/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec9_product09.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:18:12,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:18:12,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:18:13,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:18:13,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:18:13,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:18:13,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:18:13,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:18:13,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:18:13,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:18:13,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:18:13,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:18:13,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:18:13,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:18:13,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:18:13,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:18:13,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:18:13,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:18:13,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:18:13,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:18:13,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:18:13,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:18:13,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:18:13,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:18:13,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:18:13,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:18:13,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:18:13,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:18:13,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:18:13,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:18:13,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:18:13,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:18:13,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:18:13,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:18:13,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:18:13,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:18:13,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:18:13,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:18:13,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:18:13,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:18:13,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:18:13,061 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 06:18:13,083 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:18:13,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:18:13,084 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:18:13,084 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:18:13,084 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:18:13,084 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:18:13,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:18:13,085 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:18:13,085 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:18:13,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:18:13,085 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:18:13,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:18:13,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:18:13,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:18:13,085 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:18:13,085 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:18:13,086 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:18:13,086 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:18:13,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:18:13,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:18:13,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:18:13,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:18:13,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:18:13,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:18:13,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:18:13,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:18:13,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:18:13,087 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:18:13,087 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:18:13,087 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:18:13,087 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:18:13,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:18:13,087 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:18:13,087 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:18:13,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:18:13,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:18:13,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:18:13,292 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:18:13,292 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:18:13,293 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product09.cil.c [2022-01-10 06:18:13,357 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b65a5f601/7d1a807bd64e4cdfbdf868bb5ed638eb/FLAG19a4e2fa5 [2022-01-10 06:18:13,768 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:18:13,768 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product09.cil.c [2022-01-10 06:18:13,787 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b65a5f601/7d1a807bd64e4cdfbdf868bb5ed638eb/FLAG19a4e2fa5 [2022-01-10 06:18:14,126 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b65a5f601/7d1a807bd64e4cdfbdf868bb5ed638eb [2022-01-10 06:18:14,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:18:14,132 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:18:14,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:18:14,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:18:14,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:18:14,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:18:14" (1/1) ... [2022-01-10 06:18:14,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32b42f4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:14, skipping insertion in model container [2022-01-10 06:18:14,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:18:14" (1/1) ... [2022-01-10 06:18:14,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:18:14,176 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:18:14,518 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product09.cil.c[70349,70362] [2022-01-10 06:18:14,520 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:18:14,531 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 06:18:14,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:18:14,656 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product09.cil.c[70349,70362] [2022-01-10 06:18:14,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:18:14,664 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:18:14,728 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product09.cil.c[70349,70362] [2022-01-10 06:18:14,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:18:14,747 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:18:14,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:14 WrapperNode [2022-01-10 06:18:14,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:18:14,749 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:18:14,749 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:18:14,749 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:18:14,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:14" (1/1) ... [2022-01-10 06:18:14,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:14" (1/1) ... [2022-01-10 06:18:14,819 INFO L137 Inliner]: procedures = 91, calls = 327, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 733 [2022-01-10 06:18:14,820 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:18:14,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:18:14,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:18:14,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:18:14,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:14" (1/1) ... [2022-01-10 06:18:14,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:14" (1/1) ... [2022-01-10 06:18:14,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:14" (1/1) ... [2022-01-10 06:18:14,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:14" (1/1) ... [2022-01-10 06:18:14,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:14" (1/1) ... [2022-01-10 06:18:14,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:14" (1/1) ... [2022-01-10 06:18:14,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:14" (1/1) ... [2022-01-10 06:18:14,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:18:14,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:18:14,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:18:14,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:18:14,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:14" (1/1) ... [2022-01-10 06:18:14,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:18:14,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:18:14,957 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 06:18:14,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 06:18:14,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:18:14,983 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-01-10 06:18:14,983 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-01-10 06:18:14,984 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-01-10 06:18:14,984 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-01-10 06:18:14,984 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-01-10 06:18:14,984 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-01-10 06:18:14,984 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-01-10 06:18:14,984 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-01-10 06:18:14,984 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-01-10 06:18:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-01-10 06:18:14,985 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-01-10 06:18:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-01-10 06:18:14,985 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-01-10 06:18:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-01-10 06:18:14,985 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-01-10 06:18:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-01-10 06:18:14,985 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-01-10 06:18:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-01-10 06:18:14,985 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-01-10 06:18:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-01-10 06:18:14,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:18:14,985 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-01-10 06:18:14,986 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-01-10 06:18:14,986 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-01-10 06:18:14,986 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-01-10 06:18:14,986 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-01-10 06:18:14,986 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-01-10 06:18:14,986 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-01-10 06:18:14,986 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-01-10 06:18:14,986 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-01-10 06:18:14,986 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-01-10 06:18:14,986 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2022-01-10 06:18:14,986 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2022-01-10 06:18:14,986 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-01-10 06:18:14,986 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-01-10 06:18:14,987 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-01-10 06:18:14,987 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-01-10 06:18:14,987 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-01-10 06:18:14,987 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-01-10 06:18:14,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:18:14,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:18:14,987 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-01-10 06:18:14,987 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-01-10 06:18:15,105 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:18:15,106 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:18:15,816 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:18:15,829 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:18:15,829 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 06:18:15,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:18:15 BoogieIcfgContainer [2022-01-10 06:18:15,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:18:15,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:18:15,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:18:15,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:18:15,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:18:14" (1/3) ... [2022-01-10 06:18:15,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@167aa2d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:18:15, skipping insertion in model container [2022-01-10 06:18:15,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:14" (2/3) ... [2022-01-10 06:18:15,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@167aa2d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:18:15, skipping insertion in model container [2022-01-10 06:18:15,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:18:15" (3/3) ... [2022-01-10 06:18:15,842 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product09.cil.c [2022-01-10 06:18:15,846 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:18:15,846 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:18:15,892 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:18:15,898 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 06:18:15,898 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:18:15,931 INFO L276 IsEmpty]: Start isEmpty. Operand has 517 states, 412 states have (on average 1.720873786407767) internal successors, (709), 433 states have internal predecessors, (709), 83 states have call successors, (83), 20 states have call predecessors, (83), 20 states have return successors, (83), 77 states have call predecessors, (83), 83 states have call successors, (83) [2022-01-10 06:18:15,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 06:18:15,946 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:15,947 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:15,947 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:15,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:15,951 INFO L85 PathProgramCache]: Analyzing trace with hash 174502393, now seen corresponding path program 1 times [2022-01-10 06:18:15,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:15,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1948888281] [2022-01-10 06:18:15,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:15,962 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:15,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:15,964 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:18:15,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 06:18:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:16,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 06:18:16,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:16,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:18:16,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:16,485 