/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/elevator_spec9_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:18:28,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:18:28,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:18:28,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:18:28,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:18:28,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:18:28,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:18:28,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:18:28,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:18:28,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:18:28,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:18:28,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:18:28,267 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:18:28,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:18:28,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:18:28,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:18:28,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:18:28,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:18:28,272 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:18:28,274 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:18:28,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:18:28,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:18:28,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:18:28,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:18:28,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:18:28,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:18:28,297 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:18:28,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:18:28,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:18:28,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:18:28,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:18:28,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:18:28,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:18:28,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:18:28,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:18:28,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:18:28,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:18:28,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:18:28,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:18:28,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:18:28,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:18:28,309 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 06:18:28,367 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:18:28,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:18:28,369 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:18:28,369 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:18:28,378 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:18:28,378 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:18:28,378 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:18:28,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:18:28,379 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:18:28,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:18:28,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:18:28,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:18:28,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:18:28,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:18:28,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:18:28,387 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:18:28,388 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:18:28,388 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:18:28,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:18:28,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:18:28,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:18:28,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:18:28,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:18:28,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:18:28,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:18:28,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:18:28,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:18:28,390 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:18:28,390 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:18:28,391 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:18:28,391 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:18:28,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:18:28,391 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:18:28,391 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:18:28,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:18:28,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:18:28,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:18:28,687 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:18:28,688 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:18:28,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product27.cil.c [2022-01-10 06:18:28,755 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/017b69c3a/741456620e35455f9de3b7127b371330/FLAG88860e3f6 [2022-01-10 06:18:29,266 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:18:29,266 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product27.cil.c [2022-01-10 06:18:29,303 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/017b69c3a/741456620e35455f9de3b7127b371330/FLAG88860e3f6 [2022-01-10 06:18:29,786 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/017b69c3a/741456620e35455f9de3b7127b371330 [2022-01-10 06:18:29,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:18:29,790 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:18:29,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:18:29,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:18:29,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:18:29,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:18:29" (1/1) ... [2022-01-10 06:18:29,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f238fe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:29, skipping insertion in model container [2022-01-10 06:18:29,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:18:29" (1/1) ... [2022-01-10 06:18:29,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:18:29,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:18:30,329 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/elevator_spec9_product27.cil.c[66437,66450] [2022-01-10 06:18:30,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:18:30,348 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 06:18:30,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:18:30,422 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/elevator_spec9_product27.cil.c[66437,66450] [2022-01-10 06:18:30,427 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:18:30,437 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:18:30,496 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/elevator_spec9_product27.cil.c[66437,66450] [2022-01-10 06:18:30,501 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:18:30,524 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:18:30,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:30 WrapperNode [2022-01-10 06:18:30,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:18:30,526 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:18:30,526 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:18:30,526 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:18:30,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:30" (1/1) ... [2022-01-10 06:18:30,559 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:30" (1/1) ... [2022-01-10 06:18:30,608 INFO L137 Inliner]: procedures = 97, calls = 339, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 1064 [2022-01-10 06:18:30,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:18:30,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:18:30,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:18:30,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:18:30,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:30" (1/1) ... [2022-01-10 06:18:30,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:30" (1/1) ... [2022-01-10 06:18:30,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:30" (1/1) ... [2022-01-10 06:18:30,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:30" (1/1) ... [2022-01-10 06:18:30,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:30" (1/1) ... [2022-01-10 06:18:30,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:30" (1/1) ... [2022-01-10 06:18:30,658 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:30" (1/1) ... [2022-01-10 06:18:30,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:18:30,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:18:30,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:18:30,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:18:30,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:30" (1/1) ... [2022-01-10 06:18:30,674 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:18:30,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:18:30,709 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 06:18:30,714 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 06:18:30,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:18:30,741 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-01-10 06:18:30,741 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-01-10 06:18:30,742 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-01-10 06:18:30,742 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-01-10 06:18:30,742 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-01-10 06:18:30,742 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-01-10 06:18:30,742 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-01-10 06:18:30,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-01-10 06:18:30,742 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-01-10 06:18:30,742 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-01-10 06:18:30,742 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-01-10 06:18:30,743 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-01-10 06:18:30,743 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-01-10 06:18:30,743 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-01-10 06:18:30,743 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-01-10 06:18:30,743 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-01-10 06:18:30,743 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-01-10 06:18:30,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-01-10 06:18:30,743 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-01-10 06:18:30,743 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-01-10 06:18:30,744 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-01-10 06:18:30,744 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-01-10 06:18:30,744 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-01-10 06:18:30,744 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-01-10 06:18:30,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:18:30,744 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-01-10 06:18:30,744 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-01-10 06:18:30,744 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-01-10 06:18:30,744 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-01-10 06:18:30,744 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-01-10 06:18:30,744 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-01-10 06:18:30,745 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-01-10 06:18:30,745 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-01-10 06:18:30,745 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-01-10 06:18:30,745 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-01-10 06:18:30,745 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-01-10 06:18:30,745 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-01-10 06:18:30,745 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-01-10 06:18:30,745 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-01-10 06:18:30,745 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2022-01-10 06:18:30,745 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2022-01-10 06:18:30,745 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-01-10 06:18:30,745 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-01-10 06:18:30,746 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-01-10 06:18:30,746 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-01-10 06:18:30,746 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-01-10 06:18:30,746 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-01-10 06:18:30,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:18:30,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:18:30,746 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-01-10 06:18:30,746 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-01-10 06:18:30,868 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:18:30,869 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:18:31,954 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:18:31,971 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:18:31,972 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 06:18:31,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:18:31 BoogieIcfgContainer [2022-01-10 06:18:31,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:18:31,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:18:31,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:18:31,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:18:31,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:18:29" (1/3) ... [2022-01-10 06:18:31,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba68746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:18:31, skipping insertion in model container [2022-01-10 06:18:31,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:30" (2/3) ... [2022-01-10 06:18:31,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba68746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:18:31, skipping insertion in model container [2022-01-10 06:18:31,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:18:31" (3/3) ... [2022-01-10 06:18:31,986 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product27.cil.c [2022-01-10 06:18:31,991 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:18:31,991 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:18:32,047 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:18:32,055 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 06:18:32,056 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:18:32,089 INFO L276 IsEmpty]: Start isEmpty. Operand has 560 states, 441 states have (on average 1.6938775510204083) internal successors, (747), 462 states have internal predecessors, (747), 93 states have call successors, (93), 24 states have call predecessors, (93), 24 states have return successors, (93), 87 states have call predecessors, (93), 93 states have call successors, (93) [2022-01-10 06:18:32,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 06:18:32,110 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:32,111 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:32,112 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:32,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:32,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1552478491, now seen corresponding path program 1 times [2022-01-10 06:18:32,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:32,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705922160] [2022-01-10 06:18:32,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:32,128 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:32,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:32,130 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 06:18:32,135 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 06:18:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:32,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 06:18:32,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:32,720 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 06:18:32,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:32,721 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:32,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705922160] [2022-01-10 06:18:32,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1705922160] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:32,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:32,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:18:32,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699471537] [2022-01-10 