/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/email_spec3_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:24:45,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:24:45,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:24:45,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:24:45,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:24:45,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:24:45,466 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:24:45,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:24:45,479 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:24:45,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:24:45,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:24:45,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:24:45,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:24:45,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:24:45,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:24:45,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:24:45,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:24:45,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:24:45,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:24:45,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:24:45,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:24:45,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:24:45,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:24:45,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:24:45,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:24:45,512 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:24:45,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:24:45,513 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:24:45,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:24:45,514 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:24:45,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:24:45,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:24:45,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:24:45,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:24:45,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:24:45,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:24:45,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:24:45,517 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:24:45,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:24:45,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:24:45,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:24:45,524 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 06:24:45,556 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:24:45,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:24:45,556 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:24:45,556 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:24:45,557 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:24:45,557 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:24:45,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:24:45,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:24:45,557 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:24:45,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:24:45,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:24:45,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:24:45,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:24:45,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:24:45,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:24:45,559 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:24:45,559 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:24:45,559 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:24:45,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:24:45,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:24:45,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:24:45,559 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:24:45,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:24:45,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:24:45,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:24:45,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:24:45,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:24:45,561 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:24:45,561 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:24:45,561 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:24:45,561 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:24:45,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:24:45,561 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:24:45,561 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:24:45,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:24:45,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:24:45,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:24:45,784 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:24:45,785 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:24:45,786 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product28.cil.c [2022-01-10 06:24:45,841 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf0041736/7fcb25e028a24b73895047729d9b5150/FLAG2a2bea95e [2022-01-10 06:24:46,238 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:24:46,238 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product28.cil.c [2022-01-10 06:24:46,254 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf0041736/7fcb25e028a24b73895047729d9b5150/FLAG2a2bea95e [2022-01-10 06:24:46,564 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf0041736/7fcb25e028a24b73895047729d9b5150 [2022-01-10 06:24:46,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:24:46,567 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:24:46,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:24:46,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:24:46,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:24:46,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:24:46" (1/1) ... [2022-01-10 06:24:46,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43253adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:24:46, skipping insertion in model container [2022-01-10 06:24:46,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:24:46" (1/1) ... [2022-01-10 06:24:46,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:24:46,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:24:46,865 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/email_spec3_product28.cil.c[6522,6535] [2022-01-10 06:24:47,073 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:24:47,090 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 06:24:47,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:24:47,113 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/email_spec3_product28.cil.c[6522,6535] [2022-01-10 06:24:47,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:24:47,176 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:24:47,193 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/email_spec3_product28.cil.c[6522,6535] [2022-01-10 06:24:47,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:24:47,283 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:24:47,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:24:47 WrapperNode [2022-01-10 06:24:47,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:24:47,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:24:47,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:24:47,285 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:24:47,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:24:47" (1/1) ... [2022-01-10 06:24:47,319 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:24:47" (1/1) ... [2022-01-10 06:24:47,378 INFO L137 Inliner]: procedures = 131, calls = 217, calls flagged for inlining = 55, calls inlined = 45, statements flattened = 834 [2022-01-10 06:24:47,379 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:24:47,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:24:47,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:24:47,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:24:47,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:24:47" (1/1) ... [2022-01-10 06:24:47,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:24:47" (1/1) ... [2022-01-10 06:24:47,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:24:47" (1/1) ... [2022-01-10 06:24:47,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:24:47" (1/1) ... [2022-01-10 06:24:47,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:24:47" (1/1) ... [2022-01-10 06:24:47,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:24:47" (1/1) ... [2022-01-10 06:24:47,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:24:47" (1/1) ... [2022-01-10 06:24:47,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:24:47,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:24:47,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:24:47,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:24:47,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:24:47" (1/1) ... [2022-01-10 06:24:47,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:24:47,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:24:47,460 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 06:24:47,462 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 06:24:47,485 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-01-10 06:24:47,485 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-01-10 06:24:47,485 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-01-10 06:24:47,485 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-01-10 06:24:47,485 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-01-10 06:24:47,485 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-01-10 06:24:47,485 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-01-10 06:24:47,486 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-01-10 06:24:47,486 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-01-10 06:24:47,486 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-01-10 06:24:47,486 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-01-10 06:24:47,486 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-01-10 06:24:47,486 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-01-10 06:24:47,486 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-01-10 06:24:47,486 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-01-10 06:24:47,486 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-01-10 06:24:47,486 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-01-10 06:24:47,486 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-01-10 06:24:47,486 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-01-10 06:24:47,486 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-01-10 06:24:47,487 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 06:24:47,487 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-01-10 06:24:47,487 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-01-10 06:24:47,487 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-01-10 06:24:47,487 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-01-10 06:24:47,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:24:47,487 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-01-10 06:24:47,487 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-01-10 06:24:47,487 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-01-10 06:24:47,487 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-01-10 06:24:47,487 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-01-10 06:24:47,487 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-01-10 06:24:47,488 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-01-10 06:24:47,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-01-10 06:24:47,488 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-01-10 06:24:47,488 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-01-10 06:24:47,488 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-01-10 06:24:47,488 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-01-10 06:24:47,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:24:47,488 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-01-10 06:24:47,488 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-01-10 06:24:47,488 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-01-10 06:24:47,488 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-01-10 06:24:47,488 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-01-10 06:24:47,488 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-01-10 06:24:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-01-10 06:24:47,489 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-01-10 06:24:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-01-10 06:24:47,489 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-01-10 06:24:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:24:47,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:24:47,667 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:24:47,668 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:24:48,309 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:24:48,322 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:24:48,322 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 06:24:48,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:24:48 BoogieIcfgContainer [2022-01-10 06:24:48,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:24:48,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:24:48,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:24:48,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:24:48,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:24:46" (1/3) ... [2022-01-10 