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:16,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1948888281] [2022-01-10 06:18:16,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1948888281] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:16,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:16,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:18:16,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137374087] [2022-01-10 06:18:16,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:16,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 06:18:16,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:16,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 06:18:16,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:18:16,521 INFO L87 Difference]: Start difference. First operand has 517 states, 412 states have (on average 1.720873786407767) internal successors, (709), 433 states have internal predecessors, (709), 83 states have call successors, (83), 20 states have call predecessors, (83), 20 states have return successors, (83), 77 states have call predecessors, (83), 83 states have call successors, (83) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-01-10 06:18:16,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:16,576 INFO L93 Difference]: Finished difference Result 538 states and 905 transitions. [2022-01-10 06:18:16,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 06:18:16,581 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 76 [2022-01-10 06:18:16,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:16,597 INFO L225 Difference]: With dead ends: 538 [2022-01-10 06:18:16,598 INFO L226 Difference]: Without dead ends: 509 [2022-01-10 06:18:16,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:18:16,603 INFO L933 BasicCegarLoop]: 866 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:16,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:18:16,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-01-10 06:18:16,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 509. [2022-01-10 06:18:16,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 406 states have (on average 1.7192118226600985) internal successors, (698), 425 states have internal predecessors, (698), 83 states have call successors, (83), 20 states have call predecessors, (83), 19 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2022-01-10 06:18:16,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 859 transitions. [2022-01-10 06:18:16,674 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 859 transitions. Word has length 76 [2022-01-10 06:18:16,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:16,675 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 859 transitions. [2022-01-10 06:18:16,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-01-10 06:18:16,676 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 859 transitions. [2022-01-10 06:18:16,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 06:18:16,679 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:16,679 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:16,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 06:18:16,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:18:16,888 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:16,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:16,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1646554381, now seen corresponding path program 1 times [2022-01-10 06:18:16,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:16,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614605751] [2022-01-10 06:18:16,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:16,890 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:16,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:16,892 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:18:16,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 06:18:17,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:17,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:17,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:17,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:18:17,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:17,259 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:17,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614605751] [2022-01-10 06:18:17,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1614605751] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:17,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:17,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:17,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474661860] [2022-01-10 06:18:17,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:17,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:17,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:17,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:17,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:17,262 INFO L87 Difference]: Start difference. First operand 509 states and 859 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:18:17,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:17,346 INFO L93 Difference]: Finished difference Result 1000 states and 1694 transitions. [2022-01-10 06:18:17,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:17,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 78 [2022-01-10 06:18:17,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:17,350 INFO L225 Difference]: With dead ends: 1000 [2022-01-10 06:18:17,350 INFO L226 Difference]: Without dead ends: 509 [2022-01-10 06:18:17,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 75 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 06:18:17,355 INFO L933 BasicCegarLoop]: 846 mSDtfsCounter, 14 mSDsluCounter, 1687 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2533 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:17,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 2533 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:18:17,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-01-10 06:18:17,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 509. [2022-01-10 06:18:17,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 406 states have (on average 1.7167487684729064) internal successors, (697), 425 states have internal predecessors, (697), 83 states have call successors, (83), 20 states have call predecessors, (83), 19 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2022-01-10 06:18:17,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 858 transitions. [2022-01-10 06:18:17,386 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 858 transitions. Word has length 78 [2022-01-10 06:18:17,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:17,386 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 858 transitions. [2022-01-10 06:18:17,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:18:17,387 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 858 transitions. [2022-01-10 06:18:17,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 06:18:17,389 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:17,389 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:17,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 06:18:17,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:18:17,604 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:17,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:17,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1642344689, now seen corresponding path program 1 times [2022-01-10 06:18:17,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:17,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157313979] [2022-01-10 06:18:17,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:17,605 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:17,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:17,608 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:18:17,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 06:18:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:17,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:17,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:17,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:18:17,942 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:17,943 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:17,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157313979] [2022-01-10 06:18:17,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [157313979] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:17,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:17,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:17,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711546790] [2022-01-10 06:18:17,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:17,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:17,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:17,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:17,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:17,948 INFO L87 Difference]: Start difference. First operand 509 states and 858 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:18:18,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:18,002 INFO L93 Difference]: Finished difference Result 1000 states and 1693 transitions. [2022-01-10 06:18:18,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:18,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 79 [2022-01-10 06:18:18,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:18,006 INFO L225 Difference]: With dead ends: 1000 [2022-01-10 06:18:18,006 INFO L226 Difference]: Without dead ends: 509 [2022-01-10 06:18:18,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 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 06:18:18,008 INFO L933 BasicCegarLoop]: 846 mSDtfsCounter, 12 mSDsluCounter, 1687 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2533 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:18,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 2533 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:18:18,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-01-10 06:18:18,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 509. [2022-01-10 06:18:18,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 406 states have (on average 1.7142857142857142) internal successors, (696), 425 states have internal predecessors, (696), 83 states have call successors, (83), 20 states have call predecessors, (83), 19 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2022-01-10 06:18:18,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 857 transitions. [2022-01-10 06:18:18,027 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 857 transitions. Word has length 79 [2022-01-10 06:18:18,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:18,027 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 857 transitions. [2022-01-10 06:18:18,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:18:18,027 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 857 transitions. [2022-01-10 06:18:18,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 06:18:18,029 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:18,030 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:18,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 06:18:18,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:18:18,248 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:18,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:18,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1982935607, now seen corresponding path program 1 times [2022-01-10 06:18:18,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:18,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295085943] [2022-01-10 06:18:18,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:18,249 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:18,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:18,251 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:18:18,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 06:18:18,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:18,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:18,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:18,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:18:18,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:18,603 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:18,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295085943] [2022-01-10 06:18:18,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [295085943] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:18,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:18,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:18,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300792473] [2022-01-10 06:18:18,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:18,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:18,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:18,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:18,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:18,605 INFO L87 Difference]: Start difference. First operand 509 states and 857 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:18:18,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:18,653 INFO L93 Difference]: Finished difference Result 1000 states and 1692 transitions. [2022-01-10 06:18:18,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:18,654 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 80 [2022-01-10 06:18:18,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:18,658 INFO L225 Difference]: With dead ends: 1000 [2022-01-10 06:18:18,658 INFO L226 Difference]: Without dead ends: 509 [2022-01-10 06:18:18,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 06:18:18,665 INFO L933 BasicCegarLoop]: 846 mSDtfsCounter, 10 mSDsluCounter, 1687 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2533 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:18,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2533 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:18:18,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-01-10 06:18:18,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 509. [2022-01-10 06:18:18,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 406 states have (on average 1.7118226600985222) internal successors, (695), 425 states have internal predecessors, (695), 83 states have call successors, (83), 20 states have call predecessors, (83), 19 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2022-01-10 06:18:18,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 856 transitions. [2022-01-10 06:18:18,691 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 856 transitions. Word has length 80 [2022-01-10 06:18:18,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:18,693 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 856 transitions. [2022-01-10 06:18:18,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:18:18,693 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 856 transitions. [2022-01-10 06:18:18,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 06:18:18,696 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:18,696 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:18,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 06:18:18,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:18:18,907 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:18,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:18,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1120287029, now seen corresponding path program 1 times [2022-01-10 