071 INFO L87 Difference]: Start difference. First operand 2611 states and 4654 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:35,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:35,352 INFO L93 Difference]: Finished difference Result 3182 states and 5481 transitions. [2022-01-10 07:49:35,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:49:35,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-01-10 07:49:35,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:35,360 INFO L225 Difference]: With dead ends: 3182 [2022-01-10 07:49:35,361 INFO L226 Difference]: Without dead ends: 2705 [2022-01-10 07:49:35,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:49:35,363 INFO L933 BasicCegarLoop]: 4226 mSDtfsCounter, 4377 mSDsluCounter, 8218 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4390 SdHoareTripleChecker+Valid, 12444 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:35,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4390 Valid, 12444 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:49:35,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2705 states. [2022-01-10 07:49:35,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2705 to 2705. [2022-01-10 07:49:35,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2705 states, 2645 states have (on average 1.7746691871455575) internal successors, (4694), 2648 states have internal predecessors, (4694), 37 states have call successors, (37), 20 states have call predecessors, (37), 21 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2022-01-10 07:49:35,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 4769 transitions. [2022-01-10 07:49:35,419 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 4769 transitions. Word has length 101 [2022-01-10 07:49:35,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:35,420 INFO L470 AbstractCegarLoop]: Abstraction has 2705 states and 4769 transitions. [2022-01-10 07:49:35,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:35,420 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 4769 transitions. [2022-01-10 07:49:35,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:49:35,421 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:35,421 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:35,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:35,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:35,628 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:35,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:35,629 INFO L85 PathProgramCache]: Analyzing trace with hash 341836276, now seen corresponding path program 1 times [2022-01-10 07:49:35,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:35,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1320205201] [2022-01-10 07:49:35,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:35,629 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:35,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:35,630 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:35,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 07:49:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:35,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:35,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:35,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:35,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:35,843 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:35,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1320205201] [2022-01-10 07:49:35,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1320205201] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:35,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:35,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:35,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977582428] [2022-01-10 07:49:35,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:35,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:35,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:35,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:35,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:35,845 INFO L87 Difference]: Start difference. First operand 2705 states and 4769 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:36,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:36,095 INFO L93 Difference]: Finished difference Result 3370 states and 5711 transitions. [2022-01-10 07:49:36,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:49:36,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-01-10 07:49:36,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:36,112 INFO L225 Difference]: With dead ends: 3370 [2022-01-10 07:49:36,112 INFO L226 Difference]: Without dead ends: 2799 [2022-01-10 07:49:36,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:49:36,127 INFO L933 BasicCegarLoop]: 4221 mSDtfsCounter, 4371 mSDsluCounter, 8214 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4384 SdHoareTripleChecker+Valid, 12435 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:36,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4384 Valid, 12435 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:49:36,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2799 states. [2022-01-10 07:49:36,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2799 to 2799. [2022-01-10 07:49:36,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2799 states, 2733 states have (on average 1.756677643615075) internal successors, (4801), 2736 states have internal predecessors, (4801), 39 states have call successors, (39), 24 states have call predecessors, (39), 25 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 07:49:36,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 4880 transitions. [2022-01-10 07:49:36,174 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 4880 transitions. Word has length 101 [2022-01-10 07:49:36,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:36,175 INFO L470 AbstractCegarLoop]: Abstraction has 2799 states and 4880 transitions. [2022-01-10 07:49:36,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:36,175 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 4880 transitions. [2022-01-10 07:49:36,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:49:36,176 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:36,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:36,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:36,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:36,383 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:36,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:36,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1196269127, now seen corresponding path program 1 times [2022-01-10 07:49:36,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:36,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259702171] [2022-01-10 07:49:36,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:36,384 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:36,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:36,400 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:36,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 07:49:36,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:36,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:36,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:36,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:36,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:36,602 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:36,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259702171] [2022-01-10 07:49:36,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259702171] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:36,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:36,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:36,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960950295] [2022-01-10 07:49:36,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:36,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:36,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:36,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:36,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:36,603 INFO L87 Difference]: Start difference. First operand 2799 states and 4880 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:36,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:36,891 INFO L93 Difference]: Finished difference Result 3558 states and 5933 transitions. [2022-01-10 07:49:36,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:49:36,891 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-01-10 07:49:36,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:36,897 INFO L225 Difference]: With dead ends: 3558 [2022-01-10 07:49:36,897 INFO L226 Difference]: Without dead ends: 2893 [2022-01-10 07:49:36,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:49:36,899 INFO L933 BasicCegarLoop]: 4218 mSDtfsCounter, 4364 mSDsluCounter, 8210 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4377 SdHoareTripleChecker+Valid, 12428 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:36,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4377 Valid, 12428 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:49:36,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2022-01-10 07:49:36,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 2893. [2022-01-10 07:49:36,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2893 states, 2821 states have (on average 1.738390641616448) internal successors, (4904), 2824 states have internal predecessors, (4904), 41 states have call successors, (41), 28 states have call predecessors, (41), 29 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2022-01-10 07:49:36,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2893 states to 2893 states and 4987 transitions. [2022-01-10 07:49:36,952 INFO L78 Accepts]: Start accepts. Automaton has 2893 states and 4987 transitions. Word has length 101 [2022-01-10 07:49:36,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:36,952 INFO L470 AbstractCegarLoop]: Abstraction has 2893 states and 4987 transitions. [2022-01-10 07:49:36,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:36,952 INFO L276 IsEmpty]: Start isEmpty. Operand 2893 states and 4987 transitions. [2022-01-10 07:49:36,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:49:36,953 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:36,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:36,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-01-10 07:49:37,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:37,161 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:37,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:37,161 INFO L85 PathProgramCache]: Analyzing trace with hash -860625226, now seen corresponding path program 1 times [2022-01-10 07:49:37,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:37,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088751663] [2022-01-10 07:49:37,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:37,164 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:37,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:37,165 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:37,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 07:49:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:37,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:37,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:37,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:37,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:37,418 