/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_spec8_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:29:33,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:29:33,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:29:34,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:29:34,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:29:34,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:29:34,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:29:34,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:29:34,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:29:34,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:29:34,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:29:34,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:29:34,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:29:34,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:29:34,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:29:34,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:29:34,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:29:34,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:29:34,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:29:34,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:29:34,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:29:34,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:29:34,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:29:34,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:29:34,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:29:34,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:29:34,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:29:34,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:29:34,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:29:34,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:29:34,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:29:34,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:29:34,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:29:34,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:29:34,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:29:34,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:29:34,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:29:34,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:29:34,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:29:34,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:29:34,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:29:34,063 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 06:29:34,089 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:29:34,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:29:34,089 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:29:34,089 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:29:34,090 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:29:34,090 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:29:34,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:29:34,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:29:34,091 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:29:34,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:29:34,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:29:34,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:29:34,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:29:34,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:29:34,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:29:34,092 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:29:34,092 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:29:34,092 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:29:34,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:29:34,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:29:34,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:29:34,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:29:34,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:29:34,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:29:34,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:29:34,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:29:34,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:29:34,094 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:29:34,094 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:29:34,094 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:29:34,094 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:29:34,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:29:34,094 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:29:34,094 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:29:34,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:29:34,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:29:34,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:29:34,319 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:29:34,327 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:29:34,328 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec8_product31.cil.c [2022-01-10 06:29:34,374 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e02b03fe3/63a2130b962143929bf559406ace1566/FLAGd954ff1e4 [2022-01-10 06:29:34,823 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:29:34,823 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec8_product31.cil.c [2022-01-10 06:29:34,835 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e02b03fe3/63a2130b962143929bf559406ace1566/FLAGd954ff1e4 [2022-01-10 06:29:34,848 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e02b03fe3/63a2130b962143929bf559406ace1566 [2022-01-10 06:29:34,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:29:34,851 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:29:34,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:29:34,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:29:34,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:29:34,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:29:34" (1/1) ... [2022-01-10 06:29:34,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@362b4851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:34, skipping insertion in model container [2022-01-10 06:29:34,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:29:34" (1/1) ... [2022-01-10 06:29:34,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:29:34,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:29:35,247 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_spec8_product31.cil.c[36672,36685] [2022-01-10 06:29:35,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:29:35,362 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 06:29:35,372 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:29:35,432 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_spec8_product31.cil.c[36672,36685] [2022-01-10 06:29:35,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:29:35,481 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:29:35,528 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_spec8_product31.cil.c[36672,36685] [2022-01-10 06:29:35,556 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:29:35,588 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:29:35,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:35 WrapperNode [2022-01-10 06:29:35,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:29:35,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:29:35,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:29:35,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:29:35,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:35" (1/1) ... [2022-01-10 06:29:35,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:35" (1/1) ... [2022-01-10 06:29:35,658 INFO L137 Inliner]: procedures = 134, calls = 223, calls flagged for inlining = 62, calls inlined = 57, statements flattened = 974 [2022-01-10 06:29:35,659 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:29:35,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:29:35,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:29:35,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:29:35,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:35" (1/1) ... [2022-01-10 06:29:35,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:35" (1/1) ... [2022-01-10 06:29:35,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:35" (1/1) ... [2022-01-10 06:29:35,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:35" (1/1) ... [2022-01-10 06:29:35,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:35" (1/1) ... [2022-01-10 06:29:35,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:35" (1/1) ... [2022-01-10 06:29:35,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:35" (1/1) ... [2022-01-10 06:29:35,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:29:35,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:29:35,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:29:35,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:29:35,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:35" (1/1) ... [2022-01-10 06:29:35,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:29:35,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:29:35,751 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 06:29:35,760 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 06:29:35,778 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-01-10 06:29:35,778 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-01-10 06:29:35,778 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-01-10 06:29:35,782 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-01-10 06:29:35,782 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-01-10 06:29:35,782 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-01-10 06:29:35,783 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-01-10 06:29:35,783 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-01-10 06:29:35,783 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-01-10 06:29:35,783 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-01-10 06:29:35,783 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-01-10 06:29:35,783 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-01-10 06:29:35,783 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-01-10 06:29:35,783 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-01-10 06:29:35,784 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-01-10 06:29:35,784 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-01-10 06:29:35,784 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-01-10 06:29:35,784 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-01-10 06:29:35,784 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-01-10 06:29:35,784 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-01-10 06:29:35,784 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 06:29:35,784 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-01-10 06:29:35,784 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-01-10 06:29:35,784 