/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_label43+token_ring.11.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:43:17,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:43:17,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:43:17,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:43:17,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:43:17,670 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:43:17,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:43:17,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:43:17,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:43:17,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:43:17,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:43:17,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:43:17,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:43:17,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:43:17,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:43:17,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:43:17,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:43:17,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:43:17,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:43:17,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:43:17,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:43:17,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:43:17,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:43:17,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:43:17,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 07:43:17,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:43:17,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:43:17,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:43:17,705 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 07:43:17,733 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:43:17,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:43:17,733 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:43:17,733 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:43:17,734 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:43:17,734 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:43:17,735 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:43:17,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:43:17,735 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:43:17,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:43:17,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:43:17,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:43:17,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:43:17,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:43:17,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:43:17,736 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:43:17,736 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:43:17,736 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:43:17,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:43:17,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:43:17,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:43:17,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:43:17,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:43:17,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:43:17,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:43:17,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:43:17,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:43:17,738 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:43:17,738 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:43:17,738 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:43:17,738 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:43:17,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:43:17,738 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:43:17,738 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:43:17,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:43:17,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:43:17,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:43:17,988 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:43:17,993 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:43:17,995 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.11.cil-1.c [2022-01-10 07:43:18,052 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/253f80579/8ecc6dc167914ce9806992dce696913e/FLAG12b2d0fdf [2022-01-10 07:43:18,873 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:43:18,873 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.11.cil-1.c [2022-01-10 07:43:18,923 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/253f80579/8ecc6dc167914ce9806992dce696913e/FLAG12b2d0fdf [2022-01-10 07:43:19,062 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/253f80579/8ecc6dc167914ce9806992dce696913e [2022-01-10 07:43:19,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:43:19,065 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:43:19,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:43:19,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:43:19,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:43:19,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:43:19" (1/1) ... [2022-01-10 07:43:19,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a7134f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:43:19, skipping insertion in model container [2022-01-10 07:43:19,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:43:19" (1/1) ... [2022-01-10 07:43:19,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:43:19,248 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:43:20,828 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_label43+token_ring.11.cil-1.c[381679,381692] [2022-01-10 07:43:20,881 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_label43+token_ring.11.cil-1.c[383339,383352] [2022-01-10 07:43:21,169 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:43:21,182 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:43:21,956 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_label43+token_ring.11.cil-1.c[381679,381692] [2022-01-10 07:43:21,961 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_label43+token_ring.11.cil-1.c[383339,383352] [2022-01-10 07:43:21,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:43:22,044 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:43:22,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:43:22 WrapperNode [2022-01-10 07:43:22,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:43:22,046 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:43:22,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:43:22,046 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:43:22,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:43:22" (1/1) ... [2022-01-10 07:43:22,166 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:43:22" (1/1) ... [2022-01-10 07:43:22,557 INFO L137 Inliner]: procedures = 67, calls = 75, calls flagged for inlining = 43, calls inlined = 43, statements flattened = 13105 [2022-01-10 07:43:22,558 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:43:22,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:43:22,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:43:22,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:43:22,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:43:22" (1/1) ... [2022-01-10 07:43:22,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:43:22" (1/1) ... [2022-01-10 07:43:22,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:43:22" (1/1) ... [2022-01-10 07:43:22,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:43:22" (1/1) ... [2022-01-10 07:43:22,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:43:22" (1/1) ... [2022-01-10 07:43:22,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:43:22" (1/1) ... [2022-01-10 07:43:22,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:43:22" (1/1) ... [2022-01-10 07:43:23,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:43:23,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:43:23,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:43:23,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:43:23,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:43:22" (1/1) ... [2022-01-10 07:43:23,049 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:43:23,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:43:23,073 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 07:43:23,096 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 07:43:23,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:43:23,108 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 07:43:23,108 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 07:43:23,109 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 07:43:23,109 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 07:43:23,109 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 07:43:23,109 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 07:43:23,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:43:23,109 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-01-10 07:43:23,109 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-01-10 07:43:23,109 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 07:43:23,109 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 07:43:23,109 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 07:43:23,109 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 07:43:23,109 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 07:43:23,109 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 07:43:23,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:43:23,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:43:23,236 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:43:23,237 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:43:31,529 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:43:31,561 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:43:31,562 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2022-01-10 07:43:31,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:43:31 BoogieIcfgContainer [2022-01-10 07:43:31,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:43:31,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:43:31,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:43:31,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:43:31,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:43:19" (1/3) ... [2022-01-10 07:43:31,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b1964f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:43:31, skipping insertion in model container [2022-01-10 07:43:31,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:43:22" (2/3) ... [2022-01-10 07:43:31,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b1964f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:43:31, skipping insertion in model container [2022-01-10 07:43:31,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:43:31" (3/3) ... [2022-01-10 07:43:31,578 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.11.cil-1.c [2022-01-10 07:43:31,583 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:43:31,583 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 07:43:31,640 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:43:31,646 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 07:43:31,646 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 07:43:31,703 INFO L276 IsEmpty]: Start isEmpty. Operand has 2548 states, 2511 states have (on average 1.8446833930704898) internal successors, (4632), 2516 states have internal predecessors, (4632), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-10 07:43:31,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:43:31,719 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:43:31,719 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:43:31,720 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:43:31,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:43:31,725 INFO L85 PathProgramCache]: Analyzing trace with hash 563980701, now seen corresponding path program 1 times [2022-01-10 07:43:31,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:43:31,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [688092047] [2022-01-10 07:43:31,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:43:31,737 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:43:31,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:43:31,740 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 07:43:31,747 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 07:43:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:43:32,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:43:32,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:43:32,409 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 07:43:32,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:43:32,410 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:43:32,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [688092047] [2022-01-10 07:43:32,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [688092047] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:43:32,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:43:32,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:43:32,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588553044] [2022-01-10 07:43:32,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:43:32,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:43:32,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:43:32,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:43:32,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:43:32,454 INFO L87 Difference]: Start difference. First operand has 2548 states, 2511 states have (on average 1.8446833930704898) internal successors, (4632), 2516 states have internal predecessors, (4632), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:32,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:43:32,647 INFO L93 Difference]: Finished difference Result 5083 states and 9349 transitions. [2022-01-10 07:43:32,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:43:32,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-01-10 07:43:32,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:43:32,675 INFO L225 Difference]: With dead ends: 5083 [2022-01-10 07:43:32,675 INFO L226 Difference]: Without dead ends: 2480 [2022-01-10 07:43:32,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:43:32,688 INFO L933 BasicCegarLoop]: 4591 mSDtfsCounter, 556 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 8613 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 07:43:32,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [556 Valid, 8613 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:43:32,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2022-01-10 07:43:32,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 2480. [2022-01-10 07:43:32,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2480 states, 2445 states have (on average 1.8286298568507158) internal successors, (4471), 2448 states have internal predecessors, (4471), 27 states have call successors, (27), 7 states have call predecessors, (27), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-10 07:43:32,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2480 states to 2480 states and 4523 transitions. [2022-01-10 07:43:32,844 INFO L78 Accepts]: Start accepts. Automaton has 2480 states and 4523 transitions. Word has length 168 [2022-01-10 07:43:32,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:43:32,845 INFO L470 AbstractCegarLoop]: Abstraction has 2480 states and 4523 transitions. [2022-01-10 07:43:32,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:32,846 INFO L276 IsEmpty]: Start isEmpty. Operand 2480 states and 4523 transitions. [2022-01-10 07:43:32,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:43:32,854 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:43:32,854 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:43:32,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 07:43:33,055 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 07:43:33,056 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:43:33,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:43:33,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1969172379, now seen corresponding path program 1 times [2022-01-10 07:43:33,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:43:33,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98765253] [2022-01-10 07:43:33,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:43:33,058 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:43:33,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:43:33,060 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 07:43:33,063 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 07:43:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:43:33,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:43:33,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:43:33,556 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 07:43:33,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:43:33,557 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:43:33,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98765253] [2022-01-10 07:43:33,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [98765253] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:43:33,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:43:33,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:43:33,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851644283] [2022-01-10 