/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_label44+token_ring.07.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:44:18,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:44:18,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:44:18,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:44:18,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:44:18,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:44:18,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:44:18,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:44:18,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:44:18,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:44:18,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:44:18,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:44:18,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:44:18,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:44:18,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:44:18,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:44:18,087 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:44:18,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:44:18,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:44:18,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:44:18,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:44:18,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:44:18,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:44:18,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:44:18,112 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 07:44:18,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:44:18,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:44:18,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:44:18,122 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 07:44:18,154 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:44:18,154 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:44:18,155 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:44:18,155 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:44:18,156 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:44:18,156 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:44:18,157 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:44:18,157 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:44:18,157 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:44:18,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:44:18,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:44:18,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:44:18,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:44:18,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:44:18,158 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:44:18,159 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:44:18,159 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:44:18,159 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:44:18,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:44:18,159 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:44:18,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:44:18,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:44:18,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:44:18,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:44:18,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:44:18,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:44:18,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:44:18,161 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:44:18,161 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:44:18,161 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:44:18,161 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:44:18,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:44:18,161 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:44:18,161 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:44:18,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:44:18,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:44:18,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:44:18,391 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:44:18,391 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:44:18,392 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label44+token_ring.07.cil-1.c [2022-01-10 07:44:18,444 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a73f7975/dbe848c0ed2d4747babd997917b7460e/FLAG481db4690 [2022-01-10 07:44:19,167 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:44:19,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label44+token_ring.07.cil-1.c [2022-01-10 07:44:19,216 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a73f7975/dbe848c0ed2d4747babd997917b7460e/FLAG481db4690 [2022-01-10 07:44:19,684 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a73f7975/dbe848c0ed2d4747babd997917b7460e [2022-01-10 07:44:19,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:44:19,687 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:44:19,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:44:19,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:44:19,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:44:19,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:44:19" (1/1) ... [2022-01-10 07:44:19,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4233c5f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:44:19, skipping insertion in model container [2022-01-10 07:44:19,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:44:19" (1/1) ... [2022-01-10 07:44:19,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:44:19,888 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:44:21,395 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_label44+token_ring.07.cil-1.c[377340,377353] [2022-01-10 07:44:21,423 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_label44+token_ring.07.cil-1.c[383339,383352] [2022-01-10 07:44:21,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:44:21,615 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:44:22,346 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_label44+token_ring.07.cil-1.c[377340,377353] [2022-01-10 07:44:22,353 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_label44+token_ring.07.cil-1.c[383339,383352] [2022-01-10 07:44:22,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:44:22,432 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:44:22,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:44:22 WrapperNode [2022-01-10 07:44:22,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:44:22,433 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:44:22,433 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:44:22,433 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:44:22,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:44:22" (1/1) ... [2022-01-10 07:44:22,523 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:44:22" (1/1) ... [2022-01-10 07:44:22,943 INFO L137 Inliner]: procedures = 59, calls = 62, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 12877 [2022-01-10 07:44:22,943 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:44:22,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:44:22,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:44:22,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:44:22,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:44:22" (1/1) ... [2022-01-10 07:44:22,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:44:22" (1/1) ... [2022-01-10 07:44:23,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:44:22" (1/1) ... [2022-01-10 07:44:23,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:44:22" (1/1) ... [2022-01-10 07:44:23,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:44:22" (1/1) ... [2022-01-10 07:44:23,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:44:22" (1/1) ... [2022-01-10 07:44:23,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:44:22" (1/1) ... [2022-01-10 07:44:23,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:44:23,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:44:23,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:44:23,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:44:23,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:44:22" (1/1) ... [2022-01-10 07:44:23,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:44:23,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:44:23,346 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 07:44:23,371 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 07:44:23,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:44:23,384 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 07:44:23,384 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 07:44:23,384 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 07:44:23,385 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 07:44:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 07:44:23,385 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 07:44:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:44:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 07:44:23,385 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 07:44:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 07:44:23,385 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 07:44:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 07:44:23,386 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 07:44:23,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:44:23,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:44:23,552 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:44:23,553 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:44:31,717 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:44:31,745 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:44:31,745 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-01-10 07:44:31,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:44:31 BoogieIcfgContainer [2022-01-10 07:44:31,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:44:31,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:44:31,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:44:31,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:44:31,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:44:19" (1/3) ... [2022-01-10 07:44:31,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2131f239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:44:31, skipping insertion in model container [2022-01-10 07:44:31,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:44:22" (2/3) ... [2022-01-10 07:44:31,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2131f239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:44:31, skipping insertion in model container [2022-01-10 07:44:31,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:44:31" (3/3) ... [2022-01-10 07:44:31,756 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.07.cil-1.c [2022-01-10 07:44:31,760 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:44:31,760 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 07:44:31,808 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:44:31,813 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 07:44:31,814 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 07:44:31,856 INFO L276 IsEmpty]: Start isEmpty. Operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-10 07:44:31,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:44:31,875 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:31,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:44:31,876 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:31,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:31,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1176565078, now seen corresponding path program 1 times [2022-01-10 07:44:31,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:31,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700676601] [2022-01-10 07:44:31,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:31,894 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:31,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:31,901 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 07:44:31,904 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 07:44:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:32,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:44:32,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:32,334 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 07:44:32,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:32,335 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:32,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700676601] [2022-01-10 07:44:32,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [700676601] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:32,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:32,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:44:32,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803087530] [2022-01-10 07:44:32,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:32,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:44:32,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:32,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:44:32,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:44:32,382 INFO L87 Difference]: Start difference. First operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 07:44:32,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:32,536 INFO L93 Difference]: Finished difference Result 4868 states and 8977 transitions. [2022-01-10 07:44:32,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:44:32,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 123 [2022-01-10 07:44:32,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:32,569 INFO L225 Difference]: With dead ends: 4868 [2022-01-10 07:44:32,569 INFO L226 Difference]: Without dead ends: 2373 [2022-01-10 07:44:32,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 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 07:44:32,581 INFO L933 BasicCegarLoop]: 4415 mSDtfsCounter, 380 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 8437 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 07:44:32,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 8437 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:44:32,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2022-01-10 07:44:32,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2373. [2022-01-10 07:44:32,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2373 states, 2344 states have (on average 1.83660409556314) internal successors, (4305), 2346 states have internal predecessors, (4305), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-10 07:44:32,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 4347 transitions. [2022-01-10 07:44:32,721 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 4347 transitions. Word has length 123 [2022-01-10 07:44:32,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:32,722 INFO L470 AbstractCegarLoop]: Abstraction has 2373 states and 4347 transitions. [2022-01-10 07:44:32,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 07:44:32,723 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 4347 transitions. [2022-01-10 07:44:32,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:44:32,726 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:32,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:44:32,738 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 07:44:32,935 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 07:44:32,936 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:32,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:32,937 INFO L85 PathProgramCache]: Analyzing trace with hash 796600300, now seen corresponding path program 1 times [2022-01-10 07:44:32,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:32,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651436067] [2022-01-10 07:44:32,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:32,940 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:32,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:32,942 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 07:44:32,944 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 07:44:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:33,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:33,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:33,380 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 07:44:33,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:33,382 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:33,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651436067] [2022-01-10 07:44:33,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651436067] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:33,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:33,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:44:33,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070577428] [2022-01-10 07:44:33,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:33,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:33,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:33,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:33,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:33,391 INFO L87 Difference]: Start difference. First operand 2373 states and 4347 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 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 07:44:33,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:33,984 INFO L93 Difference]: Finished difference Result 2875 states and 5135 transitions. [2022-01-10 07:44:33,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:44:33,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 