06:18:18,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:18,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436706045] [2022-01-10 06:18:18,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:18,908 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:18,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:18,909 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:18:18,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 06:18:19,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:19,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:19,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:19,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:18:19,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:19,221 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:19,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436706045] [2022-01-10 06:18:19,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1436706045] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:19,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:19,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:19,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759957493] [2022-01-10 06:18:19,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:19,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:19,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:19,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:19,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:19,225 INFO L87 Difference]: Start difference. First operand 509 states and 856 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, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:18:19,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:19,260 INFO L93 Difference]: Finished difference Result 1000 states and 1691 transitions. [2022-01-10 06:18:19,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:19,261 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, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 81 [2022-01-10 06:18:19,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:19,264 INFO L225 Difference]: With dead ends: 1000 [2022-01-10 06:18:19,264 INFO L226 Difference]: Without dead ends: 509 [2022-01-10 06:18:19,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 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 06:18:19,268 INFO L933 BasicCegarLoop]: 846 mSDtfsCounter, 8 mSDsluCounter, 1687 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2533 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:19,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 2533 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:18:19,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-01-10 06:18:19,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 509. [2022-01-10 06:18:19,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 406 states have (on average 1.70935960591133) internal successors, (694), 425 states have internal predecessors, (694), 83 states have call successors, (83), 20 states have call predecessors, (83), 19 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2022-01-10 06:18:19,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 855 transitions. [2022-01-10 06:18:19,283 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 855 transitions. Word has length 81 [2022-01-10 06:18:19,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:19,284 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 855 transitions. [2022-01-10 06:18:19,284 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, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:18:19,284 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 855 transitions. [2022-01-10 06:18:19,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 06:18:19,286 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:19,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:19,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 06:18:19,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:18:19,498 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:19,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:19,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1611919739, now seen corresponding path program 1 times [2022-01-10 06:18:19,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:19,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883541640] [2022-01-10 06:18:19,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:19,500 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:19,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:19,501 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:18:19,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 06:18:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:19,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:19,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:19,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:18:19,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:19,838 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:19,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883541640] [2022-01-10 06:18:19,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883541640] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:19,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:19,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:19,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825652564] [2022-01-10 06:18:19,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:19,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:19,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:19,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:19,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:19,839 INFO L87 Difference]: Start difference. First operand 509 states and 855 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:18:19,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:19,872 INFO L93 Difference]: Finished difference Result 1000 states and 1690 transitions. [2022-01-10 06:18:19,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:19,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 82 [2022-01-10 06:18:19,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:19,875 INFO L225 Difference]: With dead ends: 1000 [2022-01-10 06:18:19,875 INFO L226 Difference]: Without dead ends: 509 [2022-01-10 06:18:19,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 79 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 06:18:19,877 INFO L933 BasicCegarLoop]: 846 mSDtfsCounter, 6 mSDsluCounter, 1687 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2533 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:19,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 2533 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:18:19,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-01-10 06:18:19,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 509. [2022-01-10 06:18:19,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 406 states have (on average 1.706896551724138) internal successors, (693), 425 states have internal predecessors, (693), 83 states have call successors, (83), 20 states have call predecessors, (83), 19 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2022-01-10 06:18:19,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 854 transitions. [2022-01-10 06:18:19,889 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 854 transitions. Word has length 82 [2022-01-10 06:18:19,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:19,890 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 854 transitions. [2022-01-10 06:18:19,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:18:19,890 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 854 transitions. [2022-01-10 06:18:19,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 06:18:19,892 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:19,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:19,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 06:18:20,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:18:20,106 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:20,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:20,107 INFO L85 PathProgramCache]: Analyzing trace with hash 644900518, now seen corresponding path program 1 times [2022-01-10 06:18:20,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:20,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1966569159] [2022-01-10 06:18:20,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:20,110 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:20,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:20,111 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:18:20,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 06:18:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:20,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:20,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:20,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:18:20,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:20,441 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:20,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1966569159] [2022-01-10 06:18:20,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1966569159] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:20,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:20,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:20,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514100580] [2022-01-10 06:18:20,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:20,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:20,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:20,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:20,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:20,442 INFO L87 Difference]: Start difference. First operand 509 states and 854 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:18:20,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:20,470 INFO L93 Difference]: Finished difference Result 1000 states and 1689 transitions. [2022-01-10 06:18:20,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:20,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2022-01-10 06:18:20,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:20,474 INFO L225 Difference]: With dead ends: 1000 [2022-01-10 06:18:20,474 INFO L226 Difference]: Without dead ends: 509 [2022-01-10 06:18:20,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 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 06:18:20,476 INFO L933 BasicCegarLoop]: 846 mSDtfsCounter, 4 mSDsluCounter, 1687 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2533 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:20,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2533 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:18:20,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-01-10 06:18:20,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 509. [2022-01-10 06:18:20,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 406 states have (on average 1.7044334975369457) internal successors, (692), 425 states have internal predecessors, (692), 83 states have call successors, (83), 20 states have call predecessors, (83), 19 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2022-01-10 06:18:20,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 853 transitions. [2022-01-10 06:18:20,488 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 853 transitions. Word has length 83 [2022-01-10 06:18:20,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:20,488 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 853 transitions. [2022-01-10 06:18:20,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:18:20,488 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 853 transitions. [2022-01-10 06:18:20,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 06:18:20,489 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:20,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:20,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 06:18:20,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:18:20,702 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:20,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:20,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1136599417, now seen corresponding path program 1 times [2022-01-10 06:18:20,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:20,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [953377618] [2022-01-10 06:18:20,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:20,728 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:20,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:20,729 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:18:20,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 06:18:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:20,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:18:20,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:21,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:18:21,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:21,079 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:21,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [953377618] [2022-01-10 06:18:21,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [953377618] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:21,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:21,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:18:21,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346948890] [2022-01-10 06:18:21,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:21,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:18:21,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:21,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:18:21,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:18:21,080 INFO L87 Difference]: Start difference. First operand 509 states and 853 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 06:18:21,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:21,150 INFO L93 Difference]: Finished difference Result 960 states and 1613 transitions. [2022-01-10 06:18:21,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:18:21,151 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 83 [2022-01-10 06:18:21,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:21,154 INFO L225 Difference]: With dead ends: 960 [2022-01-10 06:18:21,154 INFO L226 Difference]: Without dead ends: 503 [2022-01-10 06:18:21,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:18:21,156 INFO L933 BasicCegarLoop]: 840 mSDtfsCounter, 117 mSDsluCounter, 4107 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 4947 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:21,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 4947 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:18:21,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-01-10 06:18:21,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 503. [2022-01-10 06:18:21,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 400 states have (on average 1.6975) internal successors, (679), 419 states have internal predecessors, (679), 83 states have call successors, (83), 20 states have call predecessors, (83), 19 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2022-01-10 06:18:21,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 840 transitions. [2022-01-10 06:18:21,167 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 840 transitions. Word has length 83 [2022-01-10 06:18:21,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:21,167 INFO L470 AbstractCegarLoop]: Abstraction has 503 states and 840 