/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_product25.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:18:23,361 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:18:23,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:18:23,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:18:23,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:18:23,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:18:23,414 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:18:23,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:18:23,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:18:23,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:18:23,421 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:18:23,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:18:23,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:18:23,423 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:18:23,424 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:18:23,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:18:23,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:18:23,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:18:23,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:18:23,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:18:23,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:18:23,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:18:23,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:18:23,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:18:23,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:18:23,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:18:23,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:18:23,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:18:23,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:18:23,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:18:23,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:18:23,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:18:23,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:18:23,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:18:23,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:18:23,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:18:23,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:18:23,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:18:23,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:18:23,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:18:23,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:18:23,449 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 06:18:23,475 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:18:23,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:18:23,475 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:18:23,475 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:18:23,476 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:18:23,476 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:18:23,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:18:23,477 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:18:23,477 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:18:23,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:18:23,477 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:18:23,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:18:23,478 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:18:23,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:18:23,478 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:18:23,478 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:18:23,478 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:18:23,478 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:18:23,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:18:23,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:18:23,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:18:23,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:18:23,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:18:23,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:18:23,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:18:23,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:18:23,480 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:18:23,480 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:18:23,480 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:18:23,480 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:18:23,480 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:18:23,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:18:23,480 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:18:23,481 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:18:23,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:18:23,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:18:23,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:18:23,670 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:18:23,671 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:18:23,672 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product25.cil.c [2022-01-10 06:18:23,731 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bbf6db04/992e02991bf94cfe8cc6dc2949226e88/FLAGe5a83b319 [2022-01-10 06:18:24,228 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:18:24,229 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product25.cil.c [2022-01-10 06:18:24,262 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bbf6db04/992e02991bf94cfe8cc6dc2949226e88/FLAGe5a83b319 [2022-01-10 06:18:24,766 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bbf6db04/992e02991bf94cfe8cc6dc2949226e88 [2022-01-10 06:18:24,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:18:24,770 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:18:24,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:18:24,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:18:24,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:18:24,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:18:24" (1/1) ... [2022-01-10 06:18:24,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@221625a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:24, skipping insertion in model container [2022-01-10 06:18:24,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:18:24" (1/1) ... [2022-01-10 06:18:24,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:18:24,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:18:25,077 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_product25.cil.c[23488,23501] [2022-01-10 06:18:25,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:18:25,159 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 06:18:25,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:18:25,196 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_product25.cil.c[23488,23501] [2022-01-10 06:18:25,255 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:18:25,263 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:18:25,291 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_product25.cil.c[23488,23501] [2022-01-10 06:18:25,321 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:18:25,338 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:18:25,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:25 WrapperNode [2022-01-10 06:18:25,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:18:25,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:18:25,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:18:25,340 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:18:25,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:25" (1/1) ... [2022-01-10 06:18:25,363 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:25" (1/1) ... [2022-01-10 06:18:25,392 INFO L137 Inliner]: procedures = 93, calls = 331, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 765 [2022-01-10 06:18:25,393 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:18:25,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:18:25,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:18:25,393 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:18:25,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:25" (1/1) ... [2022-01-10 06:18:25,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:25" (1/1) ... [2022-01-10 06:18:25,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:25" (1/1) ... [2022-01-10 06:18:25,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:25" (1/1) ... [2022-01-10 06:18:25,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:25" (1/1) ... [2022-01-10 06:18:25,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:25" (1/1) ... [2022-01-10 06:18:25,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:25" (1/1) ... [2022-01-10 06:18:25,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:18:25,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:18:25,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:18:25,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:18:25,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:25" (1/1) ... [2022-01-10 06:18:25,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:18:25,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:18:25,481 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 06:18:25,496 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 06:18:25,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:18:25,527 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-01-10 06:18:25,527 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-01-10 06:18:25,531 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-01-10 06:18:25,531 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-01-10 06:18:25,531 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-01-10 06:18:25,531 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-01-10 06:18:25,531 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-01-10 06:18:25,531 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-01-10 06:18:25,531 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-01-10 06:18:25,532 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-01-10 06:18:25,532 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-01-10 06:18:25,532 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-01-10 06:18:25,532 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-01-10 06:18:25,532 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-01-10 06:18:25,532 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-01-10 06:18:25,532 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-01-10 06:18:25,532 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-01-10 06:18:25,532 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-01-10 06:18:25,532 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-01-10 06:18:25,533 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-01-10 06:18:25,533 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-01-10 06:18:25,533 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-01-10 06:18:25,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:18:25,533 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-01-10 06:18:25,533 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-01-10 06:18:25,533 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-01-10 06:18:25,533 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-01-10 06:18:25,533 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-01-10 06:18:25,533 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-01-10 06:18:25,533 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-01-10 06:18:25,533 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-01-10 06:18:25,533 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-01-10 06:18:25,534 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-01-10 06:18:25,534 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2022-01-10 06:18:25,534 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2022-01-10 06:18:25,534 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-01-10 06:18:25,534 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-01-10 06:18:25,534 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-01-10 06:18:25,534 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-01-10 06:18:25,534 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-01-10 06:18:25,534 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-01-10 06:18:25,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:18:25,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:18:25,535 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-01-10 06:18:25,535 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-01-10 06:18:25,736 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:18:25,738 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:18:26,496 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:18:26,510 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:18:26,510 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 06:18:26,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:18:26 BoogieIcfgContainer [2022-01-10 06:18:26,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:18:26,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:18:26,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:18:26,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:18:26,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:18:24" (1/3) ... [2022-01-10 06:18:26,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c515341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:18:26, skipping insertion in model container [2022-01-10 06:18:26,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:25" (2/3) ... [2022-01-10 06:18:26,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c515341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:18:26, skipping insertion in model container [2022-01-10 06:18:26,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:18:26" (3/3) ... [2022-01-10 06:18:26,521 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product25.cil.c [2022-01-10 06:18:26,525 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:18:26,525 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:18:26,571 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:18:26,579 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 06:18:26,580 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:18:26,613 INFO L276 IsEmpty]: Start isEmpty. Operand has 532 states, 424 states have (on average 1.7146226415094339) internal successors, (727), 445 states have internal predecessors, (727), 85 states have call successors, (85), 21 states have call predecessors, (85), 21 states have return successors, (85), 79 states have call predecessors, (85), 85 states have call successors, (85) [2022-01-10 06:18:26,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 06:18:26,633 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:26,634 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 06:18:26,634 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:26,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:26,638 INFO L85 PathProgramCache]: Analyzing trace with hash -681820971, now seen corresponding path program 1 times [2022-01-10 06:18:26,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:26,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517992983] [2022-01-10 06:18:26,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:26,649 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:26,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:26,672 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 