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 123 [2022-01-10 07:44:33,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:34,000 INFO L225 Difference]: With dead ends: 2875 [2022-01-10 07:44:34,001 INFO L226 Difference]: Without dead ends: 2638 [2022-01-10 07:44:34,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 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 07:44:34,004 INFO L933 BasicCegarLoop]: 4377 mSDtfsCounter, 4680 mSDsluCounter, 8677 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4695 SdHoareTripleChecker+Valid, 13054 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:34,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4695 Valid, 13054 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 07:44:34,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2638 states. [2022-01-10 07:44:34,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2638 to 2619. [2022-01-10 07:44:34,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2567 states have (on average 1.8137904168289833) internal successors, (4656), 2570 states have internal predecessors, (4656), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2022-01-10 07:44:34,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4731 transitions. [2022-01-10 07:44:34,072 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4731 transitions. Word has length 123 [2022-01-10 07:44:34,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:34,073 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 4731 transitions. [2022-01-10 07:44:34,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 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 07:44:34,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4731 transitions. [2022-01-10 07:44:34,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:44:34,075 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:34,075 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:44:34,090 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 07:44:34,275 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 07:44:34,276 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:34,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:34,277 INFO L85 PathProgramCache]: Analyzing trace with hash 71036272, now seen corresponding path program 1 times [2022-01-10 07:44:34,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:34,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78695633] [2022-01-10 07:44:34,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:34,278 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:34,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:34,279 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 07:44:34,281 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 07:44:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:34,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:34,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:34,611 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 07:44:34,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:34,612 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:34,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78695633] [2022-01-10 07:44:34,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [78695633] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:34,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:34,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:44:34,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77472890] [2022-01-10 07:44:34,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:34,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:34,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:34,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:34,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:34,614 INFO L87 Difference]: Start difference. First operand 2619 states and 4731 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 07:44:34,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:34,966 INFO L93 Difference]: Finished difference Result 3102 states and 5487 transitions. [2022-01-10 07:44:34,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:44:34,967 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 123 [2022-01-10 07:44:34,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:34,977 INFO L225 Difference]: With dead ends: 3102 [2022-01-10 07:44:34,977 INFO L226 Difference]: Without dead ends: 2619 [2022-01-10 07:44:34,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 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 07:44:34,982 INFO L933 BasicCegarLoop]: 4320 mSDtfsCounter, 4471 mSDsluCounter, 8331 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4486 SdHoareTripleChecker+Valid, 12651 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:34,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4486 Valid, 12651 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:44:34,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2022-01-10 07:44:35,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 2619. [2022-01-10 07:44:35,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2567 states have (on average 1.8110634982469809) internal successors, (4649), 2570 states have internal predecessors, (4649), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2022-01-10 07:44:35,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4724 transitions. [2022-01-10 07:44:35,056 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4724 transitions. Word has length 123 [2022-01-10 07:44:35,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:35,056 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 4724 transitions. [2022-01-10 07:44:35,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 07:44:35,056 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4724 transitions. [2022-01-10 07:44:35,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:44:35,058 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:35,058 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:44:35,070 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 07:44:35,268 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 07:44:35,268 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:35,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:35,269 INFO L85 PathProgramCache]: Analyzing trace with hash -783653012, now seen corresponding path program 1 times [2022-01-10 07:44:35,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:35,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31023345] [2022-01-10 07:44:35,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:35,270 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:35,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:35,271 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 07:44:35,271 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 07:44:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:35,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:35,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:35,591 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 07:44:35,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:35,591 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:35,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [31023345] [2022-01-10 07:44:35,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [31023345] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:35,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:35,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:44:35,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636404622] [2022-01-10 07:44:35,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:35,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:35,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:35,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:35,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:35,594 INFO L87 Difference]: Start difference. First operand 2619 states and 4724 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 07:44:35,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:35,987 INFO L93 Difference]: Finished difference Result 3102 states and 5473 transitions. [2022-01-10 07:44:35,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:44:35,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 123 [2022-01-10 07:44:35,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:35,998 INFO L225 Difference]: With dead ends: 3102 [2022-01-10 07:44:35,999 INFO L226 Difference]: Without dead ends: 2619 [2022-01-10 07:44:36,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 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 07:44:36,002 INFO L933 BasicCegarLoop]: 4317 mSDtfsCounter, 4465 mSDsluCounter, 8327 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4480 SdHoareTripleChecker+Valid, 12644 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:36,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4480 Valid, 12644 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:44:36,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2022-01-10 07:44:36,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 2619. [2022-01-10 07:44:36,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2567 states have (on average 1.8083365796649786) internal successors, (4642), 2570 states have internal predecessors, (4642), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2022-01-10 07:44:36,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4717 transitions. [2022-01-10 07:44:36,077 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4717 transitions. Word has length 123 [2022-01-10 07:44:36,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:36,077 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 4717 transitions. [2022-01-10 07:44:36,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 07:44:36,078 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4717 transitions. [2022-01-10 07:44:36,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:44:36,079 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:36,079 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:44:36,092 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 07:44:36,289 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 07:44:36,290 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:36,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:36,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1405533680, now seen corresponding path program 1 times [2022-01-10 07:44:36,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:36,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25514012] [2022-01-10 07:44:36,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:36,291 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:36,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:36,293 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 07:44:36,295 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 07:44:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:36,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:36,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:36,641 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 07:44:36,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:36,641 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:36,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25514012] [2022-01-10 07:44:36,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25514012] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:36,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:36,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:44:36,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906178663] [2022-01-10 07:44:36,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:36,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:36,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:36,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:36,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:36,643 INFO L87 Difference]: Start difference. First operand 2619 states and 4717 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 07:44:36,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:36,973 INFO L93 Difference]: Finished difference Result 3102 states and 5459 transitions. [2022-01-10 07:44:36,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:44:36,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 123 [2022-01-10 07:44:36,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:36,984 INFO L225 Difference]: With dead ends: 3102 [2022-01-10 07:44:36,984 INFO L226 Difference]: Without dead ends: 2619 [2022-01-10 07:44:36,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 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 07:44:36,987 INFO L933 BasicCegarLoop]: 4314 mSDtfsCounter, 4459 mSDsluCounter, 8323 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4474 SdHoareTripleChecker+Valid, 12637 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:36,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4474 Valid, 12637 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:44:36,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2022-01-10 07:44:37,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 2619. [2022-01-10 07:44:37,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2567 states have (on average 1.8056096610829762) internal successors, (4635), 2570 states have internal predecessors, (4635), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2022-01-10 07:44:37,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4710 transitions. [2022-01-10 07:44:37,059 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4710 transitions. Word has length 123 [2022-01-10 07:44:37,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:37,059 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 4710 transitions. [2022-01-10 07:44:37,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 07:44:37,060 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4710 transitions. [2022-01-10 07:44:37,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:44:37,061 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:37,061 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:44:37,074 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 07:44:37,271 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 07:44:37,272 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:37,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:37,273 INFO L85 PathProgramCache]: Analyzing trace with hash -186415380, now seen corresponding path program 1 times [2022-01-10 07:44:37,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:37,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2000953474] [2022-01-10 07:44:37,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:37,273 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:37,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:37,274 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 07:44:37,275 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 07:44:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:37,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:37,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:37,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:44:37,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:37,600 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:37,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2000953474] [2022-01-10 07:44:37,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2000953474] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:37,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:37,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:44:37,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821104811] [2022-01-10 07:44:37,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:37,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:37,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:37,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:37,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:37,602 INFO L87 Difference]: Start difference. First operand 2619 states and 4710 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 07:44:37,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:37,922 INFO L93 Difference]: Finished difference Result 3102 states and 5445 transitions. [2022-01-10 07:44:37,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:44:37,922 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 123 [2022-01-10 07:44:37,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:37,933 INFO L225 Difference]: With dead ends: 3102 [2022-01-10 07:44:37,933 INFO L226 Difference]: Without dead ends: 2619 [2022-01-10 07:44:37,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 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 07:44:37,936 INFO L933 BasicCegarLoop]: 4311 mSDtfsCounter, 4453 mSDsluCounter, 8319 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4468 SdHoareTripleChecker+Valid, 12630 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:37,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4468 Valid, 12630 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:44:37,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2022-01-10 07:44:37,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 2619. [2022-01-10 07:44:37,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2567 states have (on average 1.802882742500974) internal successors, (4628), 2570 states have internal predecessors, (4628), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2022-01-10 07:44:38,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4703 transitions. [2022-01-10 07:44:38,006 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4703 