07:43:33,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:43:33,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:43:33,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:43:33,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:43:33,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:43:33,567 INFO L87 Difference]: Start difference. First operand 2480 states and 4523 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:34,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:43:34,418 INFO L93 Difference]: Finished difference Result 3204 states and 5679 transitions. [2022-01-10 07:43:34,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:43:34,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-01-10 07:43:34,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:43:34,433 INFO L225 Difference]: With dead ends: 3204 [2022-01-10 07:43:34,434 INFO L226 Difference]: Without dead ends: 2864 [2022-01-10 07:43:34,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 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 07:43:34,437 INFO L933 BasicCegarLoop]: 4569 mSDtfsCounter, 5034 mSDsluCounter, 9042 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5053 SdHoareTripleChecker+Valid, 13611 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 07:43:34,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5053 Valid, 13611 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 07:43:34,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2864 states. [2022-01-10 07:43:34,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2864 to 2835. [2022-01-10 07:43:34,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 2773 states have (on average 1.8016588532275515) internal successors, (4996), 2777 states have internal predecessors, (4996), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:43:34,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 5089 transitions. [2022-01-10 07:43:34,517 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 5089 transitions. Word has length 168 [2022-01-10 07:43:34,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:43:34,517 INFO L470 AbstractCegarLoop]: Abstraction has 2835 states and 5089 transitions. [2022-01-10 07:43:34,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:34,518 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 5089 transitions. [2022-01-10 07:43:34,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:43:34,524 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:43:34,524 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:43:34,538 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 07:43:34,735 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 07:43:34,736 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:43:34,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:43:34,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1403394409, now seen corresponding path program 1 times [2022-01-10 07:43:34,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:43:34,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338252299] [2022-01-10 07:43:34,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:43:34,737 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:43:34,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:43:34,739 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 07:43:34,741 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 07:43:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:43:34,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:43:34,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:43:35,215 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 07:43:35,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:43:35,216 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:43:35,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338252299] [2022-01-10 07:43:35,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1338252299] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:43:35,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:43:35,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:43:35,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712123423] [2022-01-10 07:43:35,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:43:35,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:43:35,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:43:35,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:43:35,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:43:35,220 INFO L87 Difference]: Start difference. First operand 2835 states and 5089 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:35,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:43:35,749 INFO L93 Difference]: Finished difference Result 3530 states and 6195 transitions. [2022-01-10 07:43:35,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:43:35,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-01-10 07:43:35,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:43:35,761 INFO L225 Difference]: With dead ends: 3530 [2022-01-10 07:43:35,761 INFO L226 Difference]: Without dead ends: 2835 [2022-01-10 07:43:35,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 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 07:43:35,765 INFO L933 BasicCegarLoop]: 4492 mSDtfsCounter, 4720 mSDsluCounter, 8533 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4739 SdHoareTripleChecker+Valid, 13025 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:43:35,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4739 Valid, 13025 Invalid, 296 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [36 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:43:35,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2022-01-10 07:43:35,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2835. [2022-01-10 07:43:35,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 2773 states have (on average 1.7991345113595385) internal successors, (4989), 2777 states have internal predecessors, (4989), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:43:35,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 5082 transitions. [2022-01-10 07:43:35,835 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 5082 transitions. Word has length 168 [2022-01-10 07:43:35,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:43:35,835 INFO L470 AbstractCegarLoop]: Abstraction has 2835 states and 5082 transitions. [2022-01-10 07:43:35,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:35,836 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 5082 transitions. [2022-01-10 07:43:35,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:43:35,838 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:43:35,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:43:35,856 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 07:43:36,049 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 07:43:36,049 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:43:36,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:43:36,050 INFO L85 PathProgramCache]: Analyzing trace with hash -403808229, now seen corresponding path program 1 times [2022-01-10 07:43:36,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:43:36,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1441045074] [2022-01-10 07:43:36,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:43:36,051 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:43:36,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:43:36,052 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 07:43:36,054 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 07:43:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:43:36,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:43:36,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:43:36,499 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 07:43:36,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:43:36,500 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:43:36,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1441045074] [2022-01-10 07:43:36,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1441045074] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:43:36,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:43:36,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:43:36,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822725959] [2022-01-10 07:43:36,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:43:36,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:43:36,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:43:36,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:43:36,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:43:36,506 INFO L87 Difference]: Start difference. First operand 2835 states and 5082 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:36,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:43:36,943 INFO L93 Difference]: Finished difference Result 3530 states and 6181 transitions. [2022-01-10 07:43:36,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:43:36,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-01-10 07:43:36,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:43:36,955 INFO L225 Difference]: With dead ends: 3530 [2022-01-10 07:43:36,956 INFO L226 Difference]: Without dead ends: 2835 [2022-01-10 07:43:36,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 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 07:43:36,960 INFO L933 BasicCegarLoop]: 4489 mSDtfsCounter, 4714 mSDsluCounter, 8529 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4733 SdHoareTripleChecker+Valid, 13018 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:43:36,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4733 Valid, 13018 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:43:36,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2022-01-10 07:43:37,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2835. [2022-01-10 07:43:37,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 2773 states have (on average 1.7966101694915255) internal successors, (4982), 2777 states have internal predecessors, (4982), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:43:37,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 5075 transitions. [2022-01-10 07:43:37,030 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 5075 transitions. Word has length 168 [2022-01-10 07:43:37,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:43:37,030 INFO L470 AbstractCegarLoop]: Abstraction has 2835 states and 5075 transitions. [2022-01-10 07:43:37,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:37,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 5075 transitions. [2022-01-10 07:43:37,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:43:37,033 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:43:37,033 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:43:37,046 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 07:43:37,246 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 07:43:37,247 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:43:37,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:43:37,249 INFO L85 PathProgramCache]: Analyzing trace with hash 182625815, now seen corresponding path program 1 times [2022-01-10 07:43:37,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:43:37,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1525147447] [2022-01-10 07:43:37,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:43:37,258 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:43:37,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:43:37,259 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 07:43:37,261 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 07:43:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:43:37,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:43:37,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:43:37,733 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 07:43:37,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:43:37,734 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:43:37,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1525147447] [2022-01-10 07:43:37,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1525147447] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:43:37,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:43:37,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:43:37,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520662088] [2022-01-10 07:43:37,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:43:37,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:43:37,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:43:37,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:43:37,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:43:37,736 INFO L87 Difference]: Start difference. First operand 2835 states and 5075 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:38,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:43:38,152 INFO L93 Difference]: Finished difference Result 3530 states and 6167 transitions. [2022-01-10 07:43:38,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:43:38,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-01-10 07:43:38,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:43:38,164 INFO L225 Difference]: With dead ends: 3530 [2022-01-10 07:43:38,164 INFO L226 Difference]: Without dead ends: 2835 [2022-01-10 07:43:38,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 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 07:43:38,168 INFO L933 BasicCegarLoop]: 4486 mSDtfsCounter, 4708 mSDsluCounter, 8525 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4727 SdHoareTripleChecker+Valid, 13011 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:43:38,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4727 Valid, 13011 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:43:38,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2022-01-10 07:43:38,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2835. [2022-01-10 07:43:38,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 2773 states have (on average 1.7940858276235125) internal successors, (4975), 2777 states have internal predecessors, (4975), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:43:38,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 5068 transitions. [2022-01-10 07:43:38,238 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 5068 transitions. Word has length 168 [2022-01-10 07:43:38,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:43:38,238 INFO L470 AbstractCegarLoop]: Abstraction has 2835 states and 5068 transitions. [2022-01-10 07:43:38,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:38,238 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 5068 transitions. [2022-01-10 07:43:38,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:43:38,240 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:43:38,240 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:43:38,251 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 07:43:38,451 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 07:43:38,452 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:43:38,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:43:38,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1032827035, now seen corresponding path program 1 times [2022-01-10 07:43:38,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:43:38,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124532854] [2022-01-10 07:43:38,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:43:38,453 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:43:38,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:43:38,455 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 07:43:38,457 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 07:43:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:43:38,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:43:38,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:43:38,869 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 07:43:38,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:43:38,869 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:43:38,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1124532854] [2022-01-10 07:43:38,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1124532854] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:43:38,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:43:38,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:43:38,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288226224] [2022-01-10 07:43:38,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:43:38,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:43:38,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:43:38,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:43:38,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:43:38,871 INFO L87 Difference]: Start difference. First operand 2835 states and 5068 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:39,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:43:39,279 INFO L93 Difference]: Finished difference Result 3530 states and 6153 transitions. [2022-01-10 07:43:39,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:43:39,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-01-10 07:43:39,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:43:39,291 INFO L225 Difference]: With dead ends: 3530 [2022-01-10 07:43:39,291 INFO L226 Difference]: Without dead ends: 2835 [2022-01-10 