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-01-10 06:29:35,784 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-01-10 06:29:35,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:29:35,784 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-01-10 06:29:35,784 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-01-10 06:29:35,785 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-01-10 06:29:35,785 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-01-10 06:29:35,785 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-01-10 06:29:35,785 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-01-10 06:29:35,785 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-01-10 06:29:35,785 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-01-10 06:29:35,785 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-01-10 06:29:35,785 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-01-10 06:29:35,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:29:35,785 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-01-10 06:29:35,785 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-01-10 06:29:35,785 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-01-10 06:29:35,785 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-01-10 06:29:35,785 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-01-10 06:29:35,786 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-01-10 06:29:35,786 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-01-10 06:29:35,786 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-01-10 06:29:35,786 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-01-10 06:29:35,786 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-01-10 06:29:35,786 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-01-10 06:29:35,786 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-01-10 06:29:35,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:29:35,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:29:36,015 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:29:36,017 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:29:36,648 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:29:36,660 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:29:36,660 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 06:29:36,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:29:36 BoogieIcfgContainer [2022-01-10 06:29:36,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:29:36,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:29:36,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:29:36,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:29:36,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:29:34" (1/3) ... [2022-01-10 06:29:36,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a01d9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:29:36, skipping insertion in model container [2022-01-10 06:29:36,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:35" (2/3) ... [2022-01-10 06:29:36,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a01d9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:29:36, skipping insertion in model container [2022-01-10 06:29:36,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:29:36" (3/3) ... [2022-01-10 06:29:36,669 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec8_product31.cil.c [2022-01-10 06:29:36,673 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:29:36,673 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:29:36,715 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:29:36,721 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 06:29:36,721 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:29:36,745 INFO L276 IsEmpty]: Start isEmpty. Operand has 370 states, 286 states have (on average 1.5) internal successors, (429), 290 states have internal predecessors, (429), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-01-10 06:29:36,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 06:29:36,762 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:36,762 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:29:36,763 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:36,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:36,767 INFO L85 PathProgramCache]: Analyzing trace with hash -873528409, now seen corresponding path program 1 times [2022-01-10 06:29:36,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:36,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915878919] [2022-01-10 06:29:36,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:36,778 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:36,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:36,779 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 06:29:36,780 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 06:29:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:37,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 06:29:37,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:37,195 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-10 06:29:37,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:37,195 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:37,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915878919] [2022-01-10 06:29:37,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1915878919] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:37,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:37,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:29:37,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918874680] [2022-01-10 06:29:37,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:37,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 06:29:37,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:37,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 06:29:37,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:29:37,241 INFO L87 Difference]: Start difference. First operand has 370 states, 286 states have (on average 1.5) internal successors, (429), 290 states have internal predecessors, (429), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:29:37,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:37,278 INFO L93 Difference]: Finished difference Result 586 states and 848 transitions. [2022-01-10 06:29:37,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 06:29:37,279 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 101 [2022-01-10 06:29:37,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:37,289 INFO L225 Difference]: With dead ends: 586 [2022-01-10 06:29:37,289 INFO L226 Difference]: Without dead ends: 363 [2022-01-10 06:29:37,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 100 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 06:29:37,296 INFO L933 BasicCegarLoop]: 543 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, 543 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 06:29:37,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:37,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-01-10 06:29:37,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2022-01-10 06:29:37,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 280 states have (on average 1.4928571428571429) internal successors, (418), 283 states have internal predecessors, (418), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-01-10 06:29:37,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 535 transitions. [2022-01-10 06:29:37,367 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 535 transitions. Word has length 101 [2022-01-10 06:29:37,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:37,369 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 535 transitions. [2022-01-10 06:29:37,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:29:37,372 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 535 transitions. [2022-01-10 06:29:37,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 06:29:37,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:37,376 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:29:37,388 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 06:29:37,576 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 06:29:37,577 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:37,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:37,578 INFO L85 PathProgramCache]: Analyzing trace with hash -238493020, now seen corresponding path program 1 times [2022-01-10 06:29:37,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:37,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [897406968] [2022-01-10 06:29:37,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:37,578 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:37,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:37,579 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 06:29:37,580 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 06:29:37,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:37,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:29:37,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:37,981 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 06:29:37,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:37,982 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:37,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [897406968] [2022-01-10 06:29:37,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [897406968] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:37,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:37,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:29:37,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085955111] [2022-01-10 06:29:37,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:37,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:29:37,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:37,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:29:37,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:29:37,988 INFO L87 Difference]: Start difference. First operand 363 states and 535 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:29:38,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:38,051 INFO L93 Difference]: Finished difference Result 717 states and 1060 transitions. [2022-01-10 06:29:38,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:29:38,052 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 102 [2022-01-10 06:29:38,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:38,055 INFO L225 Difference]: With dead ends: 717 [2022-01-10 06:29:38,055 INFO L226 Difference]: Without dead ends: 365 [2022-01-10 06:29:38,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 98 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 06:29:38,057 INFO L933 BasicCegarLoop]: 526 mSDtfsCounter, 125 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1960 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 06:29:38,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 1960 