transitions. Word has length 123 [2022-01-10 07:44:38,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:38,007 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 4703 transitions. [2022-01-10 07:44:38,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 07:44:38,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4703 transitions. [2022-01-10 07:44:38,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:44:38,008 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:38,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:44:38,019 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 07:44:38,219 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 07:44:38,219 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:38,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:38,220 INFO L85 PathProgramCache]: Analyzing trace with hash -791957904, now seen corresponding path program 1 times [2022-01-10 07:44:38,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:38,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091446421] [2022-01-10 07:44:38,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:38,221 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:38,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:38,222 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 07:44:38,223 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 07:44:38,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:38,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:38,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:38,529 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 07:44:38,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:38,529 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:38,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1091446421] [2022-01-10 07:44:38,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1091446421] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:38,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:38,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:44:38,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948737411] [2022-01-10 07:44:38,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:38,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:38,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:38,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:38,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:38,531 INFO L87 Difference]: Start difference. First operand 2619 states and 4703 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 07:44:38,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:38,838 INFO L93 Difference]: Finished difference Result 3102 states and 5431 transitions. [2022-01-10 07:44:38,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:44:38,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 123 [2022-01-10 07:44:38,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:38,849 INFO L225 Difference]: With dead ends: 3102 [2022-01-10 07:44:38,849 INFO L226 Difference]: Without dead ends: 2619 [2022-01-10 07:44:38,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 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 07:44:38,852 INFO L933 BasicCegarLoop]: 4308 mSDtfsCounter, 4447 mSDsluCounter, 8315 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4462 SdHoareTripleChecker+Valid, 12623 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:38,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4462 Valid, 12623 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:44:38,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2022-01-10 07:44:38,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 2619. [2022-01-10 07:44:38,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2567 states have (on average 1.8001558239189717) internal successors, (4621), 2570 states have internal predecessors, (4621), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2022-01-10 07:44:38,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4696 transitions. [2022-01-10 07:44:38,914 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4696 transitions. Word has length 123 [2022-01-10 07:44:38,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:38,914 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 4696 transitions. [2022-01-10 07:44:38,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 07:44:38,915 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4696 transitions. [2022-01-10 07:44:38,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:44:38,916 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:38,916 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:38,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 07:44:39,129 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 07:44:39,130 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:39,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:39,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1128171116, now seen corresponding path program 1 times [2022-01-10 07:44:39,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:39,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610368116] [2022-01-10 07:44:39,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:39,131 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:39,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:39,133 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 07:44:39,135 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 07:44:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:39,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:39,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:39,420 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 07:44:39,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:39,420 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:39,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610368116] [2022-01-10 07:44:39,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610368116] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:39,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:39,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:44:39,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680460606] [2022-01-10 07:44:39,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:39,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:39,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:39,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:39,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:39,422 INFO L87 Difference]: Start difference. First operand 2619 states and 4696 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 07:44:39,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:39,735 INFO L93 Difference]: Finished difference Result 3102 states and 5417 transitions. [2022-01-10 07:44:39,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:44:39,736 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 123 [2022-01-10 07:44:39,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:39,746 INFO L225 Difference]: With dead ends: 3102 [2022-01-10 07:44:39,747 INFO L226 Difference]: Without dead ends: 2619 [2022-01-10 07:44:39,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 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 07:44:39,750 INFO L933 BasicCegarLoop]: 4305 mSDtfsCounter, 4440 mSDsluCounter, 8311 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4455 SdHoareTripleChecker+Valid, 12616 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:39,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4455 Valid, 12616 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:44:39,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2022-01-10 07:44:39,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 2619. [2022-01-10 07:44:39,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2567 states have (on average 1.7974289053369692) internal successors, (4614), 2570 states have internal predecessors, (4614), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2022-01-10 07:44:39,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4689 transitions. [2022-01-10 07:44:39,826 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4689 transitions. Word has length 123 [2022-01-10 07:44:39,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:39,826 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 4689 transitions. [2022-01-10 07:44:39,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 07:44:39,826 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4689 transitions. [2022-01-10 07:44:39,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:44:39,827 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:39,828 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:44:39,840 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 07:44:40,038 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 07:44:40,038 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:40,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:40,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1287705240, now seen corresponding path program 1 times [2022-01-10 07:44:40,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:40,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1465833582] [2022-01-10 07:44:40,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:40,039 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:40,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:40,040 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 07:44:40,042 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 07:44:40,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:40,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:40,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:40,394 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 07:44:40,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:40,395 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:40,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1465833582] [2022-01-10 07:44:40,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1465833582] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:40,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:40,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:44:40,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287558300] [2022-01-10 07:44:40,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:40,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:40,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:40,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:40,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:40,396 INFO L87 Difference]: Start difference. First operand 2619 states and 4689 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 07:44:40,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:40,793 INFO L93 Difference]: Finished difference Result 3224 states and 5591 transitions. [2022-01-10 07:44:40,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:44:40,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 123 [2022-01-10 07:44:40,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:40,805 INFO L225 Difference]: With dead ends: 3224 [2022-01-10 07:44:40,805 INFO L226 Difference]: Without dead ends: 2741 [2022-01-10 07:44:40,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 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 07:44:40,809 INFO L933 BasicCegarLoop]: 4302 mSDtfsCounter, 4510 mSDsluCounter, 8306 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4525 SdHoareTripleChecker+Valid, 12608 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:40,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4525 Valid, 12608 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:44:40,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2741 states. [2022-01-10 07:44:40,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2741 to 2741. [2022-01-10 07:44:40,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2741 states, 2683 states have (on average 1.7774878866939992) internal successors, (4769), 2686 states have internal predecessors, (4769), 39 states have call successors, (39), 16 states have call predecessors, (39), 17 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 07:44:40,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 4848 transitions. [2022-01-10 07:44:40,883 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 4848 transitions. Word has length 123 [2022-01-10 07:44:40,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:40,884 INFO L470 AbstractCegarLoop]: Abstraction has 2741 states and 4848 transitions. [2022-01-10 07:44:40,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 07:44:40,884 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 4848 transitions. [2022-01-10 07:44:40,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:44:40,885 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:40,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:44:40,896 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 07:44:41,095 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 07:44:41,095 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:41,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:41,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1019407277, now seen corresponding path program 1 times [2022-01-10 07:44:41,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:41,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [340305096] [2022-01-10 07:44:41,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:41,097 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:41,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:41,098 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 07:44:41,100 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 07:44:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:41,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:41,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:41,402 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 07:44:41,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:41,403 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:41,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [340305096] [2022-01-10 07:44:41,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [340305096] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:41,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:41,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:44:41,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775722088] [2022-01-10 07:44:41,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:41,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:41,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:41,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:41,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:41,404 INFO L87 Difference]: Start difference. First operand 2741 states and 4848 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 07:44:41,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:41,799 INFO L93 Difference]: Finished difference Result 3468 states and 5909 transitions. [2022-01-10 07:44:41,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:44:41,800 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 123 [2022-01-10 07:44:41,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:41,807 INFO L225 Difference]: With dead ends: 3468 [2022-01-10 07:44:41,808 INFO L226 Difference]: Without dead ends: 2863 [2022-01-10 07:44:41,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 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 07:44:41,811 INFO L933 BasicCegarLoop]: 4300 mSDtfsCounter, 4503 mSDsluCounter, 8302 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4518 SdHoareTripleChecker+Valid, 12602 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:41,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4518 Valid, 12602 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:44:41,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2022-01-10 07:44:41,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 2863. [2022-01-10 07:44:41,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2863 states, 2799 states have (on average 1.757770632368703) internal successors, (4920), 2802 states have internal predecessors, (4920), 41 states have call successors, (41), 20 states have call predecessors, (41), 21 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2022-01-10 07:44:41,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 5003 transitions. [2022-01-10 07:44:41,876 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 5003 transitions. Word has length 123 [2022-01-10 07:44:41,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:41,876 INFO L470 AbstractCegarLoop]: Abstraction has 2863 states and 5003 transitions. [2022-01-10 07:44:41,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 07:44:41,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 5003 transitions. [2022-01-10 07:44:41,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:44:41,878 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:41,878 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:44:41,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 07:44:42,088 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 07:44:42,088 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:42,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:42,088 INFO L85 PathProgramCache]: Analyzing trace with hash 24715689, now seen corresponding path program 1 times [2022-01-10 07:44:42,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:42,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829386324] [2022-01-10 07:44:42,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:42,089 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:42,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:42,090 