/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/product-lines/minepump_spec5_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:36:12,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:36:12,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:36:12,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:36:12,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:36:12,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:36:12,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:36:12,488 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:36:12,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:36:12,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:36:12,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:36:12,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:36:12,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:36:12,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:36:12,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:36:12,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:36:12,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:36:12,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:36:12,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:36:12,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:36:12,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:36:12,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:36:12,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:36:12,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:36:12,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:36:12,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:36:12,511 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:36:12,512 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:36:12,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:36:12,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:36:12,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:36:12,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:36:12,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:36:12,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:36:12,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:36:12,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:36:12,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:36:12,517 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:36:12,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:36:12,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:36:12,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:36:12,520 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 06:36:12,542 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:36:12,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:36:12,542 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:36:12,542 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:36:12,543 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:36:12,543 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:36:12,544 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:36:12,544 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:36:12,544 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:36:12,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:36:12,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:36:12,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:36:12,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:36:12,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:36:12,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:36:12,545 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:36:12,545 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:36:12,545 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:36:12,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:36:12,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:36:12,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:36:12,546 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:36:12,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:36:12,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:36:12,546 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:36:12,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:36:12,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:36:12,546 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:36:12,547 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:36:12,547 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:36:12,547 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:36:12,547 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:36:12,547 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:36:12,547 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:36:12,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:36:12,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:36:12,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:36:12,786 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:36:12,787 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:36:12,788 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_productSimulator.cil.c [2022-01-10 06:36:12,856 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/381f58686/6161ee271a884fcd9f0535c391fa7300/FLAG5c19361eb [2022-01-10 06:36:13,333 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:36:13,333 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_productSimulator.cil.c [2022-01-10 06:36:13,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/381f58686/6161ee271a884fcd9f0535c391fa7300/FLAG5c19361eb [2022-01-10 06:36:13,646 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/381f58686/6161ee271a884fcd9f0535c391fa7300 [2022-01-10 06:36:13,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:36:13,649 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:36:13,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:36:13,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:36:13,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:36:13,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:36:13" (1/1) ... [2022-01-10 06:36:13,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78e49c8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:36:13, skipping insertion in model container [2022-01-10 06:36:13,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:36:13" (1/1) ... [2022-01-10 06:36:13,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:36:13,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:36:13,890 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_productSimulator.cil.c[5724,5737] [2022-01-10 06:36:14,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:36:14,019 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 06:36:14,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:36:14,044 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_productSimulator.cil.c[5724,5737] [2022-01-10 06:36:14,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:36:14,115 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:36:14,152 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_productSimulator.cil.c[5724,5737] [2022-01-10 06:36:14,203 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:36:14,228 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:36:14,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:36:14 WrapperNode [2022-01-10 06:36:14,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:36:14,229 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:36:14,230 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:36:14,230 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:36:14,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:36:14" (1/1) ... [2022-01-10 06:36:14,250 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:36:14" (1/1) ... [2022-01-10 06:36:14,278 INFO L137 Inliner]: procedures = 67, calls = 180, calls flagged for inlining = 30, calls inlined = 27, statements flattened = 335 [2022-01-10 06:36:14,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:36:14,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:36:14,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:36:14,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:36:14,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:36:14" (1/1) ... [2022-01-10 06:36:14,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:36:14" (1/1) ... [2022-01-10 06:36:14,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:36:14" (1/1) ... [2022-01-10 06:36:14,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:36:14" (1/1) ... [2022-01-10 06:36:14,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:36:14" (1/1) ... [2022-01-10 06:36:14,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:36:14" (1/1) ... [2022-01-10 06:36:14,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:36:14" (1/1) ... [2022-01-10 06:36:14,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:36:14,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:36:14,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:36:14,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:36:14,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:36:14" (1/1) ... [2022-01-10 06:36:14,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:36:14,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:36:14,357 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 06:36:14,363 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 06:36:14,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:36:14,391 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2022-01-10 06:36:14,391 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2022-01-10 06:36:14,391 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-01-10 06:36:14,391 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-01-10 06:36:14,391 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-01-10 06:36:14,391 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-01-10 06:36:14,391 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2022-01-10 06:36:14,392 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2022-01-10 06:36:14,392 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-01-10 06:36:14,392 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-01-10 06:36:14,392 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2022-01-10 06:36:14,392 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2022-01-10 06:36:14,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:36:14,392 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2022-01-10 06:36:14,393 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2022-01-10 06:36:14,393 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2022-01-10 06:36:14,393 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2022-01-10 06:36:14,393 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2022-01-10 06:36:14,393 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2022-01-10 06:36:14,393 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2022-01-10 06:36:14,393 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2022-01-10 06:36:14,393 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2022-01-10 06:36:14,393 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2022-01-10 06:36:14,394 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-01-10 06:36:14,394 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-01-10 06:36:14,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:36:14,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:36:14,467 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:36:14,468 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:36:14,805 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:36:14,813 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:36:14,813 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 06:36:14,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:36:14 BoogieIcfgContainer [2022-01-10 06:36:14,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:36:14,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:36:14,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:36:14,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:36:14,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:36:13" (1/3) ... [2022-01-10 06:36:14,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8728337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:36:14, skipping insertion in model container [2022-01-10 06:36:14,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:36:14" (2/3) ... [2022-01-10 06:36:14,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8728337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:36:14, skipping insertion in model container [2022-01-10 06:36:14,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:36:14" (3/3) ... [2022-01-10 06:36:14,822 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec5_productSimulator.cil.c [2022-01-10 06:36:14,827 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:36:14,827 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:36:14,867 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:36:14,872 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 06:36:14,873 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:36:14,894 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 104 states have (on average 1.3557692307692308) internal successors, (141), 120 states have internal predecessors, (141), 30 states have call successors, (30), 12 states have call predecessors, (30), 12 states have return successors, (30), 25 states have call predecessors, (30), 30 states have call successors, (30) [2022-01-10 06:36:14,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 06:36:14,908 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:36:14,909 