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:38,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-01-10 06:29:38,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2022-01-10 06:29:38,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 281 states have (on average 1.491103202846975) internal successors, (419), 285 states have internal predecessors, (419), 59 states have call successors, (59), 23 states have call predecessors, (59), 24 states have return successors, (60), 58 states have call predecessors, (60), 58 states have call successors, (60) [2022-01-10 06:29:38,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 538 transitions. [2022-01-10 06:29:38,075 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 538 transitions. Word has length 102 [2022-01-10 06:29:38,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:38,076 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 538 transitions. [2022-01-10 06:29:38,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:29:38,076 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 538 transitions. [2022-01-10 06:29:38,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 06:29:38,078 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:38,078 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:29:38,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-01-10 06:29:38,287 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 06:29:38,287 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:38,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:38,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1799351527, now seen corresponding path program 1 times [2022-01-10 06:29:38,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:38,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1170386456] [2022-01-10 06:29:38,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:38,289 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:38,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:38,290 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 06:29:38,292 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 06:29:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:38,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:29:38,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:38,695 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 06:29:38,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:38,696 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:38,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1170386456] [2022-01-10 06:29:38,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1170386456] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:38,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:38,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:29:38,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096748033] [2022-01-10 06:29:38,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:38,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:29:38,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:38,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:29:38,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:29:38,698 INFO L87 Difference]: Start difference. First operand 365 states and 538 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:29:38,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:38,754 INFO L93 Difference]: Finished difference Result 719 states and 1064 transitions. [2022-01-10 06:29:38,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:29:38,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 103 [2022-01-10 06:29:38,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:38,757 INFO L225 Difference]: With dead ends: 719 [2022-01-10 06:29:38,757 INFO L226 Difference]: Without dead ends: 367 [2022-01-10 06:29:38,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 99 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 06:29:38,759 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 124 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1949 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 06:29:38,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1949 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:38,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-01-10 06:29:38,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2022-01-10 06:29:38,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 282 states have (on average 1.4893617021276595) internal successors, (420), 287 states have internal predecessors, (420), 59 states have call successors, (59), 23 states have call predecessors, (59), 25 states have return successors, (64), 58 states have call predecessors, (64), 58 states have call successors, (64) [2022-01-10 06:29:38,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 543 transitions. [2022-01-10 06:29:38,774 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 543 transitions. Word has length 103 [2022-01-10 06:29:38,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:38,774 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 543 transitions. [2022-01-10 06:29:38,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:29:38,774 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 543 transitions. [2022-01-10 06:29:38,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 06:29:38,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:38,776 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-01-10 06:29:38,787 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 06:29:38,987 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 06:29:38,987 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:38,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:38,988 INFO L85 PathProgramCache]: Analyzing trace with hash 543209139, now seen corresponding path program 1 times [2022-01-10 06:29:38,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:38,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990447614] [2022-01-10 06:29:38,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:38,989 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:38,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:38,990 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 06:29:39,023 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 06:29:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:39,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:29:39,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:39,365 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 06:29:39,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:39,365 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:39,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990447614] [2022-01-10 06:29:39,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [990447614] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:39,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:39,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:29:39,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156768126] [2022-01-10 06:29:39,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:39,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:29:39,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:39,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:29:39,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:29:39,373 INFO L87 Difference]: Start difference. First operand 367 states and 543 transitions. Second operand has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:29:39,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:39,419 INFO L93 Difference]: Finished difference Result 711 states and 1054 transitions. [2022-01-10 06:29:39,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:29:39,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 104 [2022-01-10 06:29:39,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:39,423 INFO L225 Difference]: With dead ends: 711 [2022-01-10 06:29:39,423 INFO L226 Difference]: Without dead ends: 367 [2022-01-10 06:29:39,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 100 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 06:29:39,428 INFO L933 BasicCegarLoop]: 526 mSDtfsCounter, 123 mSDsluCounter, 1437 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1963 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 06:29:39,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 1963 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:39,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-01-10 06:29:39,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2022-01-10 06:29:39,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 282 states have (on average 1.4893617021276595) internal successors, (420), 287 states have internal predecessors, (420), 59 states have call successors, (59), 23 states have call predecessors, (59), 25 states have return successors, (63), 58 states have call predecessors, (63), 58 states have call successors, (63) [2022-01-10 06:29:39,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 542 transitions. [2022-01-10 06:29:39,448 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 542 transitions. Word has length 104 [2022-01-10 06:29:39,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:39,449 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 542 transitions. [2022-01-10 06:29:39,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:29:39,449 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 542 transitions. [2022-01-10 06:29:39,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-10 06:29:39,452 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:39,452 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-01-10 06:29:39,463 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 06:29:39,663 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 06:29:39,664 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:39,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:39,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1576837622, now seen corresponding path program 2 times [2022-01-10 06:29:39,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:39,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985497058] [2022-01-10 06:29:39,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:29:39,665 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:39,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:39,666 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 06:29:39,668 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 06:29:39,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-10 06:29:39,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:29:39,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:29:39,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:39,954 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-01-10 06:29:39,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:39,954 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:39,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985497058] [2022-01-10 