/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_spec2_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:15:32,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:15:32,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:15:32,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:15:32,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:15:32,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:15:32,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:15:32,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:15:32,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:15:32,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:15:32,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:15:32,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:15:32,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:15:32,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:15:32,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:15:32,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:15:32,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:15:32,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:15:32,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:15:32,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:15:32,955 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:15:32,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:15:32,966 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:15:32,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:15:32,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:15:32,974 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:15:32,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:15:32,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:15:32,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:15:32,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:15:32,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:15:32,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:15:32,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:15:32,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:15:32,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:15:32,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:15:32,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:15:32,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:15:32,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:15:32,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:15:32,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:15:32,984 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 06:15:33,016 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:15:33,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:15:33,017 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:15:33,017 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:15:33,018 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:15:33,018 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:15:33,019 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:15:33,019 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:15:33,019 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:15:33,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:15:33,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:15:33,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:15:33,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:15:33,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:15:33,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:15:33,020 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:15:33,020 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:15:33,021 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:15:33,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:15:33,021 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:15:33,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:15:33,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:15:33,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:15:33,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:15:33,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:15:33,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:15:33,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:15:33,022 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:15:33,022 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:15:33,022 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:15:33,022 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:15:33,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:15:33,023 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:15:33,023 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:15:33,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:15:33,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:15:33,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:15:33,282 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:15:33,282 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:15:33,283 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product22.cil.c [2022-01-10 06:15:33,353 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c015b64a3/67b2334bed9f436db31c81c260ff0edf/FLAG89792580f [2022-01-10 06:15:33,798 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:15:33,798 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product22.cil.c [2022-01-10 06:15:33,828 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c015b64a3/67b2334bed9f436db31c81c260ff0edf/FLAG89792580f [2022-01-10 06:15:34,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c015b64a3/67b2334bed9f436db31c81c260ff0edf [2022-01-10 06:15:34,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:15:34,122 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:15:34,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:15:34,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:15:34,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:15:34,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:15:34" (1/1) ... [2022-01-10 06:15:34,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@427d7a37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:15:34, skipping insertion in model container [2022-01-10 06:15:34,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:15:34" (1/1) ... [2022-01-10 06:15:34,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:15:34,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:15:34,371 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_spec2_product22.cil.c[1545,1558] [2022-01-10 06:15:34,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:15:34,665 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 06:15:34,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:15:34,691 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_spec2_product22.cil.c[1545,1558] [2022-01-10 06:15:34,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:15:34,777 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:15:34,787 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_spec2_product22.cil.c[1545,1558] [2022-01-10 06:15:34,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:15:34,916 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:15:34,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:15:34 WrapperNode [2022-01-10 06:15:34,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:15:34,918 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:15:34,918 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:15:34,918 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:15:34,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:15:34" (1/1) ... [2022-01-10 06:15:34,960 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:15:34" (1/1) ... [2022-01-10 06:15:35,002 INFO L137 Inliner]: procedures = 96, calls = 345, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 826 [2022-01-10 06:15:35,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:15:35,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:15:35,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:15:35,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:15:35,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:15:34" (1/1) ... [2022-01-10 06:15:35,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:15:34" (1/1) ... [2022-01-10 06:15:35,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:15:34" (1/1) ... [2022-01-10 06:15:35,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:15:34" (1/1) ... [2022-01-10 06:15:35,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:15:34" (1/1) ... [2022-01-10 06:15:35,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:15:34" (1/1) ... [2022-01-10 06:15:35,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:15:34" (1/1) ... [2022-01-10 06:15:35,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:15:35,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:15:35,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:15:35,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:15:35,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:15:34" (1/1) ... [2022-01-10 06:15:35,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:15:35,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:15:35,105 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 06:15:35,112 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 06:15:35,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:15:35,142 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-01-10 06:15:35,143 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-01-10 06:15:35,143 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-01-10 06:15:35,143 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-01-10 06:15:35,143 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-01-10 06:15:35,143 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-01-10 06:15:35,143 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-01-10 06:15:35,143 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-01-10 06:15:35,143 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-01-10 06:15:35,143 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-01-10 06:15:35,143 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-01-10 06:15:35,144 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-01-10 06:15:35,144 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-01-10 06:15:35,144 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-01-10 06:15:35,144 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-01-10 06:15:35,144 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-01-10 06:15:35,144 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-01-10 06:15:35,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-01-10 06:15:35,144 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-01-10 06:15:35,144 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-01-10 06:15:35,144 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-01-10 06:15:35,145 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-01-10 06:15:35,145 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-01-10 06:15:35,145 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-01-10 06:15:35,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:15:35,145 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-01-10 06:15:35,145 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-01-10 06:15:35,145 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-01-10 06:15:35,145 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-01-10 06:15:35,145 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-01-10 06:15:35,145 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-01-10 06:15:35,145 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-01-10 06:15:35,145 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-01-10 06:15:35,146 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-01-10 06:15:35,146 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-01-10 06:15:35,146 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-01-10 06:15:35,146 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-01-10 06:15:35,146 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-01-10 06:15:35,146 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-01-10 06:15:35,146 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-01-10 06:15:35,146 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-01-10 06:15:35,146 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-01-10 06:15:35,146 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-01-10 06:15:35,146 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-01-10 06:15:35,147 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-01-10 06:15:35,147 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2022-01-10 06:15:35,147 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2022-01-10 06:15:35,147 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-01-10 06:15:35,147 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-01-10 06:15:35,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:15:35,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:15:35,147 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-01-10 06:15:35,147 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-01-10 06:15:35,325 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:15:35,327 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:15:36,362 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:15:36,377 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:15:36,378 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 06:15:36,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:15:36 BoogieIcfgContainer [2022-01-10 06:15:36,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:15:36,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:15:36,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:15:36,386 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:15:36,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:15:34" (1/3) ... [2022-01-10 06:15:36,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a72978e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:15:36, skipping insertion in model container [2022-01-10 06:15:36,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:15:34" (2/3) ... [2022-01-10 