06:18:26,673 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 06:18:27,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:27,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 06:18:27,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:27,173 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 06:18:27,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:27,174 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:27,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517992983] [2022-01-10 06:18:27,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [517992983] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:27,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:27,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:18:27,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015354542] [2022-01-10 06:18:27,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:27,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 06:18:27,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:27,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 06:18:27,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:18:27,197 INFO L87 Difference]: Start difference. First operand has 532 states, 424 states have (on average 1.7146226415094339) internal successors, (727), 445 states have internal predecessors, (727), 85 states have call successors, (85), 21 states have call predecessors, (85), 21 states have return successors, (85), 79 states have call predecessors, (85), 85 states have call successors, (85) 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 06:18:27,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:27,244 INFO L93 Difference]: Finished difference Result 553 states and 927 transitions. [2022-01-10 06:18:27,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 06:18:27,245 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 06:18:27,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:27,259 INFO L225 Difference]: With dead ends: 553 [2022-01-10 06:18:27,259 INFO L226 Difference]: Without dead ends: 524 [2022-01-10 06:18:27,269 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 06:18:27,271 INFO L933 BasicCegarLoop]: 888 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, 888 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 06:18:27,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:18:27,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-01-10 06:18:27,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2022-01-10 06:18:27,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 418 states have (on average 1.7129186602870814) internal successors, (716), 437 states have internal predecessors, (716), 85 states have call successors, (85), 21 states have call predecessors, (85), 20 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2022-01-10 06:18:27,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 881 transitions. [2022-01-10 06:18:27,355 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 881 transitions. Word has length 76 [2022-01-10 06:18:27,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:27,356 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 881 transitions. [2022-01-10 06:18:27,356 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 06:18:27,356 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 881 transitions. [2022-01-10 06:18:27,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 06:18:27,360 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:27,360 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 06:18:27,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 06:18:27,569 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 06:18:27,570 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:27,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:27,571 INFO L85 PathProgramCache]: Analyzing trace with hash 81310121, now seen corresponding path program 1 times [2022-01-10 06:18:27,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:27,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1890849197] [2022-01-10 06:18:27,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:27,572 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:27,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:27,573 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 06:18:27,574 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 06:18:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:27,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:27,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:28,036 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 06:18:28,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:28,037 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:28,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1890849197] [2022-01-10 06:18:28,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1890849197] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:28,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:28,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:28,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936695907] [2022-01-10 06:18:28,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:28,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:28,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:28,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:28,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:28,040 INFO L87 Difference]: Start difference. First operand 524 states and 881 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 06:18:28,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:28,182 INFO L93 Difference]: Finished difference Result 1030 states and 1738 transitions. [2022-01-10 06:18:28,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:28,184 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 06:18:28,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:28,188 INFO L225 Difference]: With dead ends: 1030 [2022-01-10 06:18:28,188 INFO L226 Difference]: Without dead ends: 524 [2022-01-10 06:18:28,193 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 06:18:28,194 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 14 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2599 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 06:18:28,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 2599 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:18:28,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-01-10 06:18:28,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2022-01-10 06:18:28,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 418 states have (on average 1.7105263157894737) internal successors, (715), 437 states have internal predecessors, (715), 85 states have call successors, (85), 21 states have call predecessors, (85), 20 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2022-01-10 06:18:28,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 880 transitions. [2022-01-10 06:18:28,257 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 880 transitions. Word has length 78 [2022-01-10 06:18:28,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:28,258 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 880 transitions. [2022-01-10 06:18:28,258 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 06:18:28,258 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 880 transitions. [2022-01-10 06:18:28,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 06:18:28,262 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:28,262 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 06:18:28,275 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 06:18:28,483 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 06:18:28,483 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:28,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:28,484 INFO L85 PathProgramCache]: Analyzing trace with hash -631677625, now seen corresponding path program 1 times [2022-01-10 06:18:28,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:28,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470013940] [2022-01-10 06:18:28,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:28,487 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:28,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:28,505 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 06:18:28,519 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 06:18:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:28,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:28,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:28,977 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 06:18:28,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:28,978 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:28,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1470013940] [2022-01-10 06:18:28,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1470013940] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:28,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:28,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:28,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012934486] [2022-01-10 06:18:28,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:28,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:28,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:28,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:28,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:28,980 INFO L87 Difference]: Start difference. First operand 524 states and 880 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 06:18:29,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:29,055 INFO L93 Difference]: Finished difference Result 1030 states and 1737 transitions. [2022-01-10 06:18:29,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:29,056 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 06:18:29,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:29,061 INFO L225 Difference]: With dead ends: 1030 [2022-01-10 06:18:29,061 INFO L226 Difference]: Without dead ends: 524 [2022-01-10 06:18:29,064 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 06:18:29,066 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 12 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2599 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 06:18:29,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 2599 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:18:29,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-01-10 06:18:29,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2022-01-10 06:18:29,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 418 states have (on average 1.708133971291866) internal successors, (714), 437 states have internal predecessors, (714), 85 states have call successors, (85), 21 states have call predecessors, (85), 20 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2022-01-10 06:18:29,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 879 transitions. [2022-01-10 06:18:29,127 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 879 transitions. Word has length 79 [2022-01-10 06:18:29,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:29,127 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 879 transitions. [2022-01-10 06:18:29,127 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 06:18:29,127 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 879 transitions. [2022-01-10 06:18:29,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 06:18:29,129 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:29,129 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 06:18:29,143 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 06:18:29,341 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 06:18:29,341 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:29,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:29,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1571571173, now seen corresponding path program 1 times [2022-01-10 06:18:29,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:29,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252724715] [2022-01-10 06:18:29,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:29,345 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:29,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:29,347 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 06:18:29,349 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 06:18:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:29,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 706 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:29,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:29,741 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 06:18:29,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:29,742 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:29,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1252724715] [2022-01-10 06:18:29,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1252724715] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:29,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:29,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:29,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695521751] [2022-01-10 06:18:29,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:29,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:29,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:29,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:29,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:29,752 INFO L87 Difference]: Start difference. First operand 524 states and 879 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 06:18:29,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:29,802 INFO L93 Difference]: Finished difference Result 1030 states and 1736 transitions. [2022-01-10 06:18:29,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:29,803 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 06:18:29,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:29,807 INFO L225 Difference]: With dead ends: 1030 [2022-01-10 06:18:29,807 INFO L226 Difference]: Without dead ends: 524 [2022-01-10 06:18:29,810 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 06:18:29,810 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 10 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2599 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 06:18:29,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2599 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:18:29,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-01-10 06:18:29,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2022-01-10 06:18:29,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 418 states have (on average 1.7057416267942584) internal successors, (713), 437 states have internal predecessors, (713), 85 states have call successors, (85), 21 states have call predecessors, (85), 20 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2022-01-10 06:18:29,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 878 transitions. [2022-01-10 06:18:29,825 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 878 transitions. Word has length 80 [2022-01-10 06:18:29,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:29,825 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 878 transitions. [2022-01-10 06:18:29,826 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 06:18:29,826 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 878 transitions. [2022-01-10 