06:24:48,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1948842c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:24:48, skipping insertion in model container [2022-01-10 06:24:48,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:24:47" (2/3) ... [2022-01-10 06:24:48,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1948842c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:24:48, skipping insertion in model container [2022-01-10 06:24:48,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:24:48" (3/3) ... [2022-01-10 06:24:48,332 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec3_product28.cil.c [2022-01-10 06:24:48,336 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:24:48,336 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:24:48,386 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:24:48,393 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 06:24:48,393 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:24:48,424 INFO L276 IsEmpty]: Start isEmpty. Operand has 338 states, 258 states have (on average 1.5155038759689923) internal successors, (391), 264 states have internal predecessors, (391), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2022-01-10 06:24:48,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:24:48,445 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:48,445 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:48,446 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:48,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:48,451 INFO L85 PathProgramCache]: Analyzing trace with hash -2126435666, now seen corresponding path program 1 times [2022-01-10 06:24:48,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:48,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [336811156] [2022-01-10 06:24:48,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:48,463 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:48,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:48,465 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 06:24:48,475 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 06:24:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:48,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 06:24:48,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:49,036 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-01-10 06:24:49,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:49,038 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:49,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [336811156] [2022-01-10 06:24:49,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [336811156] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:49,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:49,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:24:49,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119428936] [2022-01-10 06:24:49,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:49,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 06:24:49,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:49,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 06:24:49,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:24:49,073 INFO L87 Difference]: Start difference. First operand has 338 states, 258 states have (on average 1.5155038759689923) internal successors, (391), 264 states have internal predecessors, (391), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:24:49,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:49,133 INFO L93 Difference]: Finished difference Result 526 states and 764 transitions. [2022-01-10 06:24:49,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 06:24:49,135 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2022-01-10 06:24:49,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:49,144 INFO L225 Difference]: With dead ends: 526 [2022-01-10 06:24:49,144 INFO L226 Difference]: Without dead ends: 330 [2022-01-10 06:24:49,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 126 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 06:24:49,154 INFO L933 BasicCegarLoop]: 495 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, 495 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 06:24:49,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:49,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-01-10 06:24:49,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2022-01-10 06:24:49,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 252 states have (on average 1.507936507936508) internal successors, (380), 256 states have internal predecessors, (380), 55 states have call successors, (55), 23 states have call predecessors, (55), 22 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-01-10 06:24:49,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 487 transitions. [2022-01-10 06:24:49,228 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 487 transitions. Word has length 127 [2022-01-10 06:24:49,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:49,230 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 487 transitions. [2022-01-10 06:24:49,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:24:49,230 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 487 transitions. [2022-01-10 06:24:49,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 06:24:49,232 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:49,233 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:49,246 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 06:24:49,448 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 06:24:49,449 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:49,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:49,450 INFO L85 PathProgramCache]: Analyzing trace with hash -2060039681, now seen corresponding path program 1 times [2022-01-10 06:24:49,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:49,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [91622459] [2022-01-10 06:24:49,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:49,451 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:49,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:49,452 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 06:24:49,455 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 06:24:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:49,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:24:49,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:49,924 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-10 06:24:49,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:49,925 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:49,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [91622459] [2022-01-10 06:24:49,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [91622459] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:49,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:49,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:24:49,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142645291] [2022-01-10 06:24:49,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:49,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:24:49,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:49,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:24:49,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:24:49,933 INFO L87 Difference]: Start difference. First operand 330 states and 487 transitions. Second operand has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-01-10 06:24:49,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:49,991 INFO L93 Difference]: Finished difference Result 651 states and 964 transitions. [2022-01-10 06:24:49,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:24:49,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 128 [2022-01-10 06:24:49,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:49,994 INFO L225 Difference]: With dead ends: 651 [2022-01-10 06:24:49,994 INFO L226 Difference]: Without dead ends: 332 [2022-01-10 06:24:49,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:24:49,997 INFO L933 BasicCegarLoop]: 478 mSDtfsCounter, 117 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:49,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 1776 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:49,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-01-10 06:24:50,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2022-01-10 06:24:50,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 253 states have (on average 1.5059288537549407) internal successors, (381), 258 states have internal predecessors, (381), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (54), 52 states have call predecessors, (54), 52 states have call successors, (54) [2022-01-10 06:24:50,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 490 transitions. [2022-01-10 06:24:50,015 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 490 transitions. Word has length 128 [2022-01-10 06:24:50,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:50,015 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 490 transitions. [2022-01-10 06:24:50,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-01-10 06:24:50,015 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 490 transitions. [2022-01-10 06:24:50,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-10 06:24:50,016 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:50,017 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:50,028 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 06:24:50,223 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 06:24:50,223 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:50,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:50,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1863954253, now seen corresponding path program 1 times [2022-01-10 06:24:50,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:50,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1359804099] [2022-01-10 06:24:50,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:50,225 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:50,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:50,226 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 06:24:50,227 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 06:24:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:50,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:24:50,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:50,623 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-10 06:24:50,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:50,624 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:50,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1359804099] [2022-01-10 06:24:50,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1359804099] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:50,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:50,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:24:50,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135921815] [2022-01-10 06:24:50,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:50,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:24:50,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:50,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:24:50,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:24:50,626 INFO L87 Difference]: Start difference. First operand 332 states and 490 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-01-10 06:24:50,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:50,701 INFO L93 Difference]: Finished difference Result 653 states and 968 transitions. [2022-01-10 06:24:50,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:24:50,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2022-01-10 06:24:50,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:50,704 INFO L225 Difference]: With dead ends: 653 [2022-01-10 06:24:50,704 INFO L226 Difference]: Without dead ends: 334 [2022-01-10 06:24:50,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:24:50,706 INFO L933 BasicCegarLoop]: 476 mSDtfsCounter, 116 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:50,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 1765 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:50,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-01-10 06:24:50,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2022-01-10 06:24:50,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 254 states have (on average 1.5039370078740157) internal successors, (382), 260 states have internal predecessors, (382), 55 states have call successors, (55), 23 states have call predecessors, (55), 24 states have return successors, (58), 52 states have call predecessors, (58), 52 states have call successors, (58) [2022-01-10 06:24:50,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 495 transitions. [2022-01-10 06:24:50,747 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 495 transitions. Word has length 129 [2022-01-10 06:24:50,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:50,748 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 495 transitions. [2022-01-10 06:24:50,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-01-10 06:24:50,767 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 495 transitions. [2022-01-10 06:24:50,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 06:24:50,769 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:50,769 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:50,791 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 06:24:50,975 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 06:24:50,976 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:50,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:50,976 