06:29:39,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [985497058] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:39,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:39,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:29:39,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707540886] [2022-01-10 06:29:39,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:39,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:29:39,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:39,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:29:39,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:29:39,956 INFO L87 Difference]: Start difference. First operand 367 states and 542 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:29:39,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:39,969 INFO L93 Difference]: Finished difference Result 580 states and 836 transitions. [2022-01-10 06:29:39,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:29:39,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 105 [2022-01-10 06:29:39,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:39,971 INFO L225 Difference]: With dead ends: 580 [2022-01-10 06:29:39,972 INFO L226 Difference]: Without dead ends: 370 [2022-01-10 06:29:39,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 103 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 06:29:39,973 INFO L933 BasicCegarLoop]: 533 mSDtfsCounter, 1 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1064 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 06:29:39,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1064 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:39,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-01-10 06:29:39,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 369. [2022-01-10 06:29:39,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 284 states have (on average 1.4859154929577465) internal successors, (422), 289 states have internal predecessors, (422), 59 states have call successors, (59), 23 states have call predecessors, (59), 25 states have return successors, (63), 58 states have call predecessors, (63), 58 states have call successors, (63) [2022-01-10 06:29:39,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 544 transitions. [2022-01-10 06:29:39,985 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 544 transitions. Word has length 105 [2022-01-10 06:29:39,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:39,985 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 544 transitions. [2022-01-10 06:29:39,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:29:39,985 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 544 transitions. [2022-01-10 06:29:39,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 06:29:39,986 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:39,986 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-01-10 06:29:39,996 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 06:29:40,194 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 06:29:40,195 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:40,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:40,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1511051859, now seen corresponding path program 1 times [2022-01-10 06:29:40,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:40,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578957534] [2022-01-10 06:29:40,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:40,197 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:40,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:40,198 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 06:29:40,198 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 06:29:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:40,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:29:40,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:40,540 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 06:29:40,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:40,540 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:40,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578957534] [2022-01-10 06:29:40,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578957534] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:40,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:40,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:29:40,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54878808] [2022-01-10 06:29:40,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:40,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:29:40,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:40,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:29:40,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:29:40,542 INFO L87 Difference]: Start difference. First operand 369 states and 544 transitions. Second operand has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:29:40,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:40,584 INFO L93 Difference]: Finished difference Result 717 states and 1061 transitions. [2022-01-10 06:29:40,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:29:40,585 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 111 [2022-01-10 06:29:40,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:40,587 INFO L225 Difference]: With dead ends: 717 [2022-01-10 06:29:40,587 INFO L226 Difference]: Without dead ends: 371 [2022-01-10 06:29:40,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 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 06:29:40,589 INFO L933 BasicCegarLoop]: 527 mSDtfsCounter, 121 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1965 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 06:29:40,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 1965 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:40,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-01-10 06:29:40,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2022-01-10 06:29:40,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 285 states have (on average 1.4842105263157894) internal successors, (423), 291 states have internal predecessors, (423), 59 states have call successors, (59), 23 states have call predecessors, (59), 26 states have return successors, (65), 58 states have call predecessors, (65), 58 states have call successors, (65) [2022-01-10 06:29:40,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 547 transitions. [2022-01-10 06:29:40,599 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 547 transitions. Word has length 111 [2022-01-10 06:29:40,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:40,600 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 547 transitions. [2022-01-10 06:29:40,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:29:40,600 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 547 transitions. [2022-01-10 06:29:40,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 06:29:40,601 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:40,601 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 06:29:40,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-01-10 06:29:40,810 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 06:29:40,811 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:40,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:40,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1704038921, now seen corresponding path program 1 times [2022-01-10 06:29:40,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:40,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [816508416] [2022-01-10 06:29:40,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:40,812 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:40,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:40,813 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 06:29:40,815 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 06:29:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:41,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:29:41,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:41,159 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-10 06:29:41,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:41,160 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:41,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [816508416] [2022-01-10 06:29:41,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [816508416] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:41,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:41,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:29:41,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77380682] [2022-01-10 06:29:41,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:41,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:29:41,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:41,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:29:41,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:29:41,161 INFO L87 Difference]: Start difference. First operand 371 states and 547 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:29:41,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:41,226 INFO L93 Difference]: Finished difference Result 715 states and 1056 transitions. [2022-01-10 06:29:41,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:29:41,227 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 112 [2022-01-10 06:29:41,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:41,228 INFO L225 Difference]: With dead ends: 715 [2022-01-10 06:29:41,229 INFO L226 Difference]: Without dead ends: 371 [2022-01-10 06:29:41,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 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 06:29:41,230 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 122 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1952 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 06:29:41,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 1952 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:41,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-01-10 06:29:41,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2022-01-10 06:29:41,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 285 states have (on average 1.4842105263157894) internal successors, (423), 291 states have internal predecessors, (423), 59 states have call successors, (59), 23 states have call predecessors, (59), 26 states have return successors, (64), 58 states have call predecessors, (64), 58 states have call successors, (64) [2022-01-10 06:29:41,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 546 transitions. [2022-01-10 06:29:41,242 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 546 transitions. Word has length 112 [2022-01-10 06:29:41,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:41,242 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 546 transitions. [2022-01-10 