06:18:29,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 06:18:29,827 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:29,828 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 06:18:29,839 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 06:18:30,039 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 06:18:30,040 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:30,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:30,040 INFO L85 PathProgramCache]: Analyzing trace with hash -311127677, now seen corresponding path program 1 times [2022-01-10 06:18:30,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:30,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304967254] [2022-01-10 06:18:30,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:30,041 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:30,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:30,043 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 06:18:30,044 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 06:18:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:30,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:30,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:30,387 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 06:18:30,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:30,387 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:30,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304967254] [2022-01-10 06:18:30,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304967254] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:30,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:30,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:30,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132595742] [2022-01-10 06:18:30,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:30,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:30,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:30,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:30,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:30,389 INFO L87 Difference]: Start difference. First operand 524 states and 878 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 06:18:30,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:30,423 INFO L93 Difference]: Finished difference Result 1030 states and 1735 transitions. [2022-01-10 06:18:30,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:30,424 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 06:18:30,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:30,427 INFO L225 Difference]: With dead ends: 1030 [2022-01-10 06:18:30,427 INFO L226 Difference]: Without dead ends: 524 [2022-01-10 06:18:30,428 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 06:18:30,429 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 8 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2599 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 06:18:30,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 2599 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:18:30,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-01-10 06:18:30,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2022-01-10 06:18:30,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 418 states have (on average 1.7033492822966507) internal successors, (712), 437 states have internal predecessors, (712), 85 states have call successors, (85), 21 states have call predecessors, (85), 20 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2022-01-10 06:18:30,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 877 transitions. [2022-01-10 06:18:30,442 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 877 transitions. Word has length 81 [2022-01-10 06:18:30,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:30,442 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 877 transitions. [2022-01-10 06:18:30,442 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 06:18:30,442 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 877 transitions. [2022-01-10 06:18:30,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 06:18:30,444 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:30,444 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 06:18:30,459 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 06:18:30,655 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 06:18:30,655 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:30,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:30,655 INFO L85 PathProgramCache]: Analyzing trace with hash -9184735, now seen corresponding path program 1 times [2022-01-10 06:18:30,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:30,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [423889268] [2022-01-10 06:18:30,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:30,656 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:30,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:30,657 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 06:18:30,658 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 06:18:30,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:30,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:30,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:30,977 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 06:18:30,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:30,977 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:30,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [423889268] [2022-01-10 06:18:30,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [423889268] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:30,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:30,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:30,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337313792] [2022-01-10 06:18:30,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:30,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:30,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:30,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:30,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:30,979 INFO L87 Difference]: Start difference. First operand 524 states and 877 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 06:18:31,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:31,011 INFO L93 Difference]: Finished difference Result 1030 states and 1734 transitions. [2022-01-10 06:18:31,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:31,012 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 06:18:31,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:31,015 INFO L225 Difference]: With dead ends: 1030 [2022-01-10 06:18:31,015 INFO L226 Difference]: Without dead ends: 524 [2022-01-10 06:18:31,017 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 06:18:31,017 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 6 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2599 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 06:18:31,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 2599 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:18:31,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-01-10 06:18:31,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2022-01-10 06:18:31,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 418 states have (on average 1.700956937799043) internal successors, (711), 437 states have internal predecessors, (711), 85 states have call successors, (85), 21 states have call predecessors, (85), 20 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2022-01-10 06:18:31,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 876 transitions. [2022-01-10 06:18:31,043 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 876 transitions. Word has length 82 [2022-01-10 06:18:31,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:31,043 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 876 transitions. [2022-01-10 06:18:31,043 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 06:18:31,043 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 876 transitions. [2022-01-10 06:18:31,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 06:18:31,045 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:31,045 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 06:18:31,056 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 06:18:31,256 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 06:18:31,257 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:31,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:31,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1078676958, now seen corresponding path program 1 times [2022-01-10 06:18:31,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:31,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647685494] [2022-01-10 06:18:31,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:31,258 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:31,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:31,259 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 06:18:31,261 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 06:18:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:31,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:31,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:31,587 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 06:18:31,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:31,587 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:31,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647685494] [2022-01-10 06:18:31,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647685494] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:31,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:31,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:31,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098599665] [2022-01-10 06:18:31,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:31,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:31,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:31,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:31,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:31,589 INFO L87 Difference]: Start difference. First operand 524 states and 876 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 06:18:31,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:31,622 INFO L93 Difference]: Finished difference Result 1030 states and 1733 transitions. [2022-01-10 06:18:31,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:31,623 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 06:18:31,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:31,626 INFO L225 Difference]: With dead ends: 1030 [2022-01-10 06:18:31,626 INFO L226 Difference]: Without dead ends: 524 [2022-01-10 06:18:31,628 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 06:18:31,628 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 4 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2599 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 06:18:31,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2599 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:18:31,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-01-10 06:18:31,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2022-01-10 06:18:31,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 418 states have (on average 1.6985645933014355) internal successors, (710), 437 states have internal predecessors, (710), 85 states have call successors, (85), 21 states have call predecessors, (85), 20 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2022-01-10 06:18:31,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 875 transitions. [2022-01-10 06:18:31,643 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 875 transitions. Word has length 83 [2022-01-10 06:18:31,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:31,643 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 875 transitions. [2022-01-10 06:18:31,643 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 06:18:31,643 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 875 transitions. [2022-01-10 06:18:31,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 06:18:31,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:31,645 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 06:18:31,655 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 06:18:31,855 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 06:18:31,856 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:31,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:31,856 INFO L85 PathProgramCache]: Analyzing trace with hash -702822977, now seen corresponding path program 1 times [2022-01-10 06:18:31,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:31,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450793297] [2022-01-10 06:18:31,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:31,857 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:31,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:31,861 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 06:18:31,862 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 06:18:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:32,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:18:32,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:32,201 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 06:18:32,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:32,202 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:32,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450793297] [2022-01-10 06:18:32,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1450793297] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:32,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:32,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:18:32,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556686223] [2022-01-10 06:18:32,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:32,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:18:32,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:32,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:18:32,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:18:32,203 INFO L87 Difference]: Start difference. First operand 524 states and 875 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 06:18:32,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:32,303 INFO L93 Difference]: Finished difference Result 990 states and 1657 transitions. [2022-01-10 06:18:32,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:18:32,304 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 06:18:32,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:32,307 INFO L225 Difference]: With dead ends: 990 [2022-01-10 06:18:32,307 INFO L226 Difference]: Without dead ends: 518 [2022-01-10 06:18:32,309 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 06:18:32,309 INFO L933 BasicCegarLoop]: 862 mSDtfsCounter, 117 mSDsluCounter, 4217 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 5079 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:32,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 5079 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:18:32,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-01-10 06:18:32,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 518. [2022-01-10 06:18:32,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 412 states have (on average 1.691747572815534) internal successors, (697), 431 states have internal