INFO L85 PathProgramCache]: Analyzing trace with hash 495125614, now seen corresponding path program 1 times [2022-01-10 06:24:50,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:50,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [714551295] [2022-01-10 06:24:50,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:50,977 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:50,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:50,978 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 06:24:50,984 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 06:24:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:51,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:24:51,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:51,362 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-10 06:24:51,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:51,362 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:51,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [714551295] [2022-01-10 06:24:51,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [714551295] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:51,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:51,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:24:51,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553692393] [2022-01-10 06:24:51,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:51,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:24:51,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:51,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:24:51,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:24:51,376 INFO L87 Difference]: Start difference. First operand 334 states and 495 transitions. Second operand has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-01-10 06:24:51,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:51,437 INFO L93 Difference]: Finished difference Result 645 states and 958 transitions. [2022-01-10 06:24:51,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:24:51,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 130 [2022-01-10 06:24:51,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:51,440 INFO L225 Difference]: With dead ends: 645 [2022-01-10 06:24:51,440 INFO L226 Difference]: Without dead ends: 334 [2022-01-10 06:24:51,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:24:51,447 INFO L933 BasicCegarLoop]: 478 mSDtfsCounter, 115 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:51,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 1779 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:51,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-01-10 06:24:51,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2022-01-10 06:24:51,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 254 states have (on average 1.5039370078740157) internal successors, (382), 260 states have internal predecessors, (382), 55 states have call successors, (55), 23 states have call predecessors, (55), 24 states have return successors, (57), 52 states have call predecessors, (57), 52 states have call successors, (57) [2022-01-10 06:24:51,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 494 transitions. [2022-01-10 06:24:51,498 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 494 transitions. Word has length 130 [2022-01-10 06:24:51,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:51,498 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 494 transitions. [2022-01-10 06:24:51,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-01-10 06:24:51,499 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 494 transitions. [2022-01-10 06:24:51,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 06:24:51,500 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:51,500 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:51,513 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 06:24:51,701 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 06:24:51,701 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:51,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:51,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1433240350, now seen corresponding path program 2 times [2022-01-10 06:24:51,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:51,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2018821729] [2022-01-10 06:24:51,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:24:51,702 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:51,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:51,707 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 06:24:51,708 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 06:24:51,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-10 06:24:51,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:24:51,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:24:51,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:52,062 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-01-10 06:24:52,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:52,062 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:52,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2018821729] [2022-01-10 06:24:52,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2018821729] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:52,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:52,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:24:52,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639961200] [2022-01-10 06:24:52,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:52,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:24:52,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:52,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:24:52,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:52,064 INFO L87 Difference]: Start difference. First operand 334 states and 494 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:24:52,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:52,078 INFO L93 Difference]: Finished difference Result 519 states and 748 transitions. [2022-01-10 06:24:52,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:24:52,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 131 [2022-01-10 06:24:52,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:52,081 INFO L225 Difference]: With dead ends: 519 [2022-01-10 06:24:52,081 INFO L226 Difference]: Without dead ends: 337 [2022-01-10 06:24:52,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:52,082 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 1 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:52,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 968 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:52,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-01-10 06:24:52,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 336. [2022-01-10 06:24:52,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 256 states have (on average 1.5) internal successors, (384), 262 states have internal predecessors, (384), 55 states have call successors, (55), 23 states have call predecessors, (55), 24 states have return successors, (57), 52 states have call predecessors, (57), 52 states have call successors, (57) [2022-01-10 06:24:52,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 496 transitions. [2022-01-10 06:24:52,093 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 496 transitions. Word has length 131 [2022-01-10 06:24:52,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:52,093 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 496 transitions. [2022-01-10 06:24:52,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:24:52,094 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 496 transitions. [2022-01-10 06:24:52,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-10 06:24:52,095 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:52,095 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:52,106 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 06:24:52,304 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 06:24:52,304 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:52,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:52,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1709767975, now seen corresponding path program 1 times [2022-01-10 06:24:52,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:52,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273214745] [2022-01-10 06:24:52,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:52,306 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:52,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:52,307 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 06:24:52,308 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 06:24:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:52,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:24:52,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:52,683 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-01-10 06:24:52,683 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:52,684 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:52,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273214745] [2022-01-10 06:24:52,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273214745] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:52,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:52,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:24:52,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371668117] [2022-01-10 06:24:52,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:52,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:24:52,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:52,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:24:52,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:24:52,685 INFO L87 Difference]: Start difference. First operand 336 states and 496 transitions. Second operand has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-01-10 06:24:52,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:52,730 INFO L93 Difference]: Finished difference Result 651 states and 965 transitions. [2022-01-10 06:24:52,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:24:52,731 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 137 [2022-01-10 06:24:52,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:52,733 INFO L225 Difference]: With dead ends: 651 [2022-01-10 06:24:52,733 INFO L226 Difference]: Without dead ends: 338 [2022-01-10 06:24:52,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:24:52,735 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 113 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:52,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 1781 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:52,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-01-10 06:24:52,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2022-01-10 06:24:52,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 257 states have (on average 1.4980544747081712) internal successors, (385), 264 states have internal predecessors, (385), 55 states have call successors, (55), 23 states have call predecessors, (55), 25 states have return successors, (59), 52 states have call predecessors, (59), 52 states have call successors, (59) [2022-01-10 06:24:52,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 499 transitions. [2022-01-10 06:24:52,746 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 499 transitions. Word has length 137 [2022-01-10 06:24:52,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:52,746 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 499 transitions. [2022-01-10 06:24:52,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-01-10 06:24:52,746 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 499 transitions. [2022-01-10 06:24:52,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-01-10 06:24:52,748 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:52,748 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:52,761 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 06:24:52,948 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 06:24:52,949 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:52,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:52,949 INFO L85 PathProgramCache]: Analyzing trace with hash 204904656, now seen corresponding path program 1 times [2022-01-10 06:24:52,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:52,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869710021] [2022-01-10 06:24:52,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:52,950 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:52,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:52,951 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 06:24:52,951 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 06:24:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:53,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:24:53,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:53,345 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-01-10 06:24:53,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:53,346 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:53,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869710021] [2022-01-10 06:24:53,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1869710021] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:53,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:53,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:24:53,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176676695] [2022-01-10 