06:29:41,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:29:41,243 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 546 transitions. [2022-01-10 06:29:41,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 06:29:41,244 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:41,244 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 06:29:41,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-01-10 06:29:41,455 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 06:29:41,455 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:41,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:41,456 INFO L85 PathProgramCache]: Analyzing trace with hash -608525205, now seen corresponding path program 2 times [2022-01-10 06:29:41,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:41,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141590737] [2022-01-10 06:29:41,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:29:41,457 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:41,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:41,458 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 06:29:41,458 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 06:29:41,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 06:29:41,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:29:41,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:29:41,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:41,794 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-10 06:29:41,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:41,794 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:41,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141590737] [2022-01-10 06:29:41,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141590737] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:41,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:41,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:29:41,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775283955] [2022-01-10 06:29:41,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:41,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:29:41,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:41,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:29:41,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:29:41,796 INFO L87 Difference]: Start difference. First operand 371 states and 546 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:29:41,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:41,858 INFO L93 Difference]: Finished difference Result 717 states and 1061 transitions. [2022-01-10 06:29:41,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:29:41,859 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2022-01-10 06:29:41,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:41,861 INFO L225 Difference]: With dead ends: 717 [2022-01-10 06:29:41,861 INFO L226 Difference]: Without dead ends: 373 [2022-01-10 06:29:41,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 109 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 06:29:41,863 INFO L933 BasicCegarLoop]: 525 mSDtfsCounter, 120 mSDsluCounter, 1429 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1954 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 06:29:41,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 1954 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:41,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-01-10 06:29:41,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2022-01-10 06:29:41,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 286 states have (on average 1.4825174825174825) internal successors, (424), 293 states have internal predecessors, (424), 59 states have call successors, (59), 23 states have call predecessors, (59), 27 states have return successors, (68), 58 states have call predecessors, (68), 58 states have call successors, (68) [2022-01-10 06:29:41,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 551 transitions. [2022-01-10 06:29:41,874 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 551 transitions. Word has length 113 [2022-01-10 06:29:41,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:41,875 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 551 transitions. [2022-01-10 06:29:41,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:29:41,875 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 551 transitions. [2022-01-10 06:29:41,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 06:29:41,876 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:41,876 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-01-10 06:29:41,888 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 06:29:42,088 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 06:29:42,088 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:42,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:42,089 INFO L85 PathProgramCache]: Analyzing trace with hash -531161198, now seen corresponding path program 1 times [2022-01-10 06:29:42,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:42,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833698653] [2022-01-10 06:29:42,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:42,089 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:42,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:42,090 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 06:29:42,091 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 06:29:42,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:42,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:29:42,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:42,400 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:29:42,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:42,400 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:42,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833698653] [2022-01-10 06:29:42,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1833698653] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:42,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:42,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:29:42,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167209952] [2022-01-10 06:29:42,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:42,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:29:42,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:42,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:29:42,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:29:42,402 INFO L87 Difference]: Start difference. First operand 373 states and 551 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:29:42,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:42,429 INFO L93 Difference]: Finished difference Result 772 states and 1155 transitions. [2022-01-10 06:29:42,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:29:42,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2022-01-10 06:29:42,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:42,432 INFO L225 Difference]: With dead ends: 772 [2022-01-10 06:29:42,432 INFO L226 Difference]: Without dead ends: 430 [2022-01-10 06:29:42,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 112 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 06:29:42,433 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 107 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1039 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 06:29:42,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 1039 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:42,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-01-10 06:29:42,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 422. [2022-01-10 06:29:42,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 324 states have (on average 1.5) internal successors, (486), 331 states have internal predecessors, (486), 70 states have call successors, (70), 23 states have call predecessors, (70), 27 states have return successors, (81), 69 states have call predecessors, (81), 69 states have call successors, (81) [2022-01-10 06:29:42,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 637 transitions. [2022-01-10 06:29:42,446 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 637 transitions. Word has length 114 [2022-01-10 06:29:42,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:42,446 INFO L470 AbstractCegarLoop]: Abstraction has 422 states and 637 transitions. [2022-01-10 06:29:42,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:29:42,446 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 637 transitions. [2022-01-10 06:29:42,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 06:29:42,449 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:42,449 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 06:29:42,461 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 06:29:42,655 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 06:29:42,656 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:42,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:42,656 INFO L85 PathProgramCache]: Analyzing trace with hash -278494295, now seen corresponding path program 1 times [2022-01-10 06:29:42,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:42,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [948434652] [2022-01-10 06:29:42,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:42,657 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:42,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:42,658 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 06:29:42,659 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 06:29:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:42,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:29:42,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:42,995 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:29:42,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:29:43,167 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:29:43,167 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:43,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [948434652] [2022-01-10 06:29:43,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [948434652] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:29:43,168 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:29:43,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 06:29:43,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608869986] [2022-01-10 06:29:43,168 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:29:43,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:29:43,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:43,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:29:43,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:29:43,169 INFO L87 Difference]: Start difference. First operand 422 states and 637 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-01-10 06:29:43,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:43,397 INFO L93 