07:43:39,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 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 07:43:39,294 INFO L933 BasicCegarLoop]: 4483 mSDtfsCounter, 4702 mSDsluCounter, 8521 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4721 SdHoareTripleChecker+Valid, 13004 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:43:39,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4721 Valid, 13004 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:43:39,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2022-01-10 07:43:39,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2835. [2022-01-10 07:43:39,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 2773 states have (on average 1.7915614857554996) internal successors, (4968), 2777 states have internal predecessors, (4968), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:43:39,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 5061 transitions. [2022-01-10 07:43:39,364 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 5061 transitions. Word has length 168 [2022-01-10 07:43:39,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:43:39,365 INFO L470 AbstractCegarLoop]: Abstraction has 2835 states and 5061 transitions. [2022-01-10 07:43:39,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:39,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 5061 transitions. [2022-01-10 07:43:39,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:43:39,367 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:43:39,367 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:43:39,381 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 07:43:39,579 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 07:43:39,579 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:43:39,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:43:39,580 INFO L85 PathProgramCache]: Analyzing trace with hash -879409769, now seen corresponding path program 1 times [2022-01-10 07:43:39,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:43:39,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804259269] [2022-01-10 07:43:39,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:43:39,581 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:43:39,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:43:39,582 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 07:43:39,584 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 07:43:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:43:39,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:43:39,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:43:40,039 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 07:43:40,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:43:40,039 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:43:40,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804259269] [2022-01-10 07:43:40,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804259269] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:43:40,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:43:40,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:43:40,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322544401] [2022-01-10 07:43:40,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:43:40,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:43:40,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:43:40,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:43:40,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:43:40,042 INFO L87 Difference]: Start difference. First operand 2835 states and 5061 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:40,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:43:40,445 INFO L93 Difference]: Finished difference Result 3530 states and 6139 transitions. [2022-01-10 07:43:40,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:43:40,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-01-10 07:43:40,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:43:40,458 INFO L225 Difference]: With dead ends: 3530 [2022-01-10 07:43:40,458 INFO L226 Difference]: Without dead ends: 2835 [2022-01-10 07:43:40,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 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 07:43:40,462 INFO L933 BasicCegarLoop]: 4480 mSDtfsCounter, 4696 mSDsluCounter, 8517 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4715 SdHoareTripleChecker+Valid, 12997 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:43:40,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4715 Valid, 12997 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:43:40,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2022-01-10 07:43:40,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2835. [2022-01-10 07:43:40,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 2773 states have (on average 1.7890371438874866) internal successors, (4961), 2777 states have internal predecessors, (4961), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:43:40,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 5054 transitions. [2022-01-10 07:43:40,555 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 5054 transitions. Word has length 168 [2022-01-10 07:43:40,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:43:40,556 INFO L470 AbstractCegarLoop]: Abstraction has 2835 states and 5054 transitions. [2022-01-10 07:43:40,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:40,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 5054 transitions. [2022-01-10 07:43:40,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:43:40,558 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:43:40,559 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:43:40,574 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 07:43:40,774 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 07:43:40,775 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:43:40,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:43:40,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1414209819, now seen corresponding path program 1 times [2022-01-10 07:43:40,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:43:40,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926208436] [2022-01-10 07:43:40,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:43:40,777 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:43:40,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:43:40,778 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 07:43:40,780 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 07:43:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:43:40,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:43:40,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:43:41,196 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 07:43:41,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:43:41,197 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:43:41,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926208436] [2022-01-10 07:43:41,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926208436] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:43:41,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:43:41,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:43:41,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948307223] [2022-01-10 07:43:41,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:43:41,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:43:41,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:43:41,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:43:41,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:43:41,198 INFO L87 Difference]: Start difference. First operand 2835 states and 5054 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:41,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:43:41,585 INFO L93 Difference]: Finished difference Result 3530 states and 6125 transitions. [2022-01-10 07:43:41,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:43:41,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-01-10 07:43:41,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:43:41,607 INFO L225 Difference]: With dead ends: 3530 [2022-01-10 07:43:41,607 INFO L226 Difference]: Without dead ends: 2835 [2022-01-10 07:43:41,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 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 07:43:41,612 INFO L933 BasicCegarLoop]: 4477 mSDtfsCounter, 4689 mSDsluCounter, 8513 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4708 SdHoareTripleChecker+Valid, 12990 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:43:41,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4708 Valid, 12990 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:43:41,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2022-01-10 07:43:41,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2835. [2022-01-10 07:43:41,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 2773 states have (on average 1.7865128020194736) internal successors, (4954), 2777 states have internal predecessors, (4954), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:43:41,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 5047 transitions. [2022-01-10 07:43:41,678 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 5047 transitions. Word has length 168 [2022-01-10 07:43:41,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:43:41,678 INFO L470 AbstractCegarLoop]: Abstraction has 2835 states and 5047 transitions. [2022-01-10 07:43:41,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:41,678 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 5047 transitions. [2022-01-10 07:43:41,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:43:41,680 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:43:41,680 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:43:41,693 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 07:43:41,893 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 07:43:41,894 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:43:41,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:43:41,894 INFO L85 PathProgramCache]: Analyzing trace with hash 285871519, now seen corresponding path program 1 times [2022-01-10 07:43:41,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:43:41,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572294153] [2022-01-10 07:43:41,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:43:41,895 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:43:41,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:43:41,896 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 07:43:41,898 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 07:43:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:43:42,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:43:42,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:43:42,305 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 07:43:42,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:43:42,306 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:43:42,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572294153] [2022-01-10 07:43:42,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572294153] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:43:42,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:43:42,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:43:42,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720195242] [2022-01-10 07:43:42,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:43:42,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:43:42,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:43:42,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:43:42,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:43:42,307 INFO L87 Difference]: Start difference. First operand 2835 states and 5047 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:42,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:43:42,693 INFO L93 Difference]: Finished difference Result 3530 states and 6111 transitions. [2022-01-10 07:43:42,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:43:42,694 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-01-10 07:43:42,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:43:42,706 INFO L225 Difference]: With dead ends: 3530 [2022-01-10 07:43:42,706 INFO L226 Difference]: Without dead ends: 2835 [2022-01-10 07:43:42,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 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 07:43:42,716 INFO L933 BasicCegarLoop]: 4474 mSDtfsCounter, 4683 mSDsluCounter, 8509 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4702 SdHoareTripleChecker+Valid, 12983 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:43:42,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4702 Valid, 12983 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:43:42,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2022-01-10 07:43:42,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2835. [2022-01-10 07:43:42,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 2773 states have (on average 1.7839884601514606) internal successors, (4947), 2777 states have internal predecessors, (4947), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:43:42,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 5040 transitions. [2022-01-10 07:43:42,790 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 5040 transitions. Word has length 168 [2022-01-10 07:43:42,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:43:42,790 INFO L470 AbstractCegarLoop]: Abstraction has 2835 states and 5040 transitions. [2022-01-10 07:43:42,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:42,790 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 5040 transitions. [2022-01-10 07:43:42,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:43:42,792 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:43:42,793 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:43:42,805 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 07:43:43,003 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 07:43:43,004 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:43:43,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:43:43,004 INFO L85 PathProgramCache]: Analyzing trace with hash 2050588827, now seen corresponding path program 1 times [2022-01-10 07:43:43,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:43:43,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1838483229] [2022-01-10 07:43:43,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:43:43,005 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:43:43,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:43:43,007 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 07:43:43,009 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 07:43:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:43:43,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:43:43,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:43:43,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:43:43,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:43:43,418 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:43:43,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1838483229] [2022-01-10 07:43:43,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1838483229] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:43:43,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:43:43,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:43:43,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151803199] [2022-01-10 07:43:43,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:43:43,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:43:43,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:43:43,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:43:43,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:43:43,420 INFO L87 Difference]: Start difference. First operand 2835 states and 5040 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:43,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:43:43,807 INFO L93 Difference]: Finished difference Result 3530 states and 6097 transitions. [2022-01-10 07:43:43,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:43:43,809 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-01-10 07:43:43,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:43:43,816 INFO L225 Difference]: With dead ends: 3530 [2022-01-10 07:43:43,817 INFO L226 Difference]: Without dead ends: 2835 [2022-01-10 07:43:43,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 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 07:43:43,820 INFO L933 BasicCegarLoop]: 4471 mSDtfsCounter, 4677 mSDsluCounter, 8505 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4696 SdHoareTripleChecker+Valid, 12976 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:43:43,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4696 Valid, 12976 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:43:43,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2022-01-10 07:43:43,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2835. [2022-01-10 07:43:43,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 2773 states have (on average 1.7814641182834476) internal successors, (4940), 2777 states have internal predecessors, (4940), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:43:43,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 5033 transitions. [2022-01-10 07:43:43,886 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 5033 transitions. Word has length 168 [2022-01-10 