/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_spec3_product25.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:17:20,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:17:20,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:17:20,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:17:20,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:17:20,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:17:20,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:17:20,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:17:20,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:17:20,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:17:20,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:17:20,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:17:20,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:17:20,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:17:20,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:17:20,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:17:20,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:17:20,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:17:20,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:17:20,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:17:20,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:17:20,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:17:20,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:17:20,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:17:20,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:17:20,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:17:20,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:17:20,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:17:20,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:17:20,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:17:20,151 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:17:20,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:17:20,151 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:17:20,152 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:17:20,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:17:20,153 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:17:20,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:17:20,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:17:20,153 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:17:20,154 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:17:20,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:17:20,156 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 06:17:20,176 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:17:20,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:17:20,177 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:17:20,177 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:17:20,178 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:17:20,178 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:17:20,178 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:17:20,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:17:20,179 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:17:20,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:17:20,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:17:20,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:17:20,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:17:20,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:17:20,180 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:17:20,180 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:17:20,180 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:17:20,180 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:17:20,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:17:20,181 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:17:20,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:17:20,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:17:20,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:17:20,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:17:20,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:17:20,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:17:20,186 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:17:20,186 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:17:20,186 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:17:20,186 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:17:20,186 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:17:20,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:17:20,187 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:17:20,187 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:17:20,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:17:20,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:17:20,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:17:20,364 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:17:20,366 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:17:20,367 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product25.cil.c [2022-01-10 06:17:20,415 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/428d55d0a/66cb843414d94875bc39428aed88da30/FLAG6d3426ea8 [2022-01-10 06:17:20,868 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:17:20,869 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product25.cil.c [2022-01-10 06:17:20,881 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/428d55d0a/66cb843414d94875bc39428aed88da30/FLAG6d3426ea8 [2022-01-10 06:17:20,904 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/428d55d0a/66cb843414d94875bc39428aed88da30 [2022-01-10 06:17:20,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:17:20,907 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:17:20,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:17:20,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:17:20,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:17:20,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:17:20" (1/1) ... [2022-01-10 06:17:20,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245194f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:17:20, skipping insertion in model container [2022-01-10 06:17:20,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:17:20" (1/1) ... [2022-01-10 06:17:20,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:17:20,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:17:21,304 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_spec3_product25.cil.c[27637,27650] [2022-01-10 06:17:21,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:17:21,432 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 06:17:21,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:17:21,486 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_spec3_product25.cil.c[27637,27650] [2022-01-10 06:17:21,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:17:21,538 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:17:21,575 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_spec3_product25.cil.c[27637,27650] [2022-01-10 06:17:21,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:17:21,620 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:17:21,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:17:21 WrapperNode [2022-01-10 06:17:21,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:17:21,621 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:17:21,621 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:17:21,622 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:17:21,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:17:21" (1/1) ... [2022-01-10 06:17:21,660 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:17:21" (1/1) ... [2022-01-10 06:17:21,695 INFO L137 Inliner]: procedures = 91, calls = 340, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 791 [2022-01-10 06:17:21,695 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:17:21,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:17:21,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:17:21,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:17:21,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:17:21" (1/1) ... [2022-01-10 06:17:21,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:17:21" (1/1) ... [2022-01-10 06:17:21,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:17:21" (1/1) ... [2022-01-10 06:17:21,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:17:21" (1/1) ... [2022-01-10 06:17:21,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:17:21" (1/1) ... [2022-01-10 06:17:21,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:17:21" (1/1) ... [2022-01-10 06:17:21,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:17:21" (1/1) ... [2022-01-10 06:17:21,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:17:21,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:17:21,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:17:21,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:17:21,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:17:21" (1/1) ... [2022-01-10 06:17:21,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:17:21,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:17:21,831 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 06:17:21,869 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 06:17:21,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:17:21,897 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-01-10 06:17:21,897 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-01-10 06:17:21,897 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-01-10 06:17:21,897 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-01-10 06:17:21,898 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-01-10 06:17:21,898 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-01-10 06:17:21,898 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-01-10 06:17:21,898 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-01-10 06:17:21,898 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-01-10 06:17:21,898 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-01-10 06:17:21,898 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-01-10 06:17:21,898 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-01-10 06:17:21,899 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-01-10 06:17:21,899 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-01-10 06:17:21,899 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-01-10 06:17:21,899 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-01-10 06:17:21,899 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-01-10 06:17:21,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-01-10 06:17:21,899 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-01-10 06:17:21,899 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-01-10 06:17:21,899 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-01-10 06:17:21,913 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-01-10 06:17:21,913 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-01-10 06:17:21,914 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-01-10 06:17:21,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:17:21,914 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2022-01-10 06:17:21,914 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2022-01-10 06:17:21,914 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-01-10 06:17:21,914 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-01-10 06:17:21,914 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-01-10 06:17:21,914 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-01-10 06:17:21,914 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2022-01-10 06:17:21,914 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2022-01-10 06:17:21,914 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-01-10 06:17:21,914 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-01-10 06:17:21,914 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-01-10 06:17:21,915 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-01-10 06:17:21,915 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-01-10 06:17:21,915 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-01-10 06:17:21,915 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-01-10 06:17:21,915 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-01-10 06:17:21,915 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-01-10 06:17:21,915 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-01-10 06:17:21,915 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-01-10 06:17:21,915 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-01-10 06:17:21,915 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-01-10 06:17:21,915 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-01-10 06:17:21,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:17:21,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:17:21,916 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-01-10 06:17:21,916 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-01-10 06:17:22,017 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:17:22,018 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:17:22,772 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:17:22,780 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:17:22,781 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 06:17:22,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:17:22 BoogieIcfgContainer [2022-01-10 06:17:22,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:17:22,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:17:22,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:17:22,787 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:17:22,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:17:20" (1/3) ... [2022-01-10 06:17:22,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2466c610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:17:22, skipping insertion in model container [2022-01-10 06:17:22,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:17:21" (2/3) ... [2022-01-10 06:17:22,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2466c610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:17:22, skipping insertion in model container [2022-01-10 06:17:22,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:17:22" (3/3) ... [2022-01-10 06:17:22,791 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product25.cil.c [2022-01-10 06:17:22,795 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:17:22,795 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:17:22,833 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:17:22,838 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 06:17:22,838 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:17:22,864 INFO L276 IsEmpty]: Start isEmpty. Operand has 570 states, 444 states have (on average 1.6891891891891893) internal successors, (750), 462 states have internal predecessors, (750), 100 states have call successors, (100), 24 states have call predecessors, (100), 24 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-01-10 06:17:22,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 06:17:22,878 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:17:22,879 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] [2022-01-10 06:17:22,879 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:17:22,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:17:22,883 INFO L85 PathProgramCache]: Analyzing trace with hash 779665332, now seen corresponding path program 1 times [2022-01-10 06:17:22,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:17:22,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655606240] [2022-01-10 