06:18:32,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:32,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 06:18:32,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:32,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 06:18:32,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:18:32,759 INFO L87 Difference]: Start difference. First operand has 560 states, 441 states have (on average 1.6938775510204083) internal successors, (747), 462 states have internal predecessors, (747), 93 states have call successors, (93), 24 states have call predecessors, (93), 24 states have return successors, (93), 87 states have call predecessors, (93), 93 states have call successors, (93) Second operand has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-01-10 06:18:32,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:32,837 INFO L93 Difference]: Finished difference Result 581 states and 963 transitions. [2022-01-10 06:18:32,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 06:18:32,839 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 104 [2022-01-10 06:18:32,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:32,856 INFO L225 Difference]: With dead ends: 581 [2022-01-10 06:18:32,856 INFO L226 Difference]: Without dead ends: 552 [2022-01-10 06:18:32,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 103 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 06:18:32,863 INFO L933 BasicCegarLoop]: 924 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, 924 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 06:18:32,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:18:32,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2022-01-10 06:18:32,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2022-01-10 06:18:32,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 435 states have (on average 1.6919540229885057) internal successors, (736), 454 states have internal predecessors, (736), 93 states have call successors, (93), 24 states have call predecessors, (93), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2022-01-10 06:18:32,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 917 transitions. [2022-01-10 06:18:32,970 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 917 transitions. Word has length 104 [2022-01-10 06:18:32,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:32,972 INFO L470 AbstractCegarLoop]: Abstraction has 552 states and 917 transitions. [2022-01-10 06:18:32,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-01-10 06:18:32,973 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 917 transitions. [2022-01-10 06:18:32,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 06:18:32,985 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:32,985 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:32,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 06:18:33,193 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 06:18:33,193 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:33,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:33,194 INFO L85 PathProgramCache]: Analyzing trace with hash -337581649, now seen corresponding path program 1 times [2022-01-10 06:18:33,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:33,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204800361] [2022-01-10 06:18:33,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:33,196 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:33,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:33,197 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 06:18:33,200 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 06:18:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:33,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:33,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:33,724 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 06:18:33,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:33,725 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:33,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [204800361] [2022-01-10 06:18:33,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [204800361] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:33,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:33,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:33,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126202365] [2022-01-10 06:18:33,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:33,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:33,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:33,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:33,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:33,728 INFO L87 Difference]: Start difference. First operand 552 states and 917 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:18:33,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:33,833 INFO L93 Difference]: Finished difference Result 1086 states and 1810 transitions. [2022-01-10 06:18:33,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:33,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 106 [2022-01-10 06:18:33,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:33,841 INFO L225 Difference]: With dead ends: 1086 [2022-01-10 06:18:33,841 INFO L226 Difference]: Without dead ends: 552 [2022-01-10 06:18:33,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 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 06:18:33,877 INFO L933 BasicCegarLoop]: 904 mSDtfsCounter, 14 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2707 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:33,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 2707 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:18:33,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2022-01-10 06:18:33,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2022-01-10 06:18:33,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 435 states have (on average 1.6896551724137931) internal successors, (735), 454 states have internal predecessors, (735), 93 states have call successors, (93), 24 states have call predecessors, (93), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2022-01-10 06:18:33,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 916 transitions. [2022-01-10 06:18:33,917 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 916 transitions. Word has length 106 [2022-01-10 06:18:33,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:33,919 INFO L470 AbstractCegarLoop]: Abstraction has 552 states and 916 transitions. [2022-01-10 06:18:33,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:18:33,920 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 916 transitions. [2022-01-10 06:18:33,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 06:18:33,927 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:33,927 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:33,946 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 06:18:34,141 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 06:18:34,141 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:34,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:34,142 INFO L85 PathProgramCache]: Analyzing trace with hash -203426835, now seen corresponding path program 1 times [2022-01-10 06:18:34,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:34,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427737419] [2022-01-10 06:18:34,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:34,143 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:34,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:34,146 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 06:18:34,148 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 06:18:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:34,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:34,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:34,630 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 06:18:34,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:34,631 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:34,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427737419] [2022-01-10 06:18:34,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427737419] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:34,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:34,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:34,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800511990] [2022-01-10 06:18:34,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:34,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:34,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:34,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:34,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:34,633 INFO L87 Difference]: Start difference. First operand 552 states and 916 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:18:34,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:34,695 INFO L93 Difference]: Finished difference Result 1086 states and 1809 transitions. [2022-01-10 06:18:34,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:34,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 107 [2022-01-10 06:18:34,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:34,700 INFO L225 Difference]: With dead ends: 1086 [2022-01-10 06:18:34,700 INFO L226 Difference]: Without dead ends: 552 [2022-01-10 06:18:34,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 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 06:18:34,704 INFO L933 BasicCegarLoop]: 904 mSDtfsCounter, 12 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2707 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:34,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 2707 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:18:34,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2022-01-10 06:18:34,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2022-01-10 06:18:34,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 435 states have (on average 1.6873563218390804) internal successors, (734), 454 states have internal predecessors, (734), 93 states have call successors, (93), 24 states have call predecessors, (93), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2022-01-10 06:18:34,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 915 transitions. [2022-01-10 06:18:34,728 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 915 transitions. Word has length 107 [2022-01-10 06:18:34,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:34,729 INFO L470 AbstractCegarLoop]: Abstraction has 552 states and 915 transitions. [2022-01-10 06:18:34,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:18:34,729 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 915 transitions. [2022-01-10 06:18:34,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-10 06:18:34,733 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:34,733 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:34,747 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 06:18:34,947 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 06:18:34,948 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:34,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:34,949 INFO L85 PathProgramCache]: Analyzing trace with hash 717422571, now seen corresponding path program 1 times [2022-01-10 06:18:34,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:34,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252275580] [2022-01-10 06:18:34,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:34,949 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:34,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:34,951 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 06:18:34,953 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 06:18:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:35,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:35,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:35,398 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 06:18:35,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:35,398 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:35,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [252275580] [2022-01-10 06:18:35,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [252275580] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:35,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:35,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:35,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922413180] [2022-01-10 06:18:35,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:35,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:35,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:35,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:35,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:35,400 INFO L87 Difference]: Start difference. First operand 552 states and 915 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:18:35,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:35,451 INFO L93 Difference]: Finished difference Result 1086 states and 1808 transitions. [2022-01-10 06:18:35,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:35,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 108 [2022-01-10 06:18:35,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:35,456 INFO L225 Difference]: With dead ends: 1086 [2022-01-10 06:18:35,456 INFO L226 Difference]: Without dead ends: 552 [2022-01-10 06:18:35,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 105 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 06:18:35,459 INFO L933 BasicCegarLoop]: 904 mSDtfsCounter, 10 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2707 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:35,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2707 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:18:35,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2022-01-10 06:18:35,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2022-01-10 06:18:35,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 435 states have (on average 1.6850574712643678) internal successors, (733), 454 states have internal predecessors, (733), 93 states have call successors, (93), 24 states have call predecessors, (93), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2022-01-10 06:18:35,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 914 transitions. [2022-01-10 06:18:35,479 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 914 transitions. Word has length 108 [2022-01-10 06:18:35,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:35,480 INFO L470 AbstractCegarLoop]: Abstraction has 552 states and 914 transitions. [2022-01-10 06:18:35,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:18:35,480 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 914 transitions. [2022-01-10 06:18:35,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-10 06:18:35,483 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:35,483 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:35,500 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 06:18:35,698 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 06:18:35,698 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:35,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:35,699 INFO L85 PathProgramCache]: Analyzing trace with hash 256000553, now seen corresponding path program 1 times [2022-01-10 06:18:35,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:35,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882788973] [2022-01-10 06:18:35,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:35,700 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:35,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:35,701 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 06:18:35,703 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 06:18:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:35,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:36,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:36,165 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 06:18:36,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:36,166 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:36,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882788973] [2022-01-10 06:18:36,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882788973] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:36,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:36,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:36,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764399620] [2022-01-10 