predecessors, (697), 85 states have call successors, (85), 21 states have call predecessors, (85), 20 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2022-01-10 06:18:32,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 862 transitions. [2022-01-10 06:18:32,320 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 862 transitions. Word has length 83 [2022-01-10 06:18:32,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:32,320 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 862 transitions. [2022-01-10 06:18:32,321 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 06:18:32,321 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 862 transitions. [2022-01-10 06:18:32,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 06:18:32,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:32,322 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 06:18:32,351 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 06:18:32,533 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 06:18:32,534 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:32,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:32,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1074915881, now seen corresponding path program 1 times [2022-01-10 06:18:32,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:32,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [311205463] [2022-01-10 06:18:32,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:32,535 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:32,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:32,536 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 06:18:32,538 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 06:18:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:32,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:32,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:33,017 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 06:18:33,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:33,018 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:33,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [311205463] [2022-01-10 06:18:33,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [311205463] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:33,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:33,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:33,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232598794] [2022-01-10 06:18:33,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:33,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:33,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:33,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:33,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:33,019 INFO L87 Difference]: Start difference. First operand 518 states and 862 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 06:18:33,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:33,118 INFO L93 Difference]: Finished difference Result 984 states and 1644 transitions. [2022-01-10 06:18:33,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:33,118 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 06:18:33,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:33,122 INFO L225 Difference]: With dead ends: 984 [2022-01-10 06:18:33,122 INFO L226 Difference]: Without dead ends: 518 [2022-01-10 06:18:33,124 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 06:18:33,125 INFO L933 BasicCegarLoop]: 813 mSDtfsCounter, 90 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 2413 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 06:18:33,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 2413 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:18:33,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-01-10 06:18:33,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 518. [2022-01-10 06:18:33,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 412 states have (on average 1.6820388349514563) internal successors, (693), 431 states have internal predecessors, (693), 85 states have call successors, (85), 21 states have call predecessors, (85), 20 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2022-01-10 06:18:33,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 858 transitions. [2022-01-10 06:18:33,141 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 858 transitions. Word has length 84 [2022-01-10 06:18:33,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:33,142 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 858 transitions. [2022-01-10 06:18:33,142 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 06:18:33,142 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 858 transitions. [2022-01-10 06:18:33,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 06:18:33,144 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:33,144 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 06:18:33,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 06:18:33,357 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 06:18:33,358 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:33,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:33,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1530003038, now seen corresponding path program 1 times [2022-01-10 06:18:33,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:33,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973988674] [2022-01-10 06:18:33,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:33,359 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:33,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:33,360 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 06:18:33,394 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 06:18:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:33,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:33,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:33,671 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 06:18:33,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:33,672 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:33,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973988674] [2022-01-10 06:18:33,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [973988674] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:33,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:33,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:33,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265927417] [2022-01-10 06:18:33,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:33,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:33,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:33,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:33,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:33,673 INFO L87 Difference]: Start difference. First operand 518 states and 858 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 06:18:33,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:33,787 INFO L93 Difference]: Finished difference Result 984 states and 1640 transitions. [2022-01-10 06:18:33,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:33,787 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 06:18:33,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:33,791 INFO L225 Difference]: With dead ends: 984 [2022-01-10 06:18:33,792 INFO L226 Difference]: Without dead ends: 518 [2022-01-10 06:18:33,794 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 06:18:33,794 INFO L933 BasicCegarLoop]: 813 mSDtfsCounter, 85 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 2413 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 06:18:33,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 2413 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:18:33,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-01-10 06:18:33,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 518. [2022-01-10 06:18:33,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 412 states have (on average 1.6723300970873787) internal successors, (689), 431 states have internal predecessors, (689), 85 states have call successors, (85), 21 states have call predecessors, (85), 20 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2022-01-10 06:18:33,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 854 transitions. [2022-01-10 06:18:33,808 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 854 transitions. Word has length 85 [2022-01-10 06:18:33,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:33,809 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 854 transitions. [2022-01-10 06:18:33,809 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 06:18:33,809 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 854 transitions. [2022-01-10 06:18:33,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 06:18:33,811 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:33,811 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, 1] [2022-01-10 06:18:33,828 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 06:18:34,022 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 06:18:34,022 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:34,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:34,023 INFO L85 PathProgramCache]: Analyzing trace with hash 723638542, now seen corresponding path program 1 times [2022-01-10 06:18:34,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:34,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [305177404] [2022-01-10 06:18:34,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:34,025 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:34,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:34,026 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 06:18:34,028 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 06:18:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:34,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:34,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:35,850 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 06:18:35,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:35,850 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:35,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [305177404] [2022-01-10 06:18:35,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [305177404] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:35,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:35,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:35,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519134748] [2022-01-10 06:18:35,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:35,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:35,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:35,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:35,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:35,852 INFO L87 Difference]: Start difference. First operand 518 states and 854 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 06:18:35,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:35,946 INFO L93 Difference]: Finished difference Result 984 states and 1636 transitions. [2022-01-10 06:18:35,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:35,949 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 06:18:35,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:35,952 INFO L225 Difference]: With dead ends: 984 [2022-01-10 06:18:35,952 INFO L226 Difference]: Without dead ends: 518 [2022-01-10 06:18:35,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:18:35,954 INFO L933 BasicCegarLoop]: 813 mSDtfsCounter, 80 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 2413 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 06:18:35,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 2413 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:18:35,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-01-10 06:18:35,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 518. [2022-01-10 06:18:35,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 412 states have (on average 1.662621359223301) internal successors, (685), 431 states have internal predecessors, (685), 85 states have call successors, (85), 21 states have call predecessors, (85), 20 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2022-01-10 06:18:35,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 850 transitions. [2022-01-10 06:18:35,967 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 850 transitions. Word has length 86 [2022-01-10 06:18:35,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:35,967 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 850 transitions. [2022-01-10 06:18:35,968 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 06:18:35,968 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 850 transitions. [2022-01-10 06:18:35,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 06:18:35,980 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:35,980 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 06:18:36,003 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 06:18:36,210 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 06:18:36,210 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:36,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:36,211 INFO L85 PathProgramCache]: Analyzing trace with hash 2061841806, now seen corresponding path program 1 times [2022-01-10 06:18:36,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:36,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [12535114] [2022-01-10 06:18:36,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:36,212 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:36,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:36,213 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 06:18:36,221 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 06:18:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:36,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:18:36,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:36,545 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 06:18:36,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:36,546 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:36,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [12535114] [2022-01-10 06:18:36,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [12535114] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:36,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:36,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:18:36,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231036737] [2022-01-10 06:18:36,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:36,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:18:36,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:36,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:18:36,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:18:36,547 INFO L87 Difference]: Start difference. First operand 518 states and 850 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 06:18:36,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:36,604 INFO L93 Difference]: Finished difference Result 984 states and 1632 transitions. [2022-01-10 06:18:36,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:18:36,605 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 06:18:36,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:36,607 INFO L225 Difference]: With dead ends: 984 [2022-01-10 06:18:36,607 INFO L226 Difference]: Without dead ends: 497 [2022-01-10 06:18:36,608 