07:43:43,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:43:43,887 INFO L470 AbstractCegarLoop]: Abstraction has 2835 states and 5033 transitions. [2022-01-10 07:43:43,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:43,887 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 5033 transitions. [2022-01-10 07:43:43,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:43:43,889 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:43:43,889 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:43:43,902 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 07:43:44,100 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 07:43:44,100 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:43:44,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:43:44,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1276231199, now seen corresponding path program 1 times [2022-01-10 07:43:44,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:43:44,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [712186233] [2022-01-10 07:43:44,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:43:44,102 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:43:44,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:43:44,103 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 07:43:44,105 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 07:43:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:43:44,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:43:44,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:43:44,517 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 07:43:44,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:43:44,517 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:43:44,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [712186233] [2022-01-10 07:43:44,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [712186233] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:43:44,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:43:44,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:43:44,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122867475] [2022-01-10 07:43:44,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:43:44,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:43:44,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:43:44,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:43:44,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:43:44,519 INFO L87 Difference]: Start difference. First operand 2835 states and 5033 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:44,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:43:44,898 INFO L93 Difference]: Finished difference Result 3530 states and 6083 transitions. [2022-01-10 07:43:44,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:43:44,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-01-10 07:43:44,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:43:44,904 INFO L225 Difference]: With dead ends: 3530 [2022-01-10 07:43:44,905 INFO L226 Difference]: Without dead ends: 2835 [2022-01-10 07:43:44,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 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 07:43:44,908 INFO L933 BasicCegarLoop]: 4468 mSDtfsCounter, 4671 mSDsluCounter, 8501 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4690 SdHoareTripleChecker+Valid, 12969 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:43:44,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4690 Valid, 12969 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:43:44,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2022-01-10 07:43:44,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2835. [2022-01-10 07:43:44,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 2773 states have (on average 1.7789397764154344) internal successors, (4933), 2777 states have internal predecessors, (4933), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:43:44,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 5026 transitions. [2022-01-10 07:43:44,983 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 5026 transitions. Word has length 168 [2022-01-10 07:43:44,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:43:44,984 INFO L470 AbstractCegarLoop]: Abstraction has 2835 states and 5026 transitions. [2022-01-10 07:43:44,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:44,984 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 5026 transitions. [2022-01-10 07:43:44,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:43:44,986 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:43:44,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:43:45,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 07:43:45,197 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 07:43:45,198 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:43:45,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:43:45,198 INFO L85 PathProgramCache]: Analyzing trace with hash -549863397, now seen corresponding path program 1 times [2022-01-10 07:43:45,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:43:45,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2082094115] [2022-01-10 07:43:45,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:43:45,199 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:43:45,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:43:45,200 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 07:43:45,239 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 07:43:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:43:45,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:43:45,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:43:45,600 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 07:43:45,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:43:45,600 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:43:45,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2082094115] [2022-01-10 07:43:45,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2082094115] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:43:45,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:43:45,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:43:45,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674805389] [2022-01-10 07:43:45,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:43:45,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:43:45,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:43:45,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:43:45,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:43:45,602 INFO L87 Difference]: Start difference. First operand 2835 states and 5026 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:46,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:43:46,004 INFO L93 Difference]: Finished difference Result 3530 states and 6069 transitions. [2022-01-10 07:43:46,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:43:46,007 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-01-10 07:43:46,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:43:46,014 INFO L225 Difference]: With dead ends: 3530 [2022-01-10 07:43:46,014 INFO L226 Difference]: Without dead ends: 2835 [2022-01-10 07:43:46,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 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 07:43:46,035 INFO L933 BasicCegarLoop]: 4465 mSDtfsCounter, 4665 mSDsluCounter, 8497 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4684 SdHoareTripleChecker+Valid, 12962 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:43:46,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4684 Valid, 12962 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:43:46,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2022-01-10 07:43:46,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2835. [2022-01-10 07:43:46,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 2773 states have (on average 1.7764154345474215) internal successors, (4926), 2777 states have internal predecessors, (4926), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:43:46,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 5019 transitions. [2022-01-10 07:43:46,097 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 5019 transitions. Word has length 168 [2022-01-10 07:43:46,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:43:46,097 INFO L470 AbstractCegarLoop]: Abstraction has 2835 states and 5019 transitions. [2022-01-10 07:43:46,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:46,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 5019 transitions. [2022-01-10 07:43:46,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:43:46,099 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:43:46,100 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:43:46,113 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 07:43:46,311 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 07:43:46,311 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:43:46,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:43:46,312 INFO L85 PathProgramCache]: Analyzing trace with hash 776703647, now seen corresponding path program 1 times [2022-01-10 07:43:46,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:43:46,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509990194] [2022-01-10 07:43:46,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:43:46,313 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:43:46,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:43:46,314 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 07:43:46,316 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 07:43:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:43:46,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:43:46,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:43:46,694 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 07:43:46,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:43:46,694 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:43:46,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509990194] [2022-01-10 07:43:46,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [509990194] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:43:46,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:43:46,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:43:46,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315169296] [2022-01-10 07:43:46,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:43:46,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:43:46,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:43:46,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:43:46,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:43:46,696 INFO L87 Difference]: Start difference. First operand 2835 states and 5019 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:47,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:43:47,161 INFO L93 Difference]: Finished difference Result 3708 states and 6331 transitions. [2022-01-10 07:43:47,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:43:47,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-01-10 07:43:47,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:43:47,170 INFO L225 Difference]: With dead ends: 3708 [2022-01-10 07:43:47,170 INFO L226 Difference]: Without dead ends: 3013 [2022-01-10 07:43:47,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 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 07:43:47,175 INFO L933 BasicCegarLoop]: 4462 mSDtfsCounter, 4775 mSDsluCounter, 8492 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4794 SdHoareTripleChecker+Valid, 12954 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:43:47,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4794 Valid, 12954 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:43:47,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3013 states. [2022-01-10 07:43:47,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3013 to 3013. [2022-01-10 07:43:47,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3013 states, 2945 states have (on average 1.7524617996604415) internal successors, (5161), 2949 states have internal predecessors, (5161), 49 states have call successors, (49), 17 states have call predecessors, (49), 17 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 07:43:47,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3013 states to 3013 states and 5258 transitions. [2022-01-10 07:43:47,245 INFO L78 Accepts]: Start accepts. Automaton has 3013 states and 5258 transitions. Word has length 168 [2022-01-10 07:43:47,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:43:47,245 INFO L470 AbstractCegarLoop]: Abstraction has 3013 states and 5258 transitions. [2022-01-10 07:43:47,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:47,246 INFO L276 IsEmpty]: Start isEmpty. Operand 3013 states and 5258 transitions. [2022-01-10 07:43:47,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:43:47,248 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:43:47,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:43:47,261 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 07:43:47,461 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 07:43:47,462 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:43:47,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:43:47,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1443232006, now seen corresponding path program 1 times [2022-01-10 07:43:47,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:43:47,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [6654729] [2022-01-10 07:43:47,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:43:47,463 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:43:47,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:43:47,464 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 07:43:47,465 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 07:43:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:43:47,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:43:47,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:43:47,816 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 07:43:47,816 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:43:47,816 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:43:47,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [6654729] [2022-01-10 07:43:47,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [6654729] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:43:47,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:43:47,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:43:47,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560373341] [2022-01-10 07:43:47,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:43:47,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:43:47,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:43:47,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:43:47,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:43:47,818 INFO L87 Difference]: Start difference. First operand 3013 states and 5258 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:48,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:43:48,374 INFO L93 Difference]: Finished difference Result 4064 states and 6809 transitions. [2022-01-10 07:43:48,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:43:48,374 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-01-10 07:43:48,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:43:48,382 INFO L225 Difference]: With dead ends: 4064 [2022-01-10 07:43:48,382 INFO L226 Difference]: Without dead ends: 3191 [2022-01-10 07:43:48,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 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 07:43:48,386 INFO L933 BasicCegarLoop]: 4460 mSDtfsCounter, 4768 mSDsluCounter, 8488 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4787 SdHoareTripleChecker+Valid, 12948 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:43:48,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4787 Valid, 12948 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:43:48,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3191 states. [2022-01-10 07:43:48,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3191 to 3191. [2022-01-10 07:43:48,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3191 states, 3117 states have (on average 1.7298684632659609) internal successors, (5392), 3121 states have internal predecessors, (5392), 51 states have call successors, (51), 21 states have call predecessors, (51), 21 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 07:43:48,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3191 states to 3191 states and 5493 transitions. [2022-01-10 07:43:48,461 INFO L78 Accepts]: Start accepts. Automaton has 3191 states and 5493 transitions. Word has length 168 [2022-01-10 07:43:48,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:43:48,461 INFO L470 AbstractCegarLoop]: Abstraction has 3191 states and 5493 transitions. [2022-01-10 07:43:48,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:48,461 INFO L276 IsEmpty]: Start isEmpty. Operand 3191 states and 5493 transitions. [2022-01-10 07:43:48,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:43:48,463 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:43:48,463 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:43:48,476 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 07:43:48,673 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 07:43:48,674 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:43:48,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:43:48,674 