06:18:36,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:36,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:36,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:36,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:36,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:36,168 INFO L87 Difference]: Start difference. First operand 552 states and 914 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:18:36,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:36,215 INFO L93 Difference]: Finished difference Result 1086 states and 1807 transitions. [2022-01-10 06:18:36,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:36,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 109 [2022-01-10 06:18:36,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:36,220 INFO L225 Difference]: With dead ends: 1086 [2022-01-10 06:18:36,220 INFO L226 Difference]: Without dead ends: 552 [2022-01-10 06:18:36,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 106 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 06:18:36,223 INFO L933 BasicCegarLoop]: 904 mSDtfsCounter, 8 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2707 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:36,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 2707 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:18:36,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2022-01-10 06:18:36,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2022-01-10 06:18:36,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 435 states have (on average 1.6827586206896552) internal successors, (732), 454 states have internal predecessors, (732), 93 states have call successors, (93), 24 states have call predecessors, (93), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2022-01-10 06:18:36,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 913 transitions. [2022-01-10 06:18:36,242 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 913 transitions. Word has length 109 [2022-01-10 06:18:36,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:36,242 INFO L470 AbstractCegarLoop]: Abstraction has 552 states and 913 transitions. [2022-01-10 06:18:36,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:18:36,242 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 913 transitions. [2022-01-10 06:18:36,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 06:18:36,245 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:36,245 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:36,261 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 06:18:36,459 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 06:18:36,459 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:36,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:36,460 INFO L85 PathProgramCache]: Analyzing trace with hash -106162649, now seen corresponding path program 1 times [2022-01-10 06:18:36,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:36,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009363441] [2022-01-10 06:18:36,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:36,460 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:36,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:36,461 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 06:18:36,462 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 06:18:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:36,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:36,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:36,935 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 06:18:36,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:36,936 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:36,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1009363441] [2022-01-10 06:18:36,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1009363441] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:36,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:36,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:36,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404273736] [2022-01-10 06:18:36,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:36,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:36,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:36,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:36,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:36,938 INFO L87 Difference]: Start difference. First operand 552 states and 913 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:18:36,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:36,982 INFO L93 Difference]: Finished difference Result 1086 states and 1806 transitions. [2022-01-10 06:18:36,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:36,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 110 [2022-01-10 06:18:36,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:36,987 INFO L225 Difference]: With dead ends: 1086 [2022-01-10 06:18:36,987 INFO L226 Difference]: Without dead ends: 552 [2022-01-10 06:18:36,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 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 06:18:36,991 INFO L933 BasicCegarLoop]: 904 mSDtfsCounter, 6 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2707 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:36,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 2707 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:18:36,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2022-01-10 06:18:37,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2022-01-10 06:18:37,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 435 states have (on average 1.6804597701149426) internal successors, (731), 454 states have internal predecessors, (731), 93 states have call successors, (93), 24 states have call predecessors, (93), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2022-01-10 06:18:37,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 912 transitions. [2022-01-10 06:18:37,010 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 912 transitions. Word has length 110 [2022-01-10 06:18:37,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:37,010 INFO L470 AbstractCegarLoop]: Abstraction has 552 states and 912 transitions. [2022-01-10 06:18:37,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:18:37,010 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 912 transitions. [2022-01-10 06:18:37,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 06:18:37,013 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:37,013 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:37,030 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 06:18:37,227 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 06:18:37,227 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:37,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:37,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1686269851, now seen corresponding path program 1 times [2022-01-10 06:18:37,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:37,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1790970495] [2022-01-10 06:18:37,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:37,229 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:37,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:37,230 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 06:18:37,232 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 06:18:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:37,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:18:37,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:37,686 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 06:18:37,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:37,686 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:37,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1790970495] [2022-01-10 06:18:37,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1790970495] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:37,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:37,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:18:37,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727741805] [2022-01-10 06:18:37,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:37,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:18:37,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:37,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:18:37,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:18:37,689 INFO L87 Difference]: Start difference. First operand 552 states and 912 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:18:37,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:37,807 INFO L93 Difference]: Finished difference Result 1052 states and 1738 transitions. [2022-01-10 06:18:37,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:18:37,808 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 111 [2022-01-10 06:18:37,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:37,815 INFO L225 Difference]: With dead ends: 1052 [2022-01-10 06:18:37,815 INFO L226 Difference]: Without dead ends: 567 [2022-01-10 06:18:37,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:18:37,840 INFO L933 BasicCegarLoop]: 901 mSDtfsCounter, 117 mSDsluCounter, 4413 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 5314 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:37,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 5314 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:18:37,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-01-10 06:18:37,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 565. [2022-01-10 06:18:37,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 445 states have (on average 1.6764044943820224) internal successors, (746), 466 states have internal predecessors, (746), 94 states have call successors, (94), 24 states have call predecessors, (94), 25 states have return successors, (91), 87 states have call predecessors, (91), 89 states have call successors, (91) [2022-01-10 06:18:37,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 931 transitions. [2022-01-10 06:18:37,862 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 931 transitions. Word has length 111 [2022-01-10 06:18:37,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:37,862 INFO L470 AbstractCegarLoop]: Abstraction has 565 states and 931 transitions. [2022-01-10 06:18:37,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:18:37,862 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 931 transitions. [2022-01-10 06:18:37,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 06:18:37,866 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:37,866 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:37,890 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 06:18:38,082 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 06:18:38,083 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:38,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:38,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1799209988, now seen corresponding path program 1 times [2022-01-10 06:18:38,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:38,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813803579] [2022-01-10 06:18:38,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:38,084 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:38,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:38,085 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 06:18:38,086 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 06:18:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:38,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:38,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:38,532 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 06:18:38,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:38,532 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:38,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813803579] [2022-01-10 06:18:38,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [813803579] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:38,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:38,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:38,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119323849] [2022-01-10 06:18:38,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:38,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:38,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:38,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:38,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:38,534 INFO L87 Difference]: Start difference. First operand 565 states and 931 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:18:38,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:38,576 INFO L93 Difference]: Finished difference Result 1104 states and 1832 transitions. [2022-01-10 06:18:38,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:38,577 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2022-01-10 06:18:38,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:38,581 INFO L225 Difference]: With dead ends: 1104 [2022-01-10 06:18:38,581 INFO L226 Difference]: Without dead ends: 546 [2022-01-10 06:18:38,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 108 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 06:18:38,584 INFO L933 BasicCegarLoop]: 905 mSDtfsCounter, 3 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2708 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:38,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2708 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:18:38,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-01-10 06:18:38,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 546. [2022-01-10 06:18:38,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 429 states have (on average 1.6713286713286712) internal successors, (717), 448 states have internal predecessors, (717), 93 states have call successors, (93), 24 states have call predecessors, (93), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2022-01-10 06:18:38,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 898 transitions. [2022-01-10 06:18:38,601 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 898 transitions. Word has length 111 [2022-01-10 06:18:38,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:38,601 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 898 transitions. [2022-01-10 06:18:38,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:18:38,602 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 898 transitions. [2022-01-10 06:18:38,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 06:18:38,605 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:38,605 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:38,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 06:18:38,818 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 06:18:38,819 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:38,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:38,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1288531394, now seen corresponding path program 1 times [2022-01-10 06:18:38,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:38,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [919768218] [2022-01-10 06:18:38,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:38,820 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:38,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:38,821 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 06:18:38,823 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 06:18:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:39,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:39,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:39,270 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 06:18:39,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:39,270 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:39,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [919768218] [2022-01-10 06:18:39,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [919768218] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:39,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:39,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:39,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553459260] [2022-01-10 