06:15:36,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a72978e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:15:36, skipping insertion in model container [2022-01-10 06:15:36,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:15:36" (3/3) ... [2022-01-10 06:15:36,389 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product22.cil.c [2022-01-10 06:15:36,394 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:15:36,394 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:15:36,456 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:15:36,462 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 06:15:36,463 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:15:36,506 INFO L276 IsEmpty]: Start isEmpty. Operand has 572 states, 447 states have (on average 1.691275167785235) internal successors, (756), 470 states have internal predecessors, (756), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 91 states have call predecessors, (98), 98 states have call successors, (98) [2022-01-10 06:15:36,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 06:15:36,527 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:15:36,527 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:15:36,528 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:15:36,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:15:36,533 INFO L85 PathProgramCache]: Analyzing trace with hash -992084887, now seen corresponding path program 1 times [2022-01-10 06:15:36,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:15:36,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1925211060] [2022-01-10 06:15:36,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:15:36,547 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:15:36,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:15:36,555 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 06:15:36,571 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 06:15:36,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:15:36,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 06:15:36,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:15:37,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:15:37,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:15:37,122 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:15:37,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1925211060] [2022-01-10 06:15:37,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1925211060] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:15:37,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:15:37,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:15:37,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147238065] [2022-01-10 06:15:37,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:15:37,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 06:15:37,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:15:37,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 06:15:37,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:15:37,150 INFO L87 Difference]: Start difference. First operand has 572 states, 447 states have (on average 1.691275167785235) internal successors, (756), 470 states have internal predecessors, (756), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 91 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 06:15:37,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:15:37,251 INFO L93 Difference]: Finished difference Result 593 states and 982 transitions. [2022-01-10 06:15:37,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 06:15:37,258 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 60 [2022-01-10 06:15:37,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:15:37,277 INFO L225 Difference]: With dead ends: 593 [2022-01-10 06:15:37,278 INFO L226 Difference]: Without dead ends: 564 [2022-01-10 06:15:37,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 59 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 06:15:37,284 INFO L933 BasicCegarLoop]: 943 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, 943 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 06:15:37,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:15:37,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-01-10 06:15:37,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2022-01-10 06:15:37,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 441 states have (on average 1.689342403628118) internal successors, (745), 462 states have internal predecessors, (745), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-01-10 06:15:37,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 936 transitions. [2022-01-10 06:15:37,385 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 936 transitions. Word has length 60 [2022-01-10 06:15:37,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:15:37,386 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 936 transitions. [2022-01-10 06:15:37,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 06:15:37,387 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 936 transitions. [2022-01-10 06:15:37,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 06:15:37,391 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:15:37,391 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:15:37,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 06:15:37,610 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 06:15:37,611 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:15:37,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:15:37,612 INFO L85 PathProgramCache]: Analyzing trace with hash 180859229, now seen corresponding path program 1 times [2022-01-10 06:15:37,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:15:37,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [805810210] [2022-01-10 06:15:37,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:15:37,613 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:15:37,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:15:37,614 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 06:15:37,616 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 06:15:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:15:37,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:15:37,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:15:37,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:15:37,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:15:37,981 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:15:37,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [805810210] [2022-01-10 06:15:37,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [805810210] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:15:37,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:15:37,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:15:37,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464615210] [2022-01-10 06:15:37,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:15:37,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:15:37,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:15:37,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:15:37,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:15:37,989 INFO L87 Difference]: Start difference. First operand 564 states and 936 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:15:38,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:15:38,101 INFO L93 Difference]: Finished difference Result 1110 states and 1848 transitions. [2022-01-10 06:15:38,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:15:38,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2022-01-10 06:15:38,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:15:38,114 INFO L225 Difference]: With dead ends: 1110 [2022-01-10 06:15:38,114 INFO L226 Difference]: Without dead ends: 564 [2022-01-10 06:15:38,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 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 06:15:38,120 INFO L933 BasicCegarLoop]: 923 mSDtfsCounter, 14 mSDsluCounter, 1841 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2764 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 06:15:38,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 2764 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:15:38,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-01-10 06:15:38,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2022-01-10 06:15:38,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 441 states have (on average 1.6870748299319729) internal successors, (744), 462 states have internal predecessors, (744), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-01-10 06:15:38,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 935 transitions. [2022-01-10 06:15:38,164 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 935 transitions. Word has length 62 [2022-01-10 06:15:38,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:15:38,164 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 935 transitions. [2022-01-10 06:15:38,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:15:38,165 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 935 transitions. [2022-01-10 06:15:38,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 06:15:38,167 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:15:38,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:15:38,183 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 06:15:38,380 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 06:15:38,381 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:15:38,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:15:38,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1651182718, now seen corresponding path program 1 times [2022-01-10 06:15:38,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:15:38,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666127718] [2022-01-10 06:15:38,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:15:38,382 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:15:38,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:15:38,384 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 06:15:38,386 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 06:15:38,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:15:38,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:15:38,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:15:38,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:15:38,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:15:38,772 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:15:38,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666127718] [2022-01-10 06:15:38,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666127718] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:15:38,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:15:38,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:15:38,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000691185] [2022-01-10 06:15:38,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:15:38,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:15:38,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:15:38,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:15:38,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:15:38,775 INFO L87 Difference]: Start difference. First operand 564 states and 935 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:15:38,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:15:38,831 INFO L93 Difference]: Finished difference Result 1110 states and 1847 transitions. [2022-01-10 06:15:38,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:15:38,832 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2022-01-10 06:15:38,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:15:38,836 INFO L225 Difference]: With dead ends: 1110 [2022-01-10 06:15:38,836 INFO L226 Difference]: Without dead ends: 564 [2022-01-10 06:15:38,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 60 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 06:15:38,840 INFO L933 BasicCegarLoop]: 923 mSDtfsCounter, 12 mSDsluCounter, 1841 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2764 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 06:15:38,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 2764 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:15:38,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-01-10 06:15:38,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2022-01-10 06:15:38,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 441 states have (on average 1.6848072562358276) internal successors, (743), 462 states have internal predecessors, (743), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-01-10 06:15:38,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 934 transitions. [2022-01-10 06:15:38,866 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 934 transitions. Word has length 63 [2022-01-10 06:15:38,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:15:38,917 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 934 transitions. [2022-01-10 06:15:38,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:15:38,918 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 934 transitions. [2022-01-10 06:15:38,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 06:15:38,920 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:15:38,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:15:38,937 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 06:15:39,120 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 06:15:39,121 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:15:39,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:15:39,121 INFO L85 PathProgramCache]: Analyzing trace with hash 722898553, now seen corresponding path program 1 times [2022-01-10 06:15:39,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:15:39,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1370784001] [2022-01-10 06:15:39,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:15:39,122 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:15:39,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:15:39,125 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 