transitions. [2022-01-10 06:18:21,168 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 06:18:21,168 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 840 transitions. [2022-01-10 06:18:21,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 06:18:21,169 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:21,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:21,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 06:18:21,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:18:21,381 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:21,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:21,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1723549733, now seen corresponding path program 1 times [2022-01-10 06:18:21,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:21,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793804772] [2022-01-10 06:18:21,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:21,381 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:21,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:21,385 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:18:21,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 06:18:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:21,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:21,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:21,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:18:21,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:21,706 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:21,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793804772] [2022-01-10 06:18:21,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793804772] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:21,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:21,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:21,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002571500] [2022-01-10 06:18:21,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:21,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:21,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:21,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:21,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:21,707 INFO L87 Difference]: Start difference. First operand 503 states and 840 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:18:21,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:21,791 INFO L93 Difference]: Finished difference Result 954 states and 1600 transitions. [2022-01-10 06:18:21,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:21,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 84 [2022-01-10 06:18:21,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:21,794 INFO L225 Difference]: With dead ends: 954 [2022-01-10 06:18:21,794 INFO L226 Difference]: Without dead ends: 503 [2022-01-10 06:18:21,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 81 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 06:18:21,796 INFO L933 BasicCegarLoop]: 791 mSDtfsCounter, 90 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 2347 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:21,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 2347 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:18:21,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-01-10 06:18:21,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 503. [2022-01-10 06:18:21,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 400 states have (on average 1.6875) internal successors, (675), 419 states have internal predecessors, (675), 83 states have call successors, (83), 20 states have call predecessors, (83), 19 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2022-01-10 06:18:21,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 836 transitions. [2022-01-10 06:18:21,808 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 836 transitions. Word has length 84 [2022-01-10 06:18:21,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:21,809 INFO L470 AbstractCegarLoop]: Abstraction has 503 states and 836 transitions. [2022-01-10 06:18:21,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:18:21,809 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 836 transitions. [2022-01-10 06:18:21,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 06:18:21,810 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:21,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:21,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-01-10 06:18:22,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:18:22,021 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:22,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:22,022 INFO L85 PathProgramCache]: Analyzing trace with hash -324421718, now seen corresponding path program 1 times [2022-01-10 06:18:22,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:22,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2118179281] [2022-01-10 06:18:22,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:22,022 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:22,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:22,023 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:18:22,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 06:18:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:22,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:22,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:22,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:18:22,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:22,349 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:22,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2118179281] [2022-01-10 06:18:22,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2118179281] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:22,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:22,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:22,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592180203] [2022-01-10 06:18:22,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:22,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:22,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:22,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:22,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:22,350 INFO L87 Difference]: Start difference. First operand 503 states and 836 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:18:22,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:22,437 INFO L93 Difference]: Finished difference Result 954 states and 1596 transitions. [2022-01-10 06:18:22,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:22,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 85 [2022-01-10 06:18:22,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:22,440 INFO L225 Difference]: With dead ends: 954 [2022-01-10 06:18:22,440 INFO L226 Difference]: Without dead ends: 503 [2022-01-10 06:18:22,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 82 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 06:18:22,442 INFO L933 BasicCegarLoop]: 791 mSDtfsCounter, 85 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 2347 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:22,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 2347 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:18:22,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-01-10 06:18:22,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 503. [2022-01-10 06:18:22,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 400 states have (on average 1.6775) internal successors, (671), 419 states have internal predecessors, (671), 83 states have call successors, (83), 20 states have call predecessors, (83), 19 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2022-01-10 06:18:22,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 832 transitions. [2022-01-10 06:18:22,453 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 832 transitions. Word has length 85 [2022-01-10 06:18:22,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:22,453 INFO L470 AbstractCegarLoop]: Abstraction has 503 states and 832 transitions. [2022-01-10 06:18:22,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:18:22,454 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 832 transitions. [2022-01-10 06:18:22,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 06:18:22,455 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:22,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:22,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 06:18:22,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:18:22,666 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:22,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:22,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1500623232, now seen corresponding path program 1 times [2022-01-10 06:18:22,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:22,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [536078153] [2022-01-10 06:18:22,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:22,667 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:22,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:22,669 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:18:22,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 06:18:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:22,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 706 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:22,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:23,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:18:23,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:23,032 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:23,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [536078153] [2022-01-10 06:18:23,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [536078153] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:23,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:23,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:23,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911248495] [2022-01-10 06:18:23,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:23,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:23,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:23,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:23,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:23,033 INFO L87 Difference]: Start difference. First operand 503 states and 832 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:18:23,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:23,112 INFO L93 Difference]: Finished difference Result 954 states and 1592 transitions. [2022-01-10 06:18:23,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:23,112 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 86 [2022-01-10 06:18:23,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:23,115 INFO L225 Difference]: With dead ends: 954 [2022-01-10 06:18:23,115 INFO L226 Difference]: Without dead ends: 503 [2022-01-10 06:18:23,117 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 06:18:23,118 INFO L933 BasicCegarLoop]: 791 mSDtfsCounter, 80 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 2347 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:23,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 2347 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:18:23,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-01-10 06:18:23,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 503. [2022-01-10 06:18:23,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 400 states have (on average 1.6675) internal successors, (667), 419 states have internal predecessors, (667), 83 states have call successors, (83), 20 states have call predecessors, (83), 19 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2022-01-10 06:18:23,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 828 transitions. [2022-01-10 06:18:23,131 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 828 transitions. Word has length 86 [2022-01-10 06:18:23,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:23,131 INFO L470 AbstractCegarLoop]: Abstraction has 503 states and 828 transitions. [2022-01-10 06:18:23,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:18:23,131 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 828 transitions. [2022-01-10 06:18:23,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 06:18:23,133 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:23,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:23,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 06:18:23,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:18:23,344 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:23,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:23,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1456140800, now seen corresponding path program 1 times [2022-01-10 06:18:23,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:23,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149537155] [2022-01-10 06:18:23,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:23,345 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:23,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:23,346 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:18:23,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 06:18:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:23,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:18:23,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:23,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:18:23,707 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:23,707 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:23,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [149537155] [2022-01-10 06:18:23,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [149537155] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:23,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:23,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:18:23,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865802526] [2022-01-10 06:18:23,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:23,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:18:23,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:23,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:18:23,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:18:23,708 INFO L87 Difference]: Start difference. First operand 503 states and 828 transitions. Second operand has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 06:18:23,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:23,778 INFO L93 Difference]: Finished difference Result 954 states and 1588 transitions. [2022-01-10 06:18:23,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:18:23,779 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 86 [2022-01-10 06:18:23,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:23,782 INFO L225 Difference]: With dead ends: 954 [2022-01-10 06:18:23,782 INFO L226 Difference]: Without dead ends: 482 [2022-01-10 06:18:23,786 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 06:18:23,786 INFO L933 BasicCegarLoop]: 816 mSDtfsCounter, 110 mSDsluCounter, 3996 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 4812 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:23,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 4812 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:18:23,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2022-01-10 06:18:23,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2022-01-10 06:18:23,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 379 states have (on average 