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:36:14,909 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:36:14,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:36:14,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1460925416, now seen corresponding path program 1 times [2022-01-10 06:36:14,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:36:14,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1966034486] [2022-01-10 06:36:14,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:36:14,926 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:36:14,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:36:14,927 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 06:36:14,929 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 06:36:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:36:15,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 06:36:15,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:36:15,281 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-01-10 06:36:15,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:36:15,282 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:36:15,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1966034486] [2022-01-10 06:36:15,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1966034486] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:36:15,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:36:15,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:36:15,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209268316] [2022-01-10 06:36:15,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:36:15,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 06:36:15,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:36:15,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 06:36:15,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:36:15,321 INFO L87 Difference]: Start difference. First operand has 148 states, 104 states have (on average 1.3557692307692308) internal successors, (141), 120 states have internal predecessors, (141), 30 states have call successors, (30), 12 states have call predecessors, (30), 12 states have return successors, (30), 25 states have call predecessors, (30), 30 states have call successors, (30) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:36:15,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:36:15,366 INFO L93 Difference]: Finished difference Result 272 states and 376 transitions. [2022-01-10 06:36:15,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 06:36:15,371 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2022-01-10 06:36:15,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:36:15,380 INFO L225 Difference]: With dead ends: 272 [2022-01-10 06:36:15,380 INFO L226 Difference]: Without dead ends: 139 [2022-01-10 06:36:15,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:36:15,387 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:36:15,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:36:15,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-01-10 06:36:15,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2022-01-10 06:36:15,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 97 states have (on average 1.309278350515464) internal successors, (127), 112 states have internal predecessors, (127), 30 states have call successors, (30), 12 states have call predecessors, (30), 11 states have return successors, (29), 24 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-10 06:36:15,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 186 transitions. [2022-01-10 06:36:15,430 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 186 transitions. Word has length 62 [2022-01-10 06:36:15,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:36:15,431 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 186 transitions. [2022-01-10 06:36:15,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:36:15,432 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 186 transitions. [2022-01-10 06:36:15,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 06:36:15,434 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:36:15,434 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:36:15,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 06:36:15,635 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 06:36:15,635 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:36:15,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:36:15,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1003270502, now seen corresponding path program 1 times [2022-01-10 06:36:15,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:36:15,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443913788] [2022-01-10 06:36:15,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:36:15,638 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:36:15,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:36:15,639 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 06:36:15,677 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 06:36:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:36:15,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:36:15,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:36:15,876 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-01-10 06:36:15,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:36:15,878 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:36:15,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443913788] [2022-01-10 06:36:15,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443913788] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:36:15,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:36:15,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:36:15,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919834288] [2022-01-10 06:36:15,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:36:15,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:36:15,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:36:15,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:36:15,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:36:15,892 INFO L87 Difference]: Start difference. First operand 139 states and 186 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:36:15,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:36:15,922 INFO L93 Difference]: Finished difference Result 221 states and 296 transitions. [2022-01-10 06:36:15,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:36:15,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2022-01-10 06:36:15,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:36:15,939 INFO L225 Difference]: With dead ends: 221 [2022-01-10 06:36:15,940 INFO L226 Difference]: Without dead ends: 130 [2022-01-10 06:36:15,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 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 06:36:15,960 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 21 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:36:15,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 320 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:36:15,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-01-10 06:36:15,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2022-01-10 06:36:15,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 91 states have (on average 1.3186813186813187) internal successors, (120), 106 states have internal predecessors, (120), 27 states have call successors, (27), 11 states have call predecessors, (27), 11 states have return successors, (27), 22 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-10 06:36:15,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 174 transitions. [2022-01-10 06:36:15,977 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 174 transitions. Word has length 63 [2022-01-10 06:36:15,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:36:15,978 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 174 transitions. [2022-01-10 06:36:15,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:36:15,978 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 174 transitions. [2022-01-10 06:36:15,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 06:36:15,983 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:36:15,983 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:36:15,991 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 06:36:16,189 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 06:36:16,189 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:36:16,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:36:16,190 INFO L85 PathProgramCache]: Analyzing trace with hash 742899427, now seen corresponding path program 1 times [2022-01-10 06:36:16,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:36:16,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1913456343] [2022-01-10 06:36:16,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:36:16,191 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:36:16,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:36:16,192 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 06:36:16,193 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 06:36:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:36:16,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:36:16,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:36:16,479 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-01-10 06:36:16,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:36:16,480 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:36:16,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1913456343] [2022-01-10 06:36:16,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1913456343] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:36:16,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:36:16,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:36:16,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860323127] [2022-01-10 06:36:16,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:36:16,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:36:16,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:36:16,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:36:16,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:36:16,482 INFO L87 Difference]: Start difference. First operand 130 states and 174 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:36:16,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:36:16,506 INFO L93 Difference]: Finished difference Result 342 states and 465 transitions. [2022-01-10 06:36:16,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:36:16,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2022-01-10 06:36:16,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:36:16,509 INFO L225 Difference]: With dead ends: 342 [2022-01-10 06:36:16,509 INFO L226 Difference]: Without dead ends: 235 [2022-01-10 06:36:16,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 66 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 06:36:16,511 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 124 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:36:16,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 349 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:36:16,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-01-10 06:36:16,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 232. [2022-01-10 06:36:16,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 162 states have (on average 1.3518518518518519) internal successors, (219), 191 states have internal predecessors, (219), 48 states have call successors, (48), 21 states have call predecessors, (48), 21 states have return successors, (48), 37 states have call predecessors, (48), 48 states have call successors, (48) [2022-01-10 06:36:16,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 315 transitions. [2022-01-10 06:36:16,535 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 315 transitions. Word has length 68 [2022-01-10 06:36:16,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:36:16,535 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 315 transitions. [2022-01-10 06:36:16,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:36:16,535 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 315 transitions. [2022-01-10 06:36:16,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 06:36:16,537 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:36:16,538 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:36:16,550 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 06:36:16,747 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 06:36:16,748 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:36:16,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:36:16,748 INFO L85 PathProgramCache]: Analyzing trace with hash 999872991, now seen corresponding path program 1 times [2022-01-10 06:36:16,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:36:16,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570185912] [2022-01-10 06:36:16,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:36:16,749 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:36:16,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:36:16,750 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 06:36:16,752 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 06:36:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:36:16,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:36:16,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:36:17,051 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-10 06:36:17,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:36:17,052 