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 07:44:42,091 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 07:44:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:42,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:42,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:42,400 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 07:44:42,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:42,400 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:42,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [829386324] [2022-01-10 07:44:42,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [829386324] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:42,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:42,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:44:42,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465550425] [2022-01-10 07:44:42,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:42,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:42,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:42,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:42,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:42,402 INFO L87 Difference]: Start difference. First operand 2863 states and 5003 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 07:44:42,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:42,778 INFO L93 Difference]: Finished difference Result 3712 states and 6219 transitions. [2022-01-10 07:44:42,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:44:42,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 123 [2022-01-10 07:44:42,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:42,792 INFO L225 Difference]: With dead ends: 3712 [2022-01-10 07:44:42,792 INFO L226 Difference]: Without dead ends: 2985 [2022-01-10 07:44:42,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 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 07:44:42,796 INFO L933 BasicCegarLoop]: 4295 mSDtfsCounter, 4497 mSDsluCounter, 8298 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4512 SdHoareTripleChecker+Valid, 12593 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:42,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4512 Valid, 12593 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:44:42,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2985 states. [2022-01-10 07:44:42,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2985 to 2985. [2022-01-10 07:44:42,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2985 states, 2915 states have (on average 1.7382504288164666) internal successors, (5067), 2918 states have internal predecessors, (5067), 43 states have call successors, (43), 24 states have call predecessors, (43), 25 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-01-10 07:44:42,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2985 states to 2985 states and 5154 transitions. [2022-01-10 07:44:42,864 INFO L78 Accepts]: Start accepts. Automaton has 2985 states and 5154 transitions. Word has length 123 [2022-01-10 07:44:42,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:42,864 INFO L470 AbstractCegarLoop]: Abstraction has 2985 states and 5154 transitions. [2022-01-10 07:44:42,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 07:44:42,865 INFO L276 IsEmpty]: Start isEmpty. Operand 2985 states and 5154 transitions. [2022-01-10 07:44:42,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:44:42,866 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:42,866 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:44:42,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-01-10 07:44:43,076 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 07:44:43,076 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:43,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:43,077 INFO L85 PathProgramCache]: Analyzing trace with hash -646329746, now seen corresponding path program 1 times [2022-01-10 07:44:43,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:43,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [485525752] [2022-01-10 07:44:43,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:43,077 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:43,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:43,078 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 07:44:43,080 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 07:44:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:43,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:43,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:43,362 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 07:44:43,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:43,363 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:43,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [485525752] [2022-01-10 07:44:43,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [485525752] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:43,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:43,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:44:43,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328518745] [2022-01-10 07:44:43,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:43,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:43,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:43,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:43,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:43,364 INFO L87 Difference]: Start difference. First operand 2985 states and 5154 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 07:44:43,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:43,703 INFO L93 Difference]: Finished difference Result 3956 states and 6521 transitions. [2022-01-10 07:44:43,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:44:43,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 123 [2022-01-10 07:44:43,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:43,710 INFO L225 Difference]: With dead ends: 3956 [2022-01-10 07:44:43,710 INFO L226 Difference]: Without dead ends: 3107 [2022-01-10 07:44:43,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 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 07:44:43,714 INFO L933 BasicCegarLoop]: 4292 mSDtfsCounter, 4490 mSDsluCounter, 8294 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4505 SdHoareTripleChecker+Valid, 12586 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:43,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4505 Valid, 12586 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:44:43,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3107 states. [2022-01-10 07:44:43,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3107 to 3107. [2022-01-10 07:44:43,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3107 states, 3031 states have (on average 1.7189046519300561) internal successors, (5210), 3034 states have internal predecessors, (5210), 45 states have call successors, (45), 28 states have call predecessors, (45), 29 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:44:43,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 5301 transitions. [2022-01-10 07:44:43,793 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 5301 transitions. Word has length 123 [2022-01-10 07:44:43,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:43,793 INFO L470 AbstractCegarLoop]: Abstraction has 3107 states and 5301 transitions. [2022-01-10 07:44:43,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 07:44:43,794 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 5301 transitions. [2022-01-10 07:44:43,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:44:43,795 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:43,795 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:43,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 07:44:44,007 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 07:44:44,007 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:44,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:44,008 INFO L85 PathProgramCache]: Analyzing trace with hash -261823893, now seen corresponding path program 1 times [2022-01-10 07:44:44,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:44,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2073954224] [2022-01-10 07:44:44,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:44,008 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:44,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:44,009 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 07:44:44,010 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 07:44:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:44,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:44,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:44,299 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 07:44:44,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:44,299 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:44,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2073954224] [2022-01-10 07:44:44,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2073954224] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:44,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:44,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:44:44,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030589641] [2022-01-10 07:44:44,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:44,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:44,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:44,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:44,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:44,301 INFO L87 Difference]: Start difference. First operand 3107 states and 5301 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 07:44:44,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:44,650 INFO L93 Difference]: Finished difference Result 4200 states and 6815 transitions. [2022-01-10 07:44:44,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:44:44,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 123 [2022-01-10 07:44:44,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:44,659 INFO L225 Difference]: With dead ends: 4200 [2022-01-10 07:44:44,659 INFO L226 Difference]: Without dead ends: 3229 [2022-01-10 07:44:44,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 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 07:44:44,663 INFO L933 BasicCegarLoop]: 4289 mSDtfsCounter, 4483 mSDsluCounter, 8290 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4498 SdHoareTripleChecker+Valid, 12579 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:44,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4498 Valid, 12579 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:44:44,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3229 states. [2022-01-10 07:44:44,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3229 to 3229. [2022-01-10 07:44:44,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3229 states, 3147 states have (on average 1.6997140133460438) internal successors, (5349), 3150 states have internal predecessors, (5349), 47 states have call successors, (47), 32 states have call predecessors, (47), 33 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 07:44:44,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3229 states to 3229 states and 5444 transitions. [2022-01-10 07:44:44,749 INFO L78 Accepts]: Start accepts. Automaton has 3229 states and 5444 transitions. Word has length 123 [2022-01-10 07:44:44,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:44,750 INFO L470 AbstractCegarLoop]: Abstraction has 3229 states and 5444 transitions. [2022-01-10 07:44:44,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 07:44:44,751 INFO L276 IsEmpty]: Start isEmpty. Operand 3229 states and 5444 transitions. [2022-01-10 07:44:44,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:44:44,752 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:44,752 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:44:44,762 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 07:44:44,962 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 07:44:44,962 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:44,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:44,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1344196079, now seen corresponding path program 1 times [2022-01-10 07:44:44,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:44,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [853156362] [2022-01-10 07:44:44,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:44,963 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:44,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:44,964 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 07:44:44,965 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 07:44:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:45,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:45,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:45,224 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 07:44:45,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:45,225 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:45,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [853156362] [2022-01-10 07:44:45,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [853156362] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:45,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:45,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:44:45,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243179689] [2022-01-10 07:44:45,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:45,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:45,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:45,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:45,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:45,226 INFO L87 Difference]: Start difference. First operand 3229 states and 5444 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 07:44:45,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:45,551 INFO L93 Difference]: Finished difference Result 4444 states and 7101 transitions. [2022-01-10 07:44:45,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:44:45,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 123 [2022-01-10 07:44:45,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:45,559 INFO L225 Difference]: With dead ends: 4444 [2022-01-10 07:44:45,560 INFO L226 Difference]: Without dead ends: 3351 [2022-01-10 07:44:45,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 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 07:44:45,563 INFO L933 BasicCegarLoop]: 4286 mSDtfsCounter, 4476 mSDsluCounter, 8286 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4491 SdHoareTripleChecker+Valid, 12572 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:45,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4491 Valid, 12572 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:44:45,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3351 states. [2022-01-10 07:44:45,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3351 to 3351. [2022-01-10 07:44:45,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3351 states, 3263 states have (on average 1.680661967514557) internal successors, (5484), 3266 states have internal predecessors, (5484), 49 states have call successors, (49), 36 states have call predecessors, (49), 37 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 07:44:45,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3351 states to 3351 states and 5583 transitions. [2022-01-10 07:44:45,647 INFO L78 Accepts]: Start accepts. Automaton has 3351 states and 5583 transitions. Word has length 123 [2022-01-10 07:44:45,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:45,648 INFO L470 AbstractCegarLoop]: Abstraction has 3351 states and 5583 transitions. [2022-01-10 07:44:45,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 07:44:45,648 INFO L276 IsEmpty]: Start isEmpty. Operand 3351 states and 5583 transitions. [2022-01-10 07:44:45,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:44:45,649 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:45,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:44:45,659 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 07:44:45,859 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 07:44:45,859 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:45,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:45,859 INFO L85 PathProgramCache]: Analyzing trace with hash 426421868, now seen corresponding path program 1 times [2022-01-10 07:44:45,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:45,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029555515] [2022-01-10 07:44:45,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:45,860 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:45,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:45,861 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 07:44:45,862 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 07:44:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:45,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:45,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:46,163 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 07:44:46,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:46,163 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:46,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029555515] [2022-01-10 07:44:46,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029555515] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:46,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:46,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:44:46,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659852730] [2022-01-10 