06:15:39,127 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 06:15:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:15:39,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:15:39,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:15:39,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:15:39,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:15:39,499 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:15:39,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1370784001] [2022-01-10 06:15:39,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1370784001] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:15:39,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:15:39,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:15:39,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731653299] [2022-01-10 06:15:39,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:15:39,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:15:39,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:15:39,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:15:39,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:15:39,505 INFO L87 Difference]: Start difference. First operand 564 states and 934 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:15:39,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:15:39,559 INFO L93 Difference]: Finished difference Result 1110 states and 1846 transitions. [2022-01-10 06:15:39,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:15:39,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2022-01-10 06:15:39,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:15:39,564 INFO L225 Difference]: With dead ends: 1110 [2022-01-10 06:15:39,564 INFO L226 Difference]: Without dead ends: 564 [2022-01-10 06:15:39,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 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 06:15:39,568 INFO L933 BasicCegarLoop]: 923 mSDtfsCounter, 10 mSDsluCounter, 1841 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2764 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 06:15:39,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2764 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:15:39,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-01-10 06:15:39,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2022-01-10 06:15:39,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 441 states have (on average 1.6825396825396826) internal successors, (742), 462 states have internal predecessors, (742), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-01-10 06:15:39,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 933 transitions. [2022-01-10 06:15:39,589 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 933 transitions. Word has length 64 [2022-01-10 06:15:39,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:15:39,590 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 933 transitions. [2022-01-10 06:15:39,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:15:39,590 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 933 transitions. [2022-01-10 06:15:39,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 06:15:39,592 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:15:39,592 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:15:39,608 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 06:15:39,806 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 06:15:39,806 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:15:39,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:15:39,807 INFO L85 PathProgramCache]: Analyzing trace with hash 342813406, now seen corresponding path program 1 times [2022-01-10 06:15:39,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:15:39,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611969973] [2022-01-10 06:15:39,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:15:39,808 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:15:39,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:15:39,809 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 06:15:39,810 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 06:15:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:15:40,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:15:40,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:15:40,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:15:40,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:15:40,210 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:15:40,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611969973] [2022-01-10 06:15:40,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1611969973] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:15:40,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:15:40,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:15:40,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477645367] [2022-01-10 06:15:40,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:15:40,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:15:40,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:15:40,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:15:40,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:15:40,212 INFO L87 Difference]: Start difference. First operand 564 states and 933 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:15:40,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:15:40,261 INFO L93 Difference]: Finished difference Result 1110 states and 1845 transitions. [2022-01-10 06:15:40,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:15:40,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-01-10 06:15:40,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:15:40,265 INFO L225 Difference]: With dead ends: 1110 [2022-01-10 06:15:40,266 INFO L226 Difference]: Without dead ends: 564 [2022-01-10 06:15:40,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 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 06:15:40,269 INFO L933 BasicCegarLoop]: 923 mSDtfsCounter, 8 mSDsluCounter, 1841 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2764 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 06:15:40,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 2764 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:15:40,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-01-10 06:15:40,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2022-01-10 06:15:40,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 441 states have (on average 1.6802721088435375) internal successors, (741), 462 states have internal predecessors, (741), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-01-10 06:15:40,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 932 transitions. [2022-01-10 06:15:40,289 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 932 transitions. Word has length 65 [2022-01-10 06:15:40,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:15:40,289 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 932 transitions. [2022-01-10 06:15:40,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:15:40,290 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 932 transitions. [2022-01-10 06:15:40,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 06:15:40,291 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:15:40,291 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:15:40,305 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 06:15:40,505 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 06:15:40,505 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:15:40,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:15:40,506 INFO L85 PathProgramCache]: Analyzing trace with hash 482915221, now seen corresponding path program 1 times [2022-01-10 06:15:40,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:15:40,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446299812] [2022-01-10 06:15:40,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:15:40,507 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:15:40,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:15:40,508 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 06:15:40,509 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 06:15:40,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:15:40,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:15:40,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:15:40,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:15:40,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:15:40,873 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:15:40,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446299812] [2022-01-10 06:15:40,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1446299812] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:15:40,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:15:40,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:15:40,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401691124] [2022-01-10 06:15:40,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:15:40,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:15:40,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:15:40,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:15:40,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:15:40,876 INFO L87 Difference]: Start difference. First operand 564 states and 932 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:15:40,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:15:40,920 INFO L93 Difference]: Finished difference Result 1110 states and 1844 transitions. [2022-01-10 06:15:40,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:15:40,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-01-10 06:15:40,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:15:40,927 INFO L225 Difference]: With dead ends: 1110 [2022-01-10 06:15:40,927 INFO L226 Difference]: Without dead ends: 564 [2022-01-10 06:15:40,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 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 06:15:40,934 INFO L933 BasicCegarLoop]: 923 mSDtfsCounter, 6 mSDsluCounter, 1841 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2764 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 06:15:40,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 2764 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:15:40,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-01-10 06:15:40,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2022-01-10 06:15:40,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 441 states have (on average 1.6780045351473922) internal successors, (740), 462 states have internal predecessors, (740), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-01-10 06:15:40,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 931 transitions. [2022-01-10 06:15:40,957 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 931 transitions. Word has length 66 [2022-01-10 06:15:40,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:15:40,961 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 931 transitions. [2022-01-10 06:15:40,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:15:40,962 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 931 transitions. [2022-01-10 06:15:40,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 06:15:40,965 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:15:40,965 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:15:40,981 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 06:15:41,178 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 06:15:41,179 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:15:41,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:15:41,179 INFO L85 PathProgramCache]: Analyzing trace with hash -431056326, now seen corresponding path program 1 times [2022-01-10 06:15:41,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:15:41,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [84673668] [2022-01-10 06:15:41,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:15:41,180 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:15:41,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:15:41,181 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 06:15:41,183 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 06:15:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:15:41,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:15:41,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:15:41,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:15:41,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:15:41,583 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:15:41,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [84673668] [2022-01-10 06:15:41,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [84673668] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:15:41,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:15:41,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:15:41,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908733195] [2022-01-10 06:15:41,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:15:41,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:15:41,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:15:41,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:15:41,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:15:41,585 INFO L87 Difference]: Start difference. First operand 564 states and 931 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 06:15:41,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:15:41,708 INFO L93 Difference]: Finished difference Result 1076 states and 1776 transitions. [2022-01-10 06:15:41,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:15:41,709 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 67 [2022-01-10 06:15:41,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:15:41,713 INFO L225 Difference]: With dead ends: 1076 [2022-01-10 06:15:41,713 INFO L226 Difference]: Without dead ends: 579 [2022-01-10 06:15:41,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 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 06:15:41,716 INFO L933 BasicCegarLoop]: 920 