INFO L85 PathProgramCache]: Analyzing trace with hash -378165634, now seen corresponding path program 1 times [2022-01-10 07:43:48,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:43:48,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1476616990] [2022-01-10 07:43:48,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:43:48,675 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:43:48,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:43:48,676 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 07:43:48,679 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 07:43:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:43:48,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:43:48,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:43:49,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:43:49,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:43:49,085 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:43:49,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1476616990] [2022-01-10 07:43:49,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1476616990] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:43:49,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:43:49,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:43:49,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145496153] [2022-01-10 07:43:49,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:43:49,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:43:49,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:43:49,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:43:49,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:43:49,087 INFO L87 Difference]: Start difference. First operand 3191 states and 5493 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:49,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:43:49,648 INFO L93 Difference]: Finished difference Result 4420 states and 7279 transitions. [2022-01-10 07:43:49,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:43:49,649 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-01-10 07:43:49,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:43:49,658 INFO L225 Difference]: With dead ends: 4420 [2022-01-10 07:43:49,658 INFO L226 Difference]: Without dead ends: 3369 [2022-01-10 07:43:49,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 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 07:43:49,665 INFO L933 BasicCegarLoop]: 4455 mSDtfsCounter, 4761 mSDsluCounter, 8484 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4780 SdHoareTripleChecker+Valid, 12939 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:43:49,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4780 Valid, 12939 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:43:49,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3369 states. [2022-01-10 07:43:49,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3369 to 3369. [2022-01-10 07:43:49,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3369 states, 3289 states have (on average 1.7084220127698388) internal successors, (5619), 3293 states have internal predecessors, (5619), 53 states have call successors, (53), 25 states have call predecessors, (53), 25 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2022-01-10 07:43:49,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3369 states to 3369 states and 5724 transitions. [2022-01-10 07:43:49,754 INFO L78 Accepts]: Start accepts. Automaton has 3369 states and 5724 transitions. Word has length 168 [2022-01-10 07:43:49,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:43:49,756 INFO L470 AbstractCegarLoop]: Abstraction has 3369 states and 5724 transitions. [2022-01-10 07:43:49,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:49,756 INFO L276 IsEmpty]: Start isEmpty. Operand 3369 states and 5724 transitions. [2022-01-10 07:43:49,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:43:49,758 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:43:49,758 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:43:49,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 07:43:49,968 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 07:43:49,969 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:43:49,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:43:49,969 INFO L85 PathProgramCache]: Analyzing trace with hash -539891679, now seen corresponding path program 1 times [2022-01-10 07:43:49,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:43:49,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [583609346] [2022-01-10 07:43:49,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:43:49,970 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:43:49,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:43:49,971 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 07:43:49,971 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 07:43:50,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:43:50,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:43:50,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:43:50,297 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 07:43:50,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:43:50,297 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:43:50,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [583609346] [2022-01-10 07:43:50,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [583609346] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:43:50,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:43:50,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:43:50,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842533193] [2022-01-10 07:43:50,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:43:50,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:43:50,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:43:50,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:43:50,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:43:50,299 INFO L87 Difference]: Start difference. First operand 3369 states and 5724 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:50,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:43:50,837 INFO L93 Difference]: Finished difference Result 4776 states and 7741 transitions. [2022-01-10 07:43:50,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:43:50,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-01-10 07:43:50,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:43:50,847 INFO L225 Difference]: With dead ends: 4776 [2022-01-10 07:43:50,847 INFO L226 Difference]: Without dead ends: 3547 [2022-01-10 07:43:50,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 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 07:43:50,853 INFO L933 BasicCegarLoop]: 4452 mSDtfsCounter, 4754 mSDsluCounter, 8480 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4773 SdHoareTripleChecker+Valid, 12932 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:43:50,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4773 Valid, 12932 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:43:50,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3547 states. [2022-01-10 07:43:50,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3547 to 3547. [2022-01-10 07:43:50,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3547 states, 3461 states have (on average 1.6879514591158624) internal successors, (5842), 3465 states have internal predecessors, (5842), 55 states have call successors, (55), 29 states have call predecessors, (55), 29 states have return successors, (54), 53 states have call predecessors, (54), 53 states have call successors, (54) [2022-01-10 07:43:50,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3547 states to 3547 states and 5951 transitions. [2022-01-10 07:43:50,952 INFO L78 Accepts]: Start accepts. Automaton has 3547 states and 5951 transitions. Word has length 168 [2022-01-10 07:43:50,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:43:50,952 INFO L470 AbstractCegarLoop]: Abstraction has 3547 states and 5951 transitions. [2022-01-10 07:43:50,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:50,953 INFO L276 IsEmpty]: Start isEmpty. Operand 3547 states and 5951 transitions. [2022-01-10 07:43:50,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:43:50,955 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:43:50,955 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:43:50,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-01-10 07:43:51,165 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 07:43:51,165 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:43:51,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:43:51,167 INFO L85 PathProgramCache]: Analyzing trace with hash -374204643, now seen corresponding path program 1 times [2022-01-10 07:43:51,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:43:51,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603553716] [2022-01-10 07:43:51,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:43:51,168 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:43:51,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:43:51,169 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 07:43:51,171 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 07:43:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:43:51,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:43:51,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:43:51,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:43:51,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:43:51,541 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:43:51,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1603553716] [2022-01-10 07:43:51,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1603553716] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:43:51,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:43:51,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:43:51,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151564499] [2022-01-10 07:43:51,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:43:51,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:43:51,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:43:51,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:43:51,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:43:51,542 INFO L87 Difference]: Start difference. First operand 3547 states and 5951 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:51,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:43:51,994 INFO L93 Difference]: Finished difference Result 5132 states and 8195 transitions. [2022-01-10 07:43:51,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:43:51,995 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-01-10 07:43:51,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:43:52,003 INFO L225 Difference]: With dead ends: 5132 [2022-01-10 07:43:52,003 INFO L226 Difference]: Without dead ends: 3725 [2022-01-10 07:43:52,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 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 07:43:52,008 INFO L933 BasicCegarLoop]: 4449 mSDtfsCounter, 4747 mSDsluCounter, 8476 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4766 SdHoareTripleChecker+Valid, 12925 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:43:52,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4766 Valid, 12925 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:43:52,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3725 states. [2022-01-10 07:43:52,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3725 to 3725. [2022-01-10 07:43:52,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3725 states, 3633 states have (on average 1.668318194329755) internal successors, (6061), 3637 states have internal predecessors, (6061), 57 states have call successors, (57), 33 states have call predecessors, (57), 33 states have return successors, (56), 55 states have call predecessors, (56), 55 states have call successors, (56) [2022-01-10 07:43:52,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3725 states to 3725 states and 6174 transitions. [2022-01-10 07:43:52,115 INFO L78 Accepts]: Start accepts. Automaton has 3725 states and 6174 transitions. Word has length 168 [2022-01-10 07:43:52,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:43:52,115 INFO L470 AbstractCegarLoop]: Abstraction has 3725 states and 6174 transitions. [2022-01-10 07:43:52,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:52,116 INFO L276 IsEmpty]: Start isEmpty. Operand 3725 states and 6174 transitions. [2022-01-10 07:43:52,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:43:52,117 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:43:52,117 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:43:52,130 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 07:43:52,328 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 07:43:52,329 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:43:52,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:43:52,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1803165760, now seen corresponding path program 1 times [2022-01-10 07:43:52,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:43:52,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1312316643] [2022-01-10 07:43:52,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:43:52,330 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:43:52,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:43:52,331 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 07:43:52,333 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 07:43:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:43:52,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:43:52,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:43:52,736 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 07:43:52,736 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:43:52,737 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:43:52,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1312316643] [2022-01-10 07:43:52,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1312316643] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:43:52,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:43:52,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:43:52,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213568810] [2022-01-10 07:43:52,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:43:52,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:43:52,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:43:52,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:43:52,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:43:52,738 INFO L87 Difference]: Start difference. First operand 3725 states and 6174 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:53,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:43:53,276 INFO L93 Difference]: Finished difference Result 5488 states and 8641 transitions. [2022-01-10 07:43:53,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:43:53,277 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-01-10 07:43:53,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:43:53,288 INFO L225 Difference]: With dead ends: 5488 [2022-01-10 07:43:53,288 INFO L226 Difference]: Without dead ends: 3903 [2022-01-10 07:43:53,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 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 07:43:53,294 INFO L933 BasicCegarLoop]: 4446 mSDtfsCounter, 4740 mSDsluCounter, 8472 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4759 SdHoareTripleChecker+Valid, 12918 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:43:53,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4759 Valid, 12918 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:43:53,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3903 states. [2022-01-10 07:43:53,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3903 to 3903. [2022-01-10 07:43:53,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3903 states, 3805 states have (on average 1.6494086727989488) internal successors, (6276), 3809 states have internal predecessors, (6276), 59 states have call successors, (59), 37 states have call predecessors, (59), 37 states have return successors, (58), 57 states have call predecessors, (58), 57 states have call successors, (58) [2022-01-10 07:43:53,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3903 states to 3903 states and 6393 transitions. [2022-01-10 07:43:53,418 INFO L78 Accepts]: Start accepts. Automaton has 3903 states and 6393 transitions. Word has length 168 [2022-01-10 07:43:53,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:43:53,418 INFO L470 AbstractCegarLoop]: Abstraction has 3903 states and 6393 transitions. [2022-01-10 07:43:53,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:53,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3903 states and 6393 transitions. [2022-01-10 07:43:53,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:43:53,420 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:43:53,420 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:53,433 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 07:43:53,631 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 07:43:53,632 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:43:53,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:43:53,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1280433724, now seen corresponding path program 1 times [2022-01-10 