07:44:46,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:46,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:46,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:46,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:46,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:46,165 INFO L87 Difference]: Start difference. First operand 3351 states and 5583 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 07:44:46,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:46,505 INFO L93 Difference]: Finished difference Result 4688 states and 7379 transitions. [2022-01-10 07:44:46,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:44:46,506 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 123 [2022-01-10 07:44:46,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:46,513 INFO L225 Difference]: With dead ends: 4688 [2022-01-10 07:44:46,513 INFO L226 Difference]: Without dead ends: 3473 [2022-01-10 07:44:46,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 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 07:44:46,519 INFO L933 BasicCegarLoop]: 4283 mSDtfsCounter, 4468 mSDsluCounter, 8282 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4483 SdHoareTripleChecker+Valid, 12565 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:46,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4483 Valid, 12565 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:44:46,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3473 states. [2022-01-10 07:44:46,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3473 to 3473. [2022-01-10 07:44:46,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3473 states, 3379 states have (on average 1.6617342408996745) internal successors, (5615), 3382 states have internal predecessors, (5615), 51 states have call successors, (51), 40 states have call predecessors, (51), 41 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2022-01-10 07:44:46,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3473 states to 3473 states and 5718 transitions. [2022-01-10 07:44:46,608 INFO L78 Accepts]: Start accepts. Automaton has 3473 states and 5718 transitions. Word has length 123 [2022-01-10 07:44:46,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:46,609 INFO L470 AbstractCegarLoop]: Abstraction has 3473 states and 5718 transitions. [2022-01-10 07:44:46,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 07:44:46,609 INFO L276 IsEmpty]: Start isEmpty. Operand 3473 states and 5718 transitions. [2022-01-10 07:44:46,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:44:46,610 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:46,611 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:44:46,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-01-10 07:44:46,820 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 07:44:46,820 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:46,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:46,821 INFO L85 PathProgramCache]: Analyzing trace with hash -910600343, now seen corresponding path program 1 times [2022-01-10 07:44:46,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:46,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067438404] [2022-01-10 07:44:46,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:46,821 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:46,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:46,823 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 07:44:46,824 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 07:44:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:46,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:46,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:47,122 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 07:44:47,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:47,123 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:47,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2067438404] [2022-01-10 07:44:47,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2067438404] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:47,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:47,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:44:47,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426057690] [2022-01-10 07:44:47,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:47,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:47,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:47,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:47,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:47,124 INFO L87 Difference]: Start difference. First operand 3473 states and 5718 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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 07:44:47,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:47,348 INFO L93 Difference]: Finished difference Result 5019 states and 7760 transitions. [2022-01-10 07:44:47,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:44:47,348 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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 123 [2022-01-10 07:44:47,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:47,355 INFO L225 Difference]: With dead ends: 5019 [2022-01-10 07:44:47,355 INFO L226 Difference]: Without dead ends: 3683 [2022-01-10 07:44:47,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 119 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 07:44:47,358 INFO L933 BasicCegarLoop]: 4305 mSDtfsCounter, 284 mSDsluCounter, 13024 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 17329 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 07:44:47,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 17329 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:44:47,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3683 states. [2022-01-10 07:44:47,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3683 to 3479. [2022-01-10 07:44:47,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3479 states, 3385 states have (on average 1.6564254062038404) internal successors, (5607), 3388 states have internal predecessors, (5607), 51 states have call successors, (51), 40 states have call predecessors, (51), 41 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2022-01-10 07:44:47,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3479 states to 3479 states and 5710 transitions. [2022-01-10 07:44:47,464 INFO L78 Accepts]: Start accepts. Automaton has 3479 states and 5710 transitions. Word has length 123 [2022-01-10 07:44:47,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:47,465 INFO L470 AbstractCegarLoop]: Abstraction has 3479 states and 5710 transitions. [2022-01-10 07:44:47,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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 07:44:47,465 INFO L276 IsEmpty]: Start isEmpty. Operand 3479 states and 5710 transitions. [2022-01-10 07:44:47,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:44:47,466 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:47,467 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:44:47,479 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 07:44:47,677 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 07:44:47,677 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:47,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:47,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1968438421, now seen corresponding path program 1 times [2022-01-10 07:44:47,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:47,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [939181051] [2022-01-10 07:44:47,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:47,678 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:47,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:47,680 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 07:44:47,682 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 07:44:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:47,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:47,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:47,978 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 07:44:47,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:47,979 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:47,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [939181051] [2022-01-10 07:44:47,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [939181051] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:47,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:47,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:44:47,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941961288] [2022-01-10 07:44:47,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:47,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:47,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:47,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:47,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:47,981 INFO L87 Difference]: Start difference. First operand 3479 states and 5710 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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 07:44:48,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:48,122 INFO L93 Difference]: Finished difference Result 5003 states and 7708 transitions. [2022-01-10 07:44:48,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:44:48,122 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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 123 [2022-01-10 07:44:48,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:48,131 INFO L225 Difference]: With dead ends: 5003 [2022-01-10 07:44:48,131 INFO L226 Difference]: Without dead ends: 3661 [2022-01-10 07:44:48,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 119 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 07:44:48,135 INFO L933 BasicCegarLoop]: 4305 mSDtfsCounter, 245 mSDsluCounter, 13009 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 17314 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 07:44:48,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 17314 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:44:48,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3661 states. [2022-01-10 07:44:48,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3661 to 3485. [2022-01-10 07:44:48,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3485 states, 3391 states have (on average 1.651135358301386) internal successors, (5599), 3394 states have internal predecessors, (5599), 51 states have call successors, (51), 40 states have call predecessors, (51), 41 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2022-01-10 07:44:48,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3485 states to 3485 states and 5702 transitions. [2022-01-10 07:44:48,243 INFO L78 Accepts]: Start accepts. Automaton has 3485 states and 5702 transitions. Word has length 123 [2022-01-10 07:44:48,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:48,243 INFO L470 AbstractCegarLoop]: Abstraction has 3485 states and 5702 transitions. [2022-01-10 07:44:48,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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 07:44:48,244 INFO L276 IsEmpty]: Start isEmpty. Operand 3485 states and 5702 transitions. [2022-01-10 07:44:48,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:44:48,245 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:48,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:44:48,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 07:44:48,454 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 07:44:48,455 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:48,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:48,455 INFO L85 PathProgramCache]: Analyzing trace with hash -234333971, now seen corresponding path program 1 times [2022-01-10 07:44:48,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:48,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [355626596] [2022-01-10 07:44:48,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:48,456 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:48,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:48,457 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 07:44:48,459 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 07:44:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:48,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:48,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:48,747 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 07:44:48,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:48,747 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:48,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [355626596] [2022-01-10 07:44:48,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [355626596] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:48,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:48,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:44:48,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772155102] [2022-01-10 07:44:48,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:48,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:48,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:48,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:48,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:48,749 INFO L87 Difference]: Start difference. First operand 3485 states and 5702 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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 07:44:48,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:48,881 INFO L93 Difference]: Finished difference Result 4987 states and 7656 transitions. [2022-01-10 07:44:48,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:44:48,882 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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 123 [2022-01-10 07:44:48,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:48,890 INFO L225 Difference]: With dead ends: 4987 [2022-01-10 07:44:48,890 INFO L226 Difference]: Without dead ends: 3639 [2022-01-10 07:44:48,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 119 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 07:44:48,893 INFO L933 BasicCegarLoop]: 4305 mSDtfsCounter, 206 mSDsluCounter, 12994 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 17299 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 07:44:48,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 17299 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:44:48,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3639 states. [2022-01-10 07:44:48,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3639 to 3491. [2022-01-10 07:44:48,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3491 states, 3397 states have (on average 1.645863997644981) internal successors, (5591), 3400 states have internal predecessors, (5591), 51 states have call successors, (51), 40 states have call predecessors, (51), 41 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2022-01-10 07:44:49,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3491 states to 3491 states and 5694 transitions. [2022-01-10 07:44:49,002 INFO L78 Accepts]: Start accepts. Automaton has 3491 states and 5694 transitions. Word has length 123 [2022-01-10 07:44:49,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:49,003 INFO L470 AbstractCegarLoop]: Abstraction has 3491 states and 5694 transitions. [2022-01-10 07:44:49,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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 07:44:49,003 INFO L276 IsEmpty]: Start isEmpty. Operand 3491 states and 5694 transitions. [2022-01-10 07:44:49,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:44:49,004 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:49,004 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:44:49,019 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 07:44:49,214 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 07:44:49,214 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:49,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:49,214 INFO L85 PathProgramCache]: Analyzing trace with hash -726960145, now seen corresponding path program 1 times [2022-01-10 07:44:49,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:49,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [502129887] [2022-01-10 07:44:49,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:49,215 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:49,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:49,216 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 07:44:49,254 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 07:44:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:49,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:49,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:49,496 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 07:44:49,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:49,497 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:49,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [502129887] [2022-01-10 07:44:49,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [502129887] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:49,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:49,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:44:49,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276436611] [2022-01-10 07:44:49,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:49,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:49,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:49,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:49,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:49,499 