06:24:53,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:53,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:24:53,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:53,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:24:53,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:24:53,347 INFO L87 Difference]: Start difference. First operand 338 states and 499 transitions. Second operand has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-01-10 06:24:53,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:53,390 INFO L93 Difference]: Finished difference Result 653 states and 968 transitions. [2022-01-10 06:24:53,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:24:53,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 138 [2022-01-10 06:24:53,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:53,392 INFO L225 Difference]: With dead ends: 653 [2022-01-10 06:24:53,392 INFO L226 Difference]: Without dead ends: 340 [2022-01-10 06:24:53,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:24:53,393 INFO L933 BasicCegarLoop]: 478 mSDtfsCounter, 113 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:53,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 1779 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:53,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-01-10 06:24:53,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 338. [2022-01-10 06:24:53,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 257 states have (on average 1.4980544747081712) internal successors, (385), 264 states have internal predecessors, (385), 55 states have call successors, (55), 23 states have call predecessors, (55), 25 states have return successors, (59), 52 states have call predecessors, (59), 52 states have call successors, (59) [2022-01-10 06:24:53,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 499 transitions. [2022-01-10 06:24:53,403 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 499 transitions. Word has length 138 [2022-01-10 06:24:53,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:53,403 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 499 transitions. [2022-01-10 06:24:53,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-01-10 06:24:53,403 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 499 transitions. [2022-01-10 06:24:53,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-01-10 06:24:53,405 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:53,405 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:53,417 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 06:24:53,616 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 06:24:53,616 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:53,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:53,616 INFO L85 PathProgramCache]: Analyzing trace with hash 2071613330, now seen corresponding path program 1 times [2022-01-10 06:24:53,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:53,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647780747] [2022-01-10 06:24:53,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:53,617 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:53,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:53,618 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 06:24:53,619 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 06:24:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:53,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:24:53,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:54,011 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 06:24:54,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:54,012 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:54,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647780747] [2022-01-10 06:24:54,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647780747] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:54,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:54,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:24:54,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239080097] [2022-01-10 06:24:54,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:54,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:24:54,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:54,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:24:54,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:24:54,013 INFO L87 Difference]: Start difference. First operand 338 states and 499 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-01-10 06:24:54,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:54,064 INFO L93 Difference]: Finished difference Result 649 states and 960 transitions. [2022-01-10 06:24:54,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:24:54,064 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 138 [2022-01-10 06:24:54,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:54,066 INFO L225 Difference]: With dead ends: 649 [2022-01-10 06:24:54,066 INFO L226 Difference]: Without dead ends: 338 [2022-01-10 06:24:54,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:24:54,067 INFO L933 BasicCegarLoop]: 476 mSDtfsCounter, 114 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:54,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 1768 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:54,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-01-10 06:24:54,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2022-01-10 06:24:54,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 257 states have (on average 1.4980544747081712) internal successors, (385), 264 states have internal predecessors, (385), 55 states have call successors, (55), 23 states have call predecessors, (55), 25 states have return successors, (58), 52 states have call predecessors, (58), 52 states have call successors, (58) [2022-01-10 06:24:54,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 498 transitions. [2022-01-10 06:24:54,077 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 498 transitions. Word has length 138 [2022-01-10 06:24:54,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:54,077 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 498 transitions. [2022-01-10 06:24:54,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-01-10 06:24:54,077 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 498 transitions. [2022-01-10 06:24:54,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-10 06:24:54,078 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:54,078 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:54,103 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 06:24:54,288 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 06:24:54,289 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:54,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:54,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1342463457, now seen corresponding path program 2 times [2022-01-10 06:24:54,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:54,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [32815207] [2022-01-10 06:24:54,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:24:54,290 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:54,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:54,291 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 06:24:54,291 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 06:24:54,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 06:24:54,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:24:54,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 06:24:54,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:54,787 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-10 06:24:54,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:24:55,150 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-01-10 06:24:55,150 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:55,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [32815207] [2022-01-10 06:24:55,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [32815207] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:24:55,150 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:24:55,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-01-10 06:24:55,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083948629] [2022-01-10 06:24:55,150 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:24:55,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 06:24:55,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:55,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 06:24:55,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-01-10 06:24:55,152 INFO L87 Difference]: Start difference. First operand 338 states and 498 transitions. Second operand has 16 states, 16 states have (on average 9.75) internal successors, (156), 14 states have internal predecessors, (156), 4 states have call successors, (35), 6 states have call predecessors, (35), 9 states have return successors, (31), 6 states have call predecessors, (31), 4 states have call successors, (31) [2022-01-10 06:24:58,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:58,275 INFO L93 Difference]: Finished difference Result 1073 states and 1585 transitions. [2022-01-10 06:24:58,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 06:24:58,275 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.75) internal successors, (156), 14 states have internal predecessors, (156), 4 states have call successors, (35), 6 states have call predecessors, (35), 9 states have return successors, (31), 6 states have call predecessors, (31), 4 states have call successors, (31) Word has length 139 [2022-01-10 06:24:58,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:58,279 INFO L225 Difference]: With dead ends: 1073 [2022-01-10 06:24:58,279 INFO L226 Difference]: Without dead ends: 899 [2022-01-10 06:24:58,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2022-01-10 06:24:58,281 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 1339 mSDsluCounter, 2150 mSDsCounter, 0 mSdLazyCounter, 4308 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 2745 SdHoareTripleChecker+Invalid, 4726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 4308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:58,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1394 Valid, 2745 Invalid, 4726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 4308 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-10 06:24:58,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2022-01-10 06:24:58,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 671. [2022-01-10 06:24:58,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 513 states have (on average 1.5029239766081872) internal successors, (771), 523 states have internal predecessors, (771), 106 states have call successors, (106), 46 states have call predecessors, (106), 51 states have return successors, (117), 105 states have call predecessors, (117), 102 states have call successors, (117) [2022-01-10 06:24:58,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 994 transitions. [2022-01-10 06:24:58,307 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 994 transitions. Word has length 139 [2022-01-10 06:24:58,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:58,308 INFO L470 AbstractCegarLoop]: Abstraction has 671 states and 994 transitions. [2022-01-10 06:24:58,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.75) internal successors, (156), 14 states have internal predecessors, (156), 4 states have call successors, (35), 6 states have call predecessors, (35), 9 states have return successors, (31), 6 states have call predecessors, (31), 4 states have call successors, (31) [2022-01-10 06:24:58,308 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 994 transitions. [2022-01-10 06:24:58,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-10 06:24:58,310 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:58,310 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:58,322 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 06:24:58,520 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 06:24:58,521 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:58,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:58,521 INFO L85 PathProgramCache]: Analyzing trace with hash -818800566, now seen corresponding path program 1 times [2022-01-10 06:24:58,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:58,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480358101] [2022-01-10 06:24:58,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:58,522 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:58,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:58,523 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 06:24:58,524 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 06:24:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:58,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:24:58,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:58,902 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 06:24:58,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:58,902 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:58,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480358101] [2022-01-10 06:24:58,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [480358101] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:58,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:58,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:24:58,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657862790] [2022-01-10 06:24:58,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:58,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:24:58,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:58,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:24:58,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:24:58,904 