06:18:39,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:39,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:39,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:39,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:39,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:39,278 INFO L87 Difference]: Start difference. First operand 546 states and 898 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:18:39,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:39,384 INFO L93 Difference]: Finished difference Result 1040 states and 1716 transitions. [2022-01-10 06:18:39,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:39,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 112 [2022-01-10 06:18:39,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:39,388 INFO L225 Difference]: With dead ends: 1040 [2022-01-10 06:18:39,389 INFO L226 Difference]: Without dead ends: 546 [2022-01-10 06:18:39,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 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 06:18:39,392 INFO L933 BasicCegarLoop]: 849 mSDtfsCounter, 90 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 2521 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:39,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 2521 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:18:39,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-01-10 06:18:39,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 546. [2022-01-10 06:18:39,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 429 states have (on average 1.662004662004662) internal successors, (713), 448 states have internal predecessors, (713), 93 states have call successors, (93), 24 states have call predecessors, (93), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2022-01-10 06:18:39,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 894 transitions. [2022-01-10 06:18:39,409 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 894 transitions. Word has length 112 [2022-01-10 06:18:39,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:39,409 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 894 transitions. [2022-01-10 06:18:39,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:18:39,409 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 894 transitions. [2022-01-10 06:18:39,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 06:18:39,413 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:39,413 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:39,429 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 06:18:39,627 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 06:18:39,627 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:39,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:39,627 INFO L85 PathProgramCache]: Analyzing trace with hash -82548696, now seen corresponding path program 1 times [2022-01-10 06:18:39,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:39,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734916807] [2022-01-10 06:18:39,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:39,628 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:39,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:39,629 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 06:18:39,630 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 06:18:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:39,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:39,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:40,085 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 06:18:40,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:40,086 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:40,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1734916807] [2022-01-10 06:18:40,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1734916807] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:40,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:40,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:40,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068403267] [2022-01-10 06:18:40,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:40,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:40,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:40,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:40,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:40,087 INFO L87 Difference]: Start difference. First operand 546 states and 894 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:18:40,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:40,193 INFO L93 Difference]: Finished difference Result 1040 states and 1712 transitions. [2022-01-10 06:18:40,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:40,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 113 [2022-01-10 06:18:40,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:40,197 INFO L225 Difference]: With dead ends: 1040 [2022-01-10 06:18:40,197 INFO L226 Difference]: Without dead ends: 546 [2022-01-10 06:18:40,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 110 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 06:18:40,200 INFO L933 BasicCegarLoop]: 849 mSDtfsCounter, 85 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 2521 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:40,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 2521 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:18:40,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-01-10 06:18:40,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 546. [2022-01-10 06:18:40,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 429 states have (on average 1.6526806526806528) internal successors, (709), 448 states have internal predecessors, (709), 93 states have call successors, (93), 24 states have call predecessors, (93), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2022-01-10 06:18:40,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 890 transitions. [2022-01-10 06:18:40,218 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 890 transitions. Word has length 113 [2022-01-10 06:18:40,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:40,219 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 890 transitions. [2022-01-10 06:18:40,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:18:40,219 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 890 transitions. [2022-01-10 06:18:40,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 06:18:40,222 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:40,222 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:40,239 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 06:18:40,439 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 06:18:40,440 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:40,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:40,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1045434567, now seen corresponding path program 1 times [2022-01-10 06:18:40,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:40,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229847400] [2022-01-10 06:18:40,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:40,441 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:40,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:40,442 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 06:18:40,444 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 06:18:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:40,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:40,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:40,898 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 06:18:40,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:40,899 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:40,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229847400] [2022-01-10 06:18:40,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229847400] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:40,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:40,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:40,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867376594] [2022-01-10 06:18:40,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:40,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:40,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:40,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:40,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:40,901 INFO L87 Difference]: Start difference. First operand 546 states and 890 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:18:41,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:41,000 INFO L93 Difference]: Finished difference Result 1040 states and 1708 transitions. [2022-01-10 06:18:41,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:41,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2022-01-10 06:18:41,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:41,004 INFO L225 Difference]: With dead ends: 1040 [2022-01-10 06:18:41,005 INFO L226 Difference]: Without dead ends: 546 [2022-01-10 06:18:41,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 111 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 06:18:41,009 INFO L933 BasicCegarLoop]: 849 mSDtfsCounter, 80 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 2521 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:41,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 2521 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:18:41,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-01-10 06:18:41,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 546. [2022-01-10 06:18:41,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 429 states have (on average 1.6433566433566433) internal successors, (705), 448 states have internal predecessors, (705), 93 states have call successors, (93), 24 states have call predecessors, (93), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2022-01-10 06:18:41,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 886 transitions. [2022-01-10 06:18:41,027 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 886 transitions. Word has length 114 [2022-01-10 06:18:41,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:41,027 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 886 transitions. [2022-01-10 06:18:41,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:18:41,028 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 886 transitions. [2022-01-10 06:18:41,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 06:18:41,032 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:41,032 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:41,047 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 06:18:41,247 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 06:18:41,247 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:41,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:41,248 INFO L85 PathProgramCache]: Analyzing trace with hash 2040769863, now seen corresponding path program 1 times [2022-01-10 06:18:41,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:41,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [959789715] [2022-01-10 06:18:41,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:41,249 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:41,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:41,250 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 06:18:41,252 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 06:18:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:41,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:18:41,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:41,675 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 06:18:41,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:41,675 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:41,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [959789715] [2022-01-10 06:18:41,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [959789715] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:41,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:41,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:18:41,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274282994] [2022-01-10 06:18:41,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:41,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:18:41,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:41,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:18:41,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:18:41,677 INFO L87 Difference]: Start difference. First operand 546 states and 886 transitions. Second operand has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:18:41,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:41,757 INFO L93 Difference]: Finished difference Result 1040 states and 1704 transitions. [2022-01-10 06:18:41,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:18:41,759 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2022-01-10 06:18:41,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:41,763 INFO L225 Difference]: With dead ends: 1040 [2022-01-10 06:18:41,763 INFO L226 Difference]: Without dead ends: 525 [2022-01-10 06:18:41,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:18:41,766 INFO L933 BasicCegarLoop]: 874 mSDtfsCounter, 110 mSDsluCounter, 4286 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 5160 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:41,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 5160 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:18:41,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-01-10 06:18:41,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 525. [2022-01-10 06:18:41,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 408 states have (on average 1.6446078431372548) internal successors, (671), 427 states have internal predecessors, (671), 93 states have call successors, (93), 24 states have call predecessors, (93), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2022-01-10 06:18:41,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 852 transitions. [2022-01-10 06:18:41,784 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 852 transitions. Word has length 114 [2022-01-10 06:18:41,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:41,785 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 852 transitions. [2022-01-10 06:18:41,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:18:41,785 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 852 transitions. [2022-01-10 06:18:41,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 06:18:41,788 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:41,788 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:41,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 06:18:42,002 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 06:18:42,003 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:42,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:42,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1959996851, now seen corresponding path program 1 times [2022-01-10 06:18:42,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:42,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489409414] [2022-01-10 06:18:42,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:42,003 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:42,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:42,004 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 06:18:42,005 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 06:18:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:42,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:42,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:42,471 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 06:18:42,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:42,472 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:42,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489409414] [2022-01-10 06:18:42,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489409414] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:42,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:42,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:42,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100471768] [2022-01-10 06:18:42,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:42,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:42,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:42,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:42,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:42,474 INFO L87 Difference]: Start difference. First operand 525 states and 852 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:18:42,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:42,526 