Difference]: Finished difference Result 984 states and 1536 transitions. [2022-01-10 06:29:43,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:29:43,398 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 115 [2022-01-10 06:29:43,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:43,402 INFO L225 Difference]: With dead ends: 984 [2022-01-10 06:29:43,402 INFO L226 Difference]: Without dead ends: 774 [2022-01-10 06:29:43,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 224 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 06:29:43,403 INFO L933 BasicCegarLoop]: 603 mSDtfsCounter, 565 mSDsluCounter, 1782 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 2385 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:29:43,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [595 Valid, 2385 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:29:43,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2022-01-10 06:29:43,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 750. [2022-01-10 06:29:43,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 588 states have (on average 1.5714285714285714) internal successors, (924), 595 states have internal predecessors, (924), 134 states have call successors, (134), 23 states have call predecessors, (134), 27 states have return successors, (155), 133 states have call predecessors, (155), 133 states have call successors, (155) [2022-01-10 06:29:43,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1213 transitions. [2022-01-10 06:29:43,440 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1213 transitions. Word has length 115 [2022-01-10 06:29:43,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:43,440 INFO L470 AbstractCegarLoop]: Abstraction has 750 states and 1213 transitions. [2022-01-10 06:29:43,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-01-10 06:29:43,440 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1213 transitions. [2022-01-10 06:29:43,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 06:29:43,443 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:43,443 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 06:29:43,457 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 06:29:43,653 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 06:29:43,654 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:43,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:43,654 INFO L85 PathProgramCache]: Analyzing trace with hash 2073879302, now seen corresponding path program 1 times [2022-01-10 06:29:43,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:43,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [556164318] [2022-01-10 06:29:43,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:43,655 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:43,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:43,656 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 06:29:43,656 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 06:29:43,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:43,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:29:43,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:43,973 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:29:43,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:43,974 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:43,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [556164318] [2022-01-10 06:29:43,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [556164318] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:43,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:43,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:29:43,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983676652] [2022-01-10 06:29:43,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:43,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:29:43,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:43,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:29:43,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:29:43,975 INFO L87 Difference]: Start difference. First operand 750 states and 1213 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:29:44,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:44,020 INFO L93 Difference]: Finished difference Result 1765 states and 2898 transitions. [2022-01-10 06:29:44,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:29:44,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 121 [2022-01-10 06:29:44,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:44,025 INFO L225 Difference]: With dead ends: 1765 [2022-01-10 06:29:44,025 INFO L226 Difference]: Without dead ends: 1083 [2022-01-10 06:29:44,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 119 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 06:29:44,028 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 105 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1096 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 06:29:44,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 1096 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:44,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2022-01-10 06:29:44,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1075. [2022-01-10 06:29:44,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 849 states have (on average 1.5889281507656066) internal successors, (1349), 856 states have internal predecessors, (1349), 198 states have call successors, (198), 23 states have call predecessors, (198), 27 states have return successors, (229), 197 states have call predecessors, (229), 197 states have call successors, (229) [2022-01-10 06:29:44,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1776 transitions. [2022-01-10 06:29:44,064 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1776 transitions. Word has length 121 [2022-01-10 06:29:44,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:44,064 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 1776 transitions. [2022-01-10 06:29:44,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:29:44,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1776 transitions. [2022-01-10 06:29:44,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 06:29:44,068 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:44,068 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 06:29:44,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 06:29:44,278 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 06:29:44,279 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:44,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:44,279 INFO L85 PathProgramCache]: Analyzing trace with hash -337144750, now seen corresponding path program 1 times [2022-01-10 06:29:44,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:44,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896770627] [2022-01-10 06:29:44,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:44,280 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:44,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:44,281 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 06:29:44,282 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 06:29:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:44,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:29:44,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:44,591 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:29:44,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:44,592 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:44,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896770627] [2022-01-10 06:29:44,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896770627] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:44,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:44,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:29:44,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073671572] [2022-01-10 06:29:44,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:44,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:29:44,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:44,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:29:44,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:29:44,593 INFO L87 Difference]: Start difference. First operand 1075 states and 1776 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:29:44,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:44,649 INFO L93 Difference]: Finished difference Result 2545 states and 4231 transitions. [2022-01-10 06:29:44,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:29:44,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2022-01-10 06:29:44,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:44,656 INFO L225 Difference]: With dead ends: 2545 [2022-01-10 06:29:44,656 INFO L226 Difference]: Without dead ends: 1591 [2022-01-10 06:29:44,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 120 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 06:29:44,659 INFO L933 BasicCegarLoop]: 548 mSDtfsCounter, 103 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1076 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 06:29:44,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 1076 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:44,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2022-01-10 06:29:44,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 1583. [2022-01-10 06:29:44,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1262 states have (on average 1.6006339144215531) internal successors, (2020), 1269 states have internal predecessors, (2020), 293 states have call successors, (293), 23 states have call predecessors, (293), 27 states have return successors, (324), 292 states have call predecessors, (324), 292 states have call successors, (324) [2022-01-10 06:29:44,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2637 transitions. [2022-01-10 06:29:44,731 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2637 transitions. Word has length 122 [2022-01-10 06:29:44,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:44,732 INFO L470 AbstractCegarLoop]: Abstraction has 1583 states and 2637 transitions. [2022-01-10 06:29:44,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:29:44,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2637 transitions. [2022-01-10 06:29:44,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 06:29:44,738 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:44,738 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-01-10 06:29:44,747 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 06:29:44,947 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 06:29:44,947 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:44,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:44,948 INFO L85 PathProgramCache]: Analyzing trace with hash 740211048, now seen corresponding path program 1 times [2022-01-10 