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:37,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088751663] [2022-01-10 07:49:37,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088751663] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:37,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:37,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:37,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450279302] [2022-01-10 07:49:37,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:37,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:37,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:37,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:37,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:37,420 INFO L87 Difference]: Start difference. First operand 2893 states and 4987 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:37,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:37,754 INFO L93 Difference]: Finished difference Result 3746 states and 6147 transitions. [2022-01-10 07:49:37,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:49:37,754 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-01-10 07:49:37,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:37,759 INFO L225 Difference]: With dead ends: 3746 [2022-01-10 07:49:37,760 INFO L226 Difference]: Without dead ends: 2987 [2022-01-10 07:49:37,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:49:37,762 INFO L933 BasicCegarLoop]: 4215 mSDtfsCounter, 4356 mSDsluCounter, 8206 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4369 SdHoareTripleChecker+Valid, 12421 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:37,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4369 Valid, 12421 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:49:37,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2022-01-10 07:49:37,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 2987. [2022-01-10 07:49:37,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2987 states, 2909 states have (on average 1.719834994843589) internal successors, (5003), 2912 states have internal predecessors, (5003), 43 states have call successors, (43), 32 states have call predecessors, (43), 33 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-01-10 07:49:37,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2987 states to 2987 states and 5090 transitions. [2022-01-10 07:49:37,818 INFO L78 Accepts]: Start accepts. Automaton has 2987 states and 5090 transitions. Word has length 101 [2022-01-10 07:49:37,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:37,818 INFO L470 AbstractCegarLoop]: Abstraction has 2987 states and 5090 transitions. [2022-01-10 07:49:37,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:37,819 INFO L276 IsEmpty]: Start isEmpty. Operand 2987 states and 5090 transitions. [2022-01-10 07:49:37,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:49:37,820 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:37,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:37,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:38,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:38,029 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:38,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:38,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1747979213, now seen corresponding path program 1 times [2022-01-10 07:49:38,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:38,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471447185] [2022-01-10 07:49:38,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:38,030 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:38,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:38,031 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:38,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 07:49:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:38,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:38,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:38,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:38,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:38,237 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:38,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471447185] [2022-01-10 07:49:38,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471447185] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:38,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:38,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:49:38,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9030053] [2022-01-10 07:49:38,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:38,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:38,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:38,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:38,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:38,239 INFO L87 Difference]: Start difference. First operand 2987 states and 5090 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:38,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:38,359 INFO L93 Difference]: Finished difference Result 3993 states and 6428 transitions. [2022-01-10 07:49:38,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:49:38,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-01-10 07:49:38,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:38,364 INFO L225 Difference]: With dead ends: 3993 [2022-01-10 07:49:38,364 INFO L226 Difference]: Without dead ends: 3141 [2022-01-10 07:49:38,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 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 07:49:38,366 INFO L933 BasicCegarLoop]: 4235 mSDtfsCounter, 206 mSDsluCounter, 12784 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 17019 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:38,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 17019 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:38,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3141 states. [2022-01-10 07:49:38,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3141 to 2993. [2022-01-10 07:49:38,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2993 states, 2915 states have (on average 1.7149228130360206) internal successors, (4999), 2918 states have internal predecessors, (4999), 43 states have call successors, (43), 32 states have call predecessors, (43), 33 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-01-10 07:49:38,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2993 states to 2993 states and 5086 transitions. [2022-01-10 07:49:38,419 INFO L78 Accepts]: Start accepts. Automaton has 2993 states and 5086 transitions. Word has length 101 [2022-01-10 07:49:38,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:38,419 INFO L470 AbstractCegarLoop]: Abstraction has 2993 states and 5086 transitions. [2022-01-10 07:49:38,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:38,420 INFO L276 IsEmpty]: Start isEmpty. Operand 2993 states and 5086 transitions. [2022-01-10 07:49:38,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:49:38,420 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:38,420 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:38,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-01-10 07:49:38,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:38,630 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:38,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:38,631 INFO L85 PathProgramCache]: Analyzing trace with hash 860808245, now seen corresponding path program 1 times [2022-01-10 07:49:38,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:38,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [366911219] [2022-01-10 07:49:38,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:38,631 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:38,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:38,632 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:38,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 07:49:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:38,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:38,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:38,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:38,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:38,857 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:38,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [366911219] [2022-01-10 07:49:38,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [366911219] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:38,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:38,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:49:38,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394753614] [2022-01-10 07:49:38,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:38,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:38,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:38,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:38,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:38,858 INFO L87 Difference]: Start difference. First operand 2993 states and 5086 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:38,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:38,931 INFO L93 Difference]: Finished difference Result 3977 states and 6384 transitions. [2022-01-10 07:49:38,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:49:38,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-01-10 07:49:38,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:38,937 INFO L225 Difference]: With dead ends: 3977 [2022-01-10 07:49:38,937 INFO L226 Difference]: Without dead ends: 3119 [2022-01-10 07:49:38,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 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 07:49:38,940 INFO L933 BasicCegarLoop]: 4235 mSDtfsCounter, 167 mSDsluCounter, 12769 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 17004 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:38,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 17004 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:38,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3119 states. [2022-01-10 07:49:38,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3119 to 2999. [2022-01-10 07:49:38,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2999 states, 2921 states have (on average 1.7100308113659706) internal successors, (4995), 2924 states have internal predecessors, (4995), 43 states have call successors, (43), 32 states have call predecessors, (43), 33 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-01-10 07:49:38,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 5082 transitions. [2022-01-10 07:49:38,990 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 5082 transitions. Word has length 101 [2022-01-10 07:49:38,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:38,990 INFO L470 AbstractCegarLoop]: Abstraction has 2999 states and 5082 transitions. [2022-01-10 07:49:38,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:38,990 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 5082 transitions. [2022-01-10 07:49:38,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:49:38,991 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:38,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:38,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:39,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:39,198 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:39,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:39,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1421508023, now