mSDtfsCounter, 117 mSDsluCounter, 4508 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 5428 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 06:15:41,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 5428 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:15:41,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2022-01-10 06:15:41,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 577. [2022-01-10 06:15:41,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 451 states have (on average 1.6740576496674058) internal successors, (755), 474 states have internal predecessors, (755), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2022-01-10 06:15:41,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 950 transitions. [2022-01-10 06:15:41,737 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 950 transitions. Word has length 67 [2022-01-10 06:15:41,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:15:41,737 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 950 transitions. [2022-01-10 06:15:41,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 06:15:41,738 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 950 transitions. [2022-01-10 06:15:41,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 06:15:41,740 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:15:41,740 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:15:41,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-01-10 06:15:41,953 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 06:15:41,954 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:15:41,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:15:41,954 INFO L85 PathProgramCache]: Analyzing trace with hash -671596455, now seen corresponding path program 1 times [2022-01-10 06:15:41,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:15:41,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5721741] [2022-01-10 06:15:41,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:15:41,955 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:15:41,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:15:41,956 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 06:15:41,958 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 06:15:42,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:15:42,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:15:42,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:15:42,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:15:42,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:15:42,332 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:15:42,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5721741] [2022-01-10 06:15:42,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5721741] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:15:42,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:15:42,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:15:42,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271384333] [2022-01-10 06:15:42,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:15:42,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:15:42,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:15:42,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:15:42,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:15:42,334 INFO L87 Difference]: Start difference. First operand 577 states and 950 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:15:42,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:15:42,379 INFO L93 Difference]: Finished difference Result 1128 states and 1870 transitions. [2022-01-10 06:15:42,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:15:42,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-01-10 06:15:42,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:15:42,384 INFO L225 Difference]: With dead ends: 1128 [2022-01-10 06:15:42,384 INFO L226 Difference]: Without dead ends: 558 [2022-01-10 06:15:42,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 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 06:15:42,387 INFO L933 BasicCegarLoop]: 924 mSDtfsCounter, 3 mSDsluCounter, 1841 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2765 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 06:15:42,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2765 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:15:42,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-01-10 06:15:42,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2022-01-10 06:15:42,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 435 states have (on average 1.6689655172413793) internal successors, (726), 456 states have internal predecessors, (726), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-01-10 06:15:42,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 917 transitions. [2022-01-10 06:15:42,404 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 917 transitions. Word has length 67 [2022-01-10 06:15:42,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:15:42,404 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 917 transitions. [2022-01-10 06:15:42,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:15:42,404 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 917 transitions. [2022-01-10 06:15:42,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 06:15:42,406 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:15:42,406 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:15:42,419 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 06:15:42,619 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 06:15:42,619 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:15:42,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:15:42,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1309342962, now seen corresponding path program 1 times [2022-01-10 06:15:42,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:15:42,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1154725492] [2022-01-10 06:15:42,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:15:42,621 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:15:42,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:15:42,622 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 06:15:42,624 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 06:15:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:15:42,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:15:42,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:15:42,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:15:42,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:15:42,982 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:15:42,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1154725492] [2022-01-10 06:15:42,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1154725492] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:15:42,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:15:42,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:15:42,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421690657] [2022-01-10 06:15:42,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:15:42,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:15:42,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:15:42,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:15:42,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:15:42,984 INFO L87 Difference]: Start difference. First operand 558 states and 917 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:15:43,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:15:43,108 INFO L93 Difference]: Finished difference Result 1064 states and 1754 transitions. [2022-01-10 06:15:43,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:15:43,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-01-10 06:15:43,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:15:43,112 INFO L225 Difference]: With dead ends: 1064 [2022-01-10 06:15:43,113 INFO L226 Difference]: Without dead ends: 558 [2022-01-10 06:15:43,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 65 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 06:15:43,116 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 90 mSDsluCounter, 1710 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 2578 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 06:15:43,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 2578 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:15:43,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-01-10 06:15:43,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2022-01-10 06:15:43,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 435 states have (on average 1.6597701149425288) internal successors, (722), 456 states have internal predecessors, (722), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-01-10 06:15:43,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 913 transitions. [2022-01-10 06:15:43,132 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 913 transitions. Word has length 68 [2022-01-10 06:15:43,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:15:43,133 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 913 transitions. [2022-01-10 06:15:43,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:15:43,133 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 913 transitions. [2022-01-10 06:15:43,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 06:15:43,134 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:15:43,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:15:43,149 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 06:15:43,347 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 06:15:43,347 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:15:43,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:15:43,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1275660637, now seen corresponding path program 1 times [2022-01-10 06:15:43,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:15:43,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013173578] [2022-01-10 06:15:43,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:15:43,349 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:15:43,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:15:43,351 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 06:15:43,390 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 06:15:43,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:15:43,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:15:43,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:15:43,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:15:43,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:15:43,745 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:15:43,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013173578] [2022-01-10 06:15:43,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1013173578] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:15:43,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:15:43,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:15:43,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416843212] [2022-01-10 06:15:43,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:15:43,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:15:43,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:15:43,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:15:43,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:15:43,746 INFO L87 Difference]: Start difference. First operand 558 states and 913 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:15:43,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:15:43,850 INFO L93 Difference]: Finished difference Result 1064 states and 1750 transitions. [2022-01-10 06:15:43,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:15:43,851 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-01-10 06:15:43,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:15:43,854 INFO L225 Difference]: With dead ends: 1064 [2022-01-10 06:15:43,854 INFO L226 Difference]: Without dead ends: 558 [2022-01-10 06:15:43,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 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 06:15:43,858 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 85 mSDsluCounter, 1710 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 2578 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 06:15:43,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 2578 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:15:43,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-01-10 06:15:43,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2022-01-10 06:15:43,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 435 states have (on average 1.650574712643678) internal successors, (718), 456 states have internal predecessors, (718), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-01-10 06:15:43,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 909 transitions. [2022-01-10 06:15:43,874 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 909 transitions. Word has length 69 [2022-01-10 06:15:43,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:15:43,874 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 909 transitions. [2022-01-10 06:15:43,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:15:43,874 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 909 transitions. [2022-01-10 06:15:43,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 06:15:43,875 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:15:43,875 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:15:43,892 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 06:15:44,089 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 06:15:44,090 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:15:44,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:15:44,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1857877683, now seen corresponding path program 1 times [2022-01-10 06:15:44,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:15:44,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1402923994] [2022-01-10 06:15:44,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:15:44,091 