06:29:44,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:44,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1822072002] [2022-01-10 06:29:44,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:44,948 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:44,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:44,949 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 06:29:44,951 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 06:29:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:45,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:29:45,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:45,287 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:29:45,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:45,288 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:45,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1822072002] [2022-01-10 06:29:45,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1822072002] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:45,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:45,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:29:45,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165175039] [2022-01-10 06:29:45,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:45,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:29:45,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:45,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:29:45,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:29:45,289 INFO L87 Difference]: Start difference. First operand 1583 states and 2637 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:29:45,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:45,360 INFO L93 Difference]: Finished difference Result 3697 states and 6206 transitions. [2022-01-10 06:29:45,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:29:45,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2022-01-10 06:29:45,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:45,376 INFO L225 Difference]: With dead ends: 3697 [2022-01-10 06:29:45,377 INFO L226 Difference]: Without dead ends: 2360 [2022-01-10 06:29:45,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 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 06:29:45,383 INFO L933 BasicCegarLoop]: 546 mSDtfsCounter, 101 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1071 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 06:29:45,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 1071 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:45,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2360 states. [2022-01-10 06:29:45,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2360 to 2352. [2022-01-10 06:29:45,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2352 states, 1908 states have (on average 1.609538784067086) internal successors, (3071), 1915 states have internal predecessors, (3071), 416 states have call successors, (416), 23 states have call predecessors, (416), 27 states have return successors, (463), 415 states have call predecessors, (463), 415 states have call successors, (463) [2022-01-10 06:29:45,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 3950 transitions. [2022-01-10 06:29:45,503 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 3950 transitions. Word has length 123 [2022-01-10 06:29:45,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:45,504 INFO L470 AbstractCegarLoop]: Abstraction has 2352 states and 3950 transitions. [2022-01-10 06:29:45,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:29:45,504 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 3950 transitions. [2022-01-10 06:29:45,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 06:29:45,514 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:45,514 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-01-10 06:29:45,525 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 06:29:45,724 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 06:29:45,725 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:45,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:45,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1646975283, now seen corresponding path program 1 times [2022-01-10 06:29:45,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:45,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363606676] [2022-01-10 06:29:45,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:45,726 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:45,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:45,727 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 06:29:45,727 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 06:29:45,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:45,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:29:45,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:46,047 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:29:46,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:46,047 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:46,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363606676] [2022-01-10 06:29:46,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363606676] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:46,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:46,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:29:46,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567424335] [2022-01-10 06:29:46,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:46,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:29:46,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:46,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:29:46,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:29:46,048 INFO L87 Difference]: Start difference. First operand 2352 states and 3950 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:29:46,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:46,140 INFO L93 Difference]: Finished difference Result 5491 states and 9283 transitions. [2022-01-10 06:29:46,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:29:46,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2022-01-10 06:29:46,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:46,157 INFO L225 Difference]: With dead ends: 5491 [2022-01-10 06:29:46,157 INFO L226 Difference]: Without dead ends: 3589 [2022-01-10 06:29:46,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 122 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 06:29:46,165 INFO L933 BasicCegarLoop]: 546 mSDtfsCounter, 99 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 1071 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 06:29:46,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 1071 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:46,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2022-01-10 06:29:46,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 3581. [2022-01-10 06:29:46,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3581 states, 2958 states have (on average 1.6152805949966194) internal successors, (4778), 2965 states have internal predecessors, (4778), 595 states have call successors, (595), 23 states have call predecessors, (595), 27 states have return successors, (668), 594 states have call predecessors, (668), 594 states have call successors, (668) [2022-01-10 06:29:46,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3581 states to 3581 states and 6041 transitions. [2022-01-10 06:29:46,322 INFO L78 Accepts]: Start accepts. Automaton has 3581 states and 6041 transitions. Word has length 124 [2022-01-10 06:29:46,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:46,323 INFO L470 AbstractCegarLoop]: Abstraction has 3581 states and 6041 transitions. [2022-01-10 06:29:46,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:29:46,323 INFO L276 IsEmpty]: Start isEmpty. Operand 3581 states and 6041 transitions. [2022-01-10 06:29:46,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 06:29:46,333 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:46,333 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-01-10 06:29:46,345 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 06:29:46,543 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 06:29:46,543 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:46,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:46,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1632985316, now seen corresponding path program 1 times [2022-01-10 06:29:46,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:46,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1482098124] [2022-01-10 06:29:46,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:46,544 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:46,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:46,545 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 06:29:46,546 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 06:29:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:46,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:29:46,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:46,883 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:29:46,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:46,884 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:46,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1482098124] [2022-01-10 06:29:46,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1482098124] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:46,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:46,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:29:46,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675339812] [2022-01-10 06:29:46,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:46,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:29:46,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:46,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:29:46,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:29:46,885 INFO L87 Difference]: Start difference. First operand 3581 states and 6041 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:29:47,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:47,056 INFO L93 Difference]: Finished difference Result 8439 states and 14330 transitions. [2022-01-10 06:29:47,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:29:47,057 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2022-01-10 06:29:47,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:47,082 INFO L225 Difference]: With dead ends: 8439 [2022-01-10 06:29:47,082 INFO L226 Difference]: Without dead ends: 5620 [2022-01-10 06:29:47,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 123 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 06:29:47,098 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 97 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1080 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 06:29:47,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 1080 