INFO L87 Difference]: Start difference. First operand 671 states and 994 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-01-10 06:24:58,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:58,969 INFO L93 Difference]: Finished difference Result 1305 states and 1942 transitions. [2022-01-10 06:24:58,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:24:58,970 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 140 [2022-01-10 06:24:58,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:58,973 INFO L225 Difference]: With dead ends: 1305 [2022-01-10 06:24:58,973 INFO L226 Difference]: Without dead ends: 677 [2022-01-10 06:24:58,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:24:58,975 INFO L933 BasicCegarLoop]: 477 mSDtfsCounter, 112 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1770 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 06:24:58,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 1770 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:58,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2022-01-10 06:24:58,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 675. [2022-01-10 06:24:58,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 515 states have (on average 1.5009708737864078) internal successors, (773), 527 states have internal predecessors, (773), 106 states have call successors, (106), 46 states have call predecessors, (106), 53 states have return successors, (122), 105 states have call predecessors, (122), 102 states have call successors, (122) [2022-01-10 06:24:58,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1001 transitions. [2022-01-10 06:24:58,996 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1001 transitions. Word has length 140 [2022-01-10 06:24:58,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:58,996 INFO L470 AbstractCegarLoop]: Abstraction has 675 states and 1001 transitions. [2022-01-10 06:24:58,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-01-10 06:24:58,997 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1001 transitions. [2022-01-10 06:24:58,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-10 06:24:58,998 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:58,998 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:59,009 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 06:24:59,209 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 06:24:59,209 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:59,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:59,209 INFO L85 PathProgramCache]: Analyzing trace with hash -683868260, now seen corresponding path program 1 times [2022-01-10 06:24:59,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:59,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272189916] [2022-01-10 06:24:59,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:59,210 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:59,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:59,211 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 06:24:59,212 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 06:24:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:59,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:24:59,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:59,550 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-10 06:24:59,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:59,551 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:59,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272189916] [2022-01-10 06:24:59,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272189916] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:59,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:59,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:24:59,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624850379] [2022-01-10 06:24:59,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:59,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:24:59,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:59,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:24:59,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:59,552 INFO L87 Difference]: Start difference. First operand 675 states and 1001 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:24:59,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:59,583 INFO L93 Difference]: Finished difference Result 1403 states and 2114 transitions. [2022-01-10 06:24:59,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:24:59,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 141 [2022-01-10 06:24:59,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:59,587 INFO L225 Difference]: With dead ends: 1403 [2022-01-10 06:24:59,587 INFO L226 Difference]: Without dead ends: 779 [2022-01-10 06:24:59,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:59,589 INFO L933 BasicCegarLoop]: 504 mSDtfsCounter, 99 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:59,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 945 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:59,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2022-01-10 06:24:59,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 763. [2022-01-10 06:24:59,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 581 states have (on average 1.5163511187607572) internal successors, (881), 593 states have internal predecessors, (881), 128 states have call successors, (128), 46 states have call predecessors, (128), 53 states have return successors, (152), 127 states have call predecessors, (152), 124 states have call successors, (152) [2022-01-10 06:24:59,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1161 transitions. [2022-01-10 06:24:59,614 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1161 transitions. Word has length 141 [2022-01-10 06:24:59,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:59,615 INFO L470 AbstractCegarLoop]: Abstraction has 763 states and 1161 transitions. [2022-01-10 06:24:59,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:24:59,615 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1161 transitions. [2022-01-10 06:24:59,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-10 06:24:59,617 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:59,617 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:59,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-01-10 06:24:59,825 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 06:24:59,825 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:59,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:59,826 INFO L85 PathProgramCache]: Analyzing trace with hash -993027925, now seen corresponding path program 1 times [2022-01-10 06:24:59,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:59,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068607228] [2022-01-10 06:24:59,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:59,827 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:59,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:59,828 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 06:24:59,829 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 06:25:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:00,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:25:00,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:00,200 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-10 06:25:00,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:25:00,376 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-10 06:25:00,376 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:00,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068607228] [2022-01-10 06:25:00,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068607228] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:25:00,376 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:25:00,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 06:25:00,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039327920] [2022-01-10 06:25:00,377 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:25:00,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:25:00,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:00,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:25:00,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:25:00,378 INFO L87 Difference]: Start difference. First operand 763 states and 1161 transitions. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-01-10 06:25:00,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:00,622 INFO L93 Difference]: Finished difference Result 1781 states and 2821 transitions. [2022-01-10 06:25:00,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:25:00,624 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 142 [2022-01-10 06:25:00,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:00,629 INFO L225 Difference]: With dead ends: 1781 [2022-01-10 06:25:00,629 INFO L226 Difference]: Without dead ends: 1417 [2022-01-10 06:25:00,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:25:00,632 INFO L933 BasicCegarLoop]: 550 mSDtfsCounter, 387 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 2182 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:25:00,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 2182 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:25:00,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2022-01-10 06:25:00,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 1369. [2022-01-10 06:25:00,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 1059 states have (on average 1.5835694050991502) internal successors, (1677), 1071 states have internal predecessors, (1677), 256 states have call successors, (256), 46 states have call predecessors, (256), 53 states have return successors, (320), 255 states have call predecessors, (320), 252 states have call successors, (320) [2022-01-10 06:25:00,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 2253 transitions. [2022-01-10 06:25:00,689 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 2253 transitions. Word has length 142 [2022-01-10 06:25:00,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:00,689 INFO L470 AbstractCegarLoop]: Abstraction has 1369 states and 2253 transitions. [2022-01-10 06:25:00,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-01-10 06:25:00,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 2253 transitions. [2022-01-10 06:25:00,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-10 06:25:00,694 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:00,695 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:25:00,707 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 06:25:00,905 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 06:25:00,905 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:00,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:00,906 INFO L85 PathProgramCache]: Analyzing trace with hash -838556306, now seen corresponding path program 1 times [2022-01-10 06:25:00,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:00,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819837045] [2022-01-10 06:25:00,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:00,906 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:00,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:00,907 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 06:25:00,908 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 06:25:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:01,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:25:01,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:01,254 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-10 06:25:01,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:01,254 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:01,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819837045] [2022-01-10 06:25:01,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819837045] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:01,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:01,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:25:01,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82886141] [2022-01-10 06:25:01,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:01,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:25:01,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:01,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:25:01,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:01,256 INFO L87 Difference]: Start difference. First operand 1369 states and 2253 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:25:01,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:01,322 INFO L93 Difference]: Finished difference Result 3229 states and 5408 transitions. [2022-01-10 06:25:01,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:25:01,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 148 [2022-01-10 06:25:01,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:01,334 INFO L225 Difference]: With dead ends: 3229 [2022-01-10 06:25:01,334 INFO L226 Difference]: Without dead ends: 1985 [2022-01-10 06:25:01,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:01,341 INFO L933 BasicCegarLoop]: 514 mSDtfsCounter, 97 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:25:01,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 999 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:01,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2022-01-10 06:25:01,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1969. [2022-01-10 06:25:01,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1969 states, 1531 states