07:43:53,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:43:53,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509359913] [2022-01-10 07:43:53,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:43:53,634 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:43:53,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:43:53,635 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 07:43:53,682 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 07:43:53,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:43:53,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:43:53,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:43:54,039 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 07:43:54,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:43:54,039 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:43:54,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509359913] [2022-01-10 07:43:54,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [509359913] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:43:54,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:43:54,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:43:54,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196305041] [2022-01-10 07:43:54,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:43:54,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:43:54,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:43:54,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:43:54,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:43:54,041 INFO L87 Difference]: Start difference. First operand 3903 states and 6393 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:54,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:43:54,674 INFO L93 Difference]: Finished difference Result 5844 states and 9079 transitions. [2022-01-10 07:43:54,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:43:54,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-01-10 07:43:54,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:43:54,685 INFO L225 Difference]: With dead ends: 5844 [2022-01-10 07:43:54,685 INFO L226 Difference]: Without dead ends: 4081 [2022-01-10 07:43:54,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 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 07:43:54,692 INFO L933 BasicCegarLoop]: 4443 mSDtfsCounter, 4733 mSDsluCounter, 8468 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4752 SdHoareTripleChecker+Valid, 12911 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 07:43:54,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4752 Valid, 12911 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 07:43:54,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4081 states. [2022-01-10 07:43:54,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4081 to 4081. [2022-01-10 07:43:54,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4081 states, 3977 states have (on average 1.6311289917022882) internal successors, (6487), 3981 states have internal predecessors, (6487), 61 states have call successors, (61), 41 states have call predecessors, (61), 41 states have return successors, (60), 59 states have call predecessors, (60), 59 states have call successors, (60) [2022-01-10 07:43:54,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4081 states to 4081 states and 6608 transitions. [2022-01-10 07:43:54,830 INFO L78 Accepts]: Start accepts. Automaton has 4081 states and 6608 transitions. Word has length 168 [2022-01-10 07:43:54,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:43:54,830 INFO L470 AbstractCegarLoop]: Abstraction has 4081 states and 6608 transitions. [2022-01-10 07:43:54,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:54,830 INFO L276 IsEmpty]: Start isEmpty. Operand 4081 states and 6608 transitions. [2022-01-10 07:43:54,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:43:54,832 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:43:54,832 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:43:54,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 07:43:55,045 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 07:43:55,045 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:43:55,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:43:55,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1065594591, now seen corresponding path program 1 times [2022-01-10 07:43:55,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:43:55,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2006011563] [2022-01-10 07:43:55,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:43:55,047 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:43:55,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:43:55,048 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 07:43:55,050 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 07:43:55,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:43:55,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:43:55,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:43:55,451 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 07:43:55,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:43:55,452 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:43:55,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2006011563] [2022-01-10 07:43:55,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2006011563] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:43:55,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:43:55,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:43:55,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108051066] [2022-01-10 07:43:55,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:43:55,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:43:55,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:43:55,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:43:55,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:43:55,453 INFO L87 Difference]: Start difference. First operand 4081 states and 6608 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:56,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:43:56,019 INFO L93 Difference]: Finished difference Result 6200 states and 9509 transitions. [2022-01-10 07:43:56,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:43:56,020 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-01-10 07:43:56,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:43:56,030 INFO L225 Difference]: With dead ends: 6200 [2022-01-10 07:43:56,031 INFO L226 Difference]: Without dead ends: 4259 [2022-01-10 07:43:56,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 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 07:43:56,038 INFO L933 BasicCegarLoop]: 4440 mSDtfsCounter, 4726 mSDsluCounter, 8464 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4745 SdHoareTripleChecker+Valid, 12904 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:43:56,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4745 Valid, 12904 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:43:56,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4259 states. [2022-01-10 07:43:56,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4259 to 4259. [2022-01-10 07:43:56,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4259 states, 4149 states have (on average 1.6134008194745721) internal successors, (6694), 4153 states have internal predecessors, (6694), 63 states have call successors, (63), 45 states have call predecessors, (63), 45 states have return successors, (62), 61 states have call predecessors, (62), 61 states have call successors, (62) [2022-01-10 07:43:56,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4259 states to 4259 states and 6819 transitions. [2022-01-10 07:43:56,190 INFO L78 Accepts]: Start accepts. Automaton has 4259 states and 6819 transitions. Word has length 168 [2022-01-10 07:43:56,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:43:56,190 INFO L470 AbstractCegarLoop]: Abstraction has 4259 states and 6819 transitions. [2022-01-10 07:43:56,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:56,190 INFO L276 IsEmpty]: Start isEmpty. Operand 4259 states and 6819 transitions. [2022-01-10 07:43:56,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:43:56,192 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:43:56,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:43:56,205 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 07:43:56,403 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 07:43:56,403 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:43:56,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:43:56,403 INFO L85 PathProgramCache]: Analyzing trace with hash 501922779, now seen corresponding path program 1 times [2022-01-10 07:43:56,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:43:56,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068085644] [2022-01-10 07:43:56,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:43:56,404 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:43:56,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:43:56,405 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 07:43:56,406 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 07:43:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:43:56,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:43:56,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:43:56,744 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 07:43:56,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:43:56,745 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:43:56,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1068085644] [2022-01-10 07:43:56,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1068085644] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:43:56,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:43:56,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:43:56,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723968906] [2022-01-10 07:43:56,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:43:56,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:43:56,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:43:56,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:43:56,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:43:56,746 INFO L87 Difference]: Start difference. First operand 4259 states and 6819 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:57,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:43:57,353 INFO L93 Difference]: Finished difference Result 6556 states and 9931 transitions. [2022-01-10 07:43:57,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:43:57,354 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-01-10 07:43:57,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:43:57,360 INFO L225 Difference]: With dead ends: 6556 [2022-01-10 07:43:57,361 INFO L226 Difference]: Without dead ends: 4437 [2022-01-10 07:43:57,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 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 07:43:57,366 INFO L933 BasicCegarLoop]: 4437 mSDtfsCounter, 4719 mSDsluCounter, 8460 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4738 SdHoareTripleChecker+Valid, 12897 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:43:57,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4738 Valid, 12897 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:43:57,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4437 states. [2022-01-10 07:43:57,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4437 to 4437. [2022-01-10 07:43:57,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4437 states, 4321 states have (on average 1.596158296690581) internal successors, (6897), 4325 states have internal predecessors, (6897), 65 states have call successors, (65), 49 states have call predecessors, (65), 49 states have return successors, (64), 63 states have call predecessors, (64), 63 states have call successors, (64) [2022-01-10 07:43:57,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4437 states to 4437 states and 7026 transitions. [2022-01-10 07:43:57,577 INFO L78 Accepts]: Start accepts. Automaton has 4437 states and 7026 transitions. Word has length 168 [2022-01-10 07:43:57,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:43:57,578 INFO L470 AbstractCegarLoop]: Abstraction has 4437 states and 7026 transitions. [2022-01-10 07:43:57,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:57,579 INFO L276 IsEmpty]: Start isEmpty. Operand 4437 states and 7026 transitions. [2022-01-10 07:43:57,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:43:57,581 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:43:57,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:43:57,598 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 07:43:57,792 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 07:43:57,793 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:43:57,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:43:57,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1305193474, now seen corresponding path program 1 times [2022-01-10 07:43:57,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:43:57,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [544364866] [2022-01-10 07:43:57,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:43:57,794 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:43:57,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:43:57,796 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 07:43:57,798 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 07:43:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:43:57,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:43:57,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:43:58,178 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 07:43:58,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:43:58,179 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:43:58,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [544364866] [2022-01-10 07:43:58,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [544364866] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:43:58,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:43:58,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:43:58,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091704382] [2022-01-10 07:43:58,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:43:58,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:43:58,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:43:58,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:43:58,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:43:58,180 INFO L87 Difference]: Start difference. First operand 4437 states and 7026 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:58,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:43:58,783 INFO L93 Difference]: Finished difference Result 6912 states and 10345 transitions. [2022-01-10 07:43:58,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:43:58,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-01-10 07:43:58,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:43:58,792 INFO L225 Difference]: With dead ends: 6912 [2022-01-10 07:43:58,792 INFO L226 Difference]: Without dead ends: 4615 [2022-01-10 07:43:58,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 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 07:43:58,798 INFO L933 BasicCegarLoop]: 4434 mSDtfsCounter, 4711 mSDsluCounter, 8456 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4730 SdHoareTripleChecker+Valid, 12890 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:43:58,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4730 Valid, 12890 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:43:58,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4615 states. [2022-01-10 07:43:58,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4615 to 4615. [2022-01-10 07:43:58,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4615 states, 4493 states have (on average 1.579345648787002) internal successors, (7096), 4497 states have internal predecessors, (7096), 67 states have call successors, (67), 53 states have call predecessors, (67), 53 states have return successors, (66), 65 states have call predecessors, (66), 65 states have call successors, (66) [2022-01-10 07:43:58,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4615 states to 4615 states and 7229 transitions. [2022-01-10 07:43:58,977 INFO L78 Accepts]: Start accepts. Automaton has 4615 states and 7229 transitions. Word has length 168 [2022-01-10 07:43:58,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:43:58,978 INFO L470 AbstractCegarLoop]: Abstraction has 4615 states and 7229 transitions. [2022-01-10 07:43:58,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:58,978 INFO L276 IsEmpty]: Start isEmpty. Operand 4615 states and 7229 transitions. [2022-01-10 07:43:58,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:43:58,979 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:43:58,979 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:58,991 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 07:43:59,190 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 07:43:59,190 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:43:59,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:43:59,191 INFO L85 PathProgramCache]: Analyzing trace with hash -722226271, now seen corresponding path program 1 times [2022-01-10 07:43:59,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:43:59,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [750651454] [2022-01-10 07:43:59,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:43:59,191 