INFO L93 Difference]: Finished difference Result 1019 states and 1670 transitions. [2022-01-10 06:18:42,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:42,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 115 [2022-01-10 06:18:42,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:42,532 INFO L225 Difference]: With dead ends: 1019 [2022-01-10 06:18:42,532 INFO L226 Difference]: Without dead ends: 525 [2022-01-10 06:18:42,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 112 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 06:18:42,535 INFO L933 BasicCegarLoop]: 842 mSDtfsCounter, 41 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 2507 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:42,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 2507 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:18:42,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-01-10 06:18:42,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 525. [2022-01-10 06:18:42,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 408 states have (on average 1.642156862745098) internal successors, (670), 427 states have internal predecessors, (670), 93 states have call successors, (93), 24 states have call predecessors, (93), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2022-01-10 06:18:42,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 851 transitions. [2022-01-10 06:18:42,550 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 851 transitions. Word has length 115 [2022-01-10 06:18:42,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:42,550 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 851 transitions. [2022-01-10 06:18:42,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:18:42,550 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 851 transitions. [2022-01-10 06:18:42,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-10 06:18:42,553 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:42,553 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:42,567 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 06:18:42,767 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 06:18:42,767 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:42,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:42,768 INFO L85 PathProgramCache]: Analyzing trace with hash 42702796, now seen corresponding path program 1 times [2022-01-10 06:18:42,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:42,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197137657] [2022-01-10 06:18:42,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:42,768 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:42,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:42,770 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 06:18:42,772 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 06:18:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:43,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:43,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:43,206 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 06:18:43,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:43,206 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:43,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1197137657] [2022-01-10 06:18:43,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1197137657] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:43,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:43,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:43,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354650271] [2022-01-10 06:18:43,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:43,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:43,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:43,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:43,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:43,208 INFO L87 Difference]: Start difference. First operand 525 states and 851 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:18:43,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:43,254 INFO L93 Difference]: Finished difference Result 1019 states and 1669 transitions. [2022-01-10 06:18:43,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:43,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 116 [2022-01-10 06:18:43,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:43,259 INFO L225 Difference]: With dead ends: 1019 [2022-01-10 06:18:43,259 INFO L226 Difference]: Without dead ends: 525 [2022-01-10 06:18:43,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 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 06:18:43,262 INFO L933 BasicCegarLoop]: 842 mSDtfsCounter, 39 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2507 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:43,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 2507 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:18:43,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-01-10 06:18:43,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 525. [2022-01-10 06:18:43,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 408 states have (on average 1.6397058823529411) internal successors, (669), 427 states have internal predecessors, (669), 93 states have call successors, (93), 24 states have call predecessors, (93), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2022-01-10 06:18:43,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 850 transitions. [2022-01-10 06:18:43,278 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 850 transitions. Word has length 116 [2022-01-10 06:18:43,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:43,278 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 850 transitions. [2022-01-10 06:18:43,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:18:43,279 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 850 transitions. [2022-01-10 06:18:43,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-10 06:18:43,281 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:43,282 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:43,302 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 06:18:43,495 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 06:18:43,496 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:43,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:43,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1616324494, now seen corresponding path program 1 times [2022-01-10 06:18:43,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:43,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1246112669] [2022-01-10 06:18:43,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:43,497 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:43,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:43,498 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 06:18:43,498 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 06:18:43,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:43,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 06:18:43,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:43,909 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 06:18:43,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:43,910 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:43,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1246112669] [2022-01-10 06:18:43,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1246112669] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:43,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:43,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:18:43,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630784539] [2022-01-10 06:18:43,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:43,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:18:43,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:43,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:18:43,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:18:43,911 INFO L87 Difference]: Start difference. First operand 525 states and 850 transitions. Second operand has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:18:44,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:44,012 INFO L93 Difference]: Finished difference Result 1013 states and 1657 transitions. [2022-01-10 06:18:44,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 06:18:44,012 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 117 [2022-01-10 06:18:44,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:44,015 INFO L225 Difference]: With dead ends: 1013 [2022-01-10 06:18:44,016 INFO L226 Difference]: Without dead ends: 525 [2022-01-10 06:18:44,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-10 06:18:44,018 INFO L933 BasicCegarLoop]: 835 mSDtfsCounter, 31 mSDsluCounter, 4988 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 5823 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:44,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 5823 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:18:44,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-01-10 06:18:44,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 525. [2022-01-10 06:18:44,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 408 states have (on average 1.6372549019607843) internal successors, (668), 427 states have internal predecessors, (668), 93 states have call successors, (93), 24 states have call predecessors, (93), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2022-01-10 06:18:44,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 849 transitions. [2022-01-10 06:18:44,031 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 849 transitions. Word has length 117 [2022-01-10 06:18:44,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:44,032 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 849 transitions. [2022-01-10 06:18:44,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:18:44,032 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 849 transitions. [2022-01-10 06:18:44,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-10 06:18:44,035 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:44,035 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:44,051 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 06:18:44,248 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 06:18:44,248 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:44,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:44,249 INFO L85 PathProgramCache]: Analyzing trace with hash 2079240097, now seen corresponding path program 1 times [2022-01-10 06:18:44,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:44,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1448552091] [2022-01-10 06:18:44,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:44,249 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:44,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:44,251 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 06:18:44,252 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 06:18:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:44,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:18:44,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:44,724 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 06:18:44,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:44,724 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:44,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1448552091] [2022-01-10 06:18:44,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1448552091] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:44,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:44,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:44,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747708382] [2022-01-10 06:18:44,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:44,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:18:44,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:44,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:18:44,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:18:44,756 INFO L87 Difference]: Start difference. First operand 525 states and 849 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:18:45,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:45,386 INFO L93 Difference]: Finished difference Result 1009 states and 1674 transitions. [2022-01-10 06:18:45,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:18:45,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 118 [2022-01-10 06:18:45,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:45,392 INFO L225 Difference]: With dead ends: 1009 [2022-01-10 06:18:45,392 INFO L226 Difference]: Without dead ends: 529 [2022-01-10 06:18:45,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:18:45,395 INFO L933 BasicCegarLoop]: 819 mSDtfsCounter, 788 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 2124 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:45,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [806 Valid, 2124 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 06:18:45,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2022-01-10 06:18:45,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 529. [2022-01-10 06:18:45,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 411 states have (on average 1.632603406326034) internal successors, (671), 430 states have internal predecessors, (671), 93 states have call successors, (93), 25 states have call predecessors, (93), 24 states have return successors, (89), 86 states have call predecessors, (89), 88 states have call successors, (89) [2022-01-10 06:18:45,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 853 transitions. [2022-01-10 06:18:45,414 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 853 transitions. Word has length 118 [2022-01-10 06:18:45,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:45,414 INFO L470 AbstractCegarLoop]: Abstraction has 529 states and 853 transitions. [2022-01-10 06:18:45,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:18:45,414 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 853 transitions. [2022-01-10 06:18:45,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-10 06:18:45,417 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:45,417 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:45,431 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 06:18:45,631 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 06:18:45,631 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:45,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:45,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1280737071, now seen corresponding path program 1 times [2022-01-10 06:18:45,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:45,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051458386] [2022-01-10 06:18:45,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:45,632 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:45,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:45,633 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 06:18:45,634 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 06:18:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:45,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:18:45,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:46,072 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 06:18:46,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:46,073 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:46,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051458386] [2022-01-10 06:18:46,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2051458386] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:46,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:46,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:46,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351083486] [2022-01-10 06:18:46,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:46,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:18:46,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:46,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:18:46,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:18:46,074 INFO L87 Difference]: Start difference. First operand 529 states and 853 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:18:46,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:46,683 INFO L93 Difference]: Finished difference Result 1018 states and 1681 transitions. [2022-01-10 06:18:46,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:18:46,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 