have (on average 1.5983017635532333) internal successors, (2447), 1543 states have internal predecessors, (2447), 384 states have call successors, (384), 46 states have call predecessors, (384), 53 states have return successors, (488), 383 states have call predecessors, (488), 380 states have call successors, (488) [2022-01-10 06:25:01,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1969 states to 1969 states and 3319 transitions. [2022-01-10 06:25:01,448 INFO L78 Accepts]: Start accepts. Automaton has 1969 states and 3319 transitions. Word has length 148 [2022-01-10 06:25:01,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:01,448 INFO L470 AbstractCegarLoop]: Abstraction has 1969 states and 3319 transitions. [2022-01-10 06:25:01,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:25:01,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1969 states and 3319 transitions. [2022-01-10 06:25:01,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-01-10 06:25:01,458 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:01,458 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:25:01,470 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 06:25:01,667 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 06:25:01,668 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:01,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:01,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1004351908, now seen corresponding path program 1 times [2022-01-10 06:25:01,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:01,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554851521] [2022-01-10 06:25:01,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:01,669 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:01,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:01,670 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 06:25:01,671 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 06:25:01,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:01,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:25:01,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:02,037 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-10 06:25:02,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:02,038 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:02,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554851521] [2022-01-10 06:25:02,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554851521] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:02,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:02,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:25:02,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927764439] [2022-01-10 06:25:02,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:02,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:25:02,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:02,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:25:02,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:02,039 INFO L87 Difference]: Start difference. First operand 1969 states and 3319 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:25:02,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:02,121 INFO L93 Difference]: Finished difference Result 4659 states and 7918 transitions. [2022-01-10 06:25:02,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:25:02,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 149 [2022-01-10 06:25:02,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:02,134 INFO L225 Difference]: With dead ends: 4659 [2022-01-10 06:25:02,135 INFO L226 Difference]: Without dead ends: 2921 [2022-01-10 06:25:02,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:02,141 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 95 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:25:02,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 980 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:02,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2022-01-10 06:25:02,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 2905. [2022-01-10 06:25:02,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2905 states, 2277 states have (on average 1.6078173034694774) internal successors, (3661), 2289 states have internal predecessors, (3661), 574 states have call successors, (574), 46 states have call predecessors, (574), 53 states have return successors, (710), 573 states have call predecessors, (710), 570 states have call successors, (710) [2022-01-10 06:25:02,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2905 states to 2905 states and 4945 transitions. [2022-01-10 06:25:02,301 INFO L78 Accepts]: Start accepts. Automaton has 2905 states and 4945 transitions. Word has length 149 [2022-01-10 06:25:02,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:02,301 INFO L470 AbstractCegarLoop]: Abstraction has 2905 states and 4945 transitions. [2022-01-10 06:25:02,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:25:02,301 INFO L276 IsEmpty]: Start isEmpty. Operand 2905 states and 4945 transitions. [2022-01-10 06:25:02,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-01-10 06:25:02,314 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:02,314 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:25:02,327 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 06:25:02,525 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 06:25:02,525 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:02,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:02,525 INFO L85 PathProgramCache]: Analyzing trace with hash -784656116, now seen corresponding path program 1 times [2022-01-10 06:25:02,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:02,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544823396] [2022-01-10 06:25:02,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:02,526 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:02,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:02,527 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 06:25:02,529 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 06:25:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:02,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:25:02,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:02,870 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-10 06:25:02,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:02,870 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:02,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1544823396] [2022-01-10 06:25:02,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1544823396] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:02,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:02,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:25:02,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553452724] [2022-01-10 06:25:02,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:02,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:25:02,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:02,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:25:02,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:02,871 INFO L87 Difference]: Start difference. First operand 2905 states and 4945 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:25:03,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:03,008 INFO L93 Difference]: Finished difference Result 6753 states and 11616 transitions. [2022-01-10 06:25:03,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:25:03,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 150 [2022-01-10 06:25:03,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:03,030 INFO L225 Difference]: With dead ends: 6753 [2022-01-10 06:25:03,035 INFO L226 Difference]: Without dead ends: 4329 [2022-01-10 06:25:03,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:03,048 INFO L933 BasicCegarLoop]: 498 mSDtfsCounter, 93 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:25:03,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 975 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:03,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4329 states. [2022-01-10 06:25:03,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4329 to 4313. [2022-01-10 06:25:03,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4313 states, 3439 states have (on average 1.615295143937191) internal successors, (5555), 3451 states have internal predecessors, (5555), 820 states have call successors, (820), 46 states have call predecessors, (820), 53 states have return successors, (1040), 819 states have call predecessors, (1040), 816 states have call successors, (1040) [2022-01-10 06:25:03,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4313 states to 4313 states and 7415 transitions. [2022-01-10 06:25:03,300 INFO L78 Accepts]: Start accepts. Automaton has 4313 states and 7415 transitions. Word has length 150 [2022-01-10 06:25:03,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:03,300 INFO L470 AbstractCegarLoop]: Abstraction has 4313 states and 7415 transitions. [2022-01-10 06:25:03,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:25:03,301 INFO L276 IsEmpty]: Start isEmpty. Operand 4313 states and 7415 transitions. [2022-01-10 06:25:03,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-01-10 06:25:03,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:03,320 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:25:03,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 06:25:03,530 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 06:25:03,530 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:03,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:03,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1633012325, now seen corresponding path program 1 times [2022-01-10 06:25:03,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:03,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051629282] [2022-01-10 06:25:03,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:03,531 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:03,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:03,532 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 06:25:03,533 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 06:25:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:03,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:25:03,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:03,879 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-10 06:25:03,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:03,879 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:03,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051629282] [2022-01-10 06:25:03,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2051629282] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:03,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:03,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:25:03,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32617884] [2022-01-10 06:25:03,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:03,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:25:03,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:03,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:25:03,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:03,880 INFO L87 Difference]: Start difference. First operand 4313 states and 7415 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:25:04,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:04,089 INFO L93 Difference]: Finished difference Result 9991 states and 17350 transitions. [2022-01-10 06:25:04,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:25:04,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 151 [2022-01-10 06:25:04,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:04,134 INFO L225 Difference]: With dead ends: 9991 [2022-01-10 06:25:04,134 INFO L226 Difference]: Without dead ends: 6567 [2022-01-10 06:25:04,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:04,146 INFO L933 BasicCegarLoop]: 498 mSDtfsCounter, 91 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:25:04,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 975 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:04,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6567 states. [2022-01-10 06:25:04,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6567 to 6551. [2022-01-10 06:25:04,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6551 states, 5319 states have (on average 1.6200413611581124) internal successors, (8617), 5331 states have internal predecessors, (8617), 1178 states have call successors, (1178), 46 states have call predecessors, (1178), 53 states have return successors, (1538), 1177 states have call predecessors, (1538), 1174 states have call successors, (1538) [2022-01-10 06:25:04,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6551 states to 6551 states and 11333 transitions. [2022-01-10 06:25:04,501 INFO L78 Accepts]: Start accepts. Automaton has 6551 states and 11333 transitions. Word has length 151 [2022-01-10 06:25:04,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:04,501 INFO L470 AbstractCegarLoop]: Abstraction has 6551 states and 11333 transitions. [2022-01-10 06:25:04,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:25:04,502 INFO L276 IsEmpty]: Start isEmpty. Operand 6551 states and 11333 transitions. [2022-01-10 06:25:04,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-10 06:25:04,534 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:04,534 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:25:04,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-01-10 06:25:04,744 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 06:25:04,745 