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:15:44,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:15:44,092 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 06:15:44,093 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 06:15:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:15:44,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:15:44,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:15:44,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:15:44,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:15:44,462 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:15:44,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1402923994] [2022-01-10 06:15:44,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1402923994] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:15:44,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:15:44,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:15:44,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819881141] [2022-01-10 06:15:44,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:15:44,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:15:44,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:15:44,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:15:44,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:15:44,464 INFO L87 Difference]: Start difference. First operand 558 states and 909 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:15:44,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:15:44,553 INFO L93 Difference]: Finished difference Result 1064 states and 1746 transitions. [2022-01-10 06:15:44,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:15:44,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-01-10 06:15:44,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:15:44,560 INFO L225 Difference]: With dead ends: 1064 [2022-01-10 06:15:44,560 INFO L226 Difference]: Without dead ends: 558 [2022-01-10 06:15:44,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 67 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 06:15:44,563 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 80 mSDsluCounter, 1710 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 2578 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 06:15:44,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 2578 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:15:44,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-01-10 06:15:44,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2022-01-10 06:15:44,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 435 states have (on average 1.6413793103448275) internal successors, (714), 456 states have internal predecessors, (714), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-01-10 06:15:44,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 905 transitions. [2022-01-10 06:15:44,581 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 905 transitions. Word has length 70 [2022-01-10 06:15:44,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:15:44,581 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 905 transitions. [2022-01-10 06:15:44,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:15:44,581 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 905 transitions. [2022-01-10 06:15:44,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 06:15:44,582 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:15:44,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:15:44,596 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 06:15:44,796 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 06:15:44,796 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:15:44,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:15:44,796 INFO L85 PathProgramCache]: Analyzing trace with hash -171355341, now seen corresponding path program 1 times [2022-01-10 06:15:44,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:15:44,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040056325] [2022-01-10 06:15:44,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:15:44,797 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:15:44,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:15:44,798 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 06:15:44,800 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 06:15:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:15:45,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:15:45,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:15:45,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:15:45,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:15:45,121 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:15:45,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1040056325] [2022-01-10 06:15:45,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1040056325] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:15:45,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:15:45,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:15:45,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123195520] [2022-01-10 06:15:45,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:15:45,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:15:45,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:15:45,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:15:45,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:15:45,122 INFO L87 Difference]: Start difference. First operand 558 states and 905 transitions. Second operand has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 06:15:45,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:15:45,197 INFO L93 Difference]: Finished difference Result 1064 states and 1742 transitions. [2022-01-10 06:15:45,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:15:45,198 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 70 [2022-01-10 06:15:45,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:15:45,202 INFO L225 Difference]: With dead ends: 1064 [2022-01-10 06:15:45,202 INFO L226 Difference]: Without dead ends: 537 [2022-01-10 06:15:45,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 64 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 06:15:45,205 INFO L933 BasicCegarLoop]: 893 mSDtfsCounter, 110 mSDsluCounter, 4381 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 5274 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 06:15:45,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 5274 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:15:45,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-01-10 06:15:45,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2022-01-10 06:15:45,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 414 states have (on average 1.642512077294686) internal successors, (680), 435 states have internal predecessors, (680), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-01-10 06:15:45,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 871 transitions. [2022-01-10 06:15:45,222 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 871 transitions. Word has length 70 [2022-01-10 06:15:45,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:15:45,222 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 871 transitions. [2022-01-10 06:15:45,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 06:15:45,223 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 871 transitions. [2022-01-10 06:15:45,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 06:15:45,224 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:15:45,224 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:15:45,240 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 06:15:45,437 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 06:15:45,438 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:15:45,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:15:45,438 INFO L85 PathProgramCache]: Analyzing trace with hash 483253730, now seen corresponding path program 1 times [2022-01-10 06:15:45,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:15:45,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [562715245] [2022-01-10 06:15:45,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:15:45,439 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:15:45,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:15:45,440 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 06:15:45,442 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 06:15:45,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:15:45,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:15:45,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:15:45,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:15:45,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:15:45,794 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:15:45,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [562715245] [2022-01-10 06:15:45,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [562715245] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:15:45,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:15:45,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:15:45,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112571763] [2022-01-10 06:15:45,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:15:45,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:15:45,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:15:45,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:15:45,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:15:45,796 INFO L87 Difference]: Start difference. First operand 537 states and 871 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:15:45,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:15:45,851 INFO L93 Difference]: Finished difference Result 1043 states and 1708 transitions. [2022-01-10 06:15:45,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:15:45,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2022-01-10 06:15:45,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:15:45,857 INFO L225 Difference]: With dead ends: 1043 [2022-01-10 06:15:45,857 INFO L226 Difference]: Without dead ends: 537 [2022-01-10 06:15:45,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 68 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 06:15:45,861 INFO L933 BasicCegarLoop]: 861 mSDtfsCounter, 41 mSDsluCounter, 1703 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 2564 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 06:15:45,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 2564 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:15:45,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-01-10 06:15:45,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2022-01-10 06:15:45,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 414 states have (on average 1.6400966183574879) internal successors, (679), 435 states have internal predecessors, (679), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-01-10 06:15:45,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 870 transitions. [2022-01-10 06:15:45,879 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 870 transitions. Word has length 71 [2022-01-10 06:15:45,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:15:45,880 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 870 transitions. [2022-01-10 06:15:45,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:15:45,881 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 870 transitions. [2022-01-10 06:15:45,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 06:15:45,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:15:45,882 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:15:45,897 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 06:15:46,096 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 06:15:46,096 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:15:46,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:15:46,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1423899048, now seen corresponding path program 1 times [2022-01-10 06:15:46,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:15:46,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [775359906] [2022-01-10 06:15:46,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:15:46,097 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:15:46,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:15:46,098 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 06:15:46,100 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 06:15:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:15:46,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:15:46,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:15:46,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:15:46,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:15:46,453 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:15:46,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [775359906] [2022-01-10 06:15:46,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [775359906] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:15:46,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:15:46,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:15:46,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183412546] [2022-01-10 06:15:46,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:15:46,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:15:46,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:15:46,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:15:46,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:15:46,456 INFO L87 Difference]: Start difference. First operand 537 states and 870 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:15:46,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:15:46,506 INFO L93 Difference]: Finished difference Result 1043 states and 1707 transitions. [2022-01-10 06:15:46,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:15:46,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-01-10 06:15:46,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:15:46,511 INFO L225 Difference]: With dead ends: 1043 [2022-01-10 06:15:46,511 