INFO L87 Difference]: Start difference. First operand 3491 states and 5694 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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 07:44:49,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:49,612 INFO L93 Difference]: Finished difference Result 4971 states and 7604 transitions. [2022-01-10 07:44:49,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:44:49,612 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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 123 [2022-01-10 07:44:49,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:49,620 INFO L225 Difference]: With dead ends: 4971 [2022-01-10 07:44:49,620 INFO L226 Difference]: Without dead ends: 3617 [2022-01-10 07:44:49,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 119 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 07:44:49,624 INFO L933 BasicCegarLoop]: 4305 mSDtfsCounter, 167 mSDsluCounter, 12979 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 17284 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 07:44:49,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 17284 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:44:49,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3617 states. [2022-01-10 07:44:49,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3617 to 3497. [2022-01-10 07:44:49,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3497 states, 3403 states have (on average 1.6406112253893623) internal successors, (5583), 3406 states have internal predecessors, (5583), 51 states have call successors, (51), 40 states have call predecessors, (51), 41 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2022-01-10 07:44:49,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3497 states to 3497 states and 5686 transitions. [2022-01-10 07:44:49,798 INFO L78 Accepts]: Start accepts. Automaton has 3497 states and 5686 transitions. Word has length 123 [2022-01-10 07:44:49,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:49,798 INFO L470 AbstractCegarLoop]: Abstraction has 3497 states and 5686 transitions. [2022-01-10 07:44:49,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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 07:44:49,798 INFO L276 IsEmpty]: Start isEmpty. Operand 3497 states and 5686 transitions. [2022-01-10 07:44:49,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:44:49,799 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:49,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:44:49,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-01-10 07:44:50,008 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 07:44:50,009 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:50,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:50,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1144356751, now seen corresponding path program 1 times [2022-01-10 07:44:50,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:50,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29687196] [2022-01-10 07:44:50,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:50,010 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:50,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:50,011 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 07:44:50,013 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 07:44:50,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:50,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:50,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:50,280 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 07:44:50,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:50,280 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:50,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29687196] [2022-01-10 07:44:50,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29687196] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:50,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:50,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:44:50,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008460884] [2022-01-10 07:44:50,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:50,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:50,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:50,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:50,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:50,283 INFO L87 Difference]: Start difference. First operand 3497 states and 5686 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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 07:44:50,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:50,400 INFO L93 Difference]: Finished difference Result 4927 states and 7516 transitions. [2022-01-10 07:44:50,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:44:50,400 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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 123 [2022-01-10 07:44:50,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:50,409 INFO L225 Difference]: With dead ends: 4927 [2022-01-10 07:44:50,409 INFO L226 Difference]: Without dead ends: 3567 [2022-01-10 07:44:50,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 119 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 07:44:50,413 INFO L933 BasicCegarLoop]: 4305 mSDtfsCounter, 89 mSDsluCounter, 12949 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 17254 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 07:44:50,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 17254 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:44:50,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3567 states. [2022-01-10 07:44:50,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3567 to 3503. [2022-01-10 07:44:50,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3503 states, 3409 states have (on average 1.635376943385157) internal successors, (5575), 3412 states have internal predecessors, (5575), 51 states have call successors, (51), 40 states have call predecessors, (51), 41 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2022-01-10 07:44:50,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3503 states to 3503 states and 5678 transitions. [2022-01-10 07:44:50,524 INFO L78 Accepts]: Start accepts. Automaton has 3503 states and 5678 transitions. Word has length 123 [2022-01-10 07:44:50,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:50,524 INFO L470 AbstractCegarLoop]: Abstraction has 3503 states and 5678 transitions. [2022-01-10 07:44:50,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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 07:44:50,524 INFO L276 IsEmpty]: Start isEmpty. Operand 3503 states and 5678 transitions. [2022-01-10 07:44:50,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:44:50,525 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:50,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:50,535 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 07:44:50,735 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 07:44:50,735 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:50,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:50,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1122024435, now seen corresponding path program 1 times [2022-01-10 07:44:50,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:50,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563621172] [2022-01-10 07:44:50,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:50,736 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:50,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:50,738 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 07:44:50,739 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 07:44:50,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:50,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:50,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:51,044 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 07:44:51,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:51,045 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:51,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1563621172] [2022-01-10 07:44:51,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1563621172] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:51,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:51,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:44:51,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719897758] [2022-01-10 07:44:51,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:51,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:51,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:51,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:51,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:51,047 INFO L87 Difference]: Start difference. First operand 3503 states and 5678 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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 07:44:51,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:51,190 INFO L93 Difference]: Finished difference Result 5205 states and 7836 transitions. [2022-01-10 07:44:51,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:44:51,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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 123 [2022-01-10 07:44:51,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:51,200 INFO L225 Difference]: With dead ends: 5205 [2022-01-10 07:44:51,201 INFO L226 Difference]: Without dead ends: 3839 [2022-01-10 07:44:51,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 119 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 07:44:51,204 INFO L933 BasicCegarLoop]: 4305 mSDtfsCounter, 50 mSDsluCounter, 12934 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 17239 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 07:44:51,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 17239 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:44:51,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3839 states. [2022-01-10 07:44:51,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3839 to 3551. [2022-01-10 07:44:51,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3551 states, 3457 states have (on average 1.6265548163147237) internal successors, (5623), 3460 states have internal predecessors, (5623), 51 states have call successors, (51), 40 states have call predecessors, (51), 41 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2022-01-10 07:44:51,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3551 states to 3551 states and 5726 transitions. [2022-01-10 07:44:51,332 INFO L78 Accepts]: Start accepts. Automaton has 3551 states and 5726 transitions. Word has length 123 [2022-01-10 07:44:51,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:51,332 INFO L470 AbstractCegarLoop]: Abstraction has 3551 states and 5726 transitions. [2022-01-10 07:44:51,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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 07:44:51,332 INFO L276 IsEmpty]: Start isEmpty. Operand 3551 states and 5726 transitions. [2022-01-10 07:44:51,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:44:51,333 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:51,333 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:44:51,343 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 07:44:51,543 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 07:44:51,543 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:51,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:51,544 INFO L85 PathProgramCache]: Analyzing trace with hash 2015510773, now seen corresponding path program 1 times [2022-01-10 07:44:51,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:51,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1565183683] [2022-01-10 07:44:51,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:51,544 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:51,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:51,546 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 07:44:51,547 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 07:44:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:51,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:51,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:51,799 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 07:44:51,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:51,800 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:51,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1565183683] [2022-01-10 07:44:51,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1565183683] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:51,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:51,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:44:51,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286427652] [2022-01-10 07:44:51,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:51,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:51,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:51,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:51,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:51,801 INFO L87 Difference]: Start difference. First operand 3551 states and 5726 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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 07:44:51,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:51,905 INFO L93 Difference]: Finished difference Result 4979 states and 7520 transitions. [2022-01-10 07:44:51,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:44:51,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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 123 [2022-01-10 07:44:51,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:51,914 INFO L225 Difference]: With dead ends: 4979 [2022-01-10 07:44:51,915 INFO L226 Difference]: Without dead ends: 3565 [2022-01-10 07:44:51,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 119 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 07:44:51,918 INFO L933 BasicCegarLoop]: 4305 mSDtfsCounter, 10 mSDsluCounter, 12914 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 17219 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 07:44:51,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 17219 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:44:51,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3565 states. [2022-01-10 07:44:52,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3565 to 3557. [2022-01-10 07:44:52,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 3463 states have (on average 1.6214265088073925) internal successors, (5615), 3466 states have internal predecessors, (5615), 51 states have call successors, (51), 40 states have call predecessors, (51), 41 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2022-01-10 07:44:52,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 5718 transitions. [2022-01-10 07:44:52,085 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 5718 transitions. Word has length 123 [2022-01-10 07:44:52,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:52,086 INFO L470 AbstractCegarLoop]: Abstraction has 3557 states and 5718 transitions. [2022-01-10 07:44:52,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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 07:44:52,086 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 5718 transitions. [2022-01-10 07:44:52,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:44:52,087 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:52,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:44:52,096 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 07:44:52,296 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 07:44:52,297 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:52,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:52,297 INFO L85 PathProgramCache]: Analyzing trace with hash 170143607, now seen corresponding path program 1 times [2022-01-10 07:44:52,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:52,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [179721486] [2022-01-10 07:44:52,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:52,298 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:52,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:52,299 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 07:44:52,301 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 07:44:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:52,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:44:52,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:52,617 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 07:44:52,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:52,617 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:52,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [179721486] [2022-01-10 07:44:52,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [179721486] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:52,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:52,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:44:52,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301680619] [2022-01-10 07:44:52,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:52,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:44:52,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:52,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:44:52,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:44:52,619 INFO L87 Difference]: Start difference. First operand 3557 states and 5718 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 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 