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 06:18:36,609 INFO L933 BasicCegarLoop]: 838 mSDtfsCounter, 110 mSDsluCounter, 4106 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 4944 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 06:18:36,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 4944 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:18:36,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-01-10 06:18:36,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2022-01-10 06:18:36,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 391 states have (on average 1.6649616368286444) internal successors, (651), 410 states have internal predecessors, (651), 85 states have call successors, (85), 21 states have call predecessors, (85), 20 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2022-01-10 06:18:36,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 816 transitions. [2022-01-10 06:18:36,618 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 816 transitions. Word has length 86 [2022-01-10 06:18:36,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:36,618 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 816 transitions. [2022-01-10 06:18:36,618 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 06:18:36,618 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 816 transitions. [2022-01-10 06:18:36,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 06:18:36,619 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:36,619 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 06:18:36,632 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 06:18:36,830 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 06:18:36,830 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:36,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:36,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1026167065, now seen corresponding path program 1 times [2022-01-10 06:18:36,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:36,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451562840] [2022-01-10 06:18:36,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:36,831 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:36,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:36,832 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 06:18:36,833 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 06:18:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:37,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:37,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:37,179 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 06:18:37,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:37,180 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:37,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451562840] [2022-01-10 06:18:37,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [451562840] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:37,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:37,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:37,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922582608] [2022-01-10 06:18:37,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:37,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:37,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:37,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:37,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:37,181 INFO L87 Difference]: Start difference. First operand 497 states and 816 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 06:18:37,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:37,252 INFO L93 Difference]: Finished difference Result 963 states and 1598 transitions. [2022-01-10 06:18:37,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:37,254 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 06:18:37,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:37,257 INFO L225 Difference]: With dead ends: 963 [2022-01-10 06:18:37,257 INFO L226 Difference]: Without dead ends: 497 [2022-01-10 06:18:37,261 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 06:18:37,262 INFO L933 BasicCegarLoop]: 806 mSDtfsCounter, 41 mSDsluCounter, 1593 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 2399 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 06:18:37,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 2399 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:18:37,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-01-10 06:18:37,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2022-01-10 06:18:37,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 391 states have (on average 1.6624040920716112) internal successors, (650), 410 states have internal predecessors, (650), 85 states have call successors, (85), 21 states have call predecessors, (85), 20 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2022-01-10 06:18:37,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 815 transitions. [2022-01-10 06:18:37,276 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 815 transitions. Word has length 87 [2022-01-10 06:18:37,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:37,277 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 815 transitions. [2022-01-10 06:18:37,277 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 06:18:37,277 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 815 transitions. [2022-01-10 06:18:37,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 06:18:37,280 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:37,280 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 06:18:37,299 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 06:18:37,493 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 06:18:37,493 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:37,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:37,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1966183411, now seen corresponding path program 1 times [2022-01-10 06:18:37,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:37,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722005414] [2022-01-10 06:18:37,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:37,494 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:37,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:37,495 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 06:18:37,497 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 06:18:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:37,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:37,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:37,880 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 06:18:37,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:37,880 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:37,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1722005414] [2022-01-10 06:18:37,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1722005414] 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 [4] imperfect sequences [] total 4 [2022-01-10 06:18:37,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999618191] [2022-01-10 06:18:37,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:37,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:37,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:37,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:37,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:37,882 INFO L87 Difference]: Start difference. First operand 497 states and 815 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 06:18:37,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:37,914 INFO L93 Difference]: Finished difference Result 963 states and 1597 transitions. [2022-01-10 06:18:37,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:37,916 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 06:18:37,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:37,918 INFO L225 Difference]: With dead ends: 963 [2022-01-10 06:18:37,918 INFO L226 Difference]: Without dead ends: 497 [2022-01-10 06:18:37,919 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 06:18:37,920 INFO L933 BasicCegarLoop]: 806 mSDtfsCounter, 39 mSDsluCounter, 1593 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2399 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 06:18:37,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 2399 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:18:37,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-01-10 06:18:37,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2022-01-10 06:18:37,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 391 states have (on average 1.659846547314578) internal successors, (649), 410 states have internal predecessors, (649), 85 states have call successors, (85), 21 states have call predecessors, (85), 20 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2022-01-10 06:18:37,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 814 transitions. [2022-01-10 06:18:37,930 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 814 transitions. Word has length 88 [2022-01-10 06:18:37,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:37,930 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 814 transitions. [2022-01-10 06:18:37,930 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 06:18:37,931 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 814 transitions. [2022-01-10 06:18:37,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 06:18:37,932 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:37,932 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 06:18:37,944 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 06:18:38,142 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 06:18:38,142 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:38,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:38,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1641517100, now seen corresponding path program 1 times [2022-01-10 06:18:38,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:38,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106842537] [2022-01-10 06:18:38,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:38,143 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:38,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:38,144 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 06:18:38,146 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 06:18:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:38,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 06:18:38,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:38,470 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 06:18:38,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:38,470 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:38,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106842537] [2022-01-10 06:18:38,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1106842537] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:38,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:38,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:18:38,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076534215] [2022-01-10 06:18:38,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:38,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:18:38,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:38,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:18:38,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:18:38,472 INFO L87 Difference]: Start difference. First operand 497 states and 814 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 06:18:38,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:38,579 INFO L93 Difference]: Finished difference Result 957 states and 1585 transitions. [2022-01-10 06:18:38,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 06:18:38,581 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 06:18:38,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:38,583 INFO L225 Difference]: With dead ends: 957 [2022-01-10 06:18:38,583 INFO L226 Difference]: Without dead ends: 497 [2022-01-10 06:18:38,586 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 06:18:38,587 INFO L933 BasicCegarLoop]: 799 mSDtfsCounter, 31 mSDsluCounter, 4772 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 5571 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 06:18:38,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 5571 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:18:38,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-01-10 06:18:38,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2022-01-10 06:18:38,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 391 states have (on average 1.6572890025575449) internal successors, (648), 410 states have internal predecessors, (648), 85 states have call successors, (85), 21 states have call predecessors, (85), 20 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2022-01-10 06:18:38,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 813 transitions. [2022-01-10 06:18:38,597 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 813 transitions. Word has length 89 [2022-01-10 06:18:38,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:38,597 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 813 transitions. [2022-01-10 06:18:38,597 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 06:18:38,598 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 813 transitions. [2022-01-10 06:18:38,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 06:18:38,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:38,599 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 06:18:38,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-01-10 06:18:38,809 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 06:18:38,809 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:38,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:38,810 INFO L85 PathProgramCache]: Analyzing trace with hash -65396824, now seen corresponding path program 1 times [2022-01-10 06:18:38,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:38,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [425620511] [2022-01-10 06:18:38,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:38,810 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:38,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:38,811 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 06:18:38,813 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 06:18:39,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:39,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 06:18:39,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:39,386 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 06:18:39,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:39,386 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:39,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [425620511] [2022-01-10 06:18:39,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [425620511] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:39,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:39,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 06:18:39,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090003400] [2022-01-10 06:18:39,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:39,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 06:18:39,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:39,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 