1.6701846965699207) internal successors, (633), 398 states have internal predecessors, (633), 83 states have call successors, (83), 20 states have call predecessors, (83), 19 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2022-01-10 06:18:23,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 794 transitions. [2022-01-10 06:18:23,798 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 794 transitions. Word has length 86 [2022-01-10 06:18:23,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:23,798 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 794 transitions. [2022-01-10 06:18:23,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 06:18:23,798 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 794 transitions. [2022-01-10 06:18:23,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 06:18:23,800 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:23,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:23,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 06:18:24,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:18:24,011 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:24,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:24,012 INFO L85 PathProgramCache]: Analyzing trace with hash -650776017, now seen corresponding path program 1 times [2022-01-10 06:18:24,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:24,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130879240] [2022-01-10 06:18:24,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:24,012 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:24,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:24,013 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:18:24,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 06:18:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:24,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:24,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:24,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:18:24,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:24,332 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:24,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130879240] [2022-01-10 06:18:24,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130879240] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:24,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:24,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:24,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205596052] [2022-01-10 06:18:24,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:24,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:24,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:24,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:24,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:24,333 INFO L87 Difference]: Start difference. First operand 482 states and 794 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:18:24,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:24,369 INFO L93 Difference]: Finished difference Result 933 states and 1554 transitions. [2022-01-10 06:18:24,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:24,370 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 87 [2022-01-10 06:18:24,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:24,372 INFO L225 Difference]: With dead ends: 933 [2022-01-10 06:18:24,372 INFO L226 Difference]: Without dead ends: 482 [2022-01-10 06:18:24,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 84 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 06:18:24,375 INFO L933 BasicCegarLoop]: 784 mSDtfsCounter, 41 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 2333 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:24,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 2333 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:18:24,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2022-01-10 06:18:24,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2022-01-10 06:18:24,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 379 states have (on average 1.6675461741424802) internal successors, (632), 398 states have internal predecessors, (632), 83 states have call successors, (83), 20 states have call predecessors, (83), 19 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2022-01-10 06:18:24,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 793 transitions. [2022-01-10 06:18:24,388 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 793 transitions. Word has length 87 [2022-01-10 06:18:24,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:24,389 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 793 transitions. [2022-01-10 06:18:24,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:18:24,389 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 793 transitions. [2022-01-10 06:18:24,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 06:18:24,392 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:24,392 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:24,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 06:18:24,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:18:24,602 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:24,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:24,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1517893851, now seen corresponding path program 1 times [2022-01-10 06:18:24,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:24,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1944121526] [2022-01-10 06:18:24,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:24,603 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:24,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:24,604 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:18:24,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 06:18:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:24,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:24,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:24,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:18:24,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:24,904 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:24,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1944121526] [2022-01-10 06:18:24,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1944121526] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:24,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:24,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:24,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421598420] [2022-01-10 06:18:24,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:24,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:24,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:24,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:24,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:24,905 INFO L87 Difference]: Start difference. First operand 482 states and 793 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:18:24,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:24,941 INFO L93 Difference]: Finished difference Result 933 states and 1553 transitions. [2022-01-10 06:18:24,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:24,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 88 [2022-01-10 06:18:24,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:24,945 INFO L225 Difference]: With dead ends: 933 [2022-01-10 06:18:24,945 INFO L226 Difference]: Without dead ends: 482 [2022-01-10 06:18:24,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 85 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 06:18:24,947 INFO L933 BasicCegarLoop]: 784 mSDtfsCounter, 39 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2333 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:24,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 2333 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:18:24,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2022-01-10 06:18:24,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2022-01-10 06:18:24,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 379 states have (on average 1.6649076517150396) internal successors, (631), 398 states have internal predecessors, (631), 83 states have call successors, (83), 20 states have call predecessors, (83), 19 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2022-01-10 06:18:24,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 792 transitions. [2022-01-10 06:18:24,957 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 792 transitions. Word has length 88 [2022-01-10 06:18:24,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:24,957 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 792 transitions. [2022-01-10 06:18:24,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:18:24,958 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 792 transitions. [2022-01-10 06:18:24,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 06:18:24,959 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:24,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:24,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 06:18:25,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:18:25,170 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:25,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:25,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1226993484, now seen corresponding path program 1 times [2022-01-10 06:18:25,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:25,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804729511] [2022-01-10 06:18:25,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:25,171 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:25,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:25,172 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:18:25,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 06:18:25,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:25,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 06:18:25,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:25,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:18:25,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:25,517 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:25,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804729511] [2022-01-10 06:18:25,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804729511] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:25,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:25,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:18:25,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102018840] [2022-01-10 06:18:25,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:25,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:18:25,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:25,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:18:25,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:18:25,519 INFO L87 Difference]: Start difference. First operand 482 states and 792 transitions. Second operand has 8 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 06:18:25,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:25,607 INFO L93 Difference]: Finished difference Result 927 states and 1541 transitions. [2022-01-10 06:18:25,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 06:18:25,607 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 89 [2022-01-10 06:18:25,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:25,609 INFO L225 Difference]: With dead ends: 927 [2022-01-10 06:18:25,609 INFO L226 Difference]: Without dead ends: 482 [2022-01-10 06:18:25,611 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 06:18:25,611 INFO L933 BasicCegarLoop]: 777 mSDtfsCounter, 31 mSDsluCounter, 4640 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 5417 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:25,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 5417 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:18:25,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2022-01-10 06:18:25,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2022-01-10 06:18:25,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 379 states have (on average 1.6622691292875988) internal successors, (630), 398 states have internal predecessors, (630), 83 states have call successors, (83), 20 states have call predecessors, (83), 19 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2022-01-10 06:18:25,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 791 transitions. [2022-01-10 06:18:25,620 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 791 transitions. Word has length 89 [2022-01-10 06:18:25,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:25,621 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 791 transitions. [2022-01-10 06:18:25,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 06:18:25,621 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 791 transitions. [2022-01-10 06:18:25,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 06:18:25,622 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:25,622 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:25,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 06:18:25,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:18:25,833 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:25,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:25,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1031209574, now seen corresponding path program 1 times [2022-01-10 06:18:25,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:25,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366848881] [2022-01-10 06:18:25,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:25,834 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:25,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:25,835 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:18:25,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 06:18:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:26,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 06:18:26,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:26,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:18:26,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:26,295 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:26,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366848881] [2022-01-10 06:18:26,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366848881] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:26,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:26,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 06:18:26,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766027002] [2022-01-10 06:18:26,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:26,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 06:18:26,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:26,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 06:18:26,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-10 06:18:26,297 INFO L87 Difference]: Start difference. First operand 482 states and 791 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 4 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 06:18:28,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:28,156 INFO L93 Difference]: Finished difference Result 1046 states and 1767 transitions. [2022-01-10 06:18:28,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:18:28,157 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 4 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 90 [2022-01-10 06:18:28,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:28,161 INFO L225 Difference]: With dead ends: 1046 [2022-01-10 06:18:28,161 INFO L226 Difference]: Without dead ends: 609 [2022-01-10 06:18:28,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-01-10 06:18:28,163 INFO L933 BasicCegarLoop]: 867 mSDtfsCounter, 1336 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 2498 mSolverCounterSat, 449 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1336 SdHoareTripleChecker+Valid, 2353 SdHoareTripleChecker+Invalid, 2947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 449 IncrementalHoareTripleChecker+Valid, 2498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:28,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1336 Valid, 2353 Invalid, 2947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [449 Valid, 2498 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 06:18:28,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-01-10 06:18:28,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 486. [2022-01-10 06:18:28,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 382 states have (on average 1.6570680628272252) internal successors, (633), 401 states have internal predecessors, (633), 83 states have call successors, (83), 20 states have call predecessors, (83), 20 states have return successors, (94), 77 states have call predecessors, (94), 78 states have call successors, (94) [2022-01-10 06:18:28,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 810 transitions. [2022-01-10 06:18:28,179 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 810 transitions. Word has length 90 [2022-01-10 06:18:28,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:28,179 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 810 transitions. [2022-01-10 06:18:28,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 4 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 06:18:28,179 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 810 transitions. [2022-01-10 06:18:28,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 06:18:28,181 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:28,181 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:28,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 06:18:28,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:18:28,395 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:28,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:28,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1541210082, now seen corresponding path program 1 times [2022-01-10 06:18:28,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:28,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [107771333] [2022-01-10 06:18:28,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:28,396 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:28,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:28,397 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:18:28,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 06:18:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:28,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:18:28,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:28,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:18:28,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:28,754 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:28,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [107771333] [2022-01-10 06:18:28,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [107771333] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:28,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:28,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:18:28,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708310990] [2022-01-10 06:18:28,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:28,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:18:28,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:28,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:18:28,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:18:28,756 INFO L87 Difference]: Start difference. First operand 486 states and 810 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 06:18:31,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:31,925 INFO L93 Difference]: Finished difference Result 1710 states and 2947 transitions. [2022-01-10 06:18:31,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 06:18:31,931 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 91 [2022-01-10 06:18:31,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:31,946 INFO L225 Difference]: With dead ends: 1710 [2022-01-10 06:18:31,946 INFO L226 Difference]: Without dead ends: 1269 [2022-01-10 06:18:31,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2022-01-10 06:18:31,952 INFO L933 BasicCegarLoop]: 1249 mSDtfsCounter, 2187 mSDsluCounter, 1814 mSDsCounter, 0 mSdLazyCounter, 3912 mSolverCounterSat, 603 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2246 SdHoareTripleChecker+Valid, 3063 SdHoareTripleChecker+Invalid, 4515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 603 IncrementalHoareTripleChecker+Valid, 3912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:31,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2246 Valid, 3063 Invalid, 4515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [603 Valid, 3912 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-01-10 06:18:31,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2022-01-10 06:18:31,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1210. [2022-01-10 06:18:31,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 948 states have (on average 1.6708860759493671) internal successors, (1584), 996 states have internal predecessors, (1584), 210 states have call successors, (210), 51 states have call predecessors, (210), 51 states have return successors, (225), 199 states have call predecessors, (225), 205 states have call successors, (225) [2022-01-10 06:18:31,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 2019 transitions. [2022-01-10 06:18:31,995 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 2019 transitions. Word has length 91 [2022-01-10 06:18:31,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:31,996 INFO L470 AbstractCegarLoop]: Abstraction has 1210 states and 2019 transitions. [2022-01-10 06:18:31,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 06:18:31,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 2019 transitions. [2022-01-10 06:18:31,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 06:18:31,997 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:31,997 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:32,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 06:18:32,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:18:32,209 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:32,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:32,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1881146339, now seen corresponding path program 1 times [2022-01-10 06:18:32,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:32,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511945065] [2022-01-10 06:18:32,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:32,209 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:32,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:32,210 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:18:32,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 06:18:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:32,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 06:18:32,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:32,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:18:32,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:32,689 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:32,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511945065] [2022-01-10 06:18:32,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [511945065] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:32,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:32,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:18:32,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645641484] [2022-01-10 06:18:32,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:32,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:18:32,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:32,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:18:32,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:18:32,691 INFO L87 Difference]: Start difference. First operand 1210 states and 2019 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 4 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 06:18:37,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:37,161 INFO L93 Difference]: Finished difference Result 5192 states and 9026 transitions. [2022-01-10 06:18:37,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 06:18:37,162 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 4 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 93 [2022-01-10 06:18:37,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:37,186 INFO L225 Difference]: With dead ends: 5192 [2022-01-10 06:18:37,186 INFO L226 Difference]: Without dead ends: 4027 [2022-01-10 06:18:37,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-01-10 06:18:37,195 INFO L933 BasicCegarLoop]: 1537 mSDtfsCounter, 2842 mSDsluCounter, 2055 mSDsCounter, 0 mSdLazyCounter, 5386 mSolverCounterSat, 1059 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2955 SdHoareTripleChecker+Valid, 3592 SdHoareTripleChecker+Invalid, 6445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1059 IncrementalHoareTripleChecker+Valid, 5386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:37,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2955 Valid, 3592 Invalid, 6445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1059 Valid, 5386 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-01-10 06:18:37,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4027 states. [2022-01-10 06:18:37,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4027 to 2830. [2022-01-10 06:18:37,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2830 states, 2109 states have (on average 1.6543385490753912) internal successors, (3489), 2255 states have internal predecessors, (3489), 612 states have call successors, (612), 97 states have call predecessors, (612), 108 states have return successors, (739), 599 states have call predecessors, (739), 607 states have call successors, (739) [2022-01-10 06:18:37,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2830 states to 2830 states and 4840 transitions. [2022-01-10 06:18:37,303 INFO L78 Accepts]: Start accepts. Automaton has 2830 states and 4840 transitions. Word has length 93 [2022-01-10 06:18:37,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:37,303 INFO L470 AbstractCegarLoop]: Abstraction has 2830 states and 4840 transitions. [2022-01-10 06:18:37,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 4 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 06:18:37,304 INFO L276 IsEmpty]: Start isEmpty. Operand 2830 states and 4840 transitions. [2022-01-10 06:18:37,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 06:18:37,305 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:37,305 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:37,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 06:18:37,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:18:37,515 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:37,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:37,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1990174235, now seen corresponding path program 1 times [2022-01-10 06:18:37,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:37,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444592668] [2022-01-10 06:18:37,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:37,516 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:37,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:37,518 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:18:37,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 06:18:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:37,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:18:37,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:37,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:18:37,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:37,881 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:37,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444592668] [2022-01-10 06:18:37,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444592668] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:37,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:37,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:18:37,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850099827] [2022-01-10 06:18:37,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:37,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:18:37,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:37,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:18:37,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:18:37,882 INFO L87 Difference]: Start difference. First operand 2830 states and 4840 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 06:18:40,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:40,386 INFO L93 Difference]: Finished difference Result 7500 states and 12906 transitions. [2022-01-10 06:18:40,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 06:18:40,387 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 93 [2022-01-10 06:18:40,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:40,429 INFO L225 Difference]: With dead ends: 7500 [2022-01-10 06:18:40,430 INFO L226 Difference]: Without dead ends: 5482 [2022-01-10 06:18:40,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2022-01-10 06:18:40,442 INFO L933 BasicCegarLoop]: 977 mSDtfsCounter, 2453 mSDsluCounter, 1370 mSDsCounter, 0 mSdLazyCounter, 2752 mSolverCounterSat, 507 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2512 SdHoareTripleChecker+Valid, 2347 SdHoareTripleChecker+Invalid, 3259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 507 IncrementalHoareTripleChecker+Valid, 2752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:40,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2512 Valid, 2347 Invalid, 3259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [507 Valid, 2752 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 06:18:40,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5482 states. [2022-01-10 06:18:40,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5482 to 5203. [2022-01-10 06:18:40,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 3904 states have (on average 1.6547131147540983) internal successors, (6460), 4171 states have internal predecessors, (6460), 1080 states have call successors, (1080), 177 states have call predecessors, (1080), 218 states have return successors, (1382), 1058 states have call predecessors, (1382), 1075 states have call successors, (1382) [2022-01-10 06:18:40,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 8922 transitions. [2022-01-10 06:18:40,649 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 8922 transitions. Word has length 93 [2022-01-10 06:18:40,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:40,649 INFO L470 AbstractCegarLoop]: Abstraction has 5203 states and 8922 transitions. [2022-01-10 06:18:40,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 06:18:40,650 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 8922 transitions. [2022-01-10 06:18:40,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 