seen corresponding path program 1 times [2022-01-10 07:49:39,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:39,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397641317] [2022-01-10 07:49:39,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:39,199 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:39,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:39,200 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:39,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 07:49:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:39,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:39,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:39,391 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 07:49:39,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:39,392 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:39,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397641317] [2022-01-10 07:49:39,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397641317] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:39,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:39,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:49:39,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680041177] [2022-01-10 07:49:39,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:39,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:39,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:39,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:39,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:39,393 INFO L87 Difference]: Start difference. First operand 2999 states and 5082 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:39,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:39,468 INFO L93 Difference]: Finished difference Result 3961 states and 6340 transitions. [2022-01-10 07:49:39,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:49:39,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-01-10 07:49:39,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:39,474 INFO L225 Difference]: With dead ends: 3961 [2022-01-10 07:49:39,474 INFO L226 Difference]: Without dead ends: 3097 [2022-01-10 07:49:39,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 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 07:49:39,476 INFO L933 BasicCegarLoop]: 4235 mSDtfsCounter, 128 mSDsluCounter, 12754 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 16989 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:39,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 16989 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:39,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3097 states. [2022-01-10 07:49:39,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3097 to 3005. [2022-01-10 07:49:39,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3005 states, 2927 states have (on average 1.7051588657328323) internal successors, (4991), 2930 states have internal predecessors, (4991), 43 states have call successors, (43), 32 states have call predecessors, (43), 33 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-01-10 07:49:39,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3005 states to 3005 states and 5078 transitions. [2022-01-10 07:49:39,530 INFO L78 Accepts]: Start accepts. Automaton has 3005 states and 5078 transitions. Word has length 101 [2022-01-10 07:49:39,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:39,531 INFO L470 AbstractCegarLoop]: Abstraction has 3005 states and 5078 transitions. [2022-01-10 07:49:39,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:39,531 INFO L276 IsEmpty]: Start isEmpty. Operand 3005 states and 5078 transitions. [2022-01-10 07:49:39,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:49:39,532 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:39,532 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:39,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:39,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:39,739 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:39,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:39,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1865408697, now seen corresponding path program 1 times [2022-01-10 07:49:39,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:39,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [487955503] [2022-01-10 07:49:39,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:39,740 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:39,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:39,740 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:39,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 07:49:39,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:39,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:39,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:39,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:39,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:39,931 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:39,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [487955503] [2022-01-10 07:49:39,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [487955503] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:39,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:39,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:49:39,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033747025] [2022-01-10 07:49:39,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:39,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:39,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:39,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:39,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:39,933 INFO L87 Difference]: Start difference. First operand 3005 states and 5078 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:40,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:40,008 INFO L93 Difference]: Finished difference Result 3945 states and 6296 transitions. [2022-01-10 07:49:40,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:49:40,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-01-10 07:49:40,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:40,017 INFO L225 Difference]: With dead ends: 3945 [2022-01-10 07:49:40,017 INFO L226 Difference]: Without dead ends: 3075 [2022-01-10 07:49:40,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 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 07:49:40,024 INFO L933 BasicCegarLoop]: 4235 mSDtfsCounter, 89 mSDsluCounter, 12739 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 16974 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:40,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 16974 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:40,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3075 states. [2022-01-10 07:49:40,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3075 to 3011. [2022-01-10 07:49:40,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3011 states, 2933 states have (on average 1.700306853051483) internal successors, (4987), 2936 states have internal predecessors, (4987), 43 states have call successors, (43), 32 states have call predecessors, (43), 33 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-01-10 07:49:40,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3011 states to 3011 states and 5074 transitions. [2022-01-10 07:49:40,087 INFO L78 Accepts]: Start accepts. Automaton has 3011 states and 5074 transitions. Word has length 101 [2022-01-10 07:49:40,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:40,087 INFO L470 AbstractCegarLoop]: Abstraction has 3011 states and 5074 transitions. [2022-01-10 07:49:40,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:40,088 INFO L276 IsEmpty]: Start isEmpty. Operand 3011 states and 5074 transitions. [2022-01-10 07:49:40,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:49:40,088 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:40,088 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:40,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:40,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:40,298 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:40,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:40,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1512320315, now seen corresponding path program 1 times [2022-01-10 07:49:40,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:40,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1802853008] [2022-01-10 07:49:40,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:40,299 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:40,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:40,308 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:40,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 07:49:40,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:40,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:40,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:40,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:40,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:40,478 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:40,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1802853008] [2022-01-10 07:49:40,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1802853008] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:40,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:40,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:49:40,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478644310] [2022-01-10 07:49:40,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:40,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:40,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:40,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:40,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:40,480 INFO L87 Difference]: Start difference. First operand 3011 states and 5074 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:40,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:40,558 INFO L93 Difference]: Finished difference Result 3901 states and 6212 transitions. [2022-01-10 07:49:40,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:49:40,558 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-01-10 07:49:40,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:40,576 INFO L225 Difference]: With dead ends: 3901 [2022-01-10 07:49:40,576 INFO L226 Difference]: Without dead ends: 3025 [2022-01-10 07:49:40,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 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 07:49:40,578 INFO L933 BasicCegarLoop]: 4235 mSDtfsCounter, 10 mSDsluCounter, 12704 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 16939 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:40,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 16939 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:40,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3025 states. [2022-01-10 07:49:40,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3025 to 3017. [2022-01-10 07:49:40,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3017 states, 2939 states have (on average 1.695474651241919) internal successors, (4983), 2942 states have internal predecessors, (4983), 43 states have call successors, (43), 32 states have call predecessors, (43), 33 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-01-10 07:49:40,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3017 