06:17:22,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:17:22,892 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:17:22,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:17:22,894 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 06:17:22,895 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 06:17:23,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:17:23,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:17:23,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:17:23,433 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 06:17:23,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:17:23,433 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:17:23,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655606240] [2022-01-10 06:17:23,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655606240] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:17:23,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:17:23,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:17:23,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140918929] [2022-01-10 06:17:23,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:17:23,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:17:23,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:17:23,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:17:23,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:17:23,470 INFO L87 Difference]: Start difference. First operand has 570 states, 444 states have (on average 1.6891891891891893) internal successors, (750), 462 states have internal predecessors, (750), 100 states have call successors, (100), 24 states have call predecessors, (100), 24 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:17:23,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:17:23,702 INFO L93 Difference]: Finished difference Result 1137 states and 1912 transitions. [2022-01-10 06:17:23,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:17:23,709 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 85 [2022-01-10 06:17:23,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:17:23,726 INFO L225 Difference]: With dead ends: 1137 [2022-01-10 06:17:23,726 INFO L226 Difference]: Without dead ends: 575 [2022-01-10 06:17:23,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 79 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 06:17:23,745 INFO L933 BasicCegarLoop]: 931 mSDtfsCounter, 117 mSDsluCounter, 4559 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 5490 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:17:23,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 5490 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:17:23,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-01-10 06:17:23,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 573. [2022-01-10 06:17:23,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 447 states have (on average 1.680089485458613) internal successors, (751), 465 states have internal predecessors, (751), 101 states have call successors, (101), 24 states have call predecessors, (101), 24 states have return successors, (100), 96 states have call predecessors, (100), 98 states have call successors, (100) [2022-01-10 06:17:23,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 952 transitions. [2022-01-10 06:17:23,806 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 952 transitions. Word has length 85 [2022-01-10 06:17:23,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:17:23,806 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 952 transitions. [2022-01-10 06:17:23,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:17:23,807 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 952 transitions. [2022-01-10 06:17:23,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 06:17:23,811 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:17:23,811 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] [2022-01-10 06:17:23,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 06:17:24,016 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 06:17:24,017 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:17:24,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:17:24,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1669910648, now seen corresponding path program 1 times [2022-01-10 06:17:24,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:17:24,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263961729] [2022-01-10 06:17:24,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:17:24,021 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:17:24,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:17:24,022 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 06:17:24,028 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 06:17:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:17:24,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:17:24,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:17:24,448 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 06:17:24,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:17:24,449 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:17:24,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1263961729] [2022-01-10 06:17:24,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1263961729] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:17:24,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:17:24,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:17:24,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694032755] [2022-01-10 06:17:24,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:17:24,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:17:24,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:17:24,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:17:24,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:17:24,456 INFO L87 Difference]: Start difference. First operand 573 states and 952 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:17:24,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:17:24,578 INFO L93 Difference]: Finished difference Result 1141 states and 1907 transitions. [2022-01-10 06:17:24,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:17:24,580 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 86 [2022-01-10 06:17:24,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:17:24,583 INFO L225 Difference]: With dead ends: 1141 [2022-01-10 06:17:24,583 INFO L226 Difference]: Without dead ends: 584 [2022-01-10 06:17:24,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 80 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 06:17:24,587 INFO L933 BasicCegarLoop]: 933 mSDtfsCounter, 103 mSDsluCounter, 4545 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 5478 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:17:24,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 5478 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:17:24,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2022-01-10 06:17:24,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 573. [2022-01-10 06:17:24,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 447 states have (on average 1.680089485458613) internal successors, (751), 465 states have internal predecessors, (751), 101 states have call successors, (101), 24 states have call predecessors, (101), 24 states have return successors, (100), 96 states have call predecessors, (100), 98 states have call successors, (100) [2022-01-10 06:17:24,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 952 transitions. [2022-01-10 06:17:24,629 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 952 transitions. Word has length 86 [2022-01-10 06:17:24,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:17:24,629 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 952 transitions. [2022-01-10 06:17:24,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:17:24,629 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 952 transitions. [2022-01-10 06:17:24,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 06:17:24,632 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:17:24,632 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] [2022-01-10 06:17:24,648 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 06:17:24,833 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 06:17:24,833 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:17:24,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:17:24,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1301787151, now seen corresponding path program 1 times [2022-01-10 06:17:24,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:17:24,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [139275106] [2022-01-10 06:17:24,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:17:24,835 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:17:24,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:17:24,836 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 06:17:24,837 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 06:17:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:17:25,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:17:25,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:17:25,222 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 06:17:25,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:17:25,222 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:17:25,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [139275106] [2022-01-10 06:17:25,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [139275106] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:17:25,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:17:25,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:17:25,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281950400] [2022-01-10 06:17:25,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:17:25,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:17:25,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:17:25,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:17:25,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:17:25,224 INFO L87 Difference]: Start difference. First operand 573 states and 952 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:17:25,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:17:25,286 INFO L93 Difference]: Finished difference Result 1128 states and 1885 transitions. [2022-01-10 06:17:25,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:17:25,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2022-01-10 06:17:25,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:17:25,289 INFO L225 Difference]: With dead ends: 1128 [2022-01-10 06:17:25,289 INFO L226 Difference]: Without dead ends: 543 [2022-01-10 06:17:25,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 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 06:17:25,292 INFO L933 BasicCegarLoop]: 921 mSDtfsCounter, 22 mSDsluCounter, 1835 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2756 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 06:17:25,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 2756 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:17:25,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-01-10 06:17:25,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2022-01-10 06:17:25,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 420 states have (on average 1.6642857142857144) internal successors, (699), 436 states have internal predecessors, (699), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-01-10 06:17:25,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 896 transitions. [2022-01-10 06:17:25,308 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 896 transitions. Word has length 86 [2022-01-10 06:17:25,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:17:25,309 INFO L470 AbstractCegarLoop]: Abstraction has 543 states and 896 transitions. [2022-01-10 06:17:25,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:17:25,309 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 896 transitions. [2022-01-10 06:17:25,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 06:17:25,311 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:17:25,311 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] [2022-01-10 06:17:25,324 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 06:17:25,522 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 06:17:25,522 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:17:25,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:17:25,523 INFO L85 PathProgramCache]: Analyzing trace with hash 705405784, now seen corresponding path program 1 times [2022-01-10 06:17:25,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:17:25,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [177181283] [2022-01-10 06:17:25,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:17:25,523 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:17:25,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:17:25,534 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 06:17:25,535 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 06:17:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:17:25,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:17:25,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:17:25,951 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 06:17:25,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:17:25,951 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:17:25,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [177181283] [2022-01-10 06:17:25,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [177181283] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:17:25,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:17:25,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:17:25,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165959636] [2022-01-10 06:17:25,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:17:25,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:17:25,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:17:25,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:17:25,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:17:25,953 INFO L87 Difference]: Start difference. First operand 543 states and 896 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:17:26,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:17:26,022 INFO L93 Difference]: Finished difference Result 1079 states and 1791 transitions. [2022-01-10 06:17:26,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:17:26,023 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2022-01-10 06:17:26,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:17:26,026 INFO L225 Difference]: With dead ends: 1079 [2022-01-10 06:17:26,026 INFO L226 Difference]: Without dead ends: 537 [2022-01-10 06:17:26,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 81 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 06:17:26,029 INFO L933 BasicCegarLoop]: 885 mSDtfsCounter, 89 mSDsluCounter, 4356 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5241 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:17:26,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 5241 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:17:26,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-01-10 06:17:26,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2022-01-10 06:17:26,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 414 states have (on average 1.6570048309178744) internal successors, (686), 430 states have internal