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:36:17,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570185912] [2022-01-10 06:36:17,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1570185912] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:36:17,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:36:17,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:36:17,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871736807] [2022-01-10 06:36:17,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:36:17,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:36:17,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:36:17,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:36:17,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:36:17,055 INFO L87 Difference]: Start difference. First operand 232 states and 315 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-01-10 06:36:17,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:36:17,218 INFO L93 Difference]: Finished difference Result 582 states and 820 transitions. [2022-01-10 06:36:17,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:36:17,219 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 72 [2022-01-10 06:36:17,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:36:17,222 INFO L225 Difference]: With dead ends: 582 [2022-01-10 06:36:17,222 INFO L226 Difference]: Without dead ends: 373 [2022-01-10 06:36:17,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:36:17,224 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 86 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:36:17,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 758 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:36:17,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-01-10 06:36:17,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 360. [2022-01-10 06:36:17,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 258 states have (on average 1.317829457364341) internal successors, (340), 291 states have internal predecessors, (340), 64 states have call successors, (64), 37 states have call predecessors, (64), 37 states have return successors, (84), 59 states have call predecessors, (84), 64 states have call successors, (84) [2022-01-10 06:36:17,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 488 transitions. [2022-01-10 06:36:17,258 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 488 transitions. Word has length 72 [2022-01-10 06:36:17,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:36:17,258 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 488 transitions. [2022-01-10 06:36:17,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-01-10 06:36:17,259 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 488 transitions. [2022-01-10 06:36:17,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 06:36:17,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:36:17,261 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:36:17,273 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 06:36:17,467 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 06:36:17,467 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:36:17,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:36:17,468 INFO L85 PathProgramCache]: Analyzing trace with hash 997919659, now seen corresponding path program 1 times [2022-01-10 06:36:17,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:36:17,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070409644] [2022-01-10 06:36:17,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:36:17,469 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:36:17,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:36:17,470 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 06:36:17,472 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 06:36:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:36:17,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:36:17,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:36:17,761 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-01-10 06:36:17,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:36:17,762 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:36:17,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070409644] [2022-01-10 06:36:17,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1070409644] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:36:17,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:36:17,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:36:17,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911005061] [2022-01-10 06:36:17,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:36:17,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:36:17,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:36:17,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:36:17,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:36:17,764 INFO L87 Difference]: Start difference. First operand 360 states and 488 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:36:17,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:36:17,802 INFO L93 Difference]: Finished difference Result 966 states and 1335 transitions. [2022-01-10 06:36:17,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:36:17,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 92 [2022-01-10 06:36:17,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:36:17,806 INFO L225 Difference]: With dead ends: 966 [2022-01-10 06:36:17,807 INFO L226 Difference]: Without dead ends: 629 [2022-01-10 06:36:17,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 90 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 06:36:17,809 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 88 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:36:17,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 325 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:36:17,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2022-01-10 06:36:17,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 622. [2022-01-10 06:36:17,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 454 states have (on average 1.2995594713656389) internal successors, (590), 502 states have internal predecessors, (590), 103 states have call successors, (103), 64 states have call predecessors, (103), 64 states have return successors, (139), 102 states have call predecessors, (139), 103 states have call successors, (139) [2022-01-10 06:36:17,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 832 transitions. [2022-01-10 06:36:17,847 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 832 transitions. Word has length 92 [2022-01-10 06:36:17,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:36:17,849 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 832 transitions. [2022-01-10 06:36:17,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:36:17,850 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 832 transitions. [2022-01-10 06:36:17,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 06:36:17,857 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:36:17,857 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:36:17,870 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 06:36:18,069 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 06:36:18,070 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:36:18,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:36:18,070 INFO L85 PathProgramCache]: Analyzing trace with hash -388283735, now seen corresponding path program 1 times [2022-01-10 06:36:18,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:36:18,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [401307216] [2022-01-10 06:36:18,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:36:18,074 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:36:18,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:36:18,076 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 06:36:18,078 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 06:36:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:36:18,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 06:36:18,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:36:18,364 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-01-10 06:36:18,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:36:18,365 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:36:18,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [401307216] [2022-01-10 06:36:18,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [401307216] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:36:18,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:36:18,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:36:18,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18063481] [2022-01-10 06:36:18,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:36:18,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:36:18,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:36:18,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:36:18,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:36:18,367 INFO L87 Difference]: Start difference. First operand 622 states and 832 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:36:18,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:36:18,421 INFO L93 Difference]: Finished difference Result 1261 states and 1768 transitions. [2022-01-10 06:36:18,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:36:18,422 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 92 [2022-01-10 06:36:18,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:36:18,426 INFO L225 Difference]: With dead ends: 1261 [2022-01-10 06:36:18,426 INFO L226 Difference]: Without dead ends: 662 [2022-01-10 06:36:18,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 88 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 06:36:18,430 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 14 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:36:18,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 699 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:36:18,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2022-01-10 06:36:18,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 634. [2022-01-10 06:36:18,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 466 states have (on average 1.2918454935622317) internal successors, (602), 514 states have internal predecessors, (602), 103 states have call successors, (103), 64 states have call predecessors, (103), 64 states have return successors, (139), 102 states have call predecessors, (139), 103 states have call successors, (139) [2022-01-10 06:36:18,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 844 transitions. [2022-01-10 06:36:18,465 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 844 transitions. Word has length 92 [2022-01-10 06:36:18,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:36:18,465 INFO L470 AbstractCegarLoop]: Abstraction has 634 states and 844 transitions. [2022-01-10 06:36:18,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:36:18,465 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 844 transitions. [2022-01-10 06:36:18,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 06:36:18,468 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:36:18,468 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:36:18,479 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 06:36:18,677 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 06:36:18,678 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:36:18,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:36:18,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1534944299, now seen corresponding path program 1 times [2022-01-10 06:36:18,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:36:18,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851561108] [2022-01-10 06:36:18,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:36:18,679 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:36:18,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:36:18,680 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 06:36:18,682 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 06:36:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:36:18,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:36:18,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:36:18,938 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-01-10 06:36:18,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:36:18,939 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:36:18,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [851561108] [2022-01-10 06:36:18,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [851561108] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:36:18,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:36:18,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:36:18,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677517634] [2022-01-10 06:36:18,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:36:18,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:36:18,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:36:18,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:36:18,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:36:18,945 INFO L87 Difference]: Start difference. First operand 634 states and 844 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:36:18,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:36:18,984 INFO L93 Difference]: Finished difference Result 1131 states and 1571 transitions. [2022-01-10 06:36:18,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:36:18,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 