states to 3017 states and 5070 transitions. [2022-01-10 07:49:40,636 INFO L78 Accepts]: Start accepts. Automaton has 3017 states and 5070 transitions. Word has length 101 [2022-01-10 07:49:40,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:40,636 INFO L470 AbstractCegarLoop]: Abstraction has 3017 states and 5070 transitions. [2022-01-10 07:49:40,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:40,637 INFO L276 IsEmpty]: Start isEmpty. Operand 3017 states and 5070 transitions. [2022-01-10 07:49:40,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:49:40,637 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:40,637 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:40,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:40,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:40,844 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:40,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:40,845 INFO L85 PathProgramCache]: Analyzing trace with hash 668314813, now seen corresponding path program 1 times [2022-01-10 07:49:40,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:40,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201140938] [2022-01-10 07:49:40,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:40,845 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:40,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:40,846 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:40,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 07:49:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:40,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:49:40,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:41,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:41,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:41,101 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:41,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201140938] [2022-01-10 07:49:41,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201140938] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:41,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:41,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:41,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487372176] [2022-01-10 07:49:41,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:41,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:41,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:41,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:41,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:41,102 INFO L87 Difference]: Start difference. First operand 3017 states and 5070 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:41,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:41,304 INFO L93 Difference]: Finished difference Result 3900 states and 6169 transitions. [2022-01-10 07:49:41,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:49:41,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-01-10 07:49:41,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:41,310 INFO L225 Difference]: With dead ends: 3900 [2022-01-10 07:49:41,310 INFO L226 Difference]: Without dead ends: 3017 [2022-01-10 07:49:41,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:49:41,312 INFO L933 BasicCegarLoop]: 4213 mSDtfsCounter, 4256 mSDsluCounter, 8203 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4268 SdHoareTripleChecker+Valid, 12416 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:41,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4268 Valid, 12416 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:49:41,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2022-01-10 07:49:41,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 3017. [2022-01-10 07:49:41,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3017 states, 2939 states have (on average 1.693092888737666) internal successors, (4976), 2942 states have internal predecessors, (4976), 43 states have call successors, (43), 32 states have call predecessors, (43), 33 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-01-10 07:49:41,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3017 states to 3017 states and 5063 transitions. [2022-01-10 07:49:41,367 INFO L78 Accepts]: Start accepts. Automaton has 3017 states and 5063 transitions. Word has length 101 [2022-01-10 07:49:41,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:41,367 INFO L470 AbstractCegarLoop]: Abstraction has 3017 states and 5063 transitions. [2022-01-10 07:49:41,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:41,367 INFO L276 IsEmpty]: Start isEmpty. Operand 3017 states and 5063 transitions. [2022-01-10 07:49:41,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:49:41,368 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:41,368 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:41,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-01-10 07:49:41,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:41,576 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:41,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:41,576 INFO L85 PathProgramCache]: Analyzing trace with hash 2054518207, now seen corresponding path program 1 times [2022-01-10 07:49:41,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:41,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231686584] [2022-01-10 07:49:41,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:41,576 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:41,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:41,577 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:41,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 07:49:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:41,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:49:41,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:41,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:41,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:41,808 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:41,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [231686584] [2022-01-10 07:49:41,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [231686584] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:41,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:41,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:41,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756203775] [2022-01-10 07:49:41,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:41,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:41,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:41,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:41,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:41,809 INFO L87 Difference]: Start difference. First operand 3017 states and 5063 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:42,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:42,080 INFO L93 Difference]: Finished difference Result 4016 states and 6313 transitions. [2022-01-10 07:49:42,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:49:42,080 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-01-10 07:49:42,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:42,088 INFO L225 Difference]: With dead ends: 4016 [2022-01-10 07:49:42,088 INFO L226 Difference]: Without dead ends: 3133 [2022-01-10 07:49:42,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:49:42,090 INFO L933 BasicCegarLoop]: 4224 mSDtfsCounter, 4304 mSDsluCounter, 8198 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4316 SdHoareTripleChecker+Valid, 12422 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:42,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4316 Valid, 12422 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:49:42,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3133 states. [2022-01-10 07:49:42,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3133 to 3105. [2022-01-10 07:49:42,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3105 states, 3025 states have (on average 1.672396694214876) internal successors, (5059), 3028 states have internal predecessors, (5059), 43 states have call successors, (43), 34 states have call predecessors, (43), 35 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-01-10 07:49:42,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3105 states to 3105 states and 5146 transitions. [2022-01-10 07:49:42,154 INFO L78 Accepts]: Start accepts. Automaton has 3105 states and 5146 transitions. Word has length 101 [2022-01-10 07:49:42,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:42,154 INFO L470 AbstractCegarLoop]: Abstraction has 3105 states and 5146 transitions. [2022-01-10 07:49:42,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:42,154 INFO L276 IsEmpty]: Start isEmpty. Operand 3105 states and 5146 transitions. [2022-01-10 07:49:42,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:49:42,155 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:42,155 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:42,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:42,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:42,362 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:42,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:42,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1817747263, now seen corresponding path program 1 times [2022-01-10 07:49:42,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:42,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146848762] [2022-01-10 07:49:42,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:42,363 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:42,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:42,364 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:42,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 07:49:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:42,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:49:42,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:42,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:42,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:42,597 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:42,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146848762] [2022-01-10 07:49:42,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146848762] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:42,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:42,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:49:42,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220923357] [2022-01-10 07:49:42,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:42,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:49:42,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:42,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:49:42,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:42,598 INFO L87 Difference]: Start difference. First operand 3105 states and 5146 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 07:49:42,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:42,688 INFO L93 Difference]: Finished difference Result 5016 states and 7469 transitions. [2022-01-10 07:49:42,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:49:42,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 101 [2022-01-10 07:49:42,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:42,696 INFO L225 Difference]: With dead ends: 5016 [2022-01-10 07:49:42,696 INFO L226 Difference]: Without dead ends: 4046 [2022-01-10 07:49:42,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:42,699 INFO L933 BasicCegarLoop]: 