06:18:40,651 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:40,651 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:40,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 06:18:40,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:18:40,862 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:40,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:40,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1794936162, now seen corresponding path program 1 times [2022-01-10 06:18:40,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:40,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712926074] [2022-01-10 06:18:40,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:40,863 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:40,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:40,864 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:18:40,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 06:18:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:41,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 06:18:41,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:41,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:18:41,340 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:41,340 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:41,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712926074] [2022-01-10 06:18:41,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712926074] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:41,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:41,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 06:18:41,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94580569] [2022-01-10 06:18:41,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:41,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 06:18:41,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:41,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 06:18:41,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 06:18:41,341 INFO L87 Difference]: Start difference. First operand 5203 states and 8922 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 8 states have internal predecessors, (77), 5 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2022-01-10 06:18:44,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:44,564 INFO L93 Difference]: Finished difference Result 10449 states and 17892 transitions. [2022-01-10 06:18:44,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 06:18:44,565 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 8 states have internal predecessors, (77), 5 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 98 [2022-01-10 06:18:44,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:44,598 INFO L225 Difference]: With dead ends: 10449 [2022-01-10 06:18:44,598 INFO L226 Difference]: Without dead ends: 6058 [2022-01-10 06:18:44,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-01-10 06:18:44,619 INFO L933 BasicCegarLoop]: 878 mSDtfsCounter, 1871 mSDsluCounter, 1990 mSDsCounter, 0 mSdLazyCounter, 4489 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1932 SdHoareTripleChecker+Valid, 2868 SdHoareTripleChecker+Invalid, 4932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 4489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:44,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1932 Valid, 2868 Invalid, 4932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 4489 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-10 06:18:44,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6058 states. [2022-01-10 06:18:44,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6058 to 5701. [2022-01-10 06:18:44,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5701 states, 4266 states have (on average 1.6296296296296295) internal successors, (6952), 4563 states have internal predecessors, (6952), 1164 states have call successors, (1164), 217 states have call predecessors, (1164), 270 states have return successors, (1544), 1124 states have call predecessors, (1544), 1159 states have call successors, (1544) [2022-01-10 06:18:44,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5701 states to 5701 states and 9660 transitions. [2022-01-10 06:18:44,849 INFO L78 Accepts]: Start accepts. Automaton has 5701 states and 9660 transitions. Word has length 98 [2022-01-10 06:18:44,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:44,849 INFO L470 AbstractCegarLoop]: Abstraction has 5701 states and 9660 transitions. [2022-01-10 06:18:44,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 8 states have internal predecessors, (77), 5 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2022-01-10 06:18:44,849 INFO L276 IsEmpty]: Start isEmpty. Operand 5701 states and 9660 transitions. [2022-01-10 06:18:44,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-10 06:18:44,851 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:44,851 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:44,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 06:18:45,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:18:45,063 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:45,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:45,063 INFO L85 PathProgramCache]: Analyzing trace with hash 644482153, now seen corresponding path program 1 times [2022-01-10 06:18:45,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:45,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166090406] [2022-01-10 06:18:45,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:45,064 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:45,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:45,065 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:18:45,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 06:18:45,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:45,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:45,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:45,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:18:45,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:45,402 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:45,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166090406] [2022-01-10 06:18:45,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166090406] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:45,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:45,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:45,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948046191] [2022-01-10 06:18:45,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:45,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:45,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:45,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:45,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:45,403 INFO L87 Difference]: Start difference. First operand 5701 states and 9660 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:18:45,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:45,655 INFO L93 Difference]: Finished difference Result 11134 states and 19000 transitions. [2022-01-10 06:18:45,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:45,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 105 [2022-01-10 06:18:45,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:45,680 INFO L225 Difference]: With dead ends: 11134 [2022-01-10 06:18:45,680 INFO L226 Difference]: Without dead ends: 5701 [2022-01-10 06:18:45,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 102 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 06:18:45,695 INFO L933 BasicCegarLoop]: 823 mSDtfsCounter, 234 mSDsluCounter, 1392 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 2215 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:45,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 2215 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:18:45,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5701 states. [2022-01-10 06:18:45,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5701 to 5701. [2022-01-10 06:18:45,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5701 states, 4266 states have (on average 1.604313173933427) internal successors, (6844), 4563 states have internal predecessors, (6844), 1164 states have call successors, (1164), 217 states have call predecessors, (1164), 270 states have return successors, (1544), 1124 states have call predecessors, (1544), 1159 states have call successors, (1544) [2022-01-10 06:18:45,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5701 states to 5701 states and 9552 transitions. [2022-01-10 06:18:45,940 INFO L78 Accepts]: Start accepts. Automaton has 5701 states and 9552 transitions. Word has length 105 [2022-01-10 06:18:45,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:45,941 INFO L470 AbstractCegarLoop]: Abstraction has 5701 states and 9552 transitions. [2022-01-10 06:18:45,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:18:45,941 INFO L276 IsEmpty]: Start isEmpty. Operand 5701 states and 9552 transitions. [2022-01-10 06:18:45,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 06:18:45,945 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:45,945 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:45,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 06:18:46,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:18:46,155 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:46,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:46,156 INFO L85 PathProgramCache]: Analyzing trace with hash 150466493, now seen corresponding path program 1 times [2022-01-10 06:18:46,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:46,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2107956157] [2022-01-10 06:18:46,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:46,156 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:46,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:46,157 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:18:46,194 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 06:18:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:46,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 06:18:46,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:46,562 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 06:18:46,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:46,562 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:46,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2107956157] [2022-01-10 06:18:46,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2107956157] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:46,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:46,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:18:46,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564772028] [2022-01-10 06:18:46,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:46,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:18:46,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:46,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:18:46,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:18:46,564 INFO L87 Difference]: Start difference. First operand 5701 states and 9552 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 5 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2022-01-10 06:18:48,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:48,804 INFO L93 Difference]: Finished difference Result 11022 states and 18488 transitions. [2022-01-10 06:18:48,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 06:18:48,806 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 5 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 110 [2022-01-10 06:18:48,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:48,835 INFO L225 Difference]: With dead ends: 11022 [2022-01-10 06:18:48,835 INFO L226 Difference]: Without dead ends: 6246 [2022-01-10 06:18:48,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-01-10 06:18:48,852 INFO L933 BasicCegarLoop]: 797 mSDtfsCounter, 1911 mSDsluCounter, 1174 mSDsCounter, 0 mSdLazyCounter, 2775 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1978 SdHoareTripleChecker+Valid, 1971 SdHoareTripleChecker+Invalid, 3189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 2775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:48,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1978 Valid, 1971 Invalid, 3189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 2775 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 06:18:48,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6246 states. [2022-01-10 06:18:49,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6246 to 5959. [2022-01-10 06:18:49,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5959 states, 4458 states have (on average 1.5881561238223418) internal successors, (7080), 4777 states have internal predecessors, (7080), 1182 states have call successors, (1182), 245 states have call predecessors, (1182), 318 states have return successors, (1636), 1140 states have call predecessors, (1636), 1177 states have call successors, (1636) [2022-01-10 06:18:49,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5959 states to 5959 states and 9898 transitions. [2022-01-10 06:18:49,086 INFO L78 Accepts]: Start accepts. Automaton has 5959 states and 9898 transitions. Word has length 110 [2022-01-10 06:18:49,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:49,087 INFO L470 AbstractCegarLoop]: Abstraction has 5959 states and 9898 transitions. [2022-01-10 06:18:49,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 5 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2022-01-10 06:18:49,087 INFO L276 IsEmpty]: Start isEmpty. Operand 5959 states and 9898 transitions. [2022-01-10 06:18:49,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 06:18:49,089 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:49,089 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, 1, 1, 1, 1] [2022-01-10 06:18:49,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-01-10 06:18:49,299 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 06:18:49,299 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:49,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:49,299 INFO L85 PathProgramCache]: Analyzing trace with hash 523203956, now seen corresponding path program 1 times [2022-01-10 06:18:49,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:49,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812561768] [2022-01-10 06:18:49,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:49,300 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:49,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:49,301 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 06:18:49,302 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 06:18:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:49,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 06:18:49,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:49,766 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 06:18:49,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:49,766 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:49,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812561768] [2022-01-10 06:18:49,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812561768] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:49,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:49,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:18:49,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735117032] [2022-01-10 