92 [2022-01-10 06:36:18,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:36:18,989 INFO L225 Difference]: With dead ends: 1131 [2022-01-10 06:36:18,989 INFO L226 Difference]: Without dead ends: 520 [2022-01-10 06:36:18,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:36:18,992 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 13 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:36:18,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 524 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:36:18,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-01-10 06:36:19,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 502. [2022-01-10 06:36:19,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 366 states have (on average 1.2868852459016393) internal successors, (471), 407 states have internal predecessors, (471), 86 states have call successors, (86), 51 states have call predecessors, (86), 49 states have return successors, (106), 79 states have call predecessors, (106), 86 states have call successors, (106) [2022-01-10 06:36:19,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 663 transitions. [2022-01-10 06:36:19,028 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 663 transitions. Word has length 92 [2022-01-10 06:36:19,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:36:19,029 INFO L470 AbstractCegarLoop]: Abstraction has 502 states and 663 transitions. [2022-01-10 06:36:19,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:36:19,029 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 663 transitions. [2022-01-10 06:36:19,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-10 06:36:19,031 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:36:19,031 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:36:19,046 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 06:36:19,246 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 06:36:19,246 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:36:19,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:36:19,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1664630151, now seen corresponding path program 1 times [2022-01-10 06:36:19,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:36:19,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883368895] [2022-01-10 06:36:19,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:36:19,247 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:36:19,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:36:19,249 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 06:36:19,251 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 06:36:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:36:19,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 06:36:19,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:36:19,608 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-01-10 06:36:19,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:36:19,608 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:36:19,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883368895] [2022-01-10 06:36:19,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883368895] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:36:19,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:36:19,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:36:19,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38464820] [2022-01-10 06:36:19,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:36:19,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:36:19,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:36:19,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:36:19,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:36:19,610 INFO L87 Difference]: Start difference. First operand 502 states and 663 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:36:20,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:36:20,459 INFO L93 Difference]: Finished difference Result 1569 states and 2153 transitions. [2022-01-10 06:36:20,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 06:36:20,461 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 96 [2022-01-10 06:36:20,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:36:20,467 INFO L225 Difference]: With dead ends: 1569 [2022-01-10 06:36:20,467 INFO L226 Difference]: Without dead ends: 1222 [2022-01-10 06:36:20,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-01-10 06:36:20,471 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 373 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 06:36:20,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 856 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 06:36:20,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-01-10 06:36:20,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1153. [2022-01-10 06:36:20,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 845 states have (on average 1.2769230769230768) internal successors, (1079), 941 states have internal predecessors, (1079), 189 states have call successors, (189), 108 states have call predecessors, (189), 118 states have return successors, (247), 185 states have call predecessors, (247), 189 states have call successors, (247) [2022-01-10 06:36:20,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1515 transitions. [2022-01-10 06:36:20,528 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1515 transitions. Word has length 96 [2022-01-10 06:36:20,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:36:20,528 INFO L470 AbstractCegarLoop]: Abstraction has 1153 states and 1515 transitions. [2022-01-10 06:36:20,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:36:20,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1515 transitions. [2022-01-10 06:36:20,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:36:20,531 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:36:20,531 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:36:20,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-01-10 06:36:20,741 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 06:36:20,741 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:36:20,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:36:20,742 INFO L85 PathProgramCache]: Analyzing trace with hash -387681602, now seen corresponding path program 1 times [2022-01-10 06:36:20,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:36:20,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1213562383] [2022-01-10 06:36:20,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:36:20,743 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:36:20,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:36:20,744 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 06:36:20,751 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 06:36:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:36:20,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:36:20,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:36:21,045 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-01-10 06:36:21,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:36:21,045 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:36:21,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1213562383] [2022-01-10 06:36:21,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1213562383] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:36:21,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:36:21,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:36:21,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754286372] [2022-01-10 06:36:21,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:36:21,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:36:21,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:36:21,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:36:21,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:36:21,047 INFO L87 Difference]: Start difference. First operand 1153 states and 1515 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:36:21,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:36:21,133 INFO L93 Difference]: Finished difference Result 2436 states and 3211 transitions. [2022-01-10 06:36:21,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:36:21,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 127 [2022-01-10 06:36:21,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:36:21,140 INFO L225 Difference]: With dead ends: 2436 [2022-01-10 06:36:21,141 INFO L226 Difference]: Without dead ends: 1306 [2022-01-10 06:36:21,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 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 06:36:21,145 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 118 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:36:21,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 235 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:36:21,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2022-01-10 06:36:21,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 1298. [2022-01-10 06:36:21,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 957 states have (on average 1.2748171368861023) internal successors, (1220), 1060 states have internal predecessors, (1220), 207 states have call successors, (207), 123 states have call predecessors, (207), 133 states have return successors, (271), 202 states have call predecessors, (271), 207 states have call successors, (271) [2022-01-10 06:36:21,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 1698 transitions. [2022-01-10 06:36:21,223 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 1698 transitions. Word has length 127 [2022-01-10 06:36:21,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:36:21,224 INFO L470 AbstractCegarLoop]: Abstraction has 1298 states and 1698 transitions. [2022-01-10 06:36:21,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:36:21,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 1698 transitions. [2022-01-10 06:36:21,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-10 06:36:21,228 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:36:21,228 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:36:21,238 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 06:36:21,438 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 06:36:21,438 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:36:21,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:36:21,439 INFO L85 PathProgramCache]: Analyzing trace with hash 534729444, now seen corresponding path program 1 times [2022-01-10 06:36:21,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:36:21,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641359880] [2022-01-10 06:36:21,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:36:21,440 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:36:21,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:36:21,441 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 06:36:21,442 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 06:36:21,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:36:21,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:36:21,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:36:21,757 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-01-10 06:36:21,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:36:21,757 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:36:21,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641359880] [2022-01-10 06:36:21,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641359880] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:36:21,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:36:21,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:36:21,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066615464] [2022-01-10 06:36:21,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:36:21,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:36:21,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:36:21,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:36:21,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:36:21,759 INFO L87 Difference]: Start difference. First operand 1298 states and 1698 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 06:36:21,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:36:21,829 INFO L93 Difference]: Finished difference Result 2864 states and 3852 transitions. [2022-01-10 06:36:21,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:36:21,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 136 [2022-01-10 06:36:21,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:36:21,840 INFO L225 Difference]: With dead ends: 2864 [2022-01-10 06:36:21,840 INFO L226 Difference]: Without dead ends: 1589 [2022-01-10 06:36:21,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 134 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 06:36:21,847 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 94 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:36:21,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 352 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:36:21,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2022-01-10 06:36:21,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1589. [2022-01-10 06:36:21,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1177 states have (on average 1.2633814783347495) internal successors, (1487), 1288 states have internal predecessors, (1487), 242 states have call successors, (242), 159 states have call predecessors, (242), 169 states have return successors, (341), 234 states have call predecessors, (341), 242 states have call successors, (341) [2022-01-10 