4280 mSDtfsCounter, 4123 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4123 SdHoareTripleChecker+Valid, 4523 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:42,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4123 Valid, 4523 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:42,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4046 states. [2022-01-10 07:49:42,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4046 to 4044. [2022-01-10 07:49:42,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4044 states, 3890 states have (on average 1.565809768637532) internal successors, (6091), 3896 states have internal predecessors, (6091), 82 states have call successors, (82), 68 states have call predecessors, (82), 70 states have return successors, (84), 80 states have call predecessors, (84), 82 states have call successors, (84) [2022-01-10 07:49:42,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4044 states to 4044 states and 6257 transitions. [2022-01-10 07:49:42,792 INFO L78 Accepts]: Start accepts. Automaton has 4044 states and 6257 transitions. Word has length 101 [2022-01-10 07:49:42,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:42,792 INFO L470 AbstractCegarLoop]: Abstraction has 4044 states and 6257 transitions. [2022-01-10 07:49:42,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 07:49:42,792 INFO L276 IsEmpty]: Start isEmpty. Operand 4044 states and 6257 transitions. [2022-01-10 07:49:42,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 07:49:42,794 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:42,794 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:42,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:43,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:43,001 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:43,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:43,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1099339233, now seen corresponding path program 1 times [2022-01-10 07:49:43,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:43,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1506399358] [2022-01-10 07:49:43,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:43,002 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:43,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:43,020 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:43,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 07:49:43,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:43,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:49:43,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:43,361 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 07:49:43,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:43,361 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:43,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1506399358] [2022-01-10 07:49:43,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1506399358] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:43,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:43,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:43,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785040049] [2022-01-10 07:49:43,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:43,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:49:43,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:43,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:49:43,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:49:43,363 INFO L87 Difference]: Start difference. First operand 4044 states and 6257 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:49:43,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:43,690 INFO L93 Difference]: Finished difference Result 7746 states and 10681 transitions. [2022-01-10 07:49:43,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:49:43,691 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 164 [2022-01-10 07:49:43,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:43,702 INFO L225 Difference]: With dead ends: 7746 [2022-01-10 07:49:43,702 INFO L226 Difference]: Without dead ends: 5838 [2022-01-10 07:49:43,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:43,706 INFO L933 BasicCegarLoop]: 4336 mSDtfsCounter, 4286 mSDsluCounter, 4396 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4292 SdHoareTripleChecker+Valid, 8732 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:43,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4292 Valid, 8732 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:49:43,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5838 states. [2022-01-10 07:49:43,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5838 to 5836. [2022-01-10 07:49:43,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5836 states, 5539 states have (on average 1.4535114641632063) internal successors, (8051), 5554 states have internal predecessors, (8051), 155 states have call successors, (155), 128 states have call predecessors, (155), 140 states have return successors, (179), 155 states have call predecessors, (179), 155 states have call successors, (179) [2022-01-10 07:49:43,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5836 states to 5836 states and 8385 transitions. [2022-01-10 07:49:43,963 INFO L78 Accepts]: Start accepts. Automaton has 5836 states and 8385 transitions. Word has length 164 [2022-01-10 07:49:43,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:43,964 INFO L470 AbstractCegarLoop]: Abstraction has 5836 states and 8385 transitions. [2022-01-10 07:49:43,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:49:43,964 INFO L276 IsEmpty]: Start isEmpty. Operand 5836 states and 8385 transitions. [2022-01-10 07:49:43,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 07:49:43,969 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:43,969 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:43,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:44,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:44,177 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:44,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:44,178 INFO L85 PathProgramCache]: Analyzing trace with hash -670132381, now seen corresponding path program 1 times [2022-01-10 07:49:44,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:44,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203925023] [2022-01-10 07:49:44,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:44,178 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:44,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:44,179 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:44,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 07:49:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:44,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:49:44,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:44,459 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-01-10 07:49:44,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:44,459 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:44,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203925023] [2022-01-10 07:49:44,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203925023] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:44,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:44,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:49:44,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269818226] [2022-01-10 07:49:44,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:44,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:49:44,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:44,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:49:44,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:44,461 INFO L87 Difference]: Start difference. First operand 5836 states and 8385 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:49:44,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:44,680 INFO L93 Difference]: Finished difference Result 9528 states and 12774 transitions. [2022-01-10 07:49:44,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:49:44,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 164 [2022-01-10 07:49:44,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:44,692 INFO L225 Difference]: With dead ends: 9528 [2022-01-10 07:49:44,692 INFO L226 Difference]: Without dead ends: 5828 [2022-01-10 07:49:44,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:44,698 INFO L933 BasicCegarLoop]: 4230 mSDtfsCounter, 265 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 8188 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:44,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 8188 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:44,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5828 states. [2022-01-10 07:49:44,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5828 to 5828. [2022-01-10 07:49:44,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5828 states, 5534 states have (on average 1.453198409830141) internal successors, (8042), 5548 states have internal predecessors, (8042), 152 states have call successors, (152), 128 states have call predecessors, (152), 140 states have return successors, (176), 152 states have call predecessors, (176), 152 states have call successors, (176) [2022-01-10 07:49:44,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5828 states to 5828 states and 8370 transitions. [2022-01-10 07:49:44,930 INFO L78 Accepts]: Start accepts. Automaton has 5828 states and 8370 transitions. Word has length 164 [2022-01-10 07:49:44,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:44,931 INFO L470 AbstractCegarLoop]: Abstraction has 5828 states and 8370 transitions. [2022-01-10 07:49:44,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:49:44,931 INFO L276 IsEmpty]: Start isEmpty. Operand 5828 states and 8370 transitions. [2022-01-10 07:49:44,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-10 07:49:44,933 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:44,933 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:44,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:45,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:45,141 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:45,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:45,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1139784276, now seen corresponding path program 1 times [2022-01-10 07:49:45,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:45,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889577326] [2022-01-10 07:49:45,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:45,142 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:45,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:45,142 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:45,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 07:49:45,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:45,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:49:45,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:45,486 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 07:49:45,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:45,487 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:45,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889577326] [2022-01-10 07:49:45,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1889577326] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:45,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:45,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:45,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607916600] [2022-01-10 