120 [2022-01-10 06:18:46,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:46,687 INFO L225 Difference]: With dead ends: 1018 [2022-01-10 06:18:46,687 INFO L226 Difference]: Without dead ends: 534 [2022-01-10 06:18:46,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:18:46,690 INFO L933 BasicCegarLoop]: 820 mSDtfsCounter, 785 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 2125 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:46,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [802 Valid, 2125 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 06:18:46,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-01-10 06:18:46,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 534. [2022-01-10 06:18:46,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 415 states have (on average 1.6265060240963856) internal successors, (675), 434 states have internal predecessors, (675), 93 states have call successors, (93), 26 states have call predecessors, (93), 25 states have return successors, (90), 86 states have call predecessors, (90), 88 states have call successors, (90) [2022-01-10 06:18:46,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 858 transitions. [2022-01-10 06:18:46,706 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 858 transitions. Word has length 120 [2022-01-10 06:18:46,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:46,706 INFO L470 AbstractCegarLoop]: Abstraction has 534 states and 858 transitions. [2022-01-10 06:18:46,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:18:46,706 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 858 transitions. [2022-01-10 06:18:46,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 06:18:46,709 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:46,709 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:46,723 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 06:18:46,923 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 06:18:46,923 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:46,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:46,924 INFO L85 PathProgramCache]: Analyzing trace with hash -316300383, now seen corresponding path program 1 times [2022-01-10 06:18:46,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:46,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141284356] [2022-01-10 06:18:46,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:46,924 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:46,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:46,925 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 06:18:46,927 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 06:18:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:47,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:18:47,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:47,430 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 06:18:47,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:47,430 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:47,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141284356] [2022-01-10 06:18:47,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141284356] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:47,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:47,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:47,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933262287] [2022-01-10 06:18:47,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:47,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:18:47,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:47,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:18:47,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:18:47,432 INFO L87 Difference]: Start difference. First operand 534 states and 858 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:18:48,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:48,045 INFO L93 Difference]: Finished difference Result 1029 states and 1690 transitions. [2022-01-10 06:18:48,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:18:48,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 122 [2022-01-10 06:18:48,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:48,049 INFO L225 Difference]: With dead ends: 1029 [2022-01-10 06:18:48,049 INFO L226 Difference]: Without dead ends: 540 [2022-01-10 06:18:48,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:18:48,052 INFO L933 BasicCegarLoop]: 820 mSDtfsCounter, 786 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 2125 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:48,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [803 Valid, 2125 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 06:18:48,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-01-10 06:18:48,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 540. [2022-01-10 06:18:48,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 420 states have (on average 1.619047619047619) internal successors, (680), 439 states have internal predecessors, (680), 93 states have call successors, (93), 27 states have call predecessors, (93), 26 states have return successors, (91), 86 states have call predecessors, (91), 88 states have call successors, (91) [2022-01-10 06:18:48,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 864 transitions. [2022-01-10 06:18:48,066 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 864 transitions. Word has length 122 [2022-01-10 06:18:48,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:48,066 INFO L470 AbstractCegarLoop]: Abstraction has 540 states and 864 transitions. [2022-01-10 06:18:48,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:18:48,066 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 864 transitions. [2022-01-10 06:18:48,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 06:18:48,069 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:48,069 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:48,086 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 06:18:48,286 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 06:18:48,286 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:48,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:48,287 INFO L85 PathProgramCache]: Analyzing trace with hash 492353319, now seen corresponding path program 1 times [2022-01-10 06:18:48,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:48,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364961820] [2022-01-10 06:18:48,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:48,287 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:48,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:48,288 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 06:18:48,290 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 06:18:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:48,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:18:48,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:48,731 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 06:18:48,732 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:48,732 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:48,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364961820] [2022-01-10 06:18:48,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364961820] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:48,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:48,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:48,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193570494] [2022-01-10 06:18:48,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:48,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:18:48,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:48,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:18:48,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:18:48,739 INFO L87 Difference]: Start difference. First operand 540 states and 864 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:18:49,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:49,233 INFO L93 Difference]: Finished difference Result 1042 states and 1701 transitions. [2022-01-10 06:18:49,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:18:49,234 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 124 [2022-01-10 06:18:49,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:49,236 INFO L225 Difference]: With dead ends: 1042 [2022-01-10 06:18:49,236 INFO L226 Difference]: Without dead ends: 547 [2022-01-10 06:18:49,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:18:49,239 INFO L933 BasicCegarLoop]: 820 mSDtfsCounter, 790 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 2125 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:49,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [807 Valid, 2125 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 06:18:49,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2022-01-10 06:18:49,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 547. [2022-01-10 06:18:49,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 426 states have (on average 1.6103286384976525) internal successors, (686), 445 states have internal predecessors, (686), 93 states have call successors, (93), 28 states have call predecessors, (93), 27 states have return successors, (92), 86 states have call predecessors, (92), 88 states have call successors, (92) [2022-01-10 06:18:49,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 871 transitions. [2022-01-10 06:18:49,253 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 871 transitions. Word has length 124 [2022-01-10 06:18:49,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:49,253 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 871 transitions. [2022-01-10 06:18:49,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:18:49,254 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 871 transitions. [2022-01-10 06:18:49,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 06:18:49,256 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:49,257 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:49,271 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 06:18:49,471 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 06:18:49,471 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:49,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:49,472 INFO L85 PathProgramCache]: Analyzing trace with hash -547691103, now seen corresponding path program 1 times [2022-01-10 06:18:49,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:49,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982704760] [2022-01-10 06:18:49,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:49,473 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:49,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:49,474 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 06:18:49,475 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 06:18:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:49,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 06:18:49,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:50,081 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 06:18:50,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:18:50,785 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-10 06:18:50,786 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:50,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982704760] [2022-01-10 06:18:50,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1982704760] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:18:50,786 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:18:50,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2022-01-10 06:18:50,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747838422] [2022-01-10 06:18:50,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:18:50,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 06:18:50,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:50,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 06:18:50,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-01-10 06:18:50,787 INFO L87 Difference]: Start difference. First operand 547 states and 871 transitions. Second operand has 18 states, 18 states have (on average 8.833333333333334) internal successors, (159), 14 states have internal predecessors, (159), 8 states have call successors, (27), 5 states have call predecessors, (27), 10 states have return successors, (28), 12 states have call predecessors, (28), 7 states have call successors, (28) [2022-01-10 06:18:58,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:58,729 INFO L93 Difference]: Finished difference Result 1802 states and 2954 transitions. [2022-01-10 06:18:58,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 06:18:58,729 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.833333333333334) internal successors, (159), 14 states have internal predecessors, (159), 8 states have call successors, (27), 5 states have call predecessors, (27), 10 states have return successors, (28), 12 states have call predecessors, (28), 7 states have call successors, (28) Word has length 126 [2022-01-10 06:18:58,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:58,735 INFO L225 Difference]: With dead ends: 1802 [2022-01-10 06:18:58,736 INFO L226 Difference]: Without dead ends: 1300 [2022-01-10 06:18:58,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=694, Unknown=0, NotChecked=0, Total=870 [2022-01-10 06:18:58,739 INFO L933 BasicCegarLoop]: 1677 mSDtfsCounter, 5292 mSDsluCounter, 5307 mSDsCounter, 0 mSdLazyCounter, 10422 mSolverCounterSat, 1936 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5367 SdHoareTripleChecker+Valid, 6984 SdHoareTripleChecker+Invalid, 12358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1936 IncrementalHoareTripleChecker+Valid, 10422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:58,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5367 Valid, 6984 Invalid, 12358 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1936 Valid, 10422 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-01-10 06:18:58,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2022-01-10 06:18:58,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1156. [2022-01-10 06:18:58,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 883 states have (on average 1.6160815402038504) internal successors, (1427), 923 states have internal predecessors, (1427), 214 states have call successors, (214), 52 states have call predecessors, (214), 58 states have return successors, (236), 211 states have call predecessors, (236), 209 states have call successors, (236) [2022-01-10 06:18:58,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1877 transitions. [2022-01-10 06:18:58,786 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1877 transitions. Word has length 126 [2022-01-10 06:18:58,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:58,787 INFO L470 AbstractCegarLoop]: Abstraction has 1156 states and 1877 transitions. [2022-01-10 06:18:58,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.833333333333334) internal successors, (159), 14 states have internal predecessors, (159), 8 states have call successors, (27), 5 states have call predecessors, (27), 10 states have return successors, (28), 12 states have call predecessors, (28), 7 states have call successors, (28) [2022-01-10 06:18:58,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1877 transitions. [2022-01-10 06:18:58,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-10 06:18:58,792 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:58,792 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:58,807 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 06:18:59,006 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 06:18:59,006 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:59,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:59,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1646662683, now seen corresponding path program 1 times [2022-01-10 06:18:59,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:59,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709554047] [2022-01-10 06:18:59,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:59,007 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:59,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:59,008 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 06:18:59,009 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 06:18:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:59,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 06:18:59,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:59,467 