06:36:21,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2070 transitions. [2022-01-10 06:36:21,930 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2070 transitions. Word has length 136 [2022-01-10 06:36:21,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:36:21,930 INFO L470 AbstractCegarLoop]: Abstraction has 1589 states and 2070 transitions. [2022-01-10 06:36:21,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 06:36:21,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2070 transitions. [2022-01-10 06:36:21,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-01-10 06:36:21,936 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:36:21,936 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:36:21,948 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 06:36:22,145 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 06:36:22,146 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:36:22,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:36:22,146 INFO L85 PathProgramCache]: Analyzing trace with hash -727153918, now seen corresponding path program 1 times [2022-01-10 06:36:22,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:36:22,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358465793] [2022-01-10 06:36:22,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:36:22,147 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:36:22,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:36:22,147 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 06:36:22,148 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 06:36:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:36:22,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:36:22,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:36:22,507 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-01-10 06:36:22,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:36:22,875 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-01-10 06:36:22,875 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:36:22,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1358465793] [2022-01-10 06:36:22,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1358465793] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:36:22,875 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:36:22,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-01-10 06:36:22,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240153461] [2022-01-10 06:36:22,876 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:36:22,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 06:36:22,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:36:22,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 06:36:22,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-10 06:36:22,878 INFO L87 Difference]: Start difference. First operand 1589 states and 2070 transitions. Second operand has 10 states, 10 states have (on average 13.6) internal successors, (136), 8 states have internal predecessors, (136), 5 states have call successors, (23), 4 states have call predecessors, (23), 6 states have return successors, (26), 7 states have call predecessors, (26), 5 states have call successors, (26) [2022-01-10 06:36:23,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:36:23,307 INFO L93 Difference]: Finished difference Result 3160 states and 4212 transitions. [2022-01-10 06:36:23,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 06:36:23,308 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.6) internal successors, (136), 8 states have internal predecessors, (136), 5 states have call successors, (23), 4 states have call predecessors, (23), 6 states have return successors, (26), 7 states have call predecessors, (26), 5 states have call successors, (26) Word has length 138 [2022-01-10 06:36:23,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:36:23,319 INFO L225 Difference]: With dead ends: 3160 [2022-01-10 06:36:23,319 INFO L226 Difference]: Without dead ends: 2057 [2022-01-10 06:36:23,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2022-01-10 06:36:23,324 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 318 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:36:23,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 1601 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:36:23,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2057 states. [2022-01-10 06:36:23,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2057 to 1885. [2022-01-10 06:36:23,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1885 states, 1397 states have (on average 1.2498210450966356) internal successors, (1746), 1524 states have internal predecessors, (1746), 278 states have call successors, (278), 195 states have call predecessors, (278), 209 states have return successors, (384), 277 states have call predecessors, (384), 278 states have call successors, (384) [2022-01-10 06:36:23,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 2408 transitions. [2022-01-10 06:36:23,459 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 2408 transitions. Word has length 138 [2022-01-10 06:36:23,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:36:23,460 INFO L470 AbstractCegarLoop]: Abstraction has 1885 states and 2408 transitions. [2022-01-10 06:36:23,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.6) internal successors, (136), 8 states have internal predecessors, (136), 5 states have call successors, (23), 4 states have call predecessors, (23), 6 states have return successors, (26), 7 states have call predecessors, (26), 5 states have call successors, (26) [2022-01-10 06:36:23,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 2408 transitions. [2022-01-10 06:36:23,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-01-10 06:36:23,468 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:36:23,469 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:36:23,481 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 06:36:23,678 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 06:36:23,679 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:36:23,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:36:23,679 INFO L85 PathProgramCache]: Analyzing trace with hash -729053252, now seen corresponding path program 1 times [2022-01-10 06:36:23,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:36:23,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [972377159] [2022-01-10 06:36:23,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:36:23,680 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:36:23,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:36:23,681 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 06:36:23,683 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 06:36:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:36:23,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 06:36:23,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:36:24,280 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 142 proven. 14 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-01-10 06:36:24,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:36:25,007 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 78 proven. 41 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-01-10 06:36:25,007 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:36:25,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [972377159] [2022-01-10 06:36:25,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [972377159] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:36:25,007 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:36:25,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2022-01-10 06:36:25,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091818082] [2022-01-10 06:36:25,008 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:36:25,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-10 06:36:25,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:36:25,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-10 06:36:25,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-01-10 06:36:25,009 INFO L87 Difference]: Start difference. First operand 1885 states and 2408 transitions. Second operand has 19 states, 19 states have (on average 10.947368421052632) internal successors, (208), 18 states have internal predecessors, (208), 10 states have call successors, (40), 6 states have call predecessors, (40), 9 states have return successors, (42), 10 states have call predecessors, (42), 10 states have call successors, (42) [2022-01-10 06:36:27,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:36:27,337 INFO L93 Difference]: Finished difference Result 5932 states and 7900 transitions. [2022-01-10 06:36:27,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-10 06:36:27,338 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 10.947368421052632) internal successors, (208), 18 states have internal predecessors, (208), 10 states have call successors, (40), 6 states have call predecessors, (40), 9 states have return successors, (42), 10 states have call predecessors, (42), 10 states have call successors, (42) Word has length 229 [2022-01-10 06:36:27,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:36:27,360 INFO L225 Difference]: With dead ends: 5932 [2022-01-10 06:36:27,360 INFO L226 Difference]: Without dead ends: 4070 [2022-01-10 06:36:27,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=424, Invalid=1738, Unknown=0, NotChecked=0, Total=2162 [2022-01-10 06:36:27,370 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 2140 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 1985 mSolverCounterSat, 952 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2155 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 2937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 952 IncrementalHoareTripleChecker+Valid, 1985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 06:36:27,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2155 Valid, 1235 Invalid, 2937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [952 Valid, 1985 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 06:36:27,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4070 states. [2022-01-10 06:36:27,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4070 to 3882. [2022-01-10 06:36:27,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3882 states, 2861 states have (on average 1.246067808458581) internal successors, (3565), 3147 states have internal predecessors, (3565), 566 states have call successors, (566), 413 states have call predecessors, (566), 454 states have return successors, (851), 561 states have call predecessors, (851), 566 states have call successors, (851) [2022-01-10 06:36:27,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3882 states to 3882 states and 4982 transitions. [2022-01-10 06:36:27,577 INFO L78 Accepts]: Start accepts. Automaton has 3882 states and 4982 transitions. Word has length 229 [2022-01-10 06:36:27,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:36:27,578 INFO L470 AbstractCegarLoop]: Abstraction has 3882 states and 4982 transitions. [2022-01-10 06:36:27,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.947368421052632) internal successors, (208), 18 states have internal predecessors, (208), 10 states have call successors, (40), 6 states have call predecessors, (40), 9 states have return successors, (42), 10 states have call predecessors, (42), 10 states have call successors, (42) [2022-01-10 06:36:27,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3882 states and 4982 transitions. [2022-01-10 06:36:27,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-01-10 06:36:27,588 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:36:27,588 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:36:27,598 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 06:36:27,798 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 06:36:27,799 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:36:27,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:36:27,799 INFO L85 PathProgramCache]: Analyzing trace with hash -768523450, now seen corresponding path program 1 times [2022-01-10 06:36:27,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:36:27,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516917165] [2022-01-10 06:36:27,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:36:27,800 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:36:27,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:36:27,801 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 06:36:27,802 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 06:36:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:36:27,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 06:36:27,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:36:28,330 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 192 proven. 12 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-01-10 06:36:28,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:36:29,032 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 107 proven. 