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:43:59,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:43:59,193 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 07:43:59,193 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 07:43:59,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:43:59,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:43:59,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:43:59,553 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 07:43:59,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:43:59,554 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:43:59,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [750651454] [2022-01-10 07:43:59,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [750651454] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:43:59,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:43:59,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:43:59,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538700918] [2022-01-10 07:43:59,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:43:59,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:43:59,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:43:59,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:43:59,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:43:59,555 INFO L87 Difference]: Start difference. First operand 4615 states and 7229 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:43:59,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:43:59,751 INFO L93 Difference]: Finished difference Result 7411 states and 10936 transitions. [2022-01-10 07:43:59,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:43:59,751 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-01-10 07:43:59,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:43:59,759 INFO L225 Difference]: With dead ends: 7411 [2022-01-10 07:43:59,759 INFO L226 Difference]: Without dead ends: 4937 [2022-01-10 07:43:59,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 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 07:43:59,766 INFO L933 BasicCegarLoop]: 4460 mSDtfsCounter, 441 mSDsluCounter, 13554 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 18014 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 07:43:59,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [441 Valid, 18014 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:43:59,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4937 states. [2022-01-10 07:44:00,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4937 to 4621. [2022-01-10 07:44:00,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4621 states, 4499 states have (on average 1.574127583907535) internal successors, (7082), 4503 states have internal predecessors, (7082), 67 states have call successors, (67), 53 states have call predecessors, (67), 53 states have return successors, (66), 65 states have call predecessors, (66), 65 states have call successors, (66) [2022-01-10 07:44:00,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4621 states to 4621 states and 7215 transitions. [2022-01-10 07:44:00,027 INFO L78 Accepts]: Start accepts. Automaton has 4621 states and 7215 transitions. Word has length 168 [2022-01-10 07:44:00,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:00,027 INFO L470 AbstractCegarLoop]: Abstraction has 4621 states and 7215 transitions. [2022-01-10 07:44:00,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:00,028 INFO L276 IsEmpty]: Start isEmpty. Operand 4621 states and 7215 transitions. [2022-01-10 07:44:00,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:44:00,029 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:00,029 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:44:00,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-01-10 07:44:00,240 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 07:44:00,240 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:00,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:00,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1279659999, now seen corresponding path program 1 times [2022-01-10 07:44:00,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:00,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723170119] [2022-01-10 07:44:00,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:00,241 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:00,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:00,242 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 07:44:00,243 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 07:44:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:00,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:00,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:00,561 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 07:44:00,561 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:00,561 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:00,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723170119] [2022-01-10 07:44:00,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723170119] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:00,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:00,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:44:00,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117890877] [2022-01-10 07:44:00,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:00,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:00,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:00,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:00,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:00,563 INFO L87 Difference]: Start difference. First operand 4621 states and 7215 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:00,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:00,752 INFO L93 Difference]: Finished difference Result 7395 states and 10872 transitions. [2022-01-10 07:44:00,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:44:00,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-01-10 07:44:00,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:00,764 INFO L225 Difference]: With dead ends: 7395 [2022-01-10 07:44:00,764 INFO L226 Difference]: Without dead ends: 4915 [2022-01-10 07:44:00,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 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 07:44:00,772 INFO L933 BasicCegarLoop]: 4460 mSDtfsCounter, 402 mSDsluCounter, 13539 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 17999 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 07:44:00,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 17999 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:44:00,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4915 states. [2022-01-10 07:44:00,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4915 to 4627. [2022-01-10 07:44:00,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4505 states have (on average 1.5689234184239733) internal successors, (7068), 4509 states have internal predecessors, (7068), 67 states have call successors, (67), 53 states have call predecessors, (67), 53 states have return successors, (66), 65 states have call predecessors, (66), 65 states have call successors, (66) [2022-01-10 07:44:00,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7201 transitions. [2022-01-10 07:44:00,959 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7201 transitions. Word has length 168 [2022-01-10 07:44:00,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:00,959 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7201 transitions. [2022-01-10 07:44:00,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:00,960 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7201 transitions. [2022-01-10 07:44:00,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:44:00,961 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:00,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:44:00,972 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 07:44:01,171 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 07:44:01,172 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:01,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:01,172 INFO L85 PathProgramCache]: Analyzing trace with hash -693505379, now seen corresponding path program 1 times [2022-01-10 07:44:01,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:01,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [356759275] [2022-01-10 07:44:01,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:01,173 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:01,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:01,174 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 07:44:01,175 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 07:44:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:01,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:44:01,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:01,529 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 07:44:01,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:01,530 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:01,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [356759275] [2022-01-10 07:44:01,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [356759275] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:01,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:01,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:44:01,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389790142] [2022-01-10 07:44:01,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:01,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:44:01,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:01,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:44:01,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:44:01,531 INFO L87 Difference]: Start difference. First operand 4627 states and 7201 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:01,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:01,877 INFO L93 Difference]: Finished difference Result 9390 states and 13383 transitions. [2022-01-10 07:44:01,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:44:01,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-01-10 07:44:01,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:01,889 INFO L225 Difference]: With dead ends: 9390 [2022-01-10 07:44:01,890 INFO L226 Difference]: Without dead ends: 6904 [2022-01-10 07:44:01,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:44:01,897 INFO L933 BasicCegarLoop]: 4533 mSDtfsCounter, 4388 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4388 SdHoareTripleChecker+Valid, 4995 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 07:44:01,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4388 Valid, 4995 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:44:01,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6904 states. [2022-01-10 07:44:02,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6904 to 6896. [2022-01-10 07:44:02,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6896 states, 6668 states have (on average 1.4773545290941812) internal successors, (9851), 6673 states have internal predecessors, (9851), 124 states have call successors, (124), 101 states have call predecessors, (124), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2022-01-10 07:44:02,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6896 states to 6896 states and 10099 transitions. [2022-01-10 07:44:02,308 INFO L78 Accepts]: Start accepts. Automaton has 6896 states and 10099 transitions. Word has length 168 [2022-01-10 07:44:02,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:02,308 INFO L470 AbstractCegarLoop]: Abstraction has 6896 states and 10099 transitions. [2022-01-10 07:44:02,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:02,309 INFO L276 IsEmpty]: Start isEmpty. Operand 6896 states and 10099 transitions. [2022-01-10 07:44:02,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:44:02,310 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:02,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:44:02,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-01-10 07:44:02,520 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 07:44:02,521 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:02,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:02,521 INFO L85 PathProgramCache]: Analyzing trace with hash -372182916, now seen corresponding path program 1 times [2022-01-10 07:44:02,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:02,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1205291832] [2022-01-10 07:44:02,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:02,522 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:02,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:02,523 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 07:44:02,524 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 07:44:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:02,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:02,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:02,859 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 07:44:02,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:02,860 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:02,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1205291832] [2022-01-10 07:44:02,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1205291832] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:02,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:02,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:44:02,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062155272] [2022-01-10 07:44:02,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:02,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:02,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:02,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:02,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:02,862 INFO L87 Difference]: Start difference. First operand 6896 states and 10099 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:03,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:03,300 INFO L93 Difference]: Finished difference Result 14577 states and 20123 transitions. [2022-01-10 07:44:03,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:44:03,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-01-10 07:44:03,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:03,324 INFO L225 Difference]: With dead ends: 14577 [2022-01-10 07:44:03,325 INFO L226 Difference]: Without dead ends: 9822 [2022-01-10 07:44:03,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 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 07:44:03,342 INFO L933 BasicCegarLoop]: 4466 mSDtfsCounter, 369 mSDsluCounter, 13571 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 18037 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 07:44:03,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 18037 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:44:03,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9822 states. [2022-01-10 07:44:03,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9822 to 6962. [2022-01-10 07:44:03,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6962 states, 6734 states have (on average 1.4697059697059698) internal successors, (9897), 6739 states have internal predecessors, (9897), 124 states have call successors, (124), 101 states have call predecessors, (124), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2022-01-10 07:44:03,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6962 states to 6962 states and 10145 transitions. [2022-01-10 07:44:03,746 INFO L78 Accepts]: Start accepts. Automaton has 6962 states and 10145 transitions. Word has length 168 [2022-01-10 07:44:03,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:03,747 INFO L470 AbstractCegarLoop]: Abstraction has 6962 states and 10145 transitions. [2022-01-10 07:44:03,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:03,747 INFO L276 IsEmpty]: Start isEmpty. Operand 6962 states and 10145 transitions. [2022-01-10 07:44:03,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:44:03,748 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:03,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:44:03,761 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 07:44:03,958 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 07:44:03,959 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:03,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:03,959 INFO L85 PathProgramCache]: Analyzing trace with hash 2056075706, now seen corresponding path program 1 times [2022-01-10 07:44:03,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:03,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [264343990] [2022-01-10 07:44:03,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:03,960 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:03,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:03,961 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 07:44:03,963 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 07:44:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:04,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:04,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:04,314 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 07:44:04,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:04,315 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:04,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [264343990] [2022-01-10 