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 06:18:59,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:59,468 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:59,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [709554047] [2022-01-10 06:18:59,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [709554047] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:59,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:59,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:18:59,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547946674] [2022-01-10 06:18:59,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:59,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:18:59,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:59,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:18:59,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:18:59,470 INFO L87 Difference]: Start difference. First operand 1156 states and 1877 transitions. Second operand has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:18:59,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:59,604 INFO L93 Difference]: Finished difference Result 1661 states and 2697 transitions. [2022-01-10 06:18:59,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 06:18:59,604 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 129 [2022-01-10 06:18:59,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:59,608 INFO L225 Difference]: With dead ends: 1661 [2022-01-10 06:18:59,608 INFO L226 Difference]: Without dead ends: 539 [2022-01-10 06:18:59,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-10 06:18:59,613 INFO L933 BasicCegarLoop]: 828 mSDtfsCounter, 27 mSDsluCounter, 4940 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 5768 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:59,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 5768 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:18:59,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2022-01-10 06:18:59,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2022-01-10 06:18:59,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 420 states have (on average 1.6047619047619048) internal successors, (674), 439 states have internal predecessors, (674), 91 states have call successors, (91), 28 states have call predecessors, (91), 27 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2022-01-10 06:18:59,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 855 transitions. [2022-01-10 06:18:59,634 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 855 transitions. Word has length 129 [2022-01-10 06:18:59,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:59,634 INFO L470 AbstractCegarLoop]: Abstraction has 539 states and 855 transitions. [2022-01-10 06:18:59,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:18:59,634 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 855 transitions. [2022-01-10 06:18:59,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 06:18:59,637 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:59,637 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:18:59,655 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 06:18:59,852 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 06:18:59,852 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:59,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:59,853 INFO L85 PathProgramCache]: Analyzing trace with hash -25419828, now seen corresponding path program 1 times [2022-01-10 06:18:59,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:59,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002963797] [2022-01-10 06:18:59,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:59,853 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:59,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:59,855 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:18:59,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 06:19:00,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:00,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 06:19:00,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:00,403 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 06:19:00,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:19:01,023 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 06:19:01,024 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:01,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002963797] [2022-01-10 06:19:01,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002963797] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:19:01,024 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:19:01,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-01-10 06:19:01,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007267483] [2022-01-10 06:19:01,024 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:19:01,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 06:19:01,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:01,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 06:19:01,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-01-10 06:19:01,026 INFO L87 Difference]: Start difference. First operand 539 states and 855 transitions. Second operand has 14 states, 14 states have (on average 11.357142857142858) internal successors, (159), 12 states have internal predecessors, (159), 8 states have call successors, (28), 5 states have call predecessors, (28), 8 states have return successors, (28), 10 states have call predecessors, (28), 7 states have call successors, (28) [2022-01-10 06:19:03,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:03,187 INFO L93 Difference]: Finished difference Result 1042 states and 1680 transitions. [2022-01-10 06:19:03,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:19:03,189 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.357142857142858) internal successors, (159), 12 states have internal predecessors, (159), 8 states have call successors, (28), 5 states have call predecessors, (28), 8 states have return successors, (28), 10 states have call predecessors, (28), 7 states have call successors, (28) Word has length 132 [2022-01-10 06:19:03,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:03,192 INFO L225 Difference]: With dead ends: 1042 [2022-01-10 06:19:03,192 INFO L226 Difference]: Without dead ends: 545 [2022-01-10 06:19:03,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-01-10 06:19:03,195 INFO L933 BasicCegarLoop]: 744 mSDtfsCounter, 1927 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 3447 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1927 SdHoareTripleChecker+Valid, 2401 SdHoareTripleChecker+Invalid, 3970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 3447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:19:03,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1927 Valid, 2401 Invalid, 3970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [523 Valid, 3447 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 06:19:03,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-01-10 06:19:03,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 543. [2022-01-10 06:19:03,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 423 states have (on average 1.6004728132387707) internal successors, (677), 442 states have internal predecessors, (677), 91 states have call successors, (91), 28 states have call predecessors, (91), 28 states have return successors, (95), 85 states have call predecessors, (95), 86 states have call successors, (95) [2022-01-10 06:19:03,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 863 transitions. [2022-01-10 06:19:03,212 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 863 transitions. Word has length 132 [2022-01-10 06:19:03,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:19:03,212 INFO L470 AbstractCegarLoop]: Abstraction has 543 states and 863 transitions. [2022-01-10 06:19:03,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.357142857142858) internal successors, (159), 12 states have internal predecessors, (159), 8 states have call successors, (28), 5 states have call predecessors, (28), 8 states have return successors, (28), 10 states have call predecessors, (28), 7 states have call successors, (28) [2022-01-10 06:19:03,212 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 863 transitions. [2022-01-10 06:19:03,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-10 06:19:03,215 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:03,215 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:19:03,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 06:19:03,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:19:03,429 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:03,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:03,430 INFO L85 PathProgramCache]: Analyzing trace with hash -2125997413, now seen corresponding path program 1 times [2022-01-10 06:19:03,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:03,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364107550] [2022-01-10 06:19:03,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:19:03,430 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:03,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:03,431 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:19:03,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 06:19:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:03,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:19:03,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:03,932 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-10 06:19:03,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:19:04,357 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-10 06:19:04,357 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:04,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364107550] [2022-01-10 06:19:04,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364107550] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:19:04,357 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:19:04,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-01-10 06:19:04,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770977312] [2022-01-10 06:19:04,358 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:19:04,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 06:19:04,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:04,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 06:19:04,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:19:04,359 INFO L87 Difference]: Start difference. First operand 543 states and 863 transitions. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 6 states have call successors, (22), 5 states have call predecessors, (22), 6 states have return successors, (21), 7 states have call predecessors, (21), 5 states have call successors, (21) [2022-01-10 06:19:08,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:08,190 INFO L93 Difference]: Finished difference Result 2018 states and 3284 transitions. [2022-01-10 06:19:08,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 06:19:08,192 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 6 states have call successors, (22), 5 states have call predecessors, (22), 6 states have return successors, (21), 7 states have call predecessors, (21), 5 states have call successors, (21) Word has length 133 [2022-01-10 06:19:08,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:08,200 INFO L225 Difference]: With dead ends: 2018 [2022-01-10 06:19:08,200 INFO L226 Difference]: Without dead ends: 1517 [2022-01-10 06:19:08,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-01-10 06:19:08,203 INFO L933 BasicCegarLoop]: 1333 mSDtfsCounter, 4032 mSDsluCounter, 1999 mSDsCounter, 0 mSdLazyCounter, 4813 mSolverCounterSat, 1124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4104 SdHoareTripleChecker+Valid, 3332 SdHoareTripleChecker+Invalid, 5937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1124 IncrementalHoareTripleChecker+Valid, 4813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-01-10 06:19:08,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4104 Valid, 3332 Invalid, 5937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1124 Valid, 4813 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-01-10 06:19:08,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2022-01-10 06:19:08,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1464. [2022-01-10 06:19:08,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1141 states have (on average 1.6064855390008763) internal successors, (1833), 1187 states have internal predecessors, (1833), 245 states have call successors, (245), 77 states have call predecessors, (245), 77 states have return successors, (273), 236 states have call predecessors, (273), 240 states have call successors, (273) [2022-01-10 06:19:08,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 2351 transitions. [2022-01-10 06:19:08,256 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 2351 transitions. Word has length 133 [2022-01-10 06:19:08,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:19:08,256 INFO L470 AbstractCegarLoop]: Abstraction has 1464 states and 2351 transitions. [2022-01-10 06:19:08,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 6 states have call successors, (22), 5 states have call predecessors, (22), 6 states have return successors, (21), 7 states have call predecessors, (21), 5 states have call successors, (21) [2022-01-10 06:19:08,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 2351 transitions. [2022-01-10 06:19:08,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-10 06:19:08,259 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:08,259 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:19:08,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 06:19:08,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:19:08,473 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:08,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:08,473 INFO L85 PathProgramCache]: Analyzing trace with hash -195472651, now seen corresponding path program 1 times [2022-01-10 06:19:08,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:08,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [843631126] [2022-01-10 06:19:08,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:19:08,473 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:08,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:08,474 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:19:08,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 06:19:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:08,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 792 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 06:19:08,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:09,008 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 06:19:09,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:19:09,008 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:09,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [843631126] [2022-01-10 06:19:09,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [843631126] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:19:09,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:19:09,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:19:09,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970078236] [2022-01-10 06:19:09,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:19:09,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:19:09,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:09,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:19:09,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:19:09,011 INFO L87 Difference]: Start difference. First operand 1464 states and 2351 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 6 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-01-10 06:19:12,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:12,773 INFO L93 Difference]: Finished difference Result 4918 states and 8135 transitions. [2022-01-10 06:19:12,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 06:19:12,774 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 6 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) Word has length 135 [2022-01-10 06:19:12,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:12,795 INFO L225 Difference]: With dead ends: 4918 [2022-01-10 06:19:12,795 INFO L226 Difference]: Without dead ends: 3496 [2022-01-10 06:19:12,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-01-10 06:19:12,805 INFO L933 BasicCegarLoop]: 1538 mSDtfsCounter, 3214 