predecessors, (686), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-01-10 06:17:26,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 883 transitions. [2022-01-10 06:17:26,044 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 883 transitions. Word has length 87 [2022-01-10 06:17:26,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:17:26,044 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 883 transitions. [2022-01-10 06:17:26,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:17:26,045 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 883 transitions. [2022-01-10 06:17:26,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 06:17:26,046 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:17:26,046 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] [2022-01-10 06:17:26,072 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 06:17:26,258 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 06:17:26,258 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:17:26,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:17:26,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1921779812, now seen corresponding path program 1 times [2022-01-10 06:17:26,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:17:26,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025333235] [2022-01-10 06:17:26,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:17:26,259 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:17:26,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:17:26,277 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 06:17:26,277 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 06:17:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:17:26,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:17:26,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:17:26,654 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 06:17:26,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:17:26,654 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:17:26,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025333235] [2022-01-10 06:17:26,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025333235] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:17:26,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:17:26,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:17:26,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088134310] [2022-01-10 06:17:26,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:17:26,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:17:26,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:17:26,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:17:26,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:17:26,655 INFO L87 Difference]: Start difference. First operand 537 states and 883 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:17:26,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:17:26,721 INFO L93 Difference]: Finished difference Result 1067 states and 1765 transitions. [2022-01-10 06:17:26,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:17:26,722 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 88 [2022-01-10 06:17:26,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:17:26,725 INFO L225 Difference]: With dead ends: 1067 [2022-01-10 06:17:26,725 INFO L226 Difference]: Without dead ends: 531 [2022-01-10 06:17:26,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 82 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 06:17:26,728 INFO L933 BasicCegarLoop]: 873 mSDtfsCounter, 75 mSDsluCounter, 4308 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 5181 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:17:26,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 5181 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:17:26,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2022-01-10 06:17:26,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 531. [2022-01-10 06:17:26,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 408 states have (on average 1.6495098039215685) internal successors, (673), 424 states have internal predecessors, (673), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-01-10 06:17:26,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 870 transitions. [2022-01-10 06:17:26,742 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 870 transitions. Word has length 88 [2022-01-10 06:17:26,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:17:26,742 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 870 transitions. [2022-01-10 06:17:26,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:17:26,743 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 870 transitions. [2022-01-10 06:17:26,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 06:17:26,744 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:17:26,744 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] [2022-01-10 06:17:26,769 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 06:17:26,956 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 06:17:26,956 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:17:26,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:17:26,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1563428707, now seen corresponding path program 1 times [2022-01-10 06:17:26,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:17:26,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [44187575] [2022-01-10 06:17:26,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:17:26,957 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:17:26,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:17:26,958 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 06:17:26,960 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 06:17:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:17:27,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:17:27,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:17:27,365 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 06:17:27,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:17:27,365 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:17:27,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [44187575] [2022-01-10 06:17:27,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [44187575] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:17:27,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:17:27,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:17:27,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329491186] [2022-01-10 06:17:27,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:17:27,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:17:27,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:17:27,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:17:27,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:17:27,366 INFO L87 Difference]: Start difference. First operand 531 states and 870 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:17:27,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:17:27,441 INFO L93 Difference]: Finished difference Result 1055 states and 1739 transitions. [2022-01-10 06:17:27,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:17:27,443 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 88 [2022-01-10 06:17:27,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:17:27,445 INFO L225 Difference]: With dead ends: 1055 [2022-01-10 06:17:27,445 INFO L226 Difference]: Without dead ends: 531 [2022-01-10 06:17:27,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 82 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 06:17:27,448 INFO L933 BasicCegarLoop]: 861 mSDtfsCounter, 50 mSDsluCounter, 4272 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 5133 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:17:27,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 5133 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:17:27,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2022-01-10 06:17:27,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 531. [2022-01-10 06:17:27,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 408 states have (on average 1.6470588235294117) internal successors, (672), 424 states have internal predecessors, (672), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-01-10 06:17:27,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 869 transitions. [2022-01-10 06:17:27,462 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 869 transitions. Word has length 88 [2022-01-10 06:17:27,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:17:27,462 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 869 transitions. [2022-01-10 06:17:27,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:17:27,462 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 869 transitions. [2022-01-10 06:17:27,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 06:17:27,464 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:17:27,464 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] [2022-01-10 06:17:27,487 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 06:17:27,687 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 06:17:27,688 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:17:27,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:17:27,688 INFO L85 PathProgramCache]: Analyzing trace with hash -257493252, now seen corresponding path program 1 times [2022-01-10 06:17:27,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:17:27,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659694464] [2022-01-10 06:17:27,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:17:27,689 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:17:27,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:17:27,691 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 06:17:27,693 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 06:17:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:17:27,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 06:17:27,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:17:28,066 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 06:17:28,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:17:28,066 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:17:28,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659694464] [2022-01-10 06:17:28,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659694464] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:17:28,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:17:28,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:17:28,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163638392] [2022-01-10 06:17:28,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:17:28,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:17:28,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:17:28,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:17:28,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:17:28,067 INFO L87 Difference]: Start difference. First operand 531 states and 869 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:17:28,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:17:28,158 INFO L93 Difference]: Finished difference Result 1049 states and 1726 transitions. [2022-01-10 06:17:28,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 06:17:28,158 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 89 [2022-01-10 06:17:28,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:17:28,160 INFO L225 Difference]: With dead ends: 1049 [2022-01-10 06:17:28,160 INFO L226 Difference]: Without dead ends: 531 [2022-01-10 06:17:28,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 82 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 06:17:28,163 INFO L933 BasicCegarLoop]: 851 mSDtfsCounter, 41 mSDsluCounter, 5079 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 5930 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:17:28,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 5930 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:17:28,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2022-01-10 06:17:28,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 531. [2022-01-10 06:17:28,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 408 states have (on average 1.6446078431372548) internal successors, (671), 424 states have internal predecessors, (671), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-01-10 06:17:28,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 868 transitions. [2022-01-10 06:17:28,175 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 868 transitions. Word has length 89 [2022-01-10 06:17:28,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:17:28,175 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 868 transitions. [2022-01-10 06:17:28,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:17:28,176 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 868 transitions. [2022-01-10 06:17:28,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 06:17:28,177 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:17:28,177 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] [2022-01-10 06:17:28,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 06:17:28,388 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 06:17:28,389 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:17:28,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:17:28,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1217645444, now seen corresponding path program 1 times [2022-01-10 06:17:28,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:17:28,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667021908] [2022-01-10 06:17:28,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:17:28,390 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:17:28,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:17:28,391 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 06:17:28,392 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 06:17:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:17:28,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 06:17:28,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:17:28,780 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 06:17:28,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:17:28,780 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:17:28,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667021908] [2022-01-10 06:17:28,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667021908] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:17:28,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:17:28,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:17:28,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967938080] [2022-01-10 06:17:28,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:17:28,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:17:28,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:17:28,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:17:28,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:17:28,781 INFO L87 Difference]: Start difference. First operand 531 states and 868 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:17:28,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:17:28,901 INFO L93 Difference]: Finished difference Result 1049 states and 1724 transitions. [2022-01-10 06:17:28,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 06:17:28,903 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 90 [2022-01-10 06:17:28,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:17:28,905 INFO L225 Difference]: With dead ends: 1049 [2022-01-10 06:17:28,905 