06:18:39,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-10 06:18:39,388 INFO L87 Difference]: Start difference. First operand 497 states and 813 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 06:18:41,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:41,487 INFO L93 Difference]: Finished difference Result 1076 states and 1811 transitions. [2022-01-10 06:18:41,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:18:41,488 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 06:18:41,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:41,491 INFO L225 Difference]: With dead ends: 1076 [2022-01-10 06:18:41,491 INFO L226 Difference]: Without dead ends: 624 [2022-01-10 06:18:41,493 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 06:18:41,494 INFO L933 BasicCegarLoop]: 883 mSDtfsCounter, 1396 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 3205 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 2738 SdHoareTripleChecker+Invalid, 3715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 3205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:41,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1396 Valid, 2738 Invalid, 3715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [510 Valid, 3205 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-10 06:18:41,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2022-01-10 06:18:41,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 501. [2022-01-10 06:18:41,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 394 states have (on average 1.6522842639593909) internal successors, (651), 413 states have internal predecessors, (651), 85 states have call successors, (85), 21 states have call predecessors, (85), 21 states have return successors, (96), 79 states have call predecessors, (96), 80 states have call successors, (96) [2022-01-10 06:18:41,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 832 transitions. [2022-01-10 06:18:41,530 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 832 transitions. Word has length 90 [2022-01-10 06:18:41,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:41,531 INFO L470 AbstractCegarLoop]: Abstraction has 501 states and 832 transitions. [2022-01-10 06:18:41,531 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 06:18:41,531 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 832 transitions. [2022-01-10 06:18:41,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 06:18:41,532 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:41,532 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 06:18:41,560 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 06:18:41,751 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 06:18:41,751 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:41,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:41,752 INFO L85 PathProgramCache]: Analyzing trace with hash 226729264, now seen corresponding path program 1 times [2022-01-10 06:18:41,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:41,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537056647] [2022-01-10 06:18:41,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:41,753 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:41,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:41,754 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 06:18:41,755 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 06:18:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:41,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:18:41,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:42,136 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 06:18:42,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:42,137 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:42,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537056647] [2022-01-10 06:18:42,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1537056647] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:42,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:42,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:18:42,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84729288] [2022-01-10 06:18:42,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:42,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:18:42,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:42,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:18:42,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:18:42,138 INFO L87 Difference]: Start difference. First operand 501 states and 832 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 06:18:45,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:45,386 INFO L93 Difference]: Finished difference Result 1770 states and 3035 transitions. [2022-01-10 06:18:45,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 06:18:45,387 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 06:18:45,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:45,399 INFO L225 Difference]: With dead ends: 1770 [2022-01-10 06:18:45,399 INFO L226 Difference]: Without dead ends: 1314 [2022-01-10 06:18:45,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2022-01-10 06:18:45,413 INFO L933 BasicCegarLoop]: 1303 mSDtfsCounter, 2245 mSDsluCounter, 1814 mSDsCounter, 0 mSdLazyCounter, 4120 mSolverCounterSat, 619 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2306 SdHoareTripleChecker+Valid, 3117 SdHoareTripleChecker+Invalid, 4739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 619 IncrementalHoareTripleChecker+Valid, 4120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:45,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2306 Valid, 3117 Invalid, 4739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [619 Valid, 4120 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-01-10 06:18:45,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2022-01-10 06:18:45,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1255. [2022-01-10 06:18:45,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 984 states have (on average 1.6646341463414633) internal successors, (1638), 1032 states have internal predecessors, (1638), 216 states have call successors, (216), 54 states have call predecessors, (216), 54 states have return successors, (231), 205 states have call predecessors, (231), 211 states have call successors, (231) [2022-01-10 06:18:45,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 2085 transitions. [2022-01-10 06:18:45,475 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 2085 transitions. Word has length 91 [2022-01-10 06:18:45,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:45,476 INFO L470 AbstractCegarLoop]: Abstraction has 1255 states and 2085 transitions. [2022-01-10 06:18:45,476 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 06:18:45,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 2085 transitions. [2022-01-10 06:18:45,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 06:18:45,477 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:45,477 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 06:18:45,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-01-10 06:18:45,687 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 06:18:45,687 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:45,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:45,688 INFO L85 PathProgramCache]: Analyzing trace with hash -362882736, now seen corresponding path program 1 times [2022-01-10 06:18:45,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:45,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [224035063] [2022-01-10 06:18:45,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:45,688 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:45,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:45,689 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 06:18:45,692 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 06:18:45,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:45,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 06:18:45,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:46,110 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 06:18:46,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:46,111 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:46,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [224035063] [2022-01-10 06:18:46,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [224035063] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:46,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:46,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:18:46,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322328072] [2022-01-10 06:18:46,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:46,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:18:46,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:46,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:18:46,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:18:46,112 INFO L87 Difference]: Start difference. First operand 1255 states and 2085 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 06:18:50,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:50,027 INFO L93 Difference]: Finished difference Result 5327 states and 9224 transitions. [2022-01-10 06:18:50,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 06:18:50,028 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 06:18:50,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:50,075 INFO L225 Difference]: With dead ends: 5327 [2022-01-10 06:18:50,075 INFO L226 Difference]: Without dead ends: 4117 [2022-01-10 06:18:50,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-01-10 06:18:50,089 INFO L933 BasicCegarLoop]: 1563 mSDtfsCounter, 2922 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 5518 mSolverCounterSat, 1077 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3037 SdHoareTripleChecker+Valid, 3595 SdHoareTripleChecker+Invalid, 6595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1077 IncrementalHoareTripleChecker+Valid, 5518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:50,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3037 Valid, 3595 Invalid, 6595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1077 Valid, 5518 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-01-10 06:18:50,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4117 states. [2022-01-10 06:18:50,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4117 to 2920. [2022-01-10 06:18:50,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2181 states have (on average 1.6492434662998625) internal successors, (3597), 2327 states have internal predecessors, (3597), 624 states have call successors, (624), 103 states have call predecessors, (624), 114 states have return successors, (751), 611 states have call predecessors, (751), 619 states have call successors, (751) [2022-01-10 06:18:50,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 4972 transitions. [2022-01-10 06:18:50,322 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 4972 transitions. Word has length 93 [2022-01-10 06:18:50,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:50,323 INFO L470 AbstractCegarLoop]: Abstraction has 2920 states and 4972 transitions. [2022-01-10 06:18:50,323 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 06:18:50,323 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 4972 transitions. [2022-01-10 06:18:50,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 06:18:50,325 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:50,325 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 06:18:50,338 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 06:18:50,537 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 06:18:50,538 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:50,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:50,538 INFO L85 PathProgramCache]: Analyzing trace with hash 60763986, now seen corresponding path program 1 times [2022-01-10 06:18:50,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:50,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1905245791] [2022-01-10 06:18:50,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:50,539 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:50,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:50,541 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 06:18:50,545 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 06:18:50,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:50,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:18:50,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:51,017 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 06:18:51,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:51,017 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:51,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1905245791] [2022-01-10 06:18:51,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1905245791] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:51,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:51,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:18:51,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510474136] [2022-01-10 06:18:51,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:51,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:18:51,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:51,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:18:51,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:18:51,018 INFO L87 Difference]: Start difference. First operand 2920 states and 4972 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 06:18:53,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:53,778 INFO L93 Difference]: Finished difference Result 7710 states and 13214 transitions. [2022-01-10 06:18:53,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 06:18:53,779 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 06:18:53,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:53,831 INFO L225 Difference]: With dead ends: 7710 [2022-01-10 06:18:53,831 INFO L226 Difference]: Without dead ends: 5632 [2022-01-10 06:18:53,842 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 06:18:53,842 INFO L933 BasicCegarLoop]: 968 mSDtfsCounter, 2531 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 2850 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2592 SdHoareTripleChecker+Valid, 2250 SdHoareTripleChecker+Invalid, 3367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 2850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:53,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2592 Valid, 2250 Invalid, 3367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 2850 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 06:18:53,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5632 states. [2022-01-10 06:18:53,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5632 to 5353. [2022-01-10 06:18:53,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5353 states, 4024 states have (on average 1.6500994035785288) internal successors, (6640), 4291 states have internal predecessors, (6640), 1100 states have call successors, (1100), 187 states have call predecessors, (1100), 228 states have return successors, (1402), 1078 states have call predecessors, (1402), 1095 states have call successors, (1402) [2022-01-10 06:18:54,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5353 states to 5353 states and 9142 transitions. [2022-01-10 06:18:54,021 INFO L78 Accepts]: Start accepts. Automaton has 5353 states