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 4388 mSolverCounterSat, 783 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3335 SdHoareTripleChecker+Valid, 3139 SdHoareTripleChecker+Invalid, 5171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 783 IncrementalHoareTripleChecker+Valid, 4388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-01-10 06:19:12,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3335 Valid, 3139 Invalid, 5171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [783 Valid, 4388 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-01-10 06:19:12,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3496 states. [2022-01-10 06:19:12,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3496 to 3365. [2022-01-10 06:19:12,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3365 states, 2518 states have (on average 1.5996822875297856) internal successors, (4028), 2660 states have internal predecessors, (4028), 684 states have call successors, (684), 149 states have call predecessors, (684), 162 states have return successors, (847), 677 states have call predecessors, (847), 679 states have call successors, (847) [2022-01-10 06:19:12,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3365 states to 3365 states and 5559 transitions. [2022-01-10 06:19:12,963 INFO L78 Accepts]: Start accepts. Automaton has 3365 states and 5559 transitions. Word has length 135 [2022-01-10 06:19:12,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:19:12,964 INFO L470 AbstractCegarLoop]: Abstraction has 3365 states and 5559 transitions. [2022-01-10 06:19:12,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 6 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-01-10 06:19:12,965 INFO L276 IsEmpty]: Start isEmpty. Operand 3365 states and 5559 transitions. [2022-01-10 06:19:12,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-10 06:19:12,967 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:12,967 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:19:13,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 06:19:13,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:19:13,192 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:13,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:13,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1108921078, now seen corresponding path program 1 times [2022-01-10 06:19:13,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:13,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1147230915] [2022-01-10 06:19:13,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:19:13,193 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:13,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:13,194 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:19:13,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 06:19:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:13,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 792 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 06:19:13,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:13,706 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 06:19:13,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:19:13,707 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:13,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1147230915] [2022-01-10 06:19:13,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1147230915] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:19:13,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:19:13,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:19:13,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169508661] [2022-01-10 06:19:13,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:19:13,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:19:13,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:13,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:19:13,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:19:13,708 INFO L87 Difference]: Start difference. First operand 3365 states and 5559 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 6 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2022-01-10 06:19:16,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:16,937 INFO L93 Difference]: Finished difference Result 9231 states and 15285 transitions. [2022-01-10 06:19:16,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 06:19:16,937 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 6 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 135 [2022-01-10 06:19:16,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:16,980 INFO L225 Difference]: With dead ends: 9231 [2022-01-10 06:19:16,980 INFO L226 Difference]: Without dead ends: 6717 [2022-01-10 06:19:16,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-01-10 06:19:16,994 INFO L933 BasicCegarLoop]: 996 mSDtfsCounter, 2916 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 3667 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2981 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 4256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 3667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-10 06:19:16,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2981 Valid, 2552 Invalid, 4256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 3667 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-10 06:19:16,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6717 states. [2022-01-10 06:19:17,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6717 to 6474. [2022-01-10 06:19:17,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6474 states, 4891 states have (on average 1.5933346963811081) internal successors, (7793), 5156 states have internal predecessors, (7793), 1238 states have call successors, (1238), 287 states have call predecessors, (1238), 344 states have return successors, (1636), 1232 states have call predecessors, (1636), 1233 states have call successors, (1636) [2022-01-10 06:19:17,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6474 states to 6474 states and 10667 transitions. [2022-01-10 06:19:17,359 INFO L78 Accepts]: Start accepts. Automaton has 6474 states and 10667 transitions. Word has length 135 [2022-01-10 06:19:17,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:19:17,360 INFO L470 AbstractCegarLoop]: Abstraction has 6474 states and 10667 transitions. [2022-01-10 06:19:17,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 6 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2022-01-10 06:19:17,364 INFO L276 IsEmpty]: Start isEmpty. Operand 6474 states and 10667 transitions. [2022-01-10 06:19:17,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-10 06:19:17,367 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:17,367 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:19:17,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-01-10 06:19:17,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:19:17,584 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:17,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:17,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1220391786, now seen corresponding path program 1 times [2022-01-10 06:19:17,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:17,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1789229935] [2022-01-10 06:19:17,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:19:17,585 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:17,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:17,586 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:19:17,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 06:19:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:17,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 792 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 06:19:17,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:18,130 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 06:19:18,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:19:18,130 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:18,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1789229935] [2022-01-10 06:19:18,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1789229935] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:19:18,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:19:18,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-10 06:19:18,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278966048] [2022-01-10 06:19:18,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:19:18,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 06:19:18,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:18,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 06:19:18,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:19:18,133 INFO L87 Difference]: Start difference. First operand 6474 states and 10667 transitions. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 9 states have internal predecessors, (94), 6 states have call successors, (16), 4 states have call predecessors, (16), 6 states have return successors, (16), 8 states have call predecessors, (16), 5 states have call successors, (16) [2022-01-10 06:19:20,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:20,485 INFO L93 Difference]: Finished difference Result 12045 states and 19893 transitions. [2022-01-10 06:19:20,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 06:19:20,486 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 9 states have internal predecessors, (94), 6 states have call successors, (16), 4 states have call predecessors, (16), 6 states have return successors, (16), 8 states have call predecessors, (16), 5 states have call successors, (16) Word has length 137 [2022-01-10 06:19:20,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:20,521 INFO L225 Difference]: With dead ends: 12045 [2022-01-10 06:19:20,521 INFO L226 Difference]: Without dead ends: 6426 [2022-01-10 06:19:20,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-01-10 06:19:20,539 INFO L933 BasicCegarLoop]: 741 mSDtfsCounter, 1398 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 3837 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 2652 SdHoareTripleChecker+Invalid, 4188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 3837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:19:20,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1398 Valid, 2652 Invalid, 4188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 3837 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-10 06:19:20,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6426 states. [2022-01-10 06:19:20,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6426 to 6426. [2022-01-10 06:19:20,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6426 states, 4865 states have (on average 1.593627954779034) internal successors, (7753), 5126 states have internal predecessors, (7753), 1224 states have call successors, (1224), 283 states have call predecessors, (1224), 336 states have return successors, (1614), 1218 states have call predecessors, (1614), 1219 states have call successors, (1614) [2022-01-10 06:19:20,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6426 states to 6426 states and 10591 transitions. [2022-01-10 06:19:20,859 INFO L78 Accepts]: Start accepts. Automaton has 6426 states and 10591 transitions. Word has length 137 [2022-01-10 06:19:20,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:19:20,861 INFO L470 AbstractCegarLoop]: Abstraction has 6426 states and 10591 transitions. [2022-01-10 06:19:20,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 9 states have internal predecessors, (94), 6 states have call successors, (16), 4 states have call predecessors, (16), 6 states have return successors, (16), 8 states have call predecessors, (16), 5 states have call successors, (16) [2022-01-10 06:19:20,861 INFO L276 IsEmpty]: Start isEmpty. Operand 6426 states and 10591 transitions. [2022-01-10 06:19:20,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-10 06:19:20,863 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:20,863 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:19:20,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-01-10 06:19:21,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:19:21,078 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:21,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:21,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1847758126, now seen corresponding path program 1 times [2022-01-10 06:19:21,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:21,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422274548] [2022-01-10 06:19:21,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:19:21,079 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:21,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:21,081 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:19:21,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-01-10 06:19:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:21,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 06:19:21,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:21,716 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 06:19:21,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:19:21,716 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:21,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1422274548] [2022-01-10 06:19:21,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1422274548] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:19:21,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:19:21,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 06:19:21,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890449706] [2022-01-10 06:19:21,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:19:21,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 06:19:21,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:21,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 06:19:21,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 06:19:21,717 INFO L87 Difference]: Start difference. First operand 6426 states and 10591 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 5 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-01-10 06:19:25,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:25,578 INFO L93 Difference]: Finished difference Result 13088 states and 21445 transitions. [2022-01-10 06:19:25,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 06:19:25,580 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 5 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) Word has length 140 [2022-01-10 06:19:25,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:25,623 INFO L225 Difference]: With dead ends: 13088 [2022-01-10 06:19:25,623 INFO L226 Difference]: Without dead ends: 7491 [2022-01-10 06:19:25,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-01-10 06:19:25,646 INFO L933 BasicCegarLoop]: 910 mSDtfsCounter, 1980 mSDsluCounter, 1946 mSDsCounter, 0 mSdLazyCounter, 4851 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2046 SdHoareTripleChecker+Valid, 2856 SdHoareTripleChecker+Invalid, 5337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 4851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:19:25,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2046 Valid, 2856 Invalid, 5337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 4851 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-01-10 06:19:25,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7491 states. [2022-01-10 06:19:25,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7491 to 7106. [2022-01-10 06:19:25,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7106 states, 5369 states have (on average 1.5628608679456137) internal successors, (8391), 5660 states have internal predecessors, (8391), 1324 states have call successors, (1324), 347 states have call predecessors, (1324), 412 states have return successors, (1792), 1300 states have call predecessors, (1792), 1319 states have call successors, (1792) [2022-01-10 06:19:26,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7106 states to 7106 states and 11507 transitions. [2022-01-10 06:19:26,034 INFO L78 Accepts]: Start accepts. Automaton has 7106 states and 11507 transitions. Word has length 140 [2022-01-10 06:19:26,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:19:26,034 INFO L470 AbstractCegarLoop]: Abstraction has 7106 states and 11507 transitions. [2022-01-10 06:19:26,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 5 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-01-10 06:19:26,035 INFO L276 IsEmpty]: Start isEmpty. Operand 7106 states and 11507 transitions.