06:18:49,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:49,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:18:49,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:49,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:18:49,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:18:49,767 INFO L87 Difference]: Start difference. First operand 5959 states and 9898 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 7 states have internal predecessors, (88), 5 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-01-10 06:18:52,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:52,501 INFO L93 Difference]: Finished difference Result 11308 states and 18770 transitions. [2022-01-10 06:18:52,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 06:18:52,502 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 7 states have internal predecessors, (88), 5 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 115 [2022-01-10 06:18:52,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:52,531 INFO L225 Difference]: With dead ends: 11308 [2022-01-10 06:18:52,531 INFO L226 Difference]: Without dead ends: 6273 [2022-01-10 06:18:52,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-01-10 06:18:52,547 INFO L933 BasicCegarLoop]: 795 mSDtfsCounter, 1526 mSDsluCounter, 1582 mSDsCounter, 0 mSdLazyCounter, 3569 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 2377 SdHoareTripleChecker+Invalid, 3919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 3569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:52,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1587 Valid, 2377 Invalid, 3919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 3569 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 06:18:52,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6273 states. [2022-01-10 06:18:52,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6273 to 5916. [2022-01-10 06:18:52,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5916 states, 4423 states have (on average 1.5860275830884016) internal successors, (7015), 4735 states have internal predecessors, (7015), 1180 states have call successors, (1180), 245 states have call predecessors, (1180), 312 states have return successors, (1595), 1139 states have call predecessors, (1595), 1175 states have call successors, (1595) [2022-01-10 06:18:52,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5916 states to 5916 states and 9790 transitions. [2022-01-10 06:18:52,774 INFO L78 Accepts]: Start accepts. Automaton has 5916 states and 9790 transitions. Word has length 115 [2022-01-10 06:18:52,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:52,774 INFO L470 AbstractCegarLoop]: Abstraction has 5916 states and 9790 transitions. [2022-01-10 06:18:52,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 7 states have internal predecessors, (88), 5 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-01-10 06:18:52,774 INFO L276 IsEmpty]: Start isEmpty. Operand 5916 states and 9790 transitions. [2022-01-10 06:18:52,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 06:18:52,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:52,776 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, 1, 1, 1, 1] [2022-01-10 06:18:52,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 06:18:52,987 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 06:18:52,987 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:52,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:52,987 INFO L85 PathProgramCache]: Analyzing trace with hash 585243570, now seen corresponding path program 1 times [2022-01-10 06:18:52,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:52,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1337938543] [2022-01-10 06:18:52,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:52,988 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:52,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:52,989 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 06:18:52,991 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 06:18:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:53,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:18:53,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:53,413 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 06:18:53,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:53,413 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:53,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1337938543] [2022-01-10 06:18:53,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1337938543] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:53,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:53,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 06:18:53,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722408717] [2022-01-10 06:18:53,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:53,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:18:53,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:53,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:18:53,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:18:53,414 INFO L87 Difference]: Start difference. First operand 5916 states and 9790 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:18:55,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:55,834 INFO L93 Difference]: Finished difference Result 20731 states and 35656 transitions. [2022-01-10 06:18:55,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:18:55,836 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) Word has length 115 [2022-01-10 06:18:55,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:55,918 INFO L225 Difference]: With dead ends: 20731 [2022-01-10 06:18:55,918 INFO L226 Difference]: Without dead ends: 14860 [2022-01-10 06:18:55,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:18:55,944 INFO L933 BasicCegarLoop]: 1449 mSDtfsCounter, 2005 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 2213 mSolverCounterSat, 464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2124 SdHoareTripleChecker+Valid, 2516 SdHoareTripleChecker+Invalid, 2677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 464 IncrementalHoareTripleChecker+Valid, 2213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:55,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2124 Valid, 2516 Invalid, 2677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [464 Valid, 2213 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 06:18:55,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14860 states. [2022-01-10 06:18:56,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14860 to 14699. [2022-01-10 06:18:56,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14699 states, 10389 states have (on average 1.5692559437866975) internal successors, (16303), 11309 states have internal predecessors, (16303), 3640 states have call successors, (3640), 485 states have call predecessors, (3640), 669 states have return successors, (5119), 3587 states have call predecessors, (5119), 3635 states have call successors, (5119) [2022-01-10 06:18:56,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14699 states to 14699 states and 25062 transitions. [2022-01-10 06:18:56,647 INFO L78 Accepts]: Start accepts. Automaton has 14699 states and 25062 transitions. Word has length 115 [2022-01-10 06:18:56,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:56,648 INFO L470 AbstractCegarLoop]: Abstraction has 14699 states and 25062 transitions. [2022-01-10 06:18:56,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:18:56,648 INFO L276 IsEmpty]: Start isEmpty. Operand 14699 states and 25062 transitions. [2022-01-10 06:18:56,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-10 06:18:56,651 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:56,651 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, 1, 1, 1, 1, 1] [2022-01-10 06:18:56,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 06:18:56,862 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 06:18:56,863 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:56,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:56,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1723418949, now seen corresponding path program 1 times [2022-01-10 06:18:56,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:56,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401881011] [2022-01-10 06:18:56,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:56,864 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:56,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:56,865 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 06:18:56,865 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 06:18:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:57,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:18:57,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:57,290 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 06:18:57,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:57,290 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:57,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401881011] [2022-01-10 06:18:57,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401881011] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:57,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:57,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 06:18:57,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353755903] [2022-01-10 06:18:57,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:57,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:18:57,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:57,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:18:57,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:18:57,291 INFO L87 Difference]: Start difference. First operand 14699 states and 25062 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:19:00,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:00,711 INFO L93 Difference]: Finished difference Result 55210 states and 98522 transitions. [2022-01-10 06:19:00,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:19:00,712 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) Word has length 116 [2022-01-10 06:19:00,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:01,007 INFO L225 Difference]: With dead ends: 55210 [2022-01-10 06:19:01,007 INFO L226 Difference]: Without dead ends: 40556 [2022-01-10 06:19:01,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:19:01,186 INFO L933 BasicCegarLoop]: 1451 mSDtfsCounter, 2990 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 708 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3108 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 2248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 708 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 06:19:01,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3108 Valid, 2190 Invalid, 2248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [708 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 06:19:01,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40556 states. [2022-01-10 06:19:03,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40556 to 40251. [2022-01-10 06:19:03,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40251 states, 26750 states have (on average 1.5522990654205608) internal successors, (41524), 29596 states have internal predecessors, (41524), 12020 states have call successors, (12020), 965 states have call predecessors, (12020), 1480 states have return successors, (17853), 12030 states have call predecessors, (17853), 12015 states have call successors, (17853) [2022-01-10 06:19:03,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40251 states to 40251 states and 71397 transitions. [2022-01-10 06:19:03,386 INFO L78 Accepts]: Start accepts. Automaton has 40251 states and 71397 transitions. Word has length 116 [2022-01-10 06:19:03,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:19:03,387 INFO L470 AbstractCegarLoop]: Abstraction has 40251 states and 71397 transitions. [2022-01-10 06:19:03,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:19:03,387 INFO L276 IsEmpty]: Start isEmpty. Operand 40251 states and 71397 transitions. [2022-01-10 06:19:03,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-10 06:19:03,389 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:03,390 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, 1, 1, 1, 1, 1, 1] [2022-01-10 06:19:03,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-01-10 06:19:03,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:19:03,601 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:03,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:03,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1341172082, now seen corresponding path program 1 times [2022-01-10 06:19:03,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:03,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [883593727] [2022-01-10 06:19:03,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:19:03,602 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:03,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:03,604 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:19:03,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 06:19:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:03,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:19:03,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:04,008 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 06:19:04,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:19:04,008 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:04,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [883593727] [2022-01-10 06:19:04,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [883593727] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:19:04,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:19:04,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 06:19:04,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560233751] [2022-01-10 06:19:04,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:19:04,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:19:04,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:04,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:19:04,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:19:04,010 INFO L87 Difference]: Start difference. First operand 40251 states and 71397 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:19:12,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:12,279 INFO L93 Difference]: Finished difference Result 162197 states and 301873 transitions. [2022-01-10 06:19:12,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:19:12,280 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) Word has length 117 [2022-01-10 06:19:12,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:13,423 INFO L225 Difference]: With dead ends: 162197 [2022-01-10 06:19:13,424 INFO L226 Difference]: Without dead ends: 121991 [2022-01-10 06:19:13,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:19:13,728 INFO L933 BasicCegarLoop]: 1459 mSDtfsCounter, 2992 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 1544 mSolverCounterSat, 704 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3110 SdHoareTripleChecker+Valid, 2202 SdHoareTripleChecker+Invalid, 2248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 704 IncrementalHoareTripleChecker+Valid, 1544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 06:19:13,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3110 Valid, 2202 Invalid, 2248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [704 Valid, 1544 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 06:19:13,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121991 states.