INFO L226 Difference]: Without dead ends: 537 [2022-01-10 06:15:46,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 69 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 06:15:46,514 INFO L933 BasicCegarLoop]: 861 mSDtfsCounter, 39 mSDsluCounter, 1703 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2564 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 06:15:46,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 2564 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:15:46,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-01-10 06:15:46,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2022-01-10 06:15:46,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 414 states have (on average 1.6376811594202898) internal successors, (678), 435 states have internal predecessors, (678), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-01-10 06:15:46,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 869 transitions. [2022-01-10 06:15:46,529 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 869 transitions. Word has length 72 [2022-01-10 06:15:46,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:15:46,529 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 869 transitions. [2022-01-10 06:15:46,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:15:46,529 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 869 transitions. [2022-01-10 06:15:46,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 06:15:46,530 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:15:46,530 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:15:46,546 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 06:15:46,743 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 06:15:46,744 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:15:46,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:15:46,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1635391079, now seen corresponding path program 1 times [2022-01-10 06:15:46,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:15:46,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798346921] [2022-01-10 06:15:46,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:15:46,745 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:15:46,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:15:46,746 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 06:15:46,746 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 06:15:46,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:15:46,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 06:15:46,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:15:47,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:15:47,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:15:47,086 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:15:47,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798346921] [2022-01-10 06:15:47,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798346921] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:15:47,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:15:47,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:15:47,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286902027] [2022-01-10 06:15:47,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:15:47,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:15:47,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:15:47,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:15:47,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:15:47,088 INFO L87 Difference]: Start difference. First operand 537 states and 869 transitions. Second operand has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 06:15:47,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:15:47,211 INFO L93 Difference]: Finished difference Result 1037 states and 1695 transitions. [2022-01-10 06:15:47,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 06:15:47,211 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 73 [2022-01-10 06:15:47,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:15:47,214 INFO L225 Difference]: With dead ends: 1037 [2022-01-10 06:15:47,214 INFO L226 Difference]: Without dead ends: 537 [2022-01-10 06:15:47,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 66 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 06:15:47,219 INFO L933 BasicCegarLoop]: 854 mSDtfsCounter, 31 mSDsluCounter, 5102 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 5956 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 06:15:47,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 5956 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:15:47,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-01-10 06:15:47,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2022-01-10 06:15:47,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 414 states have (on average 1.6352657004830917) internal successors, (677), 435 states have internal predecessors, (677), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-01-10 06:15:47,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 868 transitions. [2022-01-10 06:15:47,234 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 868 transitions. Word has length 73 [2022-01-10 06:15:47,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:15:47,234 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 868 transitions. [2022-01-10 06:15:47,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 06:15:47,235 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 868 transitions. [2022-01-10 06:15:47,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 06:15:47,238 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:15:47,238 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:15:47,253 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 06:15:47,450 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 06:15:47,451 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:15:47,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:15:47,451 INFO L85 PathProgramCache]: Analyzing trace with hash -789981491, now seen corresponding path program 1 times [2022-01-10 06:15:47,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:15:47,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997240033] [2022-01-10 06:15:47,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:15:47,452 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:15:47,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:15:47,453 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 06:15:47,455 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 06:15:47,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:15:47,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 682 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:15:47,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:15:48,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:15:48,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:15:48,148 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:15:48,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997240033] [2022-01-10 06:15:48,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1997240033] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:15:48,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:15:48,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 06:15:48,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655940616] [2022-01-10 06:15:48,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:15:48,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:15:48,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:15:48,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:15:48,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:15:48,149 INFO L87 Difference]: Start difference. First operand 537 states and 868 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 06:15:51,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:15:51,916 INFO L93 Difference]: Finished difference Result 2118 states and 3521 transitions. [2022-01-10 06:15:51,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 06:15:51,916 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 74 [2022-01-10 06:15:51,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:15:51,931 INFO L225 Difference]: With dead ends: 2118 [2022-01-10 06:15:51,931 INFO L226 Difference]: Without dead ends: 1626 [2022-01-10 06:15:51,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:15:51,934 INFO L933 BasicCegarLoop]: 1545 mSDtfsCounter, 4504 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 2474 mSolverCounterSat, 1039 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4686 SdHoareTripleChecker+Valid, 2475 SdHoareTripleChecker+Invalid, 3513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1039 IncrementalHoareTripleChecker+Valid, 2474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-01-10 06:15:51,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4686 Valid, 2475 Invalid, 3513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1039 Valid, 2474 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-01-10 06:15:51,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2022-01-10 06:15:51,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 1427. [2022-01-10 06:15:51,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1427 states, 1117 states have (on average 1.6705461056401074) internal successors, (1866), 1156 states have internal predecessors, (1866), 251 states have call successors, (251), 57 states have call predecessors, (251), 58 states have return successors, (256), 228 states have call predecessors, (256), 246 states have call successors, (256) [2022-01-10 06:15:51,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 2373 transitions. [2022-01-10 06:15:51,991 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 2373 transitions. Word has length 74 [2022-01-10 06:15:51,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:15:51,991 INFO L470 AbstractCegarLoop]: Abstraction has 1427 states and 2373 transitions. [2022-01-10 06:15:51,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 06:15:51,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 2373 transitions. [2022-01-10 06:15:51,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 06:15:51,995 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:15:51,995 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:15:52,010 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 06:15:52,208 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 06:15:52,208 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:15:52,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:15:52,209 INFO L85 PathProgramCache]: Analyzing trace with hash 120536424, now seen corresponding path program 1 times [2022-01-10 06:15:52,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:15:52,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126676482] [2022-01-10 06:15:52,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:15:52,210 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:15:52,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:15:52,211 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 06:15:52,214 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 06:15:52,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:15:52,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 06:15:52,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:15:52,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:15:52,749 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:15:52,749 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:15:52,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126676482] [2022-01-10 06:15:52,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126676482] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:15:52,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:15:52,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:15:52,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880821748] [2022-01-10 06:15:52,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:15:52,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:15:52,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:15:52,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:15:52,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:15:52,751 INFO L87 Difference]: Start difference. First operand 1427 states and 2373 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 5 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-01-10 06:15:57,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:15:57,037 INFO L93 Difference]: Finished difference Result 4404 states and 7325 transitions. [2022-01-10 06:15:57,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 06:15:57,039 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 5 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 112 [2022-01-10 06:15:57,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:15:57,057 INFO L225 Difference]: With dead ends: 4404 [2022-01-10 06:15:57,057 INFO L226 Difference]: Without dead ends: 3022 [2022-01-10 06:15:57,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-01-10 06:15:57,066 INFO L933 BasicCegarLoop]: 1353 mSDtfsCounter, 1946 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 5177 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2028 SdHoareTripleChecker+Valid, 3364 SdHoareTripleChecker+Invalid, 5880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 5177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:15:57,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2028 Valid, 3364 Invalid, 5880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 5177 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-01-10 06:15:57,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3022 states. [2022-01-10 06:15:57,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3022 to 2837. [2022-01-10 06:15:57,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2837 states, 2130 states have (on average 1.628638497652582) internal successors, (3469), 2216 states have internal predecessors, (3469), 589 states have call successors, (589), 99 states have call predecessors, (589), 117 states have return successors, (619), 554 states