INFO L226 Difference]: Without dead ends: 531 [2022-01-10 06:17:28,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 83 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 06:17:28,909 INFO L933 BasicCegarLoop]: 851 mSDtfsCounter, 38 mSDsluCounter, 5079 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 5930 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:17:28,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 5930 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:17:28,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2022-01-10 06:17:28,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 531. [2022-01-10 06:17:28,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 408 states have (on average 1.642156862745098) internal successors, (670), 424 states have internal predecessors, (670), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-01-10 06:17:28,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 867 transitions. [2022-01-10 06:17:28,922 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 867 transitions. Word has length 90 [2022-01-10 06:17:28,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:17:28,922 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 867 transitions. [2022-01-10 06:17:28,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:17:28,922 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 867 transitions. [2022-01-10 06:17:28,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 06:17:28,924 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:17:28,924 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] [2022-01-10 06:17:28,945 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 06:17:29,135 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 06:17:29,136 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:17:29,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:17:29,136 INFO L85 PathProgramCache]: Analyzing trace with hash -2060266495, now seen corresponding path program 1 times [2022-01-10 06:17:29,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:17:29,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [382983784] [2022-01-10 06:17:29,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:17:29,137 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:17:29,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:17:29,138 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 06:17:29,176 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 06:17:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:17:29,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 06:17:29,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:17:29,558 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 06:17:29,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:17:29,558 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:17:29,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [382983784] [2022-01-10 06:17:29,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [382983784] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:17:29,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:17:29,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:17:29,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705785168] [2022-01-10 06:17:29,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:17:29,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:17:29,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:17:29,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:17:29,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:17:29,560 INFO L87 Difference]: Start difference. First operand 531 states and 867 transitions. Second operand has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:17:29,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:17:29,648 INFO L93 Difference]: Finished difference Result 1049 states and 1722 transitions. [2022-01-10 06:17:29,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 06:17:29,650 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 91 [2022-01-10 06:17:29,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:17:29,652 INFO L225 Difference]: With dead ends: 1049 [2022-01-10 06:17:29,652 INFO L226 Difference]: Without dead ends: 531 [2022-01-10 06:17:29,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 84 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 06:17:29,655 INFO L933 BasicCegarLoop]: 851 mSDtfsCounter, 35 mSDsluCounter, 5079 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 5930 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:17:29,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 5930 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:17:29,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2022-01-10 06:17:29,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 531. [2022-01-10 06:17:29,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 408 states have (on average 1.6397058823529411) internal successors, (669), 424 states have internal predecessors, (669), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-01-10 06:17:29,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 866 transitions. [2022-01-10 06:17:29,669 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 866 transitions. Word has length 91 [2022-01-10 06:17:29,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:17:29,669 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 866 transitions. [2022-01-10 06:17:29,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:17:29,669 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 866 transitions. [2022-01-10 06:17:29,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 06:17:29,671 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:17:29,671 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] [2022-01-10 06:17:29,699 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 06:17:29,883 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 06:17:29,883 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:17:29,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:17:29,884 INFO L85 PathProgramCache]: Analyzing trace with hash 740577825, now seen corresponding path program 1 times [2022-01-10 06:17:29,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:17:29,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848410256] [2022-01-10 06:17:29,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:17:29,884 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:17:29,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:17:29,888 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 06:17:29,925 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 06:17:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:17:30,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 06:17:30,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:17:30,291 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 06:17:30,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:17:30,291 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:17:30,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848410256] [2022-01-10 06:17:30,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848410256] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:17:30,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:17:30,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:17:30,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733044316] [2022-01-10 06:17:30,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:17:30,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:17:30,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:17:30,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:17:30,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:17:30,293 INFO L87 Difference]: Start difference. First operand 531 states and 866 transitions. Second operand has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:17:30,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:17:30,377 INFO L93 Difference]: Finished difference Result 1049 states and 1720 transitions. [2022-01-10 06:17:30,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 06:17:30,379 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 92 [2022-01-10 06:17:30,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:17:30,381 INFO L225 Difference]: With dead ends: 1049 [2022-01-10 06:17:30,381 INFO L226 Difference]: Without dead ends: 531 [2022-01-10 06:17:30,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 85 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 06:17:30,384 INFO L933 BasicCegarLoop]: 851 mSDtfsCounter, 32 mSDsluCounter, 5079 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 5930 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:17:30,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 5930 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:17:30,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2022-01-10 06:17:30,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 531. [2022-01-10 06:17:30,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 408 states have (on average 1.6372549019607843) internal successors, (668), 424 states have internal predecessors, (668), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-01-10 06:17:30,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 865 transitions. [2022-01-10 06:17:30,397 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 865 transitions. Word has length 92 [2022-01-10 06:17:30,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:17:30,397 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 865 transitions. [2022-01-10 06:17:30,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:17:30,397 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 865 transitions. [2022-01-10 06:17:30,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 06:17:30,398 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:17:30,398 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] [2022-01-10 06:17:30,421 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 06:17:30,610 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 06:17:30,610 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:17:30,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:17:30,611 INFO L85 PathProgramCache]: Analyzing trace with hash 524731654, now seen corresponding path program 1 times [2022-01-10 06:17:30,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:17:30,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [610489176] [2022-01-10 06:17:30,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:17:30,611 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:17:30,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:17:30,614 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 06:17:30,615 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 06:17:30,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:17:30,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:17:30,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:17:31,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:17:31,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:17:31,037 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:17:31,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [610489176] [2022-01-10 06:17:31,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [610489176] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:17:31,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:17:31,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 06:17:31,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862171958] [2022-01-10 06:17:31,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:17:31,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:17:31,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:17:31,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:17:31,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:17:31,038 INFO L87 Difference]: Start difference. First operand 531 states and 865 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:17:31,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:17:31,576 INFO L93 Difference]: Finished difference Result 1560 states and 2579 transitions. [2022-01-10 06:17:31,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:17:31,578 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 93 [2022-01-10 06:17:31,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:17:31,582 INFO L225 Difference]: With dead ends: 1560 [2022-01-10 06:17:31,582 INFO L226 Difference]: Without dead ends: 1047 [2022-01-10 06:17:31,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:17:31,586 INFO L933 BasicCegarLoop]: 932 mSDtfsCounter, 851 mSDsluCounter, 3492 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 4424 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 06:17:31,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [856 Valid, 4424 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 06:17:31,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2022-01-10 06:17:31,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 1038. [2022-01-10 06:17:31,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 801 states have (on average 1.6404494382022472) internal successors, (1314), 832 states have internal predecessors, (1314), 192 states have call successors, (192), 44 states have call predecessors, (192), 44 states have return successors, (203), 187 states have call predecessors, (203), 188 states have call successors, (203) [2022-01-10 06:17:31,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1709 transitions. [2022-01-10 06:17:31,619 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1709 transitions. Word has length 93 [2022-01-10 06:17:31,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:17:31,619 INFO L470 AbstractCegarLoop]: Abstraction has 1038 states and 1709 transitions. [2022-01-10 06:17:31,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:17:31,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1709 transitions. [2022-01-10 06:17:31,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 06:17:31,621 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:17:31,621 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] [2022-01-10 06:17:31,648 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 06:17:31,850 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 06:17:31,850 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:17:31,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:17:31,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1343578106, now seen corresponding path program 1 times [2022-01-10 06:17:31,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:17:31,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1799087949] [2022-01-10 06:17:31,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:17:31,851 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:17:31,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:17:31,852 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 06:17:31,853 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 06:17:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:17:32,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:17:32,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:17:32,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:17:32,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:17:32,295 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:17:32,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1799087949] [2022-01-10 06:17:32,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1799087949] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:17:32,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:17:32,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:17:32,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276524650] [2022-01-10 