07:49:45,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:45,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:49:45,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:45,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:49:45,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:49:45,488 INFO L87 Difference]: Start difference. First operand 5828 states and 8370 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:49:45,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:45,972 INFO L93 Difference]: Finished difference Result 12839 states and 16716 transitions. [2022-01-10 07:49:45,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:49:45,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 165 [2022-01-10 07:49:45,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:45,990 INFO L225 Difference]: With dead ends: 12839 [2022-01-10 07:49:45,990 INFO L226 Difference]: Without dead ends: 9147 [2022-01-10 07:49:45,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:45,998 INFO L933 BasicCegarLoop]: 4319 mSDtfsCounter, 4281 mSDsluCounter, 4373 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4287 SdHoareTripleChecker+Valid, 8692 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:45,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4287 Valid, 8692 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:49:46,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9147 states. [2022-01-10 07:49:46,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9147 to 9145. [2022-01-10 07:49:46,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9145 states, 8584 states have (on average 1.3583410997204102) internal successors, (11660), 8615 states have internal predecessors, (11660), 287 states have call successors, (287), 240 states have call predecessors, (287), 272 states have return successors, (355), 291 states have call predecessors, (355), 287 states have call successors, (355) [2022-01-10 07:49:46,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9145 states to 9145 states and 12302 transitions. [2022-01-10 07:49:46,533 INFO L78 Accepts]: Start accepts. Automaton has 9145 states and 12302 transitions. Word has length 165 [2022-01-10 07:49:46,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:46,534 INFO L470 AbstractCegarLoop]: Abstraction has 9145 states and 12302 transitions. [2022-01-10 07:49:46,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:49:46,534 INFO L276 IsEmpty]: Start isEmpty. Operand 9145 states and 12302 transitions. [2022-01-10 07:49:46,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-10 07:49:46,538 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:46,539 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:46,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:46,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:46,746 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:46,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:46,746 INFO L85 PathProgramCache]: Analyzing trace with hash -629687338, now seen corresponding path program 1 times [2022-01-10 07:49:46,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:46,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914743401] [2022-01-10 07:49:46,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:46,747 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:46,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:46,764 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:46,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 07:49:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:46,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:49:46,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:47,089 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-01-10 07:49:47,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:47,089 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:47,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914743401] [2022-01-10 07:49:47,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914743401] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:47,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:47,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:49:47,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873927212] [2022-01-10 07:49:47,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:47,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:49:47,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:47,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:49:47,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:47,091 INFO L87 Difference]: Start difference. First operand 9145 states and 12302 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:49:47,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:47,466 INFO L93 Difference]: Finished difference Result 16147 states and 20611 transitions. [2022-01-10 07:49:47,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:49:47,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 165 [2022-01-10 07:49:47,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:47,485 INFO L225 Difference]: With dead ends: 16147 [2022-01-10 07:49:47,485 INFO L226 Difference]: Without dead ends: 9138 [2022-01-10 07:49:47,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:47,499 INFO L933 BasicCegarLoop]: 4229 mSDtfsCounter, 263 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 8187 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:47,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 8187 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:47,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9138 states. [2022-01-10 07:49:47,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9138 to 9138. [2022-01-10 07:49:47,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9138 states, 8580 states have (on average 1.3581585081585081) internal successors, (11653), 8610 states have internal predecessors, (11653), 284 states have call successors, (284), 240 states have call predecessors, (284), 272 states have return successors, (352), 288 states have call predecessors, (352), 284 states have call successors, (352) [2022-01-10 07:49:47,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9138 states to 9138 states and 12289 transitions. [2022-01-10 07:49:47,892 INFO L78 Accepts]: Start accepts. Automaton has 9138 states and 12289 transitions. Word has length 165 [2022-01-10 07:49:47,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:47,892 INFO L470 AbstractCegarLoop]: Abstraction has 9138 states and 12289 transitions. [2022-01-10 07:49:47,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:49:47,893 INFO L276 IsEmpty]: Start isEmpty. Operand 9138 states and 12289 transitions. [2022-01-10 07:49:47,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-01-10 07:49:47,897 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:47,897 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:47,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-01-10 07:49:48,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:48,104 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:48,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:48,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1506626749, now seen corresponding path program 1 times [2022-01-10 07:49:48,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:48,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092457428] [2022-01-10 07:49:48,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:48,105 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:48,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:48,106 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:48,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 07:49:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:48,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:49:48,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:48,500 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 07:49:48,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:48,500 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:48,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2092457428] [2022-01-10 07:49:48,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2092457428] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:48,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:48,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:48,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677982641] [2022-01-10 07:49:48,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:48,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:49:48,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:48,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:49:48,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:49:48,501 INFO L87 Difference]: Start difference. First operand 9138 states and 12289 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:49:49,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:49,234 INFO L93 Difference]: Finished difference Result 22390 states and 28027 transitions. [2022-01-10 07:49:49,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:49:49,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 166 [2022-01-10 07:49:49,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:49,265 INFO L225 Difference]: With dead ends: 22390 [2022-01-10 07:49:49,265 INFO L226 Difference]: Without dead ends: 15388 [2022-01-10 07:49:49,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:49,280 INFO L933 BasicCegarLoop]: 4227 mSDtfsCounter, 4286 mSDsluCounter, 4283 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4292 SdHoareTripleChecker+Valid, 8510 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:49,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4292 Valid, 8510 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:49:49,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15388 states. [2022-01-10 07:49:49,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15388 to 15386. [2022-01-10 07:49:49,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15386 states, 14324 states have (on average 1.2885367215861492) internal successors, (18457), 14390 states have internal predecessors, (18457), 532 states have call successors, (532), 448 states have call predecessors, (532), 528 states have return successors, (696), 548 states have call predecessors, (696), 532 states have call successors, (696) [2022-01-10 07:49:49,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15386 states to 15386 states and 19685 transitions. [2022-01-10 07:49:49,882 INFO L78 Accepts]: Start accepts. Automaton has 15386 states and 19685 transitions. Word has length 166 [2022-01-10 07:49:49,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:49,883 INFO L470 AbstractCegarLoop]: Abstraction has 15386 states and 19685 transitions. [2022-01-10 07:49:49,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:49:49,883 INFO L276 IsEmpty]: Start isEmpty. Operand 15386 states and 19685 transitions. [2022-01-10 07:49:49,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:49:49,891 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:49,892 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:49,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:50,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:50,099 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:50,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:50,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1281695880, now