63 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-01-10 06:36:29,032 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:36:29,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516917165] [2022-01-10 06:36:29,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516917165] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:36:29,032 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:36:29,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-01-10 06:36:29,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926811232] [2022-01-10 06:36:29,033 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:36:29,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 06:36:29,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:36:29,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 06:36:29,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-01-10 06:36:29,037 INFO L87 Difference]: Start difference. First operand 3882 states and 4982 transitions. Second operand has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 12 states have internal predecessors, (220), 6 states have call successors, (39), 4 states have call predecessors, (39), 10 states have return successors, (45), 8 states have call predecessors, (45), 6 states have call successors, (45) [2022-01-10 06:36:29,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:36:29,744 INFO L93 Difference]: Finished difference Result 7432 states and 9593 transitions. [2022-01-10 06:36:29,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 06:36:29,745 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 12 states have internal predecessors, (220), 6 states have call successors, (39), 4 states have call predecessors, (39), 10 states have return successors, (45), 8 states have call predecessors, (45), 6 states have call successors, (45) Word has length 241 [2022-01-10 06:36:29,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:36:29,767 INFO L225 Difference]: With dead ends: 7432 [2022-01-10 06:36:29,767 INFO L226 Difference]: Without dead ends: 4036 [2022-01-10 06:36:29,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2022-01-10 06:36:29,780 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 358 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:36:29,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 921 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 06:36:29,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4036 states. [2022-01-10 06:36:29,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4036 to 3786. [2022-01-10 06:36:29,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3786 states, 2795 states have (on average 1.2389982110912343) internal successors, (3463), 3063 states have internal predecessors, (3463), 534 states have call successors, (534), 405 states have call predecessors, (534), 456 states have return successors, (793), 547 states have call predecessors, (793), 534 states have call successors, (793) [2022-01-10 06:36:29,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3786 states to 3786 states and 4790 transitions. [2022-01-10 06:36:30,054 INFO L78 Accepts]: Start accepts. Automaton has 3786 states and 4790 transitions. Word has length 241 [2022-01-10 06:36:30,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:36:30,055 INFO L470 AbstractCegarLoop]: Abstraction has 3786 states and 4790 transitions. [2022-01-10 06:36:30,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 12 states have internal predecessors, (220), 6 states have call successors, (39), 4 states have call predecessors, (39), 10 states have return successors, (45), 8 states have call predecessors, (45), 6 states have call successors, (45) [2022-01-10 06:36:30,055 INFO L276 IsEmpty]: Start isEmpty. Operand 3786 states and 4790 transitions. [2022-01-10 06:36:30,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-01-10 06:36:30,062 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:36:30,063 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:36:30,076 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 06:36:30,273 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 06:36:30,273 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:36:30,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:36:30,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1377572381, now seen corresponding path program 1 times [2022-01-10 06:36:30,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:36:30,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1747075558] [2022-01-10 06:36:30,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:36:30,275 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:36:30,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:36:30,276 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 06:36:30,277 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 06:36:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:36:30,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:36:30,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:36:30,694 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-01-10 06:36:30,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:36:30,694 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:36:30,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1747075558] [2022-01-10 06:36:30,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1747075558] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:36:30,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:36:30,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:36:30,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752632957] [2022-01-10 06:36:30,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:36:30,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:36:30,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:36:30,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:36:30,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:36:30,695 INFO L87 Difference]: Start difference. First operand 3786 states and 4790 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-01-10 06:36:30,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:36:30,965 INFO L93 Difference]: Finished difference Result 11074 states and 14278 transitions. [2022-01-10 06:36:30,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:36:30,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 242 [2022-01-10 06:36:30,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:36:31,001 INFO L225 Difference]: With dead ends: 11074 [2022-01-10 06:36:31,001 INFO L226 Difference]: Without dead ends: 7311 [2022-01-10 06:36:31,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 240 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 06:36:31,015 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 99 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:36:31,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 457 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:36:31,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7311 states. [2022-01-10 06:36:31,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7311 to 7309. [2022-01-10 06:36:31,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7309 states, 5433 states have (on average 1.2378060003681208) internal successors, (6725), 5892 states have internal predecessors, (6725), 974 states have call successors, (974), 799 states have call predecessors, (974), 901 states have return successors, (1606), 968 states have call predecessors, (1606), 974 states have call successors, (1606) [2022-01-10 06:36:31,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7309 states to 7309 states and 9305 transitions. [2022-01-10 06:36:31,408 INFO L78 Accepts]: Start accepts. Automaton has 7309 states and 9305 transitions. Word has length 242 [2022-01-10 06:36:31,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:36:31,410 INFO L470 AbstractCegarLoop]: Abstraction has 7309 states and 9305 transitions. [2022-01-10 06:36:31,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-01-10 06:36:31,411 INFO L276 IsEmpty]: Start isEmpty. Operand 7309 states and 9305 transitions. [2022-01-10 06:36:31,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-01-10 06:36:31,428 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:36:31,428 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:36:31,443 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 06:36:31,639 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 06:36:31,639 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:36:31,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:36:31,640 INFO L85 PathProgramCache]: Analyzing trace with hash -900332974, now seen corresponding path program 1 times [2022-01-10 06:36:31,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:36:31,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760884603] [2022-01-10 06:36:31,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:36:31,641 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:36:31,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:36:31,642 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 06:36:31,644 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 06:36:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:36:31,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:36:31,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:36:32,073 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-01-10 06:36:32,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:36:32,074 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:36:32,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760884603] [2022-01-10 06:36:32,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [760884603] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:36:32,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:36:32,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:36:32,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266374588] [2022-01-10 06:36:32,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:36:32,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:36:32,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:36:32,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:36:32,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:36:32,075 INFO L87 Difference]: Start difference. First operand 7309 states and 9305 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-01-10 06:36:32,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:36:32,372 INFO L93 Difference]: Finished difference Result 11183 states and 14133 transitions. [2022-01-10 06:36:32,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:36:32,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 244 [2022-01-10 06:36:32,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:36:32,415 INFO L225 Difference]: With dead ends: 11183 [2022-01-10 06:36:32,415 INFO L226 Difference]: Without dead ends: 7452 [2022-01-10 06:36:32,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 242 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 06:36:32,432 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 85 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:36:32,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 394 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:36:32,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7452 states. [2022-01-10 06:36:32,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7452 to 7450. [2022-01-10 06:36:32,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7450 states, 5543 states have (on average 1.233267183835468) internal successors, (6836), 6007 states have internal predecessors, (6836), 990 states have call successors, (990), 816 states have call predecessors, (990), 916 states have return successors, (1462), 981 states have call predecessors, (1462), 990 states have call successors, (1462) [2022-01-10 06:36:32,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7450 states to 7450 states and 9288 transitions. [2022-01-10 06:36:32,809 INFO L78 Accepts]: Start accepts. Automaton has 7450 states and 9288 transitions. Word has length 244 [2022-01-10 06:36:32,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:36:32,809 INFO L470 AbstractCegarLoop]: Abstraction has 7450 states and 9288 transitions. [2022-01-10 06:36:32,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-01-10 06:36:32,810 INFO L276 IsEmpty]: Start isEmpty. Operand 7450 states and 9288 transitions. [2022-01-10 06:36:32,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-01-10 06:36:32,827 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:36:32,827 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:36:32,839 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 06:36:33,037 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 06:36:33,038 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:36:33,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:36:33,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1248712192, now seen corresponding path program 1 times [2022-01-10 06:36:33,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:36:33,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516769307] [2022-01-10 06:36:33,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:36:33,039 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:36:33,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:36:33,040 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 06:36:33,040 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 06:36:33,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:36:33,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:36:33,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:36:33,500 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-01-10 06:36:33,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:36:33,500 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:36:33,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516769307] [2022-01-10 06:36:33,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516769307] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:36:33,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:36:33,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:36:33,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475955346] [2022-01-10 