06:17:32,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:17:32,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:17:32,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:17:32,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:17:32,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:17:32,296 INFO L87 Difference]: Start difference. First operand 1038 states and 1709 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2022-01-10 06:17:32,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:17:32,699 INFO L93 Difference]: Finished difference Result 2540 states and 4200 transitions. [2022-01-10 06:17:32,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:17:32,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 93 [2022-01-10 06:17:32,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:17:32,706 INFO L225 Difference]: With dead ends: 2540 [2022-01-10 06:17:32,706 INFO L226 Difference]: Without dead ends: 1520 [2022-01-10 06:17:32,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:17:32,711 INFO L933 BasicCegarLoop]: 936 mSDtfsCounter, 852 mSDsluCounter, 2631 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 3567 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:17:32,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [852 Valid, 3567 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:17:32,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2022-01-10 06:17:32,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1510. [2022-01-10 06:17:32,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1510 states, 1165 states have (on average 1.6145922746781116) internal successors, (1881), 1210 states have internal predecessors, (1881), 278 states have call successors, (278), 66 states have call predecessors, (278), 66 states have return successors, (300), 271 states have call predecessors, (300), 273 states have call successors, (300) [2022-01-10 06:17:32,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 2459 transitions. [2022-01-10 06:17:32,746 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 2459 transitions. Word has length 93 [2022-01-10 06:17:32,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:17:32,746 INFO L470 AbstractCegarLoop]: Abstraction has 1510 states and 2459 transitions. [2022-01-10 06:17:32,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2022-01-10 06:17:32,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 2459 transitions. [2022-01-10 06:17:32,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 06:17:32,748 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:17:32,748 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] [2022-01-10 06:17:32,760 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 06:17:32,960 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 06:17:32,960 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:17:32,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:17:32,961 INFO L85 PathProgramCache]: Analyzing trace with hash 703824655, now seen corresponding path program 1 times [2022-01-10 06:17:32,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:17:32,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [438505140] [2022-01-10 06:17:32,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:17:32,961 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:17:32,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:17:32,962 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 06:17:32,964 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 06:17:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:17:33,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:17:33,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:17:33,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:17:33,350 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:17:33,350 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:17:33,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [438505140] [2022-01-10 06:17:33,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [438505140] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:17:33,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:17:33,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 06:17:33,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651340512] [2022-01-10 06:17:33,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:17:33,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:17:33,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:17:33,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:17:33,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:17:33,351 INFO L87 Difference]: Start difference. First operand 1510 states and 2459 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:17:34,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:17:34,249 INFO L93 Difference]: Finished difference Result 5352 states and 9082 transitions. [2022-01-10 06:17:34,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:17:34,251 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 101 [2022-01-10 06:17:34,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:17:34,268 INFO L225 Difference]: With dead ends: 5352 [2022-01-10 06:17:34,268 INFO L226 Difference]: Without dead ends: 3860 [2022-01-10 06:17:34,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:17:34,276 INFO L933 BasicCegarLoop]: 1314 mSDtfsCounter, 1138 mSDsluCounter, 4495 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 5809 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 06:17:34,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1207 Valid, 5809 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 06:17:34,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3860 states. [2022-01-10 06:17:34,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3860 to 2960. [2022-01-10 06:17:34,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2960 states, 2290 states have (on average 1.611353711790393) internal successors, (3690), 2378 states have internal predecessors, (3690), 536 states have call successors, (536), 129 states have call predecessors, (536), 133 states have return successors, (679), 528 states have call predecessors, (679), 528 states have call successors, (679) [2022-01-10 06:17:34,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2960 states to 2960 states and 4905 transitions. [2022-01-10 06:17:34,367 INFO L78 Accepts]: Start accepts. Automaton has 2960 states and 4905 transitions. Word has length 101 [2022-01-10 06:17:34,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:17:34,367 INFO L470 AbstractCegarLoop]: Abstraction has 2960 states and 4905 transitions. [2022-01-10 06:17:34,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:17:34,367 INFO L276 IsEmpty]: Start isEmpty. Operand 2960 states and 4905 transitions. [2022-01-10 06:17:34,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 06:17:34,369 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:17:34,369 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] [2022-01-10 06:17:34,380 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 06:17:34,580 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 06:17:34,580 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:17:34,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:17:34,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1471744497, now seen corresponding path program 1 times [2022-01-10 06:17:34,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:17:34,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285850907] [2022-01-10 06:17:34,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:17:34,581 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:17:34,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:17:34,582 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 06:17:34,584 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 06:17:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:17:34,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:17:34,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:17:35,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:17:35,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:17:35,009 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:17:35,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285850907] [2022-01-10 06:17:35,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285850907] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:17:35,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:17:35,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:17:35,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329746403] [2022-01-10 06:17:35,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:17:35,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:17:35,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:17:35,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:17:35,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:17:35,010 INFO L87 Difference]: Start difference. First operand 2960 states and 4905 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:17:35,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:17:35,132 INFO L93 Difference]: Finished difference Result 5920 states and 9938 transitions. [2022-01-10 06:17:35,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:17:35,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2022-01-10 06:17:35,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:17:35,146 INFO L225 Difference]: With dead ends: 5920 [2022-01-10 06:17:35,146 INFO L226 Difference]: Without dead ends: 2978 [2022-01-10 06:17:35,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 99 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 06:17:35,167 INFO L933 BasicCegarLoop]: 845 mSDtfsCounter, 19 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 2508 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:17:35,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 2508 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:17:35,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2022-01-10 06:17:35,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 2972. [2022-01-10 06:17:35,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2972 states, 2299 states have (on average 1.6076555023923444) internal successors, (3696), 2387 states have internal predecessors, (3696), 536 states have call successors, (536), 135 states have call predecessors, (536), 136 states have return successors, (663), 525 states have call predecessors, (663), 528 states have call successors, (663) [2022-01-10 06:17:35,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2972 states to 2972 states and 4895 transitions. [2022-01-10 06:17:35,274 INFO L78 Accepts]: Start accepts. Automaton has 2972 states and 4895 transitions. Word has length 102 [2022-01-10 06:17:35,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:17:35,274 INFO L470 AbstractCegarLoop]: Abstraction has 2972 states and 4895 transitions. [2022-01-10 06:17:35,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:17:35,274 INFO L276 IsEmpty]: Start isEmpty. Operand 2972 states and 4895 transitions. [2022-01-10 06:17:35,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 06:17:35,275 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:17:35,275 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:17:35,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 06:17:35,487 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 06:17:35,487 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:17:35,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:17:35,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1739423797, now seen corresponding path program 1 times [2022-01-10 06:17:35,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:17:35,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293572294] [2022-01-10 06:17:35,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:17:35,488 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:17:35,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:17:35,489 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 06:17:35,490 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 06:17:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:17:35,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:17:35,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:17:35,924 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 06:17:35,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:17:35,924 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:17:35,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293572294] [2022-01-10 06:17:35,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293572294] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:17:35,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:17:35,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 06:17:35,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273381661] [2022-01-10 06:17:35,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:17:35,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:17:35,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:17:35,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:17:35,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:17:35,925 INFO L87 Difference]: Start difference. First operand 2972 states and 4895 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:17:37,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:17:37,004 INFO L93 Difference]: Finished difference Result 10622 states and 18480 transitions. [2022-01-10 06:17:37,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:17:37,006 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 110 [2022-01-10 06:17:37,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:17:37,051 INFO L225 Difference]: With dead ends: 10622 [2022-01-10 06:17:37,051 INFO L226 Difference]: Without dead ends: 7668 [2022-01-10 06:17:37,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:17:37,071 INFO L933 BasicCegarLoop]: 1274 mSDtfsCounter, 1112 mSDsluCounter, 4383 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 5657 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 06:17:37,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1177 Valid, 5657 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 06:17:37,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7668 states. [2022-01-10 06:17:37,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7668 to 5908. [2022-01-10 06:17:37,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5908 states, 4576 states have (on average 1.6038024475524475) internal successors, (7339), 4750 states have internal predecessors, (7339), 1055 states have call successors, (1055), 267 states have call predecessors, (1055), 276 states have return successors, (1540), 1042 states have call predecessors, (1540), 1041 states have call successors, (1540) [2022-01-10 06:17:37,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5908 states to 5908 states and 9934 transitions. [2022-01-10 06:17:37,317 INFO L78 Accepts]: Start accepts. Automaton has 5908 states and 9934 transitions. Word has length 110 [2022-01-10 06:17:37,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:17:37,318 INFO L470 AbstractCegarLoop]: Abstraction has 5908 states and 9934 transitions. [2022-01-10 06:17:37,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:17:37,318 INFO L276 IsEmpty]: Start isEmpty. Operand 5908 states and 9934 transitions. [2022-01-10 06:17:37,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 06:17:37,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:17:37,320 