07:44:04,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [264343990] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:04,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:04,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:44:04,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874969426] [2022-01-10 07:44:04,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:04,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:04,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:04,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:04,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:04,316 INFO L87 Difference]: Start difference. First operand 6962 states and 10145 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:04,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:04,645 INFO L93 Difference]: Finished difference Result 12021 states and 16701 transitions. [2022-01-10 07:44:04,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:44:04,646 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-01-10 07:44:04,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:04,657 INFO L225 Difference]: With dead ends: 12021 [2022-01-10 07:44:04,657 INFO L226 Difference]: Without dead ends: 7200 [2022-01-10 07:44:04,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 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 07:44:04,669 INFO L933 BasicCegarLoop]: 4460 mSDtfsCounter, 323 mSDsluCounter, 13504 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 17964 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 07:44:04,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 17964 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:44:04,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7200 states. [2022-01-10 07:44:04,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7200 to 6968. [2022-01-10 07:44:04,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6968 states, 6740 states have (on average 1.463353115727003) internal successors, (9863), 6745 states have internal predecessors, (9863), 124 states have call successors, (124), 101 states have call predecessors, (124), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2022-01-10 07:44:04,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6968 states to 6968 states and 10111 transitions. [2022-01-10 07:44:04,986 INFO L78 Accepts]: Start accepts. Automaton has 6968 states and 10111 transitions. Word has length 168 [2022-01-10 07:44:04,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:04,987 INFO L470 AbstractCegarLoop]: Abstraction has 6968 states and 10111 transitions. [2022-01-10 07:44:04,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:04,987 INFO L276 IsEmpty]: Start isEmpty. Operand 6968 states and 10111 transitions. [2022-01-10 07:44:04,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:44:04,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:04,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:44:04,999 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 07:44:05,198 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 07:44:05,199 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:05,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:05,199 INFO L85 PathProgramCache]: Analyzing trace with hash 999344504, now seen corresponding path program 1 times [2022-01-10 07:44:05,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:05,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1723576847] [2022-01-10 07:44:05,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:05,200 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:05,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:05,201 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 07:44:05,201 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 07:44:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:05,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:05,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:05,528 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 07:44:05,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:05,528 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:05,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1723576847] [2022-01-10 07:44:05,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1723576847] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:05,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:05,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:44:05,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165097251] [2022-01-10 07:44:05,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:05,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:05,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:05,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:05,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:05,530 INFO L87 Difference]: Start difference. First operand 6968 states and 10111 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:05,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:05,910 INFO L93 Difference]: Finished difference Result 12159 states and 16797 transitions. [2022-01-10 07:44:05,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:44:05,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-01-10 07:44:05,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:05,923 INFO L225 Difference]: With dead ends: 12159 [2022-01-10 07:44:05,924 INFO L226 Difference]: Without dead ends: 7332 [2022-01-10 07:44:05,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 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 07:44:05,932 INFO L933 BasicCegarLoop]: 4460 mSDtfsCounter, 245 mSDsluCounter, 13474 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 17934 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 07:44:05,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 17934 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:44:05,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7332 states. [2022-01-10 07:44:06,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7332 to 6980. [2022-01-10 07:44:06,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6980 states, 6752 states have (on average 1.4569016587677726) internal successors, (9837), 6757 states have internal predecessors, (9837), 124 states have call successors, (124), 101 states have call predecessors, (124), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2022-01-10 07:44:06,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6980 states to 6980 states and 10085 transitions. [2022-01-10 07:44:06,251 INFO L78 Accepts]: Start accepts. Automaton has 6980 states and 10085 transitions. Word has length 168 [2022-01-10 07:44:06,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:06,251 INFO L470 AbstractCegarLoop]: Abstraction has 6980 states and 10085 transitions. [2022-01-10 07:44:06,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:06,251 INFO L276 IsEmpty]: Start isEmpty. Operand 6980 states and 10085 transitions. [2022-01-10 07:44:06,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:44:06,253 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:06,253 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:06,267 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 07:44:06,463 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 07:44:06,463 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:06,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:06,464 INFO L85 PathProgramCache]: Analyzing trace with hash -879786442, now seen corresponding path program 1 times [2022-01-10 07:44:06,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:06,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [387936986] [2022-01-10 07:44:06,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:06,464 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:06,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:06,465 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 07:44:06,466 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 07:44:06,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:06,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:06,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:06,777 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 07:44:06,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:06,777 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:06,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [387936986] [2022-01-10 07:44:06,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [387936986] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:06,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:06,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:44:06,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436346975] [2022-01-10 07:44:06,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:06,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:06,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:06,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:06,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:06,779 INFO L87 Difference]: Start difference. First operand 6980 states and 10085 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:07,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:07,180 INFO L93 Difference]: Finished difference Result 12127 states and 16673 transitions. [2022-01-10 07:44:07,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:44:07,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-01-10 07:44:07,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:07,191 INFO L225 Difference]: With dead ends: 12127 [2022-01-10 07:44:07,191 INFO L226 Difference]: Without dead ends: 7288 [2022-01-10 07:44:07,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 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 07:44:07,197 INFO L933 BasicCegarLoop]: 4460 mSDtfsCounter, 206 mSDsluCounter, 13459 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 17919 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 07:44:07,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 17919 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:44:07,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7288 states. [2022-01-10 07:44:07,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7288 to 6992. [2022-01-10 07:44:07,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6992 states, 6764 states have (on average 1.4504730928444707) internal successors, (9811), 6769 states have internal predecessors, (9811), 124 states have call successors, (124), 101 states have call predecessors, (124), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2022-01-10 07:44:07,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6992 states to 6992 states and 10059 transitions. [2022-01-10 07:44:07,516 INFO L78 Accepts]: Start accepts. Automaton has 6992 states and 10059 transitions. Word has length 168 [2022-01-10 07:44:07,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:07,516 INFO L470 AbstractCegarLoop]: Abstraction has 6992 states and 10059 transitions. [2022-01-10 07:44:07,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:07,517 INFO L276 IsEmpty]: Start isEmpty. Operand 6992 states and 10059 transitions. [2022-01-10 07:44:07,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:44:07,518 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:07,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:07,525 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 07:44:07,718 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 07:44:07,718 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:07,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:07,719 INFO L85 PathProgramCache]: Analyzing trace with hash -40752780, now seen corresponding path program 1 times [2022-01-10 07:44:07,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:07,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [603043460] [2022-01-10 07:44:07,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:07,719 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:07,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:07,720 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 07:44:07,721 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 07:44:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:07,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:07,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:08,043 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 07:44:08,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:08,044 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:08,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [603043460] [2022-01-10 07:44:08,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [603043460] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:08,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:08,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:44:08,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884365343] [2022-01-10 07:44:08,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:08,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:08,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:08,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:08,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:08,045 INFO L87 Difference]: Start difference. First operand 6992 states and 10059 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:08,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:08,461 INFO L93 Difference]: Finished difference Result 12095 states and 16549 transitions. [2022-01-10 07:44:08,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:44:08,462 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-01-10 07:44:08,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:08,479 INFO L225 Difference]: With dead ends: 12095 [2022-01-10 07:44:08,479 INFO L226 Difference]: Without dead ends: 7244 [2022-01-10 07:44:08,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 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 07:44:08,485 INFO L933 BasicCegarLoop]: 4460 mSDtfsCounter, 167 mSDsluCounter, 13444 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 17904 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 07:44:08,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 17904 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:44:08,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7244 states. [2022-01-10 07:44:08,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7244 to 7004. [2022-01-10 07:44:08,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7004 states, 6776 states have (on average 1.4440672963400236) internal successors, (9785), 6781 states have internal predecessors, (9785), 124 states have call successors, (124), 101 states have call predecessors, (124), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2022-01-10 07:44:08,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7004 states to 7004 states and 10033 transitions. [2022-01-10 07:44:08,805 INFO L78 Accepts]: Start accepts. Automaton has 7004 states and 10033 transitions. Word has length 168 [2022-01-10 07:44:08,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:08,805 INFO L470 AbstractCegarLoop]: Abstraction has 7004 states and 10033 transitions. [2022-01-10 07:44:08,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:08,805 INFO L276 IsEmpty]: Start isEmpty. Operand 7004 states and 10033 transitions. [2022-01-10 07:44:08,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:44:08,806 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:08,806 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:44:08,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-01-10 07:44:09,007 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 07:44:09,007 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:09,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:09,007 INFO L85 PathProgramCache]: Analyzing trace with hash 36148018, now seen corresponding path program 1 times [2022-01-10 07:44:09,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:09,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [781533521] [2022-01-10 07:44:09,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:09,008 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:09,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:09,009 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 07:44:09,011 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 07:44:09,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:09,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:09,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:09,349 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 07:44:09,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:09,349 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:09,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [781533521] [2022-01-10 07:44:09,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [781533521] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:09,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:09,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:44:09,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747352983] [2022-01-10 07:44:09,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:09,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:09,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:09,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:09,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:09,351 INFO L87 Difference]: Start difference. First operand 7004 states and 10033 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)