and 9142 transitions. Word has length 93 [2022-01-10 06:18:54,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:54,021 INFO L470 AbstractCegarLoop]: Abstraction has 5353 states and 9142 transitions. [2022-01-10 06:18:54,027 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 06:18:54,028 INFO L276 IsEmpty]: Start isEmpty. Operand 5353 states and 9142 transitions. [2022-01-10 06:18:54,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 06:18:54,030 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:54,030 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:18:54,050 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 06:18:54,242 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 06:18:54,242 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:54,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:54,243 INFO L85 PathProgramCache]: Analyzing trace with hash -550713329, now seen corresponding path program 1 times [2022-01-10 06:18:54,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:54,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2009045517] [2022-01-10 06:18:54,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:54,244 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:54,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:54,245 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 06:18:54,246 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 06:18:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:54,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 06:18:54,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:54,729 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 06:18:54,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:54,729 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:54,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2009045517] [2022-01-10 06:18:54,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2009045517] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:54,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:54,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 06:18:54,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617601187] [2022-01-10 06:18:54,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:54,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 06:18:54,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:54,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 06:18:54,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 06:18:54,731 INFO L87 Difference]: Start difference. First operand 5353 states and 9142 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 06:18:58,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:58,246 INFO L93 Difference]: Finished difference Result 10719 states and 18288 transitions. [2022-01-10 06:18:58,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 06:18:58,248 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 06:18:58,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:58,305 INFO L225 Difference]: With dead ends: 10719 [2022-01-10 06:18:58,305 INFO L226 Difference]: Without dead ends: 6208 [2022-01-10 06:18:58,331 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 06:18:58,332 INFO L933 BasicCegarLoop]: 898 mSDtfsCounter, 1925 mSDsluCounter, 1990 mSDsCounter, 0 mSdLazyCounter, 4635 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1988 SdHoareTripleChecker+Valid, 2888 SdHoareTripleChecker+Invalid, 5088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 4635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:18:58,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1988 Valid, 2888 Invalid, 5088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 4635 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-01-10 06:18:58,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6208 states. [2022-01-10 06:18:58,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6208 to 5851. [2022-01-10 06:18:58,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5851 states, 4386 states have (on average 1.6260829913360693) internal successors, (7132), 4683 states have internal predecessors, (7132), 1184 states have call successors, (1184), 227 states have call predecessors, (1184), 280 states have return successors, (1564), 1144 states have call predecessors, (1564), 1179 states have call successors, (1564) [2022-01-10 06:18:58,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5851 states to 5851 states and 9880 transitions. [2022-01-10 06:18:58,650 INFO L78 Accepts]: Start accepts. Automaton has 5851 states and 9880 transitions. Word has length 98 [2022-01-10 06:18:58,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:58,650 INFO L470 AbstractCegarLoop]: Abstraction has 5851 states and 9880 transitions. [2022-01-10 06:18:58,650 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 06:18:58,650 INFO L276 IsEmpty]: Start isEmpty. Operand 5851 states and 9880 transitions. [2022-01-10 06:18:58,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-10 06:18:58,652 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:58,652 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 06:18:58,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-01-10 06:18:58,868 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 06:18:58,868 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:58,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:58,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1488725162, now seen corresponding path program 1 times [2022-01-10 06:18:58,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:58,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034138865] [2022-01-10 06:18:58,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:58,869 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:58,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:58,871 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 06:18:58,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 06:18:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:18:59,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:18:59,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:18:59,237 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 06:18:59,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:18:59,238 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:18:59,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034138865] [2022-01-10 06:18:59,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034138865] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:18:59,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:18:59,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:18:59,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923260550] [2022-01-10 06:18:59,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:18:59,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:18:59,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:18:59,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:18:59,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:18:59,239 INFO L87 Difference]: Start difference. First operand 5851 states and 9880 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 06:18:59,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:18:59,489 INFO L93 Difference]: Finished difference Result 11404 states and 19396 transitions. [2022-01-10 06:18:59,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:18:59,490 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 06:18:59,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:18:59,521 INFO L225 Difference]: With dead ends: 11404 [2022-01-10 06:18:59,521 INFO L226 Difference]: Without dead ends: 5851 [2022-01-10 06:18:59,539 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 06:18:59,540 INFO L933 BasicCegarLoop]: 845 mSDtfsCounter, 234 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 2281 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 06:18:59,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 2281 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:18:59,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5851 states. [2022-01-10 06:18:59,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5851 to 5851. [2022-01-10 06:18:59,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5851 states, 4386 states have (on average 1.6014591883264935) internal successors, (7024), 4683 states have internal predecessors, (7024), 1184 states have call successors, (1184), 227 states have call predecessors, (1184), 280 states have return successors, (1564), 1144 states have call predecessors, (1564), 1179 states have call successors, (1564) [2022-01-10 06:18:59,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5851 states to 5851 states and 9772 transitions. [2022-01-10 06:18:59,751 INFO L78 Accepts]: Start accepts. Automaton has 5851 states and 9772 transitions. Word has length 105 [2022-01-10 06:18:59,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:18:59,752 INFO L470 AbstractCegarLoop]: Abstraction has 5851 states and 9772 transitions. [2022-01-10 06:18:59,752 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 06:18:59,752 INFO L276 IsEmpty]: Start isEmpty. Operand 5851 states and 9772 transitions. [2022-01-10 06:18:59,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 06:18:59,754 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:18:59,754 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 06:18:59,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 06:18:59,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:18:59,964 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:18:59,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:18:59,966 INFO L85 PathProgramCache]: Analyzing trace with hash -47257622, now seen corresponding path program 1 times [2022-01-10 06:18:59,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:18:59,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1773145804] [2022-01-10 06:18:59,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:18:59,966 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:18:59,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:18:59,967 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:18:59,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 06:19:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:00,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 06:19:00,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:00,394 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 06:19:00,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:19:00,394 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:00,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1773145804] [2022-01-10 06:19:00,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1773145804] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:19:00,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:19:00,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:19:00,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954892242] [2022-01-10 06:19:00,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:19:00,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:19:00,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:00,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:19:00,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:19:00,395 INFO L87 Difference]: Start difference. First operand 5851 states and 9772 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 06:19:02,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:02,871 INFO L93 Difference]: Finished difference Result 11292 states and 18884 transitions. [2022-01-10 06:19:02,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 06:19:02,873 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 06:19:02,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:02,898 INFO L225 Difference]: With dead ends: 11292 [2022-01-10 06:19:02,898 INFO L226 Difference]: Without dead ends: 6396 [2022-01-10 06:19:02,911 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 06:19:02,912 INFO L933 BasicCegarLoop]: 816 mSDtfsCounter, 1966 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 2873 mSolverCounterSat, 424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2035 SdHoareTripleChecker+Valid, 1987 SdHoareTripleChecker+Invalid, 3297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 424 IncrementalHoareTripleChecker+Valid, 2873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:19:02,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2035 Valid, 1987 Invalid, 3297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [424 Valid, 2873 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 06:19:02,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6396 states. [2022-01-10 06:19:03,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6396 to 6109. [2022-01-10 06:19:03,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6109 states, 4578 states have (on average 1.5858453473132372) internal successors, (7260), 4897 states have internal predecessors, (7260), 1202 states have call successors, (1202), 255 states have call predecessors, (1202), 328 states have return successors, (1656), 1160 states have call predecessors, (1656), 1197 states have call successors, (1656) [2022-01-10 06:19:03,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6109 states to 6109 states and 10118 transitions. [2022-01-10 06:19:03,124 INFO L78 Accepts]: Start accepts. Automaton has 6109 states and 10118 transitions. Word has length 110 [2022-01-10 06:19:03,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:19:03,124 INFO L470 AbstractCegarLoop]: Abstraction has 6109 states and 10118 transitions. [2022-01-10 06:19:03,125 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 06:19:03,125 INFO L276 IsEmpty]: Start isEmpty. Operand 6109 states and 10118 transitions. [2022-01-10 06:19:03,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 06:19:03,126 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:03,126 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 06:19:03,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 06:19:03,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:19:03,337 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:03,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:03,338 INFO L85 PathProgramCache]: Analyzing trace with hash 724507033, now seen corresponding path program 1 times [2022-01-10 06:19:03,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:03,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754704639] [2022-01-10 06:19:03,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:19:03,339 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:03,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:03,340 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:19:03,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 06:19:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:03,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 06:19:03,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:03,778 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 06:19:03,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:19:03,778 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:03,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754704639] [2022-01-10 06:19:03,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754704639] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:19:03,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:19:03,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:19:03,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745032135] [2022-01-10 