have call predecessors, (619), 584 states have call successors, (619) [2022-01-10 06:15:57,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2837 states to 2837 states and 4677 transitions. [2022-01-10 06:15:57,213 INFO L78 Accepts]: Start accepts. Automaton has 2837 states and 4677 transitions. Word has length 112 [2022-01-10 06:15:57,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:15:57,214 INFO L470 AbstractCegarLoop]: Abstraction has 2837 states and 4677 transitions. [2022-01-10 06:15:57,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 5 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-01-10 06:15:57,214 INFO L276 IsEmpty]: Start isEmpty. Operand 2837 states and 4677 transitions. [2022-01-10 06:15:57,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 06:15:57,217 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:15:57,217 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:15:57,239 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 06:15:57,436 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 06:15:57,437 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:15:57,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:15:57,437 INFO L85 PathProgramCache]: Analyzing trace with hash -682590781, now seen corresponding path program 1 times [2022-01-10 06:15:57,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:15:57,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100680121] [2022-01-10 06:15:57,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:15:57,438 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:15:57,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:15:57,440 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 06:15:57,442 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 06:15:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:15:57,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-10 06:15:57,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:15:58,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:15:58,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:15:58,162 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:15:58,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100680121] [2022-01-10 06:15:58,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2100680121] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:15:58,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:15:58,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 06:15:58,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232083152] [2022-01-10 06:15:58,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:15:58,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 06:15:58,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:15:58,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 06:15:58,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-10 06:15:58,166 INFO L87 Difference]: Start difference. First operand 2837 states and 4677 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 8 states have internal predecessors, (88), 5 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-01-10 06:16:00,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:00,515 INFO L93 Difference]: Finished difference Result 6468 states and 10837 transitions. [2022-01-10 06:16:00,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:16:00,516 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 8 states have internal predecessors, (88), 5 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 113 [2022-01-10 06:16:00,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:00,541 INFO L225 Difference]: With dead ends: 6468 [2022-01-10 06:16:00,541 INFO L226 Difference]: Without dead ends: 3676 [2022-01-10 06:16:00,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-01-10 06:16:00,554 INFO L933 BasicCegarLoop]: 904 mSDtfsCounter, 1399 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 2769 mSolverCounterSat, 554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1399 SdHoareTripleChecker+Valid, 2352 SdHoareTripleChecker+Invalid, 3323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 554 IncrementalHoareTripleChecker+Valid, 2769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:00,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1399 Valid, 2352 Invalid, 3323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [554 Valid, 2769 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 06:16:00,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3676 states. [2022-01-10 06:16:00,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3676 to 2865. [2022-01-10 06:16:00,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2865 states, 2151 states have (on average 1.6225011622501162) internal successors, (3490), 2237 states have internal predecessors, (3490), 589 states have call successors, (589), 99 states have call predecessors, (589), 124 states have return successors, (696), 561 states have call predecessors, (696), 584 states have call successors, (696) [2022-01-10 06:16:00,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2865 states to 2865 states and 4775 transitions. [2022-01-10 06:16:00,748 INFO L78 Accepts]: Start accepts. Automaton has 2865 states and 4775 transitions. Word has length 113 [2022-01-10 06:16:00,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:00,748 INFO L470 AbstractCegarLoop]: Abstraction has 2865 states and 4775 transitions. [2022-01-10 06:16:00,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 8 states have internal predecessors, (88), 5 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-01-10 06:16:00,749 INFO L276 IsEmpty]: Start isEmpty. Operand 2865 states and 4775 transitions. [2022-01-10 06:16:00,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 06:16:00,754 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:00,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:16:00,773 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 06:16:00,955 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 06:16:00,955 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:00,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:00,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1646081839, now seen corresponding path program 1 times [2022-01-10 06:16:00,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:00,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063320188] [2022-01-10 06:16:00,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:00,956 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:00,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:00,957 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 06:16:00,959 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 06:16:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:01,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 869 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 06:16:01,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:01,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:16:01,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:01,535 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:01,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063320188] [2022-01-10 06:16:01,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1063320188] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:01,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:01,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:16:01,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565155439] [2022-01-10 06:16:01,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:01,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:16:01,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:01,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:16:01,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:16:01,538 INFO L87 Difference]: Start difference. First operand 2865 states and 4775 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 5 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-01-10 06:16:05,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:05,555 INFO L93 Difference]: Finished difference Result 9177 states and 15651 transitions. [2022-01-10 06:16:05,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 06:16:05,557 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 5 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 114 [2022-01-10 06:16:05,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:05,626 INFO L225 Difference]: With dead ends: 9177 [2022-01-10 06:16:05,626 INFO L226 Difference]: Without dead ends: 6357 [2022-01-10 06:16:05,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2022-01-10 06:16:05,639 INFO L933 BasicCegarLoop]: 1393 mSDtfsCounter, 2735 mSDsluCounter, 1930 mSDsCounter, 0 mSdLazyCounter, 4102 mSolverCounterSat, 759 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2815 SdHoareTripleChecker+Valid, 3323 SdHoareTripleChecker+Invalid, 4861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 759 IncrementalHoareTripleChecker+Valid, 4102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:05,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2815 Valid, 3323 Invalid, 4861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [759 Valid, 4102 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-01-10 06:16:05,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6357 states. [2022-01-10 06:16:05,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6357 to 6108. [2022-01-10 06:16:05,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6108 states, 4584 states have (on average 1.6147469458987784) internal successors, (7402), 4785 states have internal predecessors, (7402), 1251 states have call successors, (1251), 236 states have call predecessors, (1251), 272 states have return successors, (1441), 1163 states have call predecessors, (1441), 1246 states have call successors, (1441) [2022-01-10 06:16:05,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6108 states to 6108 states and 10094 transitions. [2022-01-10 06:16:05,921 INFO L78 Accepts]: Start accepts. Automaton has 6108 states and 10094 transitions. Word has length 114 [2022-01-10 06:16:05,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:05,921 INFO L470 AbstractCegarLoop]: Abstraction has 6108 states and 10094 transitions. [2022-01-10 06:16:05,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 5 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-01-10 06:16:05,921 INFO L276 IsEmpty]: Start isEmpty. Operand 6108 states and 10094 transitions. [2022-01-10 06:16:05,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-10 06:16:05,925 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:05,925 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:16:05,945 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 06:16:06,145 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 06:16:06,145 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:06,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:06,146 INFO L85 PathProgramCache]: Analyzing trace with hash 668323327, now seen corresponding path program 1 times [2022-01-10 06:16:06,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:06,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1695349994] [2022-01-10 06:16:06,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:06,147 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:06,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:06,148 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 06:16:06,175 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 06:16:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:06,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 06:16:06,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:08,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 06:16:08,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:08,017 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:08,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1695349994] [2022-01-10 06:16:08,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1695349994] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:08,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:08,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:16:08,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828810971] [2022-01-10 06:16:08,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:08,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:16:08,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:08,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:16:08,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:16:08,019 INFO L87 Difference]: Start difference. First operand 6108 states and 10094 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 5 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-01-10 06:16:12,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:12,311 INFO L93 Difference]: Finished difference Result 14290 states and 23782 transitions. [2022-01-10 06:16:12,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 06:16:12,312 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 5 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 116 [2022-01-10 06:16:12,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:12,390 INFO L225 Difference]: With dead ends: 14290 [2022-01-10 06:16:12,390 INFO L226 Difference]: Without dead ends: 8227 [2022-01-10 06:16:12,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:16:12,410 INFO L933 BasicCegarLoop]: 1533 mSDtfsCounter, 3344 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 3491 mSolverCounterSat, 750 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3481 SdHoareTripleChecker+Valid, 2724 SdHoareTripleChecker+Invalid, 4241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 750 IncrementalHoareTripleChecker+Valid, 3491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:12,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3481 Valid, 2724 Invalid, 4241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [750 Valid, 3491 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-01-10 06:16:12,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8227 states. [2022-01-10 06:16:12,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8227 