07:44:52,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:52,761 INFO L93 Difference]: Finished difference Result 6366 states and 9183 transitions. [2022-01-10 07:44:52,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:44:52,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 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 123 [2022-01-10 07:44:52,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:52,769 INFO L225 Difference]: With dead ends: 6366 [2022-01-10 07:44:52,769 INFO L226 Difference]: Without dead ends: 4946 [2022-01-10 07:44:52,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 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 07:44:52,774 INFO L933 BasicCegarLoop]: 4365 mSDtfsCounter, 4177 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4177 SdHoareTripleChecker+Valid, 4680 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 07:44:52,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4177 Valid, 4680 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:44:52,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4946 states. [2022-01-10 07:44:52,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4946 to 4944. [2022-01-10 07:44:52,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4944 states, 4762 states have (on average 1.510919781604368) internal successors, (7195), 4768 states have internal predecessors, (7195), 98 states have call successors, (98), 80 states have call predecessors, (98), 82 states have return successors, (100), 96 states have call predecessors, (100), 98 states have call successors, (100) [2022-01-10 07:44:52,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4944 states to 4944 states and 7393 transitions. [2022-01-10 07:44:52,988 INFO L78 Accepts]: Start accepts. Automaton has 4944 states and 7393 transitions. Word has length 123 [2022-01-10 07:44:52,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:52,989 INFO L470 AbstractCegarLoop]: Abstraction has 4944 states and 7393 transitions. [2022-01-10 07:44:52,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 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 07:44:52,989 INFO L276 IsEmpty]: Start isEmpty. Operand 4944 states and 7393 transitions. [2022-01-10 07:44:52,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-01-10 07:44:52,992 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:52,993 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, 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] [2022-01-10 07:44:53,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 07:44:53,202 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 07:44:53,202 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:53,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:53,202 INFO L85 PathProgramCache]: Analyzing trace with hash 211678619, now seen corresponding path program 1 times [2022-01-10 07:44:53,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:53,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906886182] [2022-01-10 07:44:53,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:53,203 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:53,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:53,204 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 07:44:53,204 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 07:44:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:53,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:44:53,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:53,680 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-01-10 07:44:53,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:53,681 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:53,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906886182] [2022-01-10 07:44:53,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906886182] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:53,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:53,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:44:53,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898063172] [2022-01-10 07:44:53,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:53,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:44:53,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:53,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:44:53,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:44:53,682 INFO L87 Difference]: Start difference. First operand 4944 states and 7393 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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 07:44:54,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:54,233 INFO L93 Difference]: Finished difference Result 10436 states and 14069 transitions. [2022-01-10 07:44:54,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:44:54,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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 200 [2022-01-10 07:44:54,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:54,247 INFO L225 Difference]: With dead ends: 10436 [2022-01-10 07:44:54,248 INFO L226 Difference]: Without dead ends: 7630 [2022-01-10 07:44:54,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 198 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 07:44:54,254 INFO L933 BasicCegarLoop]: 4448 mSDtfsCounter, 4406 mSDsluCounter, 4540 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4412 SdHoareTripleChecker+Valid, 8988 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:54,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4412 Valid, 8988 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:44:54,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7630 states. [2022-01-10 07:44:54,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7630 to 7628. [2022-01-10 07:44:54,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7628 states, 7275 states have (on average 1.4079725085910653) internal successors, (10243), 7290 states have internal predecessors, (10243), 187 states have call successors, (187), 152 states have call predecessors, (187), 164 states have return successors, (211), 187 states have call predecessors, (211), 187 states have call successors, (211) [2022-01-10 07:44:54,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7628 states to 7628 states and 10641 transitions. [2022-01-10 07:44:54,631 INFO L78 Accepts]: Start accepts. Automaton has 7628 states and 10641 transitions. Word has length 200 [2022-01-10 07:44:54,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:54,633 INFO L470 AbstractCegarLoop]: Abstraction has 7628 states and 10641 transitions. [2022-01-10 07:44:54,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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 07:44:54,633 INFO L276 IsEmpty]: Start isEmpty. Operand 7628 states and 10641 transitions. [2022-01-10 07:44:54,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-01-10 07:44:54,640 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:54,641 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, 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] [2022-01-10 07:44:54,654 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 07:44:54,851 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 07:44:54,851 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:54,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:54,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1573724643, now seen corresponding path program 1 times [2022-01-10 07:44:54,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:54,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673878049] [2022-01-10 07:44:54,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:54,852 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:54,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:54,853 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 07:44:54,854 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 07:44:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:54,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:44:54,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:55,178 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-01-10 07:44:55,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:55,179 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:55,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673878049] [2022-01-10 07:44:55,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673878049] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:55,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:55,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:44:55,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192024880] [2022-01-10 07:44:55,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:55,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:44:55,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:55,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:44:55,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:44:55,180 INFO L87 Difference]: Start difference. First operand 7628 states and 10641 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 07:44:55,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:55,544 INFO L93 Difference]: Finished difference Result 13108 states and 17278 transitions. [2022-01-10 07:44:55,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:44:55,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 200 [2022-01-10 07:44:55,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:55,558 INFO L225 Difference]: With dead ends: 13108 [2022-01-10 07:44:55,558 INFO L226 Difference]: Without dead ends: 7618 [2022-01-10 07:44:55,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:44:55,567 INFO L933 BasicCegarLoop]: 4306 mSDtfsCounter, 341 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 8264 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 07:44:55,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 8264 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:44:55,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7618 states. [2022-01-10 07:44:55,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7618 to 7618. [2022-01-10 07:44:55,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7618 states, 7268 states have (on average 1.4075399009356082) internal successors, (10230), 7282 states have internal predecessors, (10230), 184 states have call successors, (184), 152 states have call predecessors, (184), 164 states have return successors, (208), 184 states have call predecessors, (208), 184 states have call successors, (208) [2022-01-10 07:44:55,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7618 states to 7618 states and 10622 transitions. [2022-01-10 07:44:55,915 INFO L78 Accepts]: Start accepts. Automaton has 7618 states and 10622 transitions. Word has length 200 [2022-01-10 07:44:55,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:55,915 INFO L470 AbstractCegarLoop]: Abstraction has 7618 states and 10622 transitions. [2022-01-10 07:44:55,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 07:44:55,915 INFO L276 IsEmpty]: Start isEmpty. Operand 7618 states and 10622 transitions. [2022-01-10 07:44:55,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-01-10 07:44:55,920 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:55,921 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, 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] [2022-01-10 07:44:55,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-01-10 07:44:56,131 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 07:44:56,132 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:56,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:56,132 INFO L85 PathProgramCache]: Analyzing trace with hash -827998598, now seen corresponding path program 1 times [2022-01-10 07:44:56,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:56,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1174097792] [2022-01-10 07:44:56,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:56,133 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:56,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:56,134 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 07:44:56,135 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 07:44:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:56,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:44:56,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:56,578 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-01-10 07:44:56,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:56,579 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:56,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1174097792] [2022-01-10 07:44:56,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1174097792] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:56,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:56,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:44:56,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959803553] [2022-01-10 07:44:56,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:56,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:44:56,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:56,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:44:56,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:44:56,580 INFO L87 Difference]: Start difference. First operand 7618 states and 10622 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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 07:44:57,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:57,304 INFO L93 Difference]: Finished difference Result 18131 states and 23368 transitions. [2022-01-10 07:44:57,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:44:57,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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 201 [2022-01-10 07:44:57,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:57,327 INFO L225 Difference]: With dead ends: 18131 [2022-01-10 07:44:57,328 INFO L226 Difference]: Without dead ends: 12651 [2022-01-10 07:44:57,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 199 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 07:44:57,339 INFO L933 BasicCegarLoop]: 4431 mSDtfsCounter, 4401 mSDsluCounter, 4517 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4407 SdHoareTripleChecker+Valid, 8948 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:57,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4407 Valid, 8948 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:44:57,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12651 states. [2022-01-10 07:44:57,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12651 to 12649. [2022-01-10 07:44:57,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12649 states, 11976 states have (on average 1.3306613226452906) internal successors, (15936), 12007 states have internal predecessors, (15936), 351 states have call successors, (351), 288 states have call predecessors, (351), 320 states have return successors, (419), 355 states have call predecessors, (419), 351 states have call successors, (419) [2022-01-10 07:44:57,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12649 states to 12649 states and 16706 transitions. [2022-01-10 07:44:57,973 INFO L78 Accepts]: Start accepts. Automaton has 12649 states and 16706 transitions. Word has length 201 [2022-01-10 07:44:57,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:57,973 INFO L470 AbstractCegarLoop]: Abstraction has 12649 states and 16706 transitions. [2022-01-10 07:44:57,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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 07:44:57,973 INFO L276 IsEmpty]: Start isEmpty. Operand 12649 states and 16706 transitions. [2022-01-10 07:44:57,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-01-10 07:44:57,982 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:57,982 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, 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] [2022-01-10 07:44:57,996 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 07:44:58,192 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 07:44:58,193 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:58,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:58,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1681565436, now seen corresponding path program 1 times [2022-01-10 07:44:58,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:58,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330318743] [2022-01-10 07:44:58,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:58,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:58,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:58,195 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 07:44:58,197 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 07:44:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:58,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:44:58,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:58,548 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-01-10 07:44:58,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:58,548 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:58,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330318743] [2022-01-10 07:44:58,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1330318743] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:58,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:58,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:44:58,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106353091] [2022-01-10 07:44:58,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:58,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:44:58,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:58,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:44:58,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:44:58,549 