06:19:03,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:19:03,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:19:03,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:03,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:19:03,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:19:03,779 INFO L87 Difference]: Start difference. First operand 6109 states and 10118 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 06:19:06,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:06,165 INFO L93 Difference]: Finished difference Result 11578 states and 19166 transitions. [2022-01-10 06:19:06,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 06:19:06,167 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 06:19:06,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:06,193 INFO L225 Difference]: With dead ends: 11578 [2022-01-10 06:19:06,193 INFO L226 Difference]: Without dead ends: 6423 [2022-01-10 06:19:06,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-01-10 06:19:06,208 INFO L933 BasicCegarLoop]: 815 mSDtfsCounter, 1580 mSDsluCounter, 1582 mSDsCounter, 0 mSdLazyCounter, 3691 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1643 SdHoareTripleChecker+Valid, 2397 SdHoareTripleChecker+Invalid, 4051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 3691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:19:06,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1643 Valid, 2397 Invalid, 4051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 3691 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-10 06:19:06,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6423 states. [2022-01-10 06:19:06,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6423 to 6066. [2022-01-10 06:19:06,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6066 states, 4543 states have (on average 1.5837552278230245) internal successors, (7195), 4855 states have internal predecessors, (7195), 1200 states have call successors, (1200), 255 states have call predecessors, (1200), 322 states have return successors, (1615), 1159 states have call predecessors, (1615), 1195 states have call successors, (1615) [2022-01-10 06:19:06,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6066 states to 6066 states and 10010 transitions. [2022-01-10 06:19:06,410 INFO L78 Accepts]: Start accepts. Automaton has 6066 states and 10010 transitions. Word has length 115 [2022-01-10 06:19:06,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:19:06,411 INFO L470 AbstractCegarLoop]: Abstraction has 6066 states and 10010 transitions. [2022-01-10 06:19:06,411 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 06:19:06,411 INFO L276 IsEmpty]: Start isEmpty. Operand 6066 states and 10010 transitions. [2022-01-10 06:19:06,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 06:19:06,413 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:06,413 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 06:19:06,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 06:19:06,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:19:06,625 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:06,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:06,625 INFO L85 PathProgramCache]: Analyzing trace with hash 786546647, now seen corresponding path program 1 times [2022-01-10 06:19:06,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:06,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471959578] [2022-01-10 06:19:06,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:19:06,626 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:06,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:06,627 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:19:06,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 06:19:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:06,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:19:06,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:07,114 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 06:19:07,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:19:07,115 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:07,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471959578] [2022-01-10 06:19:07,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471959578] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:19:07,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:19:07,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 06:19:07,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224117772] [2022-01-10 06:19:07,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:19:07,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:19:07,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:07,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:19:07,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:19:07,116 INFO L87 Difference]: Start difference. First operand 6066 states and 10010 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 06:19:09,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:09,938 INFO L93 Difference]: Finished difference Result 21241 states and 36396 transitions. [2022-01-10 06:19:09,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:19:09,939 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 06:19:09,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:10,012 INFO L225 Difference]: With dead ends: 21241 [2022-01-10 06:19:10,013 INFO L226 Difference]: Without dead ends: 15220 [2022-01-10 06:19:10,036 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 06:19:10,036 INFO L933 BasicCegarLoop]: 1492 mSDtfsCounter, 2064 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 2280 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2187 SdHoareTripleChecker+Valid, 2579 SdHoareTripleChecker+Invalid, 2755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 2280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:19:10,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2187 Valid, 2579 Invalid, 2755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [475 Valid, 2280 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 06:19:10,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15220 states. [2022-01-10 06:19:10,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15220 to 15059. [2022-01-10 06:19:10,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15059 states, 10669 states have (on average 1.5655637829224858) internal successors, (16703), 11589 states have internal predecessors, (16703), 3700 states have call successors, (3700), 505 states have call predecessors, (3700), 689 states have return successors, (5179), 3647 states have call predecessors, (5179), 3695 states have call successors, (5179) [2022-01-10 06:19:10,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15059 states to 15059 states and 25582 transitions. [2022-01-10 06:19:10,806 INFO L78 Accepts]: Start accepts. Automaton has 15059 states and 25582 transitions. Word has length 115 [2022-01-10 06:19:10,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:19:10,806 INFO L470 AbstractCegarLoop]: Abstraction has 15059 states and 25582 transitions. [2022-01-10 06:19:10,806 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 06:19:10,807 INFO L276 IsEmpty]: Start isEmpty. Operand 15059 states and 25582 transitions. [2022-01-10 06:19:10,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-10 06:19:10,810 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:10,810 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 06:19:10,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 06:19:11,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:19:11,023 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:11,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:11,023 INFO L85 PathProgramCache]: Analyzing trace with hash 2118616498, now seen corresponding path program 1 times [2022-01-10 06:19:11,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:11,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478522726] [2022-01-10 06:19:11,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:19:11,024 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:11,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:11,031 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:19:11,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 06:19:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:11,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:19:11,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:11,455 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 06:19:11,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:19:11,456 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:11,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478522726] [2022-01-10 06:19:11,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478522726] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:19:11,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:19:11,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 06:19:11,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615352455] [2022-01-10 06:19:11,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:19:11,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:19:11,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:11,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:19:11,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:19:11,457 INFO L87 Difference]: Start difference. First operand 15059 states and 25582 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 06:19:15,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:15,241 INFO L93 Difference]: Finished difference Result 56410 states and 100242 transitions. [2022-01-10 06:19:15,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:19:15,242 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 06:19:15,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:15,595 INFO L225 Difference]: With dead ends: 56410 [2022-01-10 06:19:15,595 INFO L226 Difference]: Without dead ends: 41396 [2022-01-10 06:19:15,657 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 06:19:15,658 INFO L933 BasicCegarLoop]: 1494 mSDtfsCounter, 3084 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 1587 mSolverCounterSat, 726 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3206 SdHoareTripleChecker+Valid, 2247 SdHoareTripleChecker+Invalid, 2313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 726 IncrementalHoareTripleChecker+Valid, 1587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-10 06:19:15,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3206 Valid, 2247 Invalid, 2313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [726 Valid, 1587 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-10 06:19:15,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41396 states. [2022-01-10 06:19:17,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41396 to 41091. [2022-01-10 06:19:17,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41091 states, 27390 states have (on average 1.5481562614092734) internal successors, (42404), 30236 states have internal predecessors, (42404), 12180 states have call successors, (12180), 1005 states have call predecessors, (12180), 1520 states have return successors, (18013), 12190 states have call predecessors, (18013), 12175 states have call successors, (18013) [2022-01-10 06:19:17,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41091 states to 41091 states and 72597 transitions. [2022-01-10 06:19:17,942 INFO L78 Accepts]: Start accepts. Automaton has 41091 states and 72597 transitions. Word has length 116 [2022-01-10 06:19:17,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:19:17,942 INFO L470 AbstractCegarLoop]: Abstraction has 41091 states and 72597 transitions. [2022-01-10 06:19:17,945 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 06:19:17,945 INFO L276 IsEmpty]: Start isEmpty. Operand 41091 states and 72597 transitions. [2022-01-10 06:19:17,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-10 06:19:17,949 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:17,949 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 06:19:17,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-01-10 06:19:18,163 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 06:19:18,163 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:18,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:18,164 INFO L85 PathProgramCache]: Analyzing trace with hash 769786803, now seen corresponding path program 1 times [2022-01-10 06:19:18,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:18,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [889847746] [2022-01-10 06:19:18,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:19:18,164 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:18,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:18,165 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 06:19:18,167 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 06:19:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:18,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:19:18,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:18,584 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 06:19:18,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:19:18,584 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:18,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [889847746] [2022-01-10 06:19:18,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [889847746] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:19:18,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:19:18,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 06:19:18,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055929467] [2022-01-10 06:19:18,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:19:18,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:19:18,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:18,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:19:18,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:19:18,585 INFO L87 Difference]: Start difference. First operand 41091 states and 72597 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 06:19:29,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:29,421 INFO L93 Difference]: Finished difference Result 164957 states and 305793 transitions. [2022-01-10 06:19:29,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:19:29,423 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 06:19:29,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:31,006 INFO L225 Difference]: With dead ends: 164957 [2022-01-10 06:19:31,006 INFO L226 Difference]: Without dead ends: 123911 [2022-01-10 06:19:31,426 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 06:19:31,427 INFO L933 BasicCegarLoop]: 1496 mSDtfsCounter, 2571 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 1641 mSolverCounterSat, 581 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2693 SdHoareTripleChecker+Valid, 2364 SdHoareTripleChecker+Invalid, 2222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 581 IncrementalHoareTripleChecker+Valid, 1641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:19:31,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2693 Valid, 2364 Invalid, 2222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [581 Valid, 1641 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 06:19:31,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123911 states.