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:04,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:04,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1240724656, now seen corresponding path program 1 times [2022-01-10 06:25:04,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:04,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [898807146] [2022-01-10 06:25:04,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:04,746 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:04,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:04,747 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 06:25:04,747 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 06:25:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:04,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:25:04,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:05,108 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-10 06:25:05,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:05,109 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:05,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [898807146] [2022-01-10 06:25:05,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [898807146] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:05,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:05,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:25:05,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506641631] [2022-01-10 06:25:05,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:05,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:25:05,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:05,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:25:05,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:05,110 INFO L87 Difference]: Start difference. First operand 6551 states and 11333 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:25:05,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:05,438 INFO L93 Difference]: Finished difference Result 15827 states and 27592 transitions. [2022-01-10 06:25:05,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:25:05,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 152 [2022-01-10 06:25:05,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:05,485 INFO L225 Difference]: With dead ends: 15827 [2022-01-10 06:25:05,485 INFO L226 Difference]: Without dead ends: 10629 [2022-01-10 06:25:05,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:05,503 INFO L933 BasicCegarLoop]: 506 mSDtfsCounter, 89 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:25:05,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 989 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:05,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10629 states. [2022-01-10 06:25:06,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10629 to 10613. [2022-01-10 06:25:06,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10613 states, 8629 states have (on average 1.6132807973113918) internal successors, (13921), 8641 states have internal predecessors, (13921), 1930 states have call successors, (1930), 46 states have call predecessors, (1930), 53 states have return successors, (2534), 1929 states have call predecessors, (2534), 1926 states have call successors, (2534) [2022-01-10 06:25:06,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10613 states to 10613 states and 18385 transitions. [2022-01-10 06:25:06,070 INFO L78 Accepts]: Start accepts. Automaton has 10613 states and 18385 transitions. Word has length 152 [2022-01-10 06:25:06,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:06,070 INFO L470 AbstractCegarLoop]: Abstraction has 10613 states and 18385 transitions. [2022-01-10 06:25:06,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:25:06,070 INFO L276 IsEmpty]: Start isEmpty. Operand 10613 states and 18385 transitions. [2022-01-10 06:25:06,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-01-10 06:25:06,110 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:06,110 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:25:06,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 06:25:06,321 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 06:25:06,322 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:06,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:06,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1113059159, now seen corresponding path program 1 times [2022-01-10 06:25:06,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:06,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995076463] [2022-01-10 06:25:06,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:06,323 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:06,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:06,324 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 06:25:06,327 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 06:25:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:06,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:25:06,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:06,756 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-10 06:25:06,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:06,756 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:06,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995076463] [2022-01-10 06:25:06,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995076463] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:06,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:06,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:25:06,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370355708] [2022-01-10 06:25:06,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:06,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:25:06,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:06,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:25:06,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:06,757 INFO L87 Difference]: Start difference. First operand 10613 states and 18385 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:25:07,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:07,278 INFO L93 Difference]: Finished difference Result 26111 states and 45444 transitions. [2022-01-10 06:25:07,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:25:07,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 153 [2022-01-10 06:25:07,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:07,333 INFO L225 Difference]: With dead ends: 26111 [2022-01-10 06:25:07,333 INFO L226 Difference]: Without dead ends: 17605 [2022-01-10 06:25:07,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:07,357 INFO L933 BasicCegarLoop]: 508 mSDtfsCounter, 87 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:25:07,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 989 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:07,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17605 states. [2022-01-10 06:25:08,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17605 to 17589. [2022-01-10 06:25:08,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17589 states, 14393 states have (on average 1.6111304106162718) internal successors, (23189), 14405 states have internal predecessors, (23189), 3142 states have call successors, (3142), 46 states have call predecessors, (3142), 53 states have return successors, (4046), 3141 states have call predecessors, (4046), 3138 states have call successors, (4046) [2022-01-10 06:25:08,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17589 states to 17589 states and 30377 transitions. [2022-01-10 06:25:08,258 INFO L78 Accepts]: Start accepts. Automaton has 17589 states and 30377 transitions. Word has length 153 [2022-01-10 06:25:08,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:08,259 INFO L470 AbstractCegarLoop]: Abstraction has 17589 states and 30377 transitions. [2022-01-10 06:25:08,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:25:08,259 INFO L276 IsEmpty]: Start isEmpty. Operand 17589 states and 30377 transitions. [2022-01-10 06:25:08,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-01-10 06:25:08,314 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:08,314 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:25:08,329 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 06:25:08,526 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 06:25:08,526 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:08,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:08,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1029406990, now seen corresponding path program 1 times [2022-01-10 06:25:08,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:08,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1094479749] [2022-01-10 06:25:08,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:08,527 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:08,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:08,528 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 06:25:08,569 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 06:25:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:08,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:25:08,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:08,871 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-10 06:25:08,871 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:08,871 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:08,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1094479749] [2022-01-10 06:25:08,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1094479749] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:08,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:08,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:25:08,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091973849] [2022-01-10 06:25:08,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:08,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:25:08,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:08,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:25:08,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:08,874 INFO L87 Difference]: Start difference. First operand 17589 states and 30377 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:25:09,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:09,876 INFO L93 Difference]: Finished difference Result 45429 states and 78856 transitions. [2022-01-10 06:25:09,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:25:09,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 154 [2022-01-10 06:25:09,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:10,005 INFO L225 Difference]: With dead ends: 45429 [2022-01-10 06:25:10,006 INFO L226 Difference]: Without dead ends: 30791 [2022-01-10 06:25:10,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:10,052 INFO L933 BasicCegarLoop]: 511 mSDtfsCounter, 85 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:25:10,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 995 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:10,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30791 states. [2022-01-10 06:25:11,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30791 to 30775. [2022-01-10 06:25:11,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30775 states, 25173 states have (on average 1.6017558495213124) internal successors, (40321), 25185 states have internal predecessors, (40321), 5548 states have call successors, (5548), 46 states have call predecessors, (5548), 53 states have return successors, (7158), 5547 states have call predecessors, (7158), 5544 states have call successors, (7158) [2022-01-10 06:25:11,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30775 states to 30775 states and 53027 transitions. [2022-01-10 06:25:11,767 INFO L78 Accepts]: Start accepts. Automaton has 30775 states and 53027 transitions. Word has length 154 [2022-01-10 06:25:11,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:11,767 INFO L470 AbstractCegarLoop]: Abstraction has 30775 states and 53027 transitions. [2022-01-10 06:25:11,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:25:11,767 INFO L276 IsEmpty]: Start isEmpty. Operand 30775 states and 53027 transitions. [2022-01-10 06:25:11,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-01-10 06:25:11,845 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:11,845 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:25:11,857 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 06:25:12,056 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 06:25:12,056 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:12,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:12,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1112059638, now seen corresponding path program 1 times [2022-01-10 06:25:12,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:12,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818982955] [2022-01-10 06:25:12,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:12,058 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:12,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:12,059 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 06:25:12,099 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 06:25:12,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:12,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:25:12,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:12,445 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-10 06:25:12,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:12,445 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:12,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818982955] [2022-01-10 