to 7465. [2022-01-10 06:16:12,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7465 states, 5621 states have (on average 1.613413983276997) internal successors, (9069), 5862 states have internal predecessors, (9069), 1503 states have call successors, (1503), 301 states have call predecessors, (1503), 340 states have return successors, (1762), 1378 states have call predecessors, (1762), 1498 states have call successors, (1762) [2022-01-10 06:16:12,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7465 states to 7465 states and 12334 transitions. [2022-01-10 06:16:12,796 INFO L78 Accepts]: Start accepts. Automaton has 7465 states and 12334 transitions. Word has length 116 [2022-01-10 06:16:12,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:12,797 INFO L470 AbstractCegarLoop]: Abstraction has 7465 states and 12334 transitions. [2022-01-10 06:16:12,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 5 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-01-10 06:16:12,797 INFO L276 IsEmpty]: Start isEmpty. Operand 7465 states and 12334 transitions. [2022-01-10 06:16:12,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-10 06:16:12,806 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:12,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:16:12,823 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 06:16:13,014 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 06:16:13,014 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:13,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:13,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1388635749, now seen corresponding path program 1 times [2022-01-10 06:16:13,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:13,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325828759] [2022-01-10 06:16:13,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:13,015 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:13,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:13,016 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 06:16:13,017 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 06:16:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:13,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:16:13,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:13,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:16:13,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:13,659 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:13,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1325828759] [2022-01-10 06:16:13,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1325828759] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:13,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:13,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 06:16:13,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118365926] [2022-01-10 06:16:13,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:13,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:16:13,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:13,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:16:13,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:16:13,660 INFO L87 Difference]: Start difference. First operand 7465 states and 12334 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 5 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-01-10 06:16:16,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:16,477 INFO L93 Difference]: Finished difference Result 21422 states and 35984 transitions. [2022-01-10 06:16:16,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:16:16,478 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 5 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 120 [2022-01-10 06:16:16,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:16,548 INFO L225 Difference]: With dead ends: 21422 [2022-01-10 06:16:16,548 INFO L226 Difference]: Without dead ends: 13968 [2022-01-10 06:16:16,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:16:16,584 INFO L933 BasicCegarLoop]: 1585 mSDtfsCounter, 2603 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 1724 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2715 SdHoareTripleChecker+Valid, 2355 SdHoareTripleChecker+Invalid, 2338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 1724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:16,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2715 Valid, 2355 Invalid, 2338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [614 Valid, 1724 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 06:16:16,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13968 states. [2022-01-10 06:16:17,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13968 to 13663. [2022-01-10 06:16:17,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13663 states, 10153 states have (on average 1.5991332611050921) internal successors, (16236), 10622 states have internal predecessors, (16236), 2889 states have call successors, (2889), 507 states have call predecessors, (2889), 620 states have return successors, (3559), 2722 states have call predecessors, (3559), 2884 states have call successors, (3559) [2022-01-10 06:16:17,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13663 states to 13663 states and 22684 transitions. [2022-01-10 06:16:17,484 INFO L78 Accepts]: Start accepts. Automaton has 13663 states and 22684 transitions. Word has length 120 [2022-01-10 06:16:17,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:17,484 INFO L470 AbstractCegarLoop]: Abstraction has 13663 states and 22684 transitions. [2022-01-10 06:16:17,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 5 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-01-10 06:16:17,485 INFO L276 IsEmpty]: Start isEmpty. Operand 13663 states and 22684 transitions. [2022-01-10 06:16:17,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 06:16:17,489 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:17,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:16:17,506 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 06:16:17,706 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 06:16:17,707 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:17,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:17,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1431979313, now seen corresponding path program 1 times [2022-01-10 06:16:17,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:17,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [308696613] [2022-01-10 06:16:17,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:17,708 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:17,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:17,709 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 06:16:17,709 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 06:16:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:18,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:16:18,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:18,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:16:18,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:18,282 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:18,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [308696613] [2022-01-10 06:16:18,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [308696613] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:18,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:18,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 06:16:18,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392953830] [2022-01-10 06:16:18,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:18,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:16:18,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:18,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:16:18,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:16:18,284 INFO L87 Difference]: Start difference. First operand 13663 states and 22684 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 5 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-01-10 06:16:21,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:21,592 INFO L93 Difference]: Finished difference Result 42266 states and 71837 transitions. [2022-01-10 06:16:21,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:16:21,595 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 5 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 121 [2022-01-10 06:16:21,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:21,757 INFO L225 Difference]: With dead ends: 42266 [2022-01-10 06:16:21,758 INFO L226 Difference]: Without dead ends: 28651 [2022-01-10 06:16:21,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:16:21,833 INFO L933 BasicCegarLoop]: 1583 mSDtfsCounter, 3161 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 1653 mSolverCounterSat, 788 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3274 SdHoareTripleChecker+Valid, 2263 SdHoareTripleChecker+Invalid, 2441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 788 IncrementalHoareTripleChecker+Valid, 1653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:21,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3274 Valid, 2263 Invalid, 2441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [788 Valid, 1653 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 06:16:21,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28651 states. [2022-01-10 06:16:23,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28651 to 28202. [2022-01-10 06:16:23,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28202 states, 20661 states have (on average 1.5876288659793814) internal successors, (32802), 21684 states have internal predecessors, (32802), 6277 states have call successors, (6277), 926 states have call predecessors, (6277), 1263 states have return successors, (8410), 6067 states have call predecessors, (8410), 6272 states have call successors, (8410) [2022-01-10 06:16:23,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28202 states to 28202 states and 47489 transitions. [2022-01-10 06:16:23,698 INFO L78 Accepts]: Start accepts. Automaton has 28202 states and 47489 transitions. Word has length 121 [2022-01-10 06:16:23,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:23,699 INFO L470 AbstractCegarLoop]: Abstraction has 28202 states and 47489 transitions. [2022-01-10 06:16:23,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 5 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-01-10 06:16:23,699 INFO L276 IsEmpty]: Start isEmpty. Operand 28202 states and 47489 transitions. [2022-01-10 06:16:23,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 06:16:23,703 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:23,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:16:23,721 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 06:16:23,918 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 06:16:23,919 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:23,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:23,919 INFO L85 PathProgramCache]: Analyzing trace with hash -254574806, now seen corresponding path program 1 times [2022-01-10 06:16:23,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:23,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1726361496] [2022-01-10 06:16:23,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:23,920 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:23,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:23,921 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 06:16:23,924 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 06:16:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:24,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:16:24,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:24,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:16:24,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:24,649 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:24,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1726361496] [2022-01-10 06:16:24,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1726361496] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:24,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:24,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 06:16:24,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33253734] [2022-01-10 06:16:24,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:24,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:16:24,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:24,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:16:24,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:16:24,650 INFO L87 Difference]: Start difference. First operand 28202 states and 47489 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 5 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-01-10 06:16:29,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:29,765 INFO L93 Difference]: Finished difference Result 92405 states and 160450 transitions. [2022-01-10 06:16:29,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:16:29,766 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 5 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 122 [2022-01-10 06:16:29,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:30,143 INFO L225 Difference]: With dead ends: 92405 [2022-01-10 06:16:30,143 INFO L226 Difference]: Without dead ends: 64253 [2022-01-10 06:16:30,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:16:30,255 INFO L933 BasicCegarLoop]: 1591 mSDtfsCounter, 2644 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 2304 mSolverCounterSat, 668 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2758 SdHoareTripleChecker+Valid, 2479 SdHoareTripleChecker+Invalid, 2972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 668 IncrementalHoareTripleChecker+Valid, 2304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:30,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2758 Valid, 2479 Invalid, 2972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [668 Valid, 2304 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-10 06:16:30,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64253 states.