06:36:33,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:36:33,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:36:33,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:36:33,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:36:33,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:36:33,502 INFO L87 Difference]: Start difference. First operand 7450 states and 9288 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-01-10 06:36:33,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:36:33,980 INFO L93 Difference]: Finished difference Result 21270 states and 27142 transitions. [2022-01-10 06:36:33,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:36:33,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 244 [2022-01-10 06:36:33,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:36:34,048 INFO L225 Difference]: With dead ends: 21270 [2022-01-10 06:36:34,048 INFO L226 Difference]: Without dead ends: 13984 [2022-01-10 06:36:34,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 242 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 06:36:34,075 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 99 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:36:34,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 456 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:36:34,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13984 states. [2022-01-10 06:36:34,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13984 to 13952. [2022-01-10 06:36:34,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13952 states, 10423 states have (on average 1.2293965269116378) internal successors, (12814), 11185 states have internal predecessors, (12814), 1774 states have call successors, (1774), 1578 states have call predecessors, (1774), 1754 states have return successors, (3024), 1721 states have call predecessors, (3024), 1774 states have call successors, (3024) [2022-01-10 06:36:34,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13952 states to 13952 states and 17612 transitions. [2022-01-10 06:36:34,866 INFO L78 Accepts]: Start accepts. Automaton has 13952 states and 17612 transitions. Word has length 244 [2022-01-10 06:36:34,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:36:34,867 INFO L470 AbstractCegarLoop]: Abstraction has 13952 states and 17612 transitions. [2022-01-10 06:36:34,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-01-10 06:36:34,867 INFO L276 IsEmpty]: Start isEmpty. Operand 13952 states and 17612 transitions. [2022-01-10 06:36:34,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-01-10 06:36:34,892 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:36:34,892 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:36:34,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 06:36:35,104 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 06:36:35,104 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:36:35,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:36:35,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1953278085, now seen corresponding path program 1 times [2022-01-10 06:36:35,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:36:35,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1100779237] [2022-01-10 06:36:35,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:36:35,105 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:36:35,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:36:35,107 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 06:36:35,109 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 06:36:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:36:35,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:36:35,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:36:35,598 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-01-10 06:36:35,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:36:35,599 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:36:35,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1100779237] [2022-01-10 06:36:35,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1100779237] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:36:35,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:36:35,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:36:35,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667820101] [2022-01-10 06:36:35,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:36:35,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:36:35,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:36:35,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:36:35,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:36:35,600 INFO L87 Difference]: Start difference. First operand 13952 states and 17612 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-01-10 06:36:36,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:36:36,163 INFO L93 Difference]: Finished difference Result 21203 states and 26530 transitions. [2022-01-10 06:36:36,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:36:36,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 246 [2022-01-10 06:36:36,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:36:36,212 INFO L225 Difference]: With dead ends: 21203 [2022-01-10 06:36:36,212 INFO L226 Difference]: Without dead ends: 13977 [2022-01-10 06:36:36,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 244 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 06:36:36,240 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 74 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:36:36,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 406 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:36:36,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13977 states. [2022-01-10 06:36:36,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13977 to 13975. [2022-01-10 06:36:36,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13975 states, 10437 states have (on average 1.2241065440260612) internal successors, (12776), 11199 states have internal predecessors, (12776), 1782 states have call successors, (1782), 1587 states have call predecessors, (1782), 1755 states have return successors, (2598), 1721 states have call predecessors, (2598), 1782 states have call successors, (2598) [2022-01-10 06:36:36,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13975 states to 13975 states and 17156 transitions. [2022-01-10 06:36:36,872 INFO L78 Accepts]: Start accepts. Automaton has 13975 states and 17156 transitions. Word has length 246 [2022-01-10 06:36:36,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:36:36,873 INFO L470 AbstractCegarLoop]: Abstraction has 13975 states and 17156 transitions. [2022-01-10 06:36:36,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-01-10 06:36:36,873 INFO L276 IsEmpty]: Start isEmpty. Operand 13975 states and 17156 transitions. [2022-01-10 06:36:36,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-01-10 06:36:36,896 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:36:36,896 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:36:36,909 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 06:36:37,107 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 06:36:37,108 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:36:37,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:36:37,108 INFO L85 PathProgramCache]: Analyzing trace with hash -75312824, now seen corresponding path program 1 times [2022-01-10 06:36:37,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:36:37,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55227278] [2022-01-10 06:36:37,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:36:37,109 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:36:37,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:36:37,110 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 06:36:37,113 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 06:36:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:36:37,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:36:37,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:36:37,641 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-01-10 06:36:37,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:36:37,641 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:36:37,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55227278] [2022-01-10 06:36:37,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [55227278] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:36:37,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:36:37,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:36:37,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692783211] [2022-01-10 06:36:37,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:36:37,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:36:37,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:36:37,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:36:37,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:36:37,645 INFO L87 Difference]: Start difference. First operand 13975 states and 17156 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-01-10 06:36:38,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:36:38,133 INFO L93 Difference]: Finished difference Result 21911 states and 26844 transitions. [2022-01-10 06:36:38,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:36:38,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 251 [2022-01-10 06:36:38,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:36:38,160 INFO L225 Difference]: With dead ends: 21911 [2022-01-10 06:36:38,160 INFO L226 Difference]: Without dead ends: 8111 [2022-01-10 06:36:38,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 249 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 06:36:38,185 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 39 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:36:38,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 380 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:36:38,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8111 states. [2022-01-10 06:36:38,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8111 to 8027. [2022-01-10 06:36:38,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8027 states, 6026 states have (on average 1.2180550945901096) internal successors, (7340), 6461 states have internal predecessors, (7340), 1007 states have call successors, (1007), 908 states have call predecessors, (1007), 993 states have return successors, (1372), 972 states have call predecessors, (1372), 1007 states have call successors, (1372) [2022-01-10 06:36:38,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8027 states to 8027 states and 9719 transitions. [2022-01-10 06:36:38,486 INFO L78 Accepts]: Start accepts. Automaton has 8027 states and 9719 transitions. Word has length 251 [2022-01-10 06:36:38,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:36:38,487 INFO L470 AbstractCegarLoop]: Abstraction has 8027 states and 9719 transitions. [2022-01-10 06:36:38,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-01-10 06:36:38,487 INFO L276 IsEmpty]: Start isEmpty. Operand 8027 states and 9719 transitions. [2022-01-10 06:36:38,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-01-10 06:36:38,498 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:36:38,498 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:36:38,508 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 06:36:38,707 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 06:36:38,708 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:36:38,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:36:38,708 INFO L85 PathProgramCache]: Analyzing trace with hash 327559667, now seen corresponding path program 1 times [2022-01-10 06:36:38,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:36:38,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1535741249] [2022-01-10 06:36:38,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:36:38,709 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:36:38,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:36:38,710 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 06:36:38,739 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 06:36:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:36:38,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:36:38,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:36:39,320 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-01-10 06:36:39,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:36:39,320 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:36:39,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1535741249] [2022-01-10 06:36:39,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1535741249] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:36:39,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:36:39,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 06:36:39,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299030929] [2022-01-10 06:36:39,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:36:39,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:36:39,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:36:39,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:36:39,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:36:39,322 INFO L87 Difference]: Start difference. First operand 8027 states and 9719 transitions. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 5 states have internal predecessors, (128), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2022-01-10 06:36:39,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:36:39,983 INFO L93 Difference]: Finished difference Result 23867 states and 29207 transitions. [2022-01-10 06:36:39,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:36:39,984 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 5 states have internal predecessors, (128), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 255 [2022-01-10 06:36:39,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:36:40,045 INFO L225 Difference]: With dead ends: 23867 [2022-01-10 06:36:40,045 INFO L226 Difference]: Without dead ends: 15885 [2022-01-10 06:36:40,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:36:40,070 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 76 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:36:40,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 852 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:36:40,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15885 states. [2022-01-10 06:36:40,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15885 to 15825. [2022-01-10 06:36:40,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15825 states, 11888 states have (on average 1.2049125168236878) internal successors, (14324), 12737 states have internal predecessors, (14324), 1972 states have call successors, (1972), 1793 states have call predecessors, (1972), 1964 states have return successors, (2819), 1914 states have call predecessors, (2819), 1972 states have call successors, (2819) [2022-01-10 06:36:40,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15825 states to 15825 states and 19115 transitions. [2022-01-10 06:36:40,861 INFO L78 Accepts]: Start accepts. Automaton has 15825 states and 19115 transitions. Word has length 255 [2022-01-10 06:36:40,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:36:40,861 INFO L470 AbstractCegarLoop]: Abstraction has 15825 states and 19115 transitions. [2022-01-10 06:36:40,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 5 states have internal predecessors, (128), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2022-01-10 06:36:40,862 INFO L276 IsEmpty]: Start isEmpty. Operand 15825 states and 19115 transitions. [2022-01-10 06:36:40,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-01-10 06:36:40,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:36:40,882 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:36:40,894 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 06:36:41,092 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 06:36:41,093 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:36:41,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:36:41,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1633406290, now seen corresponding path program 1 times [2022-01-10 06:36:41,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:36:41,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390486132] [2022-01-10 06:36:41,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:36:41,094 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:36:41,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:36:41,095 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 06:36:41,099 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 06:36:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:36:41,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 06:36:41,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:36:41,760 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 201 proven. 14 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-01-10 06:36:41,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:36:42,485 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 93 proven. 53 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2022-01-10 06:36:42,485 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:36:42,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [390486132] [2022-01-10 06:36:42,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [390486132] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:36:42,485 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:36:42,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 20 [2022-01-10 06:36:42,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705949779] [2022-01-10 06:36:42,486 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:36:42,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-10 06:36:42,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:36:42,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-10 06:36:42,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-01-10 06:36:42,487 INFO L87 Difference]: Start difference. First operand 15825 states and 19115 transitions. Second operand has 20 states, 20 states have (on average 11.75) internal successors, (235), 19 states have internal predecessors, (235), 13 states have call successors, (45), 7 states have call predecessors, (45), 10 states have return successors, (47), 11 states have call predecessors, (47), 13 states have call successors, (47) [2022-01-10 06:36:44,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:36:44,197 INFO L93 Difference]: Finished difference Result 26213 states and 32302 transitions. [2022-01-10 06:36:44,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 06:36:44,197 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 11.75) internal successors, (235), 19 states have internal predecessors, (235), 13 states have call successors, (45), 7 states have call predecessors, (45), 10 states have return successors, (47), 11 states have call predecessors, (47), 13 states have call successors, (47) Word has length 255 [2022-01-10 06:36:44,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:36:44,253 INFO L225 Difference]: With dead ends: 26213 [2022-01-10 06:36:44,253 INFO L226 Difference]: Without dead ends: 13506 [2022-01-10 06:36:44,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 494 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=180, Invalid=690, Unknown=0, NotChecked=0, Total=870 [2022-01-10 06:36:44,291 INFO L933 BasicCegarLoop]: 354 mSDtfsCounter, 1512 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 1660 mSolverCounterSat, 669 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 1572 SdHoareTripleChecker+Invalid, 2329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 669 IncrementalHoareTripleChecker+Valid, 1660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:36:44,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1521 Valid, 1572 Invalid, 2329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [669 Valid, 1660 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 06:36:44,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13506 states. [2022-01-10 06:36:44,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13506 to 12415. [2022-01-10 06:36:44,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12415 states, 9408 states have (on average 1.1849489795918366) internal successors, (11148), 9947 states have internal predecessors, (11148), 1544 states have call successors, (1544), 1413 states have call predecessors, (1544), 1462 states have return successors, (1926), 1456 states have call predecessors, (1926), 1544 states have call successors, (1926) [2022-01-10 06:36:44,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12415 states to 12415 states and 14618 transitions. [2022-01-10 06:36:44,992 INFO L78 Accepts]: Start accepts. Automaton has 12415 states and 14618 transitions. Word has length 255 [2022-01-10 06:36:44,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:36:44,993 INFO L470 AbstractCegarLoop]: Abstraction has 12415 states and 14618 transitions. [2022-01-10 06:36:44,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 11.75) internal successors, (235), 19 states have internal predecessors, (235), 13 states have call successors, (45), 7 states have call predecessors, (45), 10 states have return successors, (47), 11 states have call predecessors, (47), 13 states have call successors, (47) [2022-01-10 06:36:44,993 INFO L276 IsEmpty]: Start isEmpty. Operand 12415 states and 14618 transitions. [2022-01-10 06:36:45,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-01-10 06:36:45,013 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:36:45,014 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:36:45,027 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 06:36:45,224 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 06:36:45,225 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:36:45,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:36:45,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1764088484, now seen corresponding path program 1 times [2022-01-10 06:36:45,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:36:45,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781549716] [2022-01-10 06:36:45,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:36:45,226 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:36:45,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:36:45,227 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 06:36:45,229 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 06:36:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:36:45,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-10 06:36:45,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:36:45,900 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 180 proven. 77 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2022-01-10 06:36:45,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:36:46,851 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 97 proven. 126 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2022-01-10 06:36:46,851 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:36:46,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781549716] [2022-01-10 06:36:46,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1781549716] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:36:46,851 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:36:46,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 24 [2022-01-10 06:36:46,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753764686] [2022-01-10 06:36:46,852 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:36:46,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-10 06:36:46,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:36:46,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-10 06:36:46,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2022-01-10 06:36:46,853 INFO L87 Difference]: Start difference. First operand 12415 states and 14618 transitions. Second operand has 24 states, 24 states have (on average 10.333333333333334) internal successors, (248), 23 states have internal predecessors, (248), 14 states have call successors, (47), 7 states have call predecessors, (47), 13 states have return successors, (50), 14 states have call predecessors, (50), 14 states have call successors, (50) [2022-01-10 06:36:48,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:36:48,400 INFO L93 Difference]: Finished difference Result 18853 states and 22236 transitions. [2022-01-10 06:36:48,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-10 06:36:48,401 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 10.333333333333334) internal successors, (248), 23 states have internal predecessors, (248), 14 states have call successors, (47), 7 states have call predecessors, (47), 13 states have return successors, (50), 14 states have call predecessors, (50), 14 states have call successors, (50) Word has length 285 [2022-01-10 06:36:48,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:36:48,404 INFO L225 Difference]: With dead ends: 18853 [2022-01-10 06:36:48,404 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 06:36:48,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 544 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=324, Invalid=1082, Unknown=0, NotChecked=0, Total=1406 [2022-01-10 06:36:48,425 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 1693 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 1539 mSolverCounterSat, 763 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1708 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 2302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 763 IncrementalHoareTripleChecker+Valid, 1539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 06:36:48,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1708 Valid, 1342 Invalid, 2302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [763 Valid, 1539 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 06:36:48,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 06:36:48,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 06:36:48,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:36:48,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 06:36:48,428 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 285 [2022-01-10 06:36:48,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:36:48,428 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 06:36:48,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.333333333333334) internal successors, (248), 23 states have internal predecessors, (248), 14 states have call successors, (47), 7 states have call predecessors, (47), 13 states have return successors, (50), 14 states have call predecessors, (50), 14 states have call successors, (50) [2022-01-10 06:36:48,429 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 06:36:48,429 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 06:36:48,431 INFO L764 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-10 06:36:48,443 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 06:36:48,641 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 06:36:48,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.