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:17:37,333 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 06:17:37,533 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 06:17:37,534 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:17:37,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:17:37,534 INFO L85 PathProgramCache]: Analyzing trace with hash 383600225, now seen corresponding path program 1 times [2022-01-10 06:17:37,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:17:37,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [487740312] [2022-01-10 06:17:37,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:17:37,535 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:17:37,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:17:37,548 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 06:17:37,563 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 06:17:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:17:37,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 833 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:17:37,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:17:37,969 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 06:17:37,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:17:37,970 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:17:37,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [487740312] [2022-01-10 06:17:37,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [487740312] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:17:37,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:17:37,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:17:37,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624035645] [2022-01-10 06:17:37,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:17:37,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:17:37,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:17:37,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:17:37,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:17:37,971 INFO L87 Difference]: Start difference. First operand 5908 states and 9934 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:17:38,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:17:38,220 INFO L93 Difference]: Finished difference Result 11870 states and 20295 transitions. [2022-01-10 06:17:38,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:17:38,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2022-01-10 06:17:38,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:17:38,254 INFO L225 Difference]: With dead ends: 11870 [2022-01-10 06:17:38,254 INFO L226 Difference]: Without dead ends: 5980 [2022-01-10 06:17:38,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:17:38,292 INFO L933 BasicCegarLoop]: 843 mSDtfsCounter, 21 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 2506 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:17:38,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 2506 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:17:38,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5980 states. [2022-01-10 06:17:38,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5980 to 5968. [2022-01-10 06:17:38,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5968 states, 4630 states have (on average 1.5980561555075594) internal successors, (7399), 4792 states have internal predecessors, (7399), 1055 states have call successors, (1055), 291 states have call predecessors, (1055), 282 states have return successors, (1516), 1036 states have call predecessors, (1516), 1041 states have call successors, (1516) [2022-01-10 06:17:38,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5968 states to 5968 states and 9970 transitions. [2022-01-10 06:17:38,554 INFO L78 Accepts]: Start accepts. Automaton has 5968 states and 9970 transitions. Word has length 111 [2022-01-10 06:17:38,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:17:38,555 INFO L470 AbstractCegarLoop]: Abstraction has 5968 states and 9970 transitions. [2022-01-10 06:17:38,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:17:38,555 INFO L276 IsEmpty]: Start isEmpty. Operand 5968 states and 9970 transitions. [2022-01-10 06:17:38,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-10 06:17:38,556 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:17:38,556 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:17:38,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-01-10 06:17:38,767 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 06:17:38,767 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:17:38,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:17:38,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1809203665, now seen corresponding path program 1 times [2022-01-10 06:17:38,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:17:38,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2019627546] [2022-01-10 06:17:38,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:17:38,768 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:17:38,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:17:38,769 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 06:17:38,770 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 06:17:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:17:39,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:17:39,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:17:39,251 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 06:17:39,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:17:39,251 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:17:39,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2019627546] [2022-01-10 06:17:39,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2019627546] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:17:39,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:17:39,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 06:17:39,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519430710] [2022-01-10 06:17:39,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:17:39,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:17:39,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:17:39,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:17:39,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:17:39,252 INFO L87 Difference]: Start difference. First operand 5968 states and 9970 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:17:40,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:17:40,520 INFO L93 Difference]: Finished difference Result 21334 states and 38516 transitions. [2022-01-10 06:17:40,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:17:40,522 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 120 [2022-01-10 06:17:40,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:17:40,622 INFO L225 Difference]: With dead ends: 21334 [2022-01-10 06:17:40,622 INFO L226 Difference]: Without dead ends: 15384 [2022-01-10 06:17:40,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:17:40,732 INFO L933 BasicCegarLoop]: 1267 mSDtfsCounter, 1097 mSDsluCounter, 4374 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 5641 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 06:17:40,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1159 Valid, 5641 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 06:17:40,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15384 states. [2022-01-10 06:17:41,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15384 to 11936. [2022-01-10 06:17:41,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11936 states, 9265 states have (on average 1.5939557474365893) internal successors, (14768), 9587 states have internal predecessors, (14768), 2096 states have call successors, (2096), 579 states have call predecessors, (2096), 574 states have return successors, (3665), 2073 states have call predecessors, (3665), 2070 states have call successors, (3665) [2022-01-10 06:17:41,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11936 states to 11936 states and 20529 transitions. [2022-01-10 06:17:41,389 INFO L78 Accepts]: Start accepts. Automaton has 11936 states and 20529 transitions. Word has length 120 [2022-01-10 06:17:41,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:17:41,389 INFO L470 AbstractCegarLoop]: Abstraction has 11936 states and 20529 transitions. [2022-01-10 06:17:41,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:17:41,390 INFO L276 IsEmpty]: Start isEmpty. Operand 11936 states and 20529 transitions. [2022-01-10 06:17:41,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 06:17:41,391 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:17:41,391 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:17:41,417 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 06:17:41,604 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 06:17:41,605 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:17:41,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:17:41,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1931648771, now seen corresponding path program 1 times [2022-01-10 06:17:41,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:17:41,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [9561125] [2022-01-10 06:17:41,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:17:41,606 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:17:41,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:17:41,607 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 06:17:41,645 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 06:17:41,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:17:41,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:17:41,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:17:42,010 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 06:17:42,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:17:42,010 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:17:42,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [9561125] [2022-01-10 06:17:42,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [9561125] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:17:42,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:17:42,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:17:42,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846072685] [2022-01-10 06:17:42,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:17:42,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:17:42,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:17:42,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:17:42,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:17:42,011 INFO L87 Difference]: Start difference. First operand 11936 states and 20529 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:17:42,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:17:42,635 INFO L93 Difference]: Finished difference Result 23998 states and 42343 transitions. [2022-01-10 06:17:42,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:17:42,635 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 121 [2022-01-10 06:17:42,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:17:42,732 INFO L225 Difference]: With dead ends: 23998 [2022-01-10 06:17:42,732 INFO L226 Difference]: Without dead ends: 12080 [2022-01-10 06:17:42,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 06:17:42,816 INFO L933 BasicCegarLoop]: 843 mSDtfsCounter, 21 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 2506 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:17:42,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 2506 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:17:42,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12080 states. [2022-01-10 06:17:43,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12080 to 12056. [2022-01-10 06:17:43,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12056 states, 9373 states have (on average 1.588392190333938) internal successors, (14888), 9695 states have internal predecessors, (14888), 2096 states have call successors, (2096), 603 states have call predecessors, (2096), 586 states have return successors, (3633), 2061 states have call predecessors, (3633), 2070 states have call successors, (3633) [2022-01-10 06:17:43,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12056 states to 12056 states and 20617 transitions. [2022-01-10 06:17:43,240 INFO L78 Accepts]: Start accepts. Automaton has 12056 states and 20617 transitions. Word has length 121 [2022-01-10 06:17:43,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:17:43,240 INFO L470 AbstractCegarLoop]: Abstraction has 12056 states and 20617 transitions. [2022-01-10 06:17:43,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:17:43,240 INFO L276 IsEmpty]: Start isEmpty. Operand 12056 states and 20617 transitions. [2022-01-10 06:17:43,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 06:17:43,242 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:17:43,242 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:17:43,270 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 06:17:43,453 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 06:17:43,454 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:17:43,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:17:43,454 INFO L85 PathProgramCache]: Analyzing trace with hash -41469037, now seen corresponding path program 1 times [2022-01-10 06:17:43,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:17:43,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582124335] [2022-01-10 06:17:43,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:17:43,455 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:17:43,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:17:43,456 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 06:17:43,462 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 06:17:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:17:43,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:17:43,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:17:44,062 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-10 06:17:44,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:17:44,071 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:17:44,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582124335] [2022-01-10 06:17:44,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1582124335] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:17:44,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:17:44,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 06:17:44,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843099569] [2022-01-10 06:17:44,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:17:44,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:17:44,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:17:44,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:17:44,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:17:44,081 INFO L87 Difference]: Start difference. First operand 12056 states and 20617 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-01-10 06:17:46,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:17:46,475 INFO L93 Difference]: Finished difference Result 42970 states and 82454 transitions. [2022-01-10 06:17:46,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:17:46,476 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 131 [2022-01-10 06:17:46,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:17:46,674 INFO L225 Difference]: With dead ends: 42970 [2022-01-10 06:17:46,674 INFO L226 Difference]: Without dead ends: 30932 [2022-01-10 06:17:46,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:17:46,856 