INFO L87 Difference]: Start difference. First operand 12649 states and 16706 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 07:44:59,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:59,170 INFO L93 Difference]: Finished difference Result 23151 states and 29411 transitions. [2022-01-10 07:44:59,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:44:59,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 201 [2022-01-10 07:44:59,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:59,193 INFO L225 Difference]: With dead ends: 23151 [2022-01-10 07:44:59,193 INFO L226 Difference]: Without dead ends: 12640 [2022-01-10 07:44:59,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 199 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 07:44:59,211 INFO L933 BasicCegarLoop]: 4305 mSDtfsCounter, 339 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 8263 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 07:44:59,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 8263 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:44:59,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12640 states. [2022-01-10 07:44:59,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12640 to 12640. [2022-01-10 07:44:59,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12640 states, 11970 states have (on average 1.3304093567251463) internal successors, (15925), 12000 states have internal predecessors, (15925), 348 states have call successors, (348), 288 states have call predecessors, (348), 320 states have return successors, (416), 352 states have call predecessors, (416), 348 states have call successors, (416) [2022-01-10 07:44:59,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12640 states to 12640 states and 16689 transitions. [2022-01-10 07:44:59,846 INFO L78 Accepts]: Start accepts. Automaton has 12640 states and 16689 transitions. Word has length 201 [2022-01-10 07:44:59,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:59,846 INFO L470 AbstractCegarLoop]: Abstraction has 12640 states and 16689 transitions. [2022-01-10 07:44:59,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 07:44:59,847 INFO L276 IsEmpty]: Start isEmpty. Operand 12640 states and 16689 transitions. [2022-01-10 07:44:59,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-01-10 07:44:59,854 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:59,854 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, 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 07:44:59,866 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 07:45:00,064 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 07:45:00,064 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:00,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:00,064 INFO L85 PathProgramCache]: Analyzing trace with hash -657388809, now seen corresponding path program 1 times [2022-01-10 07:45:00,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:00,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290835240] [2022-01-10 07:45:00,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:00,065 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:00,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:00,066 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 07:45:00,067 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 07:45:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:00,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:45:00,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:00,510 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-01-10 07:45:00,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:00,510 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:00,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290835240] [2022-01-10 07:45:00,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290835240] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:00,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:00,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:45:00,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600008669] [2022-01-10 07:45:00,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:00,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:45:00,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:00,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:45:00,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:45:00,511 INFO L87 Difference]: Start difference. First operand 12640 states and 16689 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 07:45:01,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:01,781 INFO L93 Difference]: Finished difference Result 32756 states and 41049 transitions. [2022-01-10 07:45:01,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:45:01,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 202 [2022-01-10 07:45:01,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:01,816 INFO L225 Difference]: With dead ends: 32756 [2022-01-10 07:45:01,816 INFO L226 Difference]: Without dead ends: 22254 [2022-01-10 07:45:01,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 200 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 07:45:01,836 INFO L933 BasicCegarLoop]: 4420 mSDtfsCounter, 4394 mSDsluCounter, 4494 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4400 SdHoareTripleChecker+Valid, 8914 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:45:01,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4400 Valid, 8914 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:45:01,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22254 states. [2022-01-10 07:45:02,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22254 to 22252. [2022-01-10 07:45:02,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22252 states, 20963 states have (on average 1.279444735963364) internal successors, (26821), 21030 states have internal predecessors, (26821), 663 states have call successors, (663), 544 states have call predecessors, (663), 624 states have return successors, (827), 679 states have call predecessors, (827), 663 states have call successors, (827) [2022-01-10 07:45:03,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22252 states to 22252 states and 28311 transitions. [2022-01-10 07:45:03,027 INFO L78 Accepts]: Start accepts. Automaton has 22252 states and 28311 transitions. Word has length 202 [2022-01-10 07:45:03,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:03,028 INFO L470 AbstractCegarLoop]: Abstraction has 22252 states and 28311 transitions. [2022-01-10 07:45:03,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 07:45:03,028 INFO L276 IsEmpty]: Start isEmpty. Operand 22252 states and 28311 transitions. [2022-01-10 07:45:03,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-01-10 07:45:03,040 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:03,040 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, 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 07:45:03,053 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 07:45:03,251 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 07:45:03,251 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:03,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:03,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1852175225, now seen corresponding path program 1 times [2022-01-10 07:45:03,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:03,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601181918] [2022-01-10 07:45:03,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:03,252 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:03,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:03,253 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 07:45:03,254 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 07:45:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:03,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:45:03,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:03,608 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-01-10 07:45:03,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:03,608 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:03,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601181918] [2022-01-10 07:45:03,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601181918] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:03,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:03,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:45:03,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397320778] [2022-01-10 07:45:03,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:03,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:45:03,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:03,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:45:03,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:45:03,610 INFO L87 Difference]: Start difference. First operand 22252 states and 28311 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 07:45:04,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:04,947 INFO L93 Difference]: Finished difference Result 42358 states and 52624 transitions. [2022-01-10 07:45:04,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:45:04,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 202 [2022-01-10 07:45:04,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:04,997 INFO L225 Difference]: With dead ends: 42358 [2022-01-10 07:45:04,998 INFO L226 Difference]: Without dead ends: 22244 [2022-01-10 07:45:05,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:45:05,021 INFO L933 BasicCegarLoop]: 4304 mSDtfsCounter, 337 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 8262 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 07:45:05,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 8262 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:45:05,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22244 states. [2022-01-10 07:45:06,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22244 to 22244. [2022-01-10 07:45:06,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22244 states, 20958 states have (on average 1.2793205458536119) internal successors, (26812), 21024 states have internal predecessors, (26812), 660 states have call successors, (660), 544 states have call predecessors, (660), 624 states have return successors, (824), 676 states have call predecessors, (824), 660 states have call successors, (824) [2022-01-10 07:45:06,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22244 states to 22244 states and 28296 transitions. [2022-01-10 07:45:06,252 INFO L78 Accepts]: Start accepts. Automaton has 22244 states and 28296 transitions. Word has length 202 [2022-01-10 07:45:06,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:06,252 INFO L470 AbstractCegarLoop]: Abstraction has 22244 states and 28296 transitions. [2022-01-10 07:45:06,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 07:45:06,252 INFO L276 IsEmpty]: Start isEmpty. Operand 22244 states and 28296 transitions. [2022-01-10 07:45:06,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-01-10 07:45:06,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:06,261 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:45:06,269 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 07:45:06,461 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 07:45:06,462 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:06,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:06,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1389218530, now seen corresponding path program 1 times [2022-01-10 07:45:06,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:06,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [326915752] [2022-01-10 07:45:06,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:06,463 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:06,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:06,464 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 07:45:06,464 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 07:45:06,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:06,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:45:06,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:06,894 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-01-10 07:45:06,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:06,895 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:06,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [326915752] [2022-01-10 07:45:06,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [326915752] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:06,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:06,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:45:06,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535153498] [2022-01-10 07:45:06,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:06,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:45:06,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:06,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:45:06,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:45:06,897 INFO L87 Difference]: Start difference. First operand 22244 states and 28296 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 07:45:10,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:10,028 INFO L93 Difference]: Finished difference Result 67043 states and 82407 transitions. [2022-01-10 07:45:10,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:45:10,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 203 [2022-01-10 07:45:10,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:10,128 INFO L225 Difference]: With dead ends: 67043 [2022-01-10 07:45:10,129 INFO L226 Difference]: Without dead ends: 46937 [2022-01-10 07:45:10,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 201 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 07:45:10,161 INFO L933 BasicCegarLoop]: 4423 mSDtfsCounter, 4399 mSDsluCounter, 4476 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4405 SdHoareTripleChecker+Valid, 8899 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:45:10,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4405 Valid, 8899 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:45:10,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46937 states. [2022-01-10 07:45:12,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46937 to 45847. [2022-01-10 07:45:12,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45847 states, 42990 states have (on average 1.2425680390788556) internal successors, (53418), 43329 states have internal predecessors, (53418), 1255 states have call successors, (1255), 1024 states have call predecessors, (1255), 1600 states have return successors, (2060), 1495 states have call predecessors, (2060), 1255 states have call successors, (2060) [2022-01-10 07:45:13,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45847 states to 45847 states and 56733 transitions. [2022-01-10 07:45:13,075 INFO L78 Accepts]: Start accepts. Automaton has 45847 states and 56733 transitions. Word has length 203 [2022-01-10 07:45:13,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:13,076 INFO L470 AbstractCegarLoop]: Abstraction has 45847 states and 56733 transitions. [2022-01-10 07:45:13,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 07:45:13,076 INFO L276 IsEmpty]: Start isEmpty. Operand 45847 states and 56733 transitions. [2022-01-10 07:45:13,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-01-10 07:45:13,097 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:13,098 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:45:13,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-01-10 07:45:13,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:45:13,298 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:13,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:13,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1120345504, now seen corresponding path program 1 times [2022-01-10 07:45:13,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:13,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476564647] [2022-01-10 07:45:13,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:13,299 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:13,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:13,300 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:45:13,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-01-10 07:45:13,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:13,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:45:13,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:13,645 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-01-10 07:45:13,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:13,645 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:13,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476564647] [2022-01-10 07:45:13,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [476564647] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:13,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:13,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:45:13,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940157366] [2022-01-10 07:45:13,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:13,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:45:13,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:13,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:45:13,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:45:13,646 INFO L87 Difference]: Start difference. First operand 45847 states and 56733 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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)