06:25:12,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818982955] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:12,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:12,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:25:12,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716269215] [2022-01-10 06:25:12,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:12,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:25:12,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:12,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:25:12,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:12,446 INFO L87 Difference]: Start difference. First operand 30775 states and 53027 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:25:14,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:14,284 INFO L93 Difference]: Finished difference Result 81341 states and 140952 transitions. [2022-01-10 06:25:14,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:25:14,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 155 [2022-01-10 06:25:14,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:14,487 INFO L225 Difference]: With dead ends: 81341 [2022-01-10 06:25:14,487 INFO L226 Difference]: Without dead ends: 54731 [2022-01-10 06:25:14,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:14,567 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 83 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:25:14,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 980 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:14,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54731 states. [2022-01-10 06:25:17,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54731 to 54715. [2022-01-10 06:25:17,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54715 states, 45035 states have (on average 1.5973576107471967) internal successors, (71937), 45047 states have internal predecessors, (71937), 9626 states have call successors, (9626), 46 states have call predecessors, (9626), 53 states have return successors, (12590), 9625 states have call predecessors, (12590), 9622 states have call successors, (12590) [2022-01-10 06:25:17,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54715 states to 54715 states and 94153 transitions. [2022-01-10 06:25:17,482 INFO L78 Accepts]: Start accepts. Automaton has 54715 states and 94153 transitions. Word has length 155 [2022-01-10 06:25:17,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:17,483 INFO L470 AbstractCegarLoop]: Abstraction has 54715 states and 94153 transitions. [2022-01-10 06:25:17,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:25:17,483 INFO L276 IsEmpty]: Start isEmpty. Operand 54715 states and 94153 transitions. [2022-01-10 06:25:17,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 06:25:17,600 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:17,600 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:25:17,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 06:25:17,810 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 06:25:17,810 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:17,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:17,811 INFO L85 PathProgramCache]: Analyzing trace with hash -2010656148, now seen corresponding path program 1 times [2022-01-10 06:25:17,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:17,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668748339] [2022-01-10 06:25:17,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:17,811 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:17,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:17,813 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 06:25:17,813 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 06:25:18,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:18,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:25:18,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:18,228 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-10 06:25:18,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:18,229 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:18,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668748339] [2022-01-10 06:25:18,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668748339] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:18,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:18,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:25:18,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73696068] [2022-01-10 06:25:18,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:18,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:25:18,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:18,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:25:18,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:18,230 INFO L87 Difference]: Start difference. First operand 54715 states and 94153 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:25:21,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:21,838 INFO L93 Difference]: Finished difference Result 148915 states and 256316 transitions. [2022-01-10 06:25:21,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:25:21,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 156 [2022-01-10 06:25:21,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:22,229 INFO L225 Difference]: With dead ends: 148915 [2022-01-10 06:25:22,229 INFO L226 Difference]: Without dead ends: 99829 [2022-01-10 06:25:22,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:22,529 INFO L933 BasicCegarLoop]: 502 mSDtfsCounter, 81 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:25:22,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 982 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:22,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99829 states. [2022-01-10 06:25:26,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99829 to 99813. [2022-01-10 06:25:27,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99813 states, 82703 states have (on average 1.5914658476717893) internal successors, (131619), 82715 states have internal predecessors, (131619), 17056 states have call successors, (17056), 46 states have call predecessors, (17056), 53 states have return successors, (21616), 17055 states have call predecessors, (21616), 17052 states have call successors, (21616) [2022-01-10 06:25:27,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99813 states to 99813 states and 170291 transitions. [2022-01-10 06:25:27,417 INFO L78 Accepts]: Start accepts. Automaton has 99813 states and 170291 transitions. Word has length 156 [2022-01-10 06:25:27,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:27,419 INFO L470 AbstractCegarLoop]: Abstraction has 99813 states and 170291 transitions. [2022-01-10 06:25:27,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:25:27,419 INFO L276 IsEmpty]: Start isEmpty. Operand 99813 states and 170291 transitions. [2022-01-10 06:25:27,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 06:25:27,838 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:27,838 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:25:27,863 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-01-10 06:25:28,048 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 06:25:28,048 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:28,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:28,049 INFO L85 PathProgramCache]: Analyzing trace with hash 176796502, now seen corresponding path program 1 times [2022-01-10 06:25:28,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:28,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785635740] [2022-01-10 06:25:28,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:28,050 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:28,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:28,051 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 06:25:28,051 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 06:25:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:28,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:25:28,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:28,434 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-10 06:25:28,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:28,434 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:28,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785635740] [2022-01-10 06:25:28,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1785635740] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:28,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:28,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:25:28,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520135984] [2022-01-10 06:25:28,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:28,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:25:28,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:28,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:25:28,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:28,435 INFO L87 Difference]: Start difference. First operand 99813 states and 170291 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:25:34,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:34,796 INFO L93 Difference]: Finished difference Result 185881 states and 317947 transitions. [2022-01-10 06:25:34,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:25:34,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 157 [2022-01-10 06:25:34,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:35,652 INFO L225 Difference]: With dead ends: 185881 [2022-01-10 06:25:35,652 INFO L226 Difference]: Without dead ends: 185517 [2022-01-10 06:25:35,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:35,755 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 79 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:25:35,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 980 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:35,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185517 states. [2022-01-10 06:25:44,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185517 to 185501. [2022-01-10 06:25:44,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185501 states, 154793 states have (on average 1.5839928162126193) internal successors, (245191), 154805 states have internal predecessors, (245191), 30654 states have call successors, (30654), 46 states have call predecessors, (30654), 53 states have return successors, (39398), 30653 states have call predecessors, (39398), 30650 states have call successors, (39398) [2022-01-10 06:25:45,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185501 states to 185501 states and 315243 transitions. [2022-01-10 06:25:45,676 INFO L78 Accepts]: Start accepts. Automaton has 185501 states and 315243 transitions. Word has length 157 [2022-01-10 06:25:45,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:45,676 INFO L470 AbstractCegarLoop]: Abstraction has 185501 states and 315243 transitions. [2022-01-10 06:25:45,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:25:45,676 INFO L276 IsEmpty]: Start isEmpty. Operand 185501 states and 315243 transitions. [2022-01-10 06:25:45,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-10 06:25:45,858 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:45,858 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:25:45,868 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 06:25:46,059 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 06:25:46,059 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:46,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:46,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1406482253, now seen corresponding path program 1 times [2022-01-10 06:25:46,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:46,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790025057] [2022-01-10 06:25:46,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:46,060 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:46,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:46,062 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 06:25:46,062 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 06:25:46,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:46,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 06:25:46,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:46,502 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-10 06:25:46,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:25:46,898 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-01-10 06:25:46,898 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:46,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790025057] [2022-01-10 06:25:46,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790025057] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:25:46,899 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:25:46,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-01-10 06:25:46,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783521985] [2022-01-10 06:25:46,899 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:25:46,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 06:25:46,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:46,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 06:25:46,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-01-10 06:25:46,900 INFO L87 Difference]: Start difference. First operand 185501 states and 315243 transitions. Second operand has 16 states, 16 states have (on average 11.5625) internal successors, (185), 14 states have internal predecessors, (185), 4 states have call successors, (35), 6 states have call predecessors, (35), 9 states have return successors, (31), 6 states have call predecessors, (31), 4 states have call successors, (31)