seen corresponding path program 1 times [2022-01-10 07:49:50,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:50,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029873082] [2022-01-10 07:49:50,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:50,100 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:50,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:50,101 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:50,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 07:49:50,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:50,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:49:50,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:50,430 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 07:49:50,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:50,430 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:50,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029873082] [2022-01-10 07:49:50,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029873082] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:50,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:50,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:50,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349278793] [2022-01-10 07:49:50,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:50,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:49:50,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:50,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:49:50,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:49:50,432 INFO L87 Difference]: Start difference. First operand 15386 states and 19685 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:49:51,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:51,732 INFO L93 Difference]: Finished difference Result 42431 states and 51585 transitions. [2022-01-10 07:49:51,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:49:51,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 167 [2022-01-10 07:49:51,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:51,816 INFO L225 Difference]: With dead ends: 42431 [2022-01-10 07:49:51,816 INFO L226 Difference]: Without dead ends: 29181 [2022-01-10 07:49:51,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:51,846 INFO L933 BasicCegarLoop]: 4308 mSDtfsCounter, 4278 mSDsluCounter, 4332 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4284 SdHoareTripleChecker+Valid, 8640 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:51,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4284 Valid, 8640 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:49:51,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29181 states. [2022-01-10 07:49:53,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29181 to 28635. [2022-01-10 07:49:53,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28635 states, 26322 states have (on average 1.235316465314186) internal successors, (32516), 26629 states have internal predecessors, (32516), 999 states have call successors, (999), 832 states have call predecessors, (999), 1312 states have return successors, (1676), 1175 states have call predecessors, (1676), 999 states have call successors, (1676) [2022-01-10 07:49:53,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28635 states to 28635 states and 35191 transitions. [2022-01-10 07:49:53,138 INFO L78 Accepts]: Start accepts. Automaton has 28635 states and 35191 transitions. Word has length 167 [2022-01-10 07:49:53,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:53,138 INFO L470 AbstractCegarLoop]: Abstraction has 28635 states and 35191 transitions. [2022-01-10 07:49:53,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:49:53,139 INFO L276 IsEmpty]: Start isEmpty. Operand 28635 states and 35191 transitions. [2022-01-10 07:49:53,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:49:53,150 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:53,150 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:53,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:53,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:53,358 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:53,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:53,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1243799802, now seen corresponding path program 1 times [2022-01-10 07:49:53,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:53,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542920073] [2022-01-10 07:49:53,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:53,358 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:53,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:53,360 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:53,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 07:49:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:53,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:49:53,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:53,692 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-01-10 07:49:53,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:53,692 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:53,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542920073] [2022-01-10 07:49:53,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542920073] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:53,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:53,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:49:53,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543445817] [2022-01-10 07:49:53,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:53,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:49:53,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:53,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:49:53,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:53,694 INFO L87 Difference]: Start difference. First operand 28635 states and 35191 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:49:54,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:54,905 INFO L93 Difference]: Finished difference Result 55130 states and 66394 transitions. [2022-01-10 07:49:54,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:49:54,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 167 [2022-01-10 07:49:54,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:54,966 INFO L225 Difference]: With dead ends: 55130 [2022-01-10 07:49:54,967 INFO L226 Difference]: Without dead ends: 28630 [2022-01-10 07:49:55,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:55,008 INFO L933 BasicCegarLoop]: 4228 mSDtfsCounter, 260 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 8186 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:55,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 8186 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:55,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28630 states. [2022-01-10 07:49:56,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28630 to 28630. [2022-01-10 07:49:56,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28630 states, 26320 states have (on average 1.235258358662614) internal successors, (32512), 26626 states have internal predecessors, (32512), 996 states have call successors, (996), 832 states have call predecessors, (996), 1312 states have return successors, (1672), 1172 states have call predecessors, (1672), 996 states have call successors, (1672) [2022-01-10 07:49:56,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28630 states to 28630 states and 35180 transitions. [2022-01-10 07:49:56,349 INFO L78 Accepts]: Start accepts. Automaton has 28630 states and 35180 transitions. Word has length 167 [2022-01-10 07:49:56,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:56,350 INFO L470 AbstractCegarLoop]: Abstraction has 28630 states and 35180 transitions. [2022-01-10 07:49:56,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:49:56,350 INFO L276 IsEmpty]: Start isEmpty. Operand 28630 states and 35180 transitions. [2022-01-10 07:49:56,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:49:56,361 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:56,361 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:56,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:56,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:56,568 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:56,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:56,569 INFO L85 PathProgramCache]: Analyzing trace with hash -2000045159, now seen corresponding path program 1 times [2022-01-10 07:49:56,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:56,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068956253] [2022-01-10 07:49:56,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:56,569 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:56,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:56,570 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:56,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-01-10 07:49:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:56,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:49:56,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:56,917 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 07:49:56,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:56,918 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:56,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1068956253] [2022-01-10 07:49:56,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1068956253] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:56,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:56,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:56,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947255553] [2022-01-10 07:49:56,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:56,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:49:56,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:56,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:49:56,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:49:56,919 INFO L87 Difference]: Start difference. First operand 28630 states and 35180 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:49:59,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:59,292 INFO L93 Difference]: Finished difference Result 77750 states and 93037 transitions. [2022-01-10 07:49:59,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:49:59,292 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 168 [2022-01-10 07:49:59,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:59,411 INFO L225 Difference]: With dead ends: 77750 [2022-01-10 07:49:59,411 INFO L226 Difference]: Without dead ends: 51256 [2022-01-10 07:49:59,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:59,453 INFO L933 BasicCegarLoop]: 4281 mSDtfsCounter, 4260 mSDsluCounter, 4305 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4266 SdHoareTripleChecker+Valid, 8586 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:59,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4266 Valid, 8586 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:49:59,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51256 states. [2022-01-10 07:50:01,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51256 to 51254. [2022-01-10 07:50:02,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51254 states, 46893 states have (on average 1.2083893118375877) internal successors, (56665), 47504 states have internal predecessors, (56665), 1863 states have call