INFO L933 BasicCegarLoop]: 1132 mSDtfsCounter, 1155 mSDsluCounter, 3834 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 4966 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 06:17:46,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1220 Valid, 4966 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 06:17:46,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30932 states. [2022-01-10 06:17:47,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30932 to 24172. [2022-01-10 06:17:47,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24172 states, 18796 states have (on average 1.584220046818472) internal successors, (29777), 19438 states have internal predecessors, (29777), 4181 states have call successors, (4181), 1203 states have call predecessors, (4181), 1194 states have return successors, (9318), 4138 states have call predecessors, (9318), 4131 states have call successors, (9318) [2022-01-10 06:17:48,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24172 states to 24172 states and 43276 transitions. [2022-01-10 06:17:48,282 INFO L78 Accepts]: Start accepts. Automaton has 24172 states and 43276 transitions. Word has length 131 [2022-01-10 06:17:48,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:17:48,282 INFO L470 AbstractCegarLoop]: Abstraction has 24172 states and 43276 transitions. [2022-01-10 06:17:48,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-01-10 06:17:48,282 INFO L276 IsEmpty]: Start isEmpty. Operand 24172 states and 43276 transitions. [2022-01-10 06:17:48,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 06:17:48,284 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:17:48,286 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:17:48,311 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 06:17:48,518 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 06:17:48,520 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:17:48,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:17:48,520 INFO L85 PathProgramCache]: Analyzing trace with hash 2085856399, now seen corresponding path program 1 times [2022-01-10 06:17:48,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:17:48,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142915692] [2022-01-10 06:17:48,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:17:48,521 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:17:48,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:17:48,532 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 06:17:48,557 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 06:17:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:17:48,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:17:48,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:17:49,018 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-10 06:17:49,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:17:49,019 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:17:49,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142915692] [2022-01-10 06:17:49,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142915692] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:17:49,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:17:49,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:17:49,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406978112] [2022-01-10 06:17:49,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:17:49,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:17:49,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:17:49,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:17:49,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:17:49,021 INFO L87 Difference]: Start difference. First operand 24172 states and 43276 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-01-10 06:17:50,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:17:50,880 INFO L93 Difference]: Finished difference Result 48458 states and 88641 transitions. [2022-01-10 06:17:50,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:17:50,882 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 132 [2022-01-10 06:17:50,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:17:51,134 INFO L225 Difference]: With dead ends: 48458 [2022-01-10 06:17:51,135 INFO L226 Difference]: Without dead ends: 24304 [2022-01-10 06:17:51,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:17:51,560 INFO L933 BasicCegarLoop]: 962 mSDtfsCounter, 645 mSDsluCounter, 1796 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 2758 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 06:17:51,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [655 Valid, 2758 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 06:17:51,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24304 states. [2022-01-10 06:17:52,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24304 to 24236. [2022-01-10 06:17:52,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24236 states, 18844 states have (on average 1.5827319040543408) internal successors, (29825), 19486 states have internal predecessors, (29825), 4181 states have call successors, (4181), 1219 states have call predecessors, (4181), 1210 states have return successors, (9318), 4138 states have call predecessors, (9318), 4131 states have call successors, (9318) [2022-01-10 06:17:52,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24236 states to 24236 states and 43324 transitions. [2022-01-10 06:17:52,976 INFO L78 Accepts]: Start accepts. Automaton has 24236 states and 43324 transitions. Word has length 132 [2022-01-10 06:17:52,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:17:52,978 INFO L470 AbstractCegarLoop]: Abstraction has 24236 states and 43324 transitions. [2022-01-10 06:17:52,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-01-10 06:17:52,978 INFO L276 IsEmpty]: Start isEmpty. Operand 24236 states and 43324 transitions. [2022-01-10 06:17:52,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-10 06:17:52,995 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:17:52,996 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:17:53,010 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 06:17:53,207 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 06:17:53,208 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:17:53,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:17:53,208 INFO L85 PathProgramCache]: Analyzing trace with hash -46204500, now seen corresponding path program 1 times [2022-01-10 06:17:53,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:17:53,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145439698] [2022-01-10 06:17:53,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:17:53,209 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:17:53,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:17:53,218 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 06:17:53,219 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 06:17:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:17:53,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:17:53,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:17:53,657 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-10 06:17:53,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:17:53,657 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:17:53,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145439698] [2022-01-10 06:17:53,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145439698] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:17:53,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:17:53,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:17:53,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645857656] [2022-01-10 06:17:53,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:17:53,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:17:53,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:17:53,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:17:53,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:17:53,658 INFO L87 Difference]: Start difference. First operand 24236 states and 43324 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-01-10 06:17:55,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:17:55,645 INFO L93 Difference]: Finished difference Result 48602 states and 88737 transitions. [2022-01-10 06:17:55,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:17:55,646 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 133 [2022-01-10 06:17:55,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:17:55,751 INFO L225 Difference]: With dead ends: 48602 [2022-01-10 06:17:55,751 INFO L226 Difference]: Without dead ends: 24384 [2022-01-10 06:17:55,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:17:55,957 INFO L933 BasicCegarLoop]: 963 mSDtfsCounter, 631 mSDsluCounter, 2334 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 3297 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 06:17:55,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [641 Valid, 3297 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 06:17:55,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24384 states. [2022-01-10 06:17:56,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24384 to 24316. [2022-01-10 06:17:56,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24316 states, 18908 states have (on average 1.5807594668923206) internal successors, (29889), 19550 states have internal predecessors, (29889), 4181 states have call successors, (4181), 1235 states have call predecessors, (4181), 1226 states have return successors, (9318), 4138 states have call predecessors, (9318), 4131 states have call successors, (9318) [2022-01-10 06:17:56,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24316 states to 24316 states and 43388 transitions. [2022-01-10 06:17:56,937 INFO L78 Accepts]: Start accepts. Automaton has 24316 states and 43388 transitions. Word has length 133 [2022-01-10 06:17:56,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:17:56,937 INFO L470 AbstractCegarLoop]: Abstraction has 24316 states and 43388 transitions. [2022-01-10 06:17:56,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-01-10 06:17:56,937 INFO L276 IsEmpty]: Start isEmpty. Operand 24316 states and 43388 transitions. [2022-01-10 06:17:56,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:17:56,938 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:17:56,938 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:17:56,950 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 06:17:57,149 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 06:17:57,150 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:17:57,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:17:57,150 INFO L85 PathProgramCache]: Analyzing trace with hash 520665771, now seen corresponding path program 1 times [2022-01-10 06:17:57,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:17:57,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1891369698] [2022-01-10 06:17:57,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:17:57,151 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:17:57,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:17:57,152 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 06:17:57,153 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 06:17:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:17:57,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:17:57,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:17:57,645 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-10 06:17:57,646 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:17:57,646 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:17:57,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1891369698] [2022-01-10 06:17:57,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1891369698] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:17:57,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:17:57,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:17:57,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739100197] [2022-01-10 06:17:57,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:17:57,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:17:57,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:17:57,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:17:57,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:17:57,647 INFO L87 Difference]: Start difference. First operand 24316 states and 43388 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-01-10 06:17:59,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:17:59,655 INFO L93 Difference]: Finished difference Result 48778 states and 88873 transitions. [2022-01-10 06:17:59,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:17:59,658 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 134 [2022-01-10 06:17:59,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:17:59,772 INFO L225 Difference]: With dead ends: 48778 [2022-01-10 06:17:59,773 INFO L226 Difference]: Without dead ends: 24480 [2022-01-10 06:18:00,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:18:00,041 INFO L933 BasicCegarLoop]: 963 mSDtfsCounter, 643 mSDsluCounter, 1796 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 2759 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:00,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [653 Valid, 2759 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 06:18:00,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24480 states. [2022-01-10 06:18:00,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24480 to 24412. [2022-01-10 06:18:00,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24412 states, 18988 states have (on average 1.5783126184958922) internal successors, (29969), 19630 states have internal predecessors, (29969), 4181 states have call successors, (4181), 1251 states have call predecessors, (4181), 1242 states have return successors, (9318), 4138 states have call predecessors, (9318), 4131 states have call successors, (9318) [2022-01-10 06:18:01,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24412 states to 24412 states and 43468 transitions. [2022-01-10 06:18:01,137 INFO L78 Accepts]: Start accepts. Automaton has 24412 states and 43468 transitions. Word has length 134 [2022-01-10 06:18:01,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:01,139 INFO L470 AbstractCegarLoop]: Abstraction has 24412 states and 43468 transitions. [2022-01-10 06:18:01,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-01-10 06:18:01,139 INFO L276 IsEmpty]: Start isEmpty. Operand 24412 states and 43468 transitions. [2022-01-10 06:18:01,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-10 06:18:01,140 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:01,140 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:01,151 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 06:18:01,351 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 06:18:01,351 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:01,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:01,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1144943608, now seen corresponding path program 1 times [2022-01-10 06:18:01,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:01,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [7296081] [2022-01-10 06:18:01,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:01,352 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:01,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:01,353 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 06:18:01,355 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 06:18:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:01,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:18:01,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:01,808 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-10 06:18:01,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:01,808 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:01,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [7296081] [2022-01-10 06:18:01,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [7296081] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:01,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:01,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:18:01,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341913686] [2022-01-10 06:18:01,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:01,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:18:01,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:01,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:18:01,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:18:01,809 INFO L87 Difference]: Start difference. First operand 24412 states and 43468 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-01-10 06:18:03,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:03,783 INFO L93 Difference]: Finished difference Result 48986 states and 89045 transitions. [2022-01-10 06:18:03,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:18:03,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 135 [2022-01-10 06:18:03,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:03,921 INFO L225 Difference]: With dead ends: 48986 [2022-01-10 06:18:03,922 INFO L226 Difference]: Without dead ends: 24592 [2022-01-10 06:18:04,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:18:04,250 INFO L933 BasicCegarLoop]: 963 mSDtfsCounter, 643 mSDsluCounter, 1796 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 2759 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:04,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [653 Valid, 2759 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 06:18:04,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24592 states. [2022-01-10 06:18:04,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24592 to 24524. [2022-01-10 06:18:04,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24524 states, 19084 states have (on average 1.575403479354433) internal successors, (30065), 19726 states have internal predecessors, (30065), 4181 states have call successors, (4181), 1267 states have call predecessors, (4181), 1258 states have return successors, (9318), 4138 states have call predecessors, (9318), 4131 states have call successors, (9318) [2022-01-10 06:18:05,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24524 states to 24524 states and 43564 transitions. [2022-01-10 06:18:05,182 INFO L78 Accepts]: Start accepts. Automaton has 24524 states and 43564 transitions. Word has length 135 [2022-01-10 06:18:05,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:05,182 INFO L470 AbstractCegarLoop]: Abstraction has 24524 states and 43564 transitions. [2022-01-10 06:18:05,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-01-10 06:18:05,182 INFO L276 IsEmpty]: Start isEmpty. Operand 24524 states and 43564 transitions. [2022-01-10 06:18:05,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-10 06:18:05,183 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:05,183 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:05,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-01-10 06:18:05,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:18:05,395 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:05,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:05,395 INFO L85 PathProgramCache]: Analyzing trace with hash 997021895, now seen corresponding path program 1 times [2022-01-10 06:18:05,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:05,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [736762049] [2022-01-10 06:18:05,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:05,396 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:05,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:05,397 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:18:05,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 06:18:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:05,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:18:05,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:05,818 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-10 06:18:05,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:05,818 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:05,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [736762049] [2022-01-10 06:18:05,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [736762049] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:05,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:05,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:05,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118395642] [2022-01-10 06:18:05,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:05,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:05,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:05,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:05,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:05,820 INFO L87 Difference]: Start difference. First operand 24524 states and 43564 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-01-10 06:18:07,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:07,556 INFO L93 Difference]: Finished difference Result 47868 states and 89137 transitions. [2022-01-10 06:18:07,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:07,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 136 [2022-01-10 06:18:07,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:07,767 INFO L225 Difference]: With dead ends: 47868 [2022-01-10 06:18:07,767 INFO L226 Difference]: Without dead ends: 29374 [2022-01-10 06:18:07,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:18:07,879 INFO L933 BasicCegarLoop]: 930 mSDtfsCounter, 163 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 2669 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:07,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 2669 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:18:07,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29374 states. [2022-01-10 06:18:08,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29374 to 24620. [2022-01-10 06:18:08,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24620 states, 19180 states have (on average 1.5725234619395203) internal successors, (30161), 19822 states have internal predecessors, (30161), 4181 states have call successors, (4181), 1267 states have call predecessors, (4181), 1258 states have return successors, (9318), 4138 states have call predecessors, (9318), 4131 states have call successors, (9318) [2022-01-10 06:18:09,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24620 states to 24620 states and 43660 transitions. [2022-01-10 06:18:09,226 INFO L78 Accepts]: Start accepts. Automaton has 24620 states and 43660 transitions. Word has length 136 [2022-01-10 06:18:09,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:09,226 INFO L470 AbstractCegarLoop]: Abstraction has 24620 states and 43660 transitions. [2022-01-10 06:18:09,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-01-10 06:18:09,226 INFO L276 IsEmpty]: Start isEmpty. Operand 24620 states and 43660 transitions. [2022-01-10 06:18:09,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 06:18:09,234 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:09,234 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:09,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-01-10 06:18:09,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:18:09,439 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:09,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:09,440 INFO L85 PathProgramCache]: Analyzing trace with hash -2107224271, now seen corresponding path program 1 times [2022-01-10 06:18:09,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:09,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [103522781] [2022-01-10 06:18:09,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:09,440 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:09,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:09,441 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:18:09,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 06:18:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:09,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 876 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:18:09,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:09,853 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-10 06:18:09,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:09,853 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:09,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [103522781] [2022-01-10 06:18:09,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [103522781] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:09,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:09,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 06:18:09,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184241589] [2022-01-10 06:18:09,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:09,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:18:09,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:09,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:18:09,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:18:09,855 INFO L87 Difference]: Start difference. First operand 24620 states and 43660 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-01-10 06:18:13,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:13,575 INFO L93 Difference]: Finished difference Result 81942 states and 158802 transitions. [2022-01-10 06:18:13,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:18:13,577 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 143 [2022-01-10 06:18:13,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:14,123 INFO L225 Difference]: With dead ends: 81942 [2022-01-10 06:18:14,123 INFO L226 Difference]: Without dead ends: 57340 [2022-01-10 06:18:14,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:18:14,371 INFO L933 BasicCegarLoop]: 1297 mSDtfsCounter, 965 mSDsluCounter, 4132 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 5429 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:14,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [997 Valid, 5429 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 06:18:14,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57340 states. [2022-01-10 06:18:16,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57340 to 56420. [2022-01-10 06:18:16,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56420 states, 41900 states have (on average 1.5608114558472554) internal successors, (65398), 44046 states have internal predecessors, (65398), 11909 states have call successors, (11909), 2531 states have call predecessors, (11909), 2610 states have return successors, (30071), 11874 states have call predecessors, (30071), 11811 states have call successors, (30071) [2022-01-10 06:18:18,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56420 states to 56420 states and 107378 transitions. [2022-01-10 06:18:18,191 INFO L78 Accepts]: Start accepts. Automaton has 56420 states and 107378 transitions. Word has length 143 [2022-01-10 06:18:18,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:18,191 INFO L470 AbstractCegarLoop]: Abstraction has 56420 states and 107378 transitions. [2022-01-10 06:18:18,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-01-10 06:18:18,191 INFO L276 IsEmpty]: Start isEmpty. Operand 56420 states and 107378 transitions. [2022-01-10 06:18:18,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 06:18:18,194 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:18,194 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:18,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-01-10 06:18:18,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:18:18,406 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:18,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:18,406 INFO L85 PathProgramCache]: Analyzing trace with hash 487002546, now seen corresponding path program 1 times [2022-01-10 06:18:18,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:18,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1256716787] [2022-01-10 06:18:18,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:18,407 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:18,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:18,408 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:18:18,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 06:18:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:18,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 876 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:18:18,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:18,948 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-10 06:18:18,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:18,948 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:18,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1256716787] [2022-01-10 06:18:18,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1256716787] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:18,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:18,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:18:18,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466520315] [2022-01-10 06:18:18,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:18,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:18:18,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:18,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:18:18,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:18:18,950 INFO L87 Difference]: Start difference. First operand 56420 states and 107378 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-01-10 06:18:24,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:24,084 INFO L93 Difference]: Finished difference Result 108712 states and 208896 transitions. [2022-01-10 06:18:24,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:18:24,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 143 [2022-01-10 06:18:24,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:24,429 INFO L225 Difference]: With dead ends: 108712 [2022-01-10 06:18:24,429 INFO L226 Difference]: Without dead ends: 52180 [2022-01-10 06:18:25,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:18:25,345 INFO L933 BasicCegarLoop]: 962 mSDtfsCounter, 632 mSDsluCounter, 2069 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 3031 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:25,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [642 Valid, 3031 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 06:18:25,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52180 states. [2022-01-10 06:18:27,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52180 to 52112. [2022-01-10 06:18:27,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52112 states, 38876 states have (on average 1.57557361868505) internal successors, (61252), 40814 states have internal predecessors, (61252), 10803 states have call successors, (10803), 2305 states have call predecessors, (10803), 2432 states have return successors, (24868), 10832 states have call predecessors, (24868), 10705 states have call successors, (24868)