successors, (1863), 1536 states have call predecessors, (1863), 2496 states have return successors, (3227), 2215 states have call predecessors, (3227), 1863 states have call successors, (3227) [2022-01-10 07:50:02,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51254 states to 51254 states and 61755 transitions. [2022-01-10 07:50:02,123 INFO L78 Accepts]: Start accepts. Automaton has 51254 states and 61755 transitions. Word has length 168 [2022-01-10 07:50:02,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:02,123 INFO L470 AbstractCegarLoop]: Abstraction has 51254 states and 61755 transitions. [2022-01-10 07:50:02,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:50:02,124 INFO L276 IsEmpty]: Start isEmpty. Operand 51254 states and 61755 transitions. [2022-01-10 07:50:02,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:50:02,142 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:02,142 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:50:02,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-01-10 07:50:02,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:50:02,349 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:02,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:02,349 INFO L85 PathProgramCache]: Analyzing trace with hash 525450523, now seen corresponding path program 1 times [2022-01-10 07:50:02,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:02,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718292187] [2022-01-10 07:50:02,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:02,350 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:02,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:02,351 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:50:02,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-01-10 07:50:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:02,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:50:02,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:02,818 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-01-10 07:50:02,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:02,818 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:02,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718292187] [2022-01-10 07:50:02,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718292187] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:02,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:02,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:50:02,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577082686] [2022-01-10 07:50:02,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:02,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:50:02,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:02,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:50:02,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:50:02,820 INFO L87 Difference]: Start difference. First operand 51254 states and 61755 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:50:05,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:05,264 INFO L93 Difference]: Finished difference Result 100368 states and 119524 transitions. [2022-01-10 07:50:05,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:50:05,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 168 [2022-01-10 07:50:05,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:05,405 INFO L225 Difference]: With dead ends: 100368 [2022-01-10 07:50:05,405 INFO L226 Difference]: Without dead ends: 51250 [2022-01-10 07:50:05,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:50:05,555 INFO L933 BasicCegarLoop]: 4227 mSDtfsCounter, 258 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 8185 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:05,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 8185 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:50:05,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51250 states. [2022-01-10 07:50:08,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51250 to 51250. [2022-01-10 07:50:08,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51250 states, 46892 states have (on average 1.2083724302652905) internal successors, (56663), 47502 states have internal predecessors, (56663), 1860 states have call successors, (1860), 1536 states have call predecessors, (1860), 2496 states have return successors, (3224), 2212 states have call predecessors, (3224), 1860 states have call successors, (3224) [2022-01-10 07:50:08,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51250 states to 51250 states and 61747 transitions. [2022-01-10 07:50:08,352 INFO L78 Accepts]: Start accepts. Automaton has 51250 states and 61747 transitions. Word has length 168 [2022-01-10 07:50:08,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:08,353 INFO L470 AbstractCegarLoop]: Abstraction has 51250 states and 61747 transitions. [2022-01-10 07:50:08,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:50:08,353 INFO L276 IsEmpty]: Start isEmpty. Operand 51250 states and 61747 transitions. [2022-01-10 07:50:08,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-01-10 07:50:08,368 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:08,368 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:50:08,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-01-10 07:50:08,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:50:08,572 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:08,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:08,572 INFO L85 PathProgramCache]: Analyzing trace with hash 386755740, now seen corresponding path program 1 times [2022-01-10 07:50:08,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:08,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777076778] [2022-01-10 07:50:08,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:08,573 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:08,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:08,574 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:50:08,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-01-10 07:50:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:08,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:50:08,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:08,977 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 07:50:08,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:08,977 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:08,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [777076778] [2022-01-10 07:50:08,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [777076778] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:08,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:08,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:50:08,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193952672] [2022-01-10 07:50:08,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:08,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:50:08,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:08,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:50:08,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:50:08,978 INFO L87 Difference]: Start difference. First operand 51250 states and 61747 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 07:50:13,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:13,162 INFO L93 Difference]: Finished difference Result 139149 states and 165616 transitions. [2022-01-10 07:50:13,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:50:13,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 169 [2022-01-10 07:50:13,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:13,386 INFO L225 Difference]: With dead ends: 139149 [2022-01-10 07:50:13,386 INFO L226 Difference]: Without dead ends: 70798 [2022-01-10 07:50:13,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:50:13,470 INFO L933 BasicCegarLoop]: 4463 mSDtfsCounter, 224 mSDsluCounter, 4219 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 8682 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:13,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 8682 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:50:13,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70798 states. [2022-01-10 07:50:17,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70798 to 70798. [2022-01-10 07:50:17,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70798 states, 64680 states have (on average 1.1985157699443414) internal successors, (77520), 65482 states have internal predecessors, (77520), 2660 states have call successors, (2660), 2176 states have call predecessors, (2660), 3456 states have return successors, (4642), 3140 states have call predecessors, (4642), 2660 states have call successors, (4642) [2022-01-10 07:50:17,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70798 states to 70798 states and 84822 transitions. [2022-01-10 07:50:17,254 INFO L78 Accepts]: Start accepts. Automaton has 70798 states and 84822 transitions. Word has length 169 [2022-01-10 07:50:17,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:17,255 INFO L470 AbstractCegarLoop]: Abstraction has 70798 states and 84822 transitions. [2022-01-10 07:50:17,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 07:50:17,255 INFO L276 IsEmpty]: Start isEmpty. Operand 70798 states and 84822 transitions. [2022-01-10 07:50:17,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-01-10 07:50:17,288 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:17,288 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:50:17,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-01-10 07:50:17,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:50:17,496 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:17,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:17,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1123867177, now seen corresponding path program 1 times [2022-01-10 07:50:17,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:17,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [461154362] [2022-01-10 07:50:17,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:17,497 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:17,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:17,498 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:50:17,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-01-10 07:50:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:17,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:50:17,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:17,913 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 07:50:17,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:17,913 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:17,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [461154362] [2022-01-10 07:50:17,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [461154362] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:17,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:17,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:50:17,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067000361] [2022-01-10 07:50:17,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:17,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:50:17,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:17,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:50:17,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:50:17,914 INFO L87 Difference]: Start difference. First operand 70798 states and 84822 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)