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:47,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5620 states. [2022-01-10 06:29:47,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5620 to 5612. [2022-01-10 06:29:47,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5612 states, 4613 states have (on average 1.6106655105137655) internal successors, (7430), 4620 states have internal predecessors, (7430), 971 states have call successors, (971), 23 states have call predecessors, (971), 27 states have return successors, (1088), 970 states have call predecessors, (1088), 970 states have call successors, (1088) [2022-01-10 06:29:47,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5612 states to 5612 states and 9489 transitions. [2022-01-10 06:29:47,391 INFO L78 Accepts]: Start accepts. Automaton has 5612 states and 9489 transitions. Word has length 125 [2022-01-10 06:29:47,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:47,392 INFO L470 AbstractCegarLoop]: Abstraction has 5612 states and 9489 transitions. [2022-01-10 06:29:47,392 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:29:47,392 INFO L276 IsEmpty]: Start isEmpty. Operand 5612 states and 9489 transitions. [2022-01-10 06:29:47,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 06:29:47,406 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:47,407 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-01-10 06:29:47,429 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 06:29:47,616 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 06:29:47,617 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:47,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:47,617 INFO L85 PathProgramCache]: Analyzing trace with hash 569175479, now seen corresponding path program 1 times [2022-01-10 06:29:47,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:47,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1500373034] [2022-01-10 06:29:47,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:47,618 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:47,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:47,619 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 06:29:47,620 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 06:29:47,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:47,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:29:47,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:47,930 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:29:47,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:47,931 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:47,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1500373034] [2022-01-10 06:29:47,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1500373034] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:47,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:47,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:29:47,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395897260] [2022-01-10 06:29:47,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:47,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:29:47,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:47,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:29:47,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:29:47,932 INFO L87 Difference]: Start difference. First operand 5612 states and 9489 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:29:48,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:48,188 INFO L93 Difference]: Finished difference Result 13776 states and 23440 transitions. [2022-01-10 06:29:48,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:29:48,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 126 [2022-01-10 06:29:48,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:48,234 INFO L225 Difference]: With dead ends: 13776 [2022-01-10 06:29:48,234 INFO L226 Difference]: Without dead ends: 9303 [2022-01-10 06:29:48,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 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 06:29:48,249 INFO L933 BasicCegarLoop]: 550 mSDtfsCounter, 95 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 1078 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 06:29:48,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 1078 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:48,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9303 states. [2022-01-10 06:29:48,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9303 to 9295. [2022-01-10 06:29:48,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9295 states, 7690 states have (on average 1.6093628088426528) internal successors, (12376), 7697 states have internal predecessors, (12376), 1577 states have call successors, (1577), 23 states have call predecessors, (1577), 27 states have return successors, (1772), 1576 states have call predecessors, (1772), 1576 states have call successors, (1772) [2022-01-10 06:29:48,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9295 states to 9295 states and 15725 transitions. [2022-01-10 06:29:48,679 INFO L78 Accepts]: Start accepts. Automaton has 9295 states and 15725 transitions. Word has length 126 [2022-01-10 06:29:48,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:48,679 INFO L470 AbstractCegarLoop]: Abstraction has 9295 states and 15725 transitions. [2022-01-10 06:29:48,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:29:48,680 INFO L276 IsEmpty]: Start isEmpty. Operand 9295 states and 15725 transitions. [2022-01-10 06:29:48,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:29:48,699 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:48,700 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-01-10 06:29:48,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 06:29:48,909 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 06:29:48,910 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:48,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:48,910 INFO L85 PathProgramCache]: Analyzing trace with hash 856995474, now seen corresponding path program 1 times [2022-01-10 06:29:48,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:48,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494763970] [2022-01-10 06:29:48,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:48,911 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:48,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:48,912 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 06:29:48,914 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 06:29:49,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:49,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:29:49,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:49,226 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:29:49,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:49,226 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:49,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [494763970] [2022-01-10 06:29:49,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [494763970] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:49,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:49,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:29:49,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397997011] [2022-01-10 06:29:49,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:49,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:29:49,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:49,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:29:49,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:29:49,228 INFO L87 Difference]: Start difference. First operand 9295 states and 15725 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:29:49,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:49,681 INFO L93 Difference]: Finished difference Result 23960 states and 40705 transitions. [2022-01-10 06:29:49,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:29:49,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2022-01-10 06:29:49,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:49,742 INFO L225 Difference]: With dead ends: 23960 [2022-01-10 06:29:49,743 INFO L226 Difference]: Without dead ends: 16256 [2022-01-10 06:29:49,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 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 06:29:49,769 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 93 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1088 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 06:29:49,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 1088 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:49,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16256 states. [2022-01-10 06:29:50,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16256 to 16248. [2022-01-10 06:29:50,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16248 states, 13440 states have (on average 1.6010416666666667) internal successors, (21518), 13447 states have internal predecessors, (21518), 2780 states have call successors, (2780), 23 states have call predecessors, (2780), 27 states have return successors, (3119), 2779 states have call predecessors, (3119), 2779 states have call successors, (3119) [2022-01-10 06:29:50,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16248 states to 16248 states and 27417 transitions. [2022-01-10 06:29:50,440 INFO L78 Accepts]: Start accepts. Automaton has 16248 states and 27417 transitions. Word has length 127 [2022-01-10 06:29:50,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:50,441 INFO L470 AbstractCegarLoop]: Abstraction has 16248 states and 27417 transitions. [2022-01-10 06:29:50,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:29:50,441 INFO L276 IsEmpty]: Start isEmpty. Operand 16248 states and 27417 transitions. [2022-01-10 06:29:50,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 06:29:50,470 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:50,470 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-01-10 06:29:50,481 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 06:29:50,679 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 06:29:50,680 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:50,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:50,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1671109704, now seen corresponding path program 1 times [2022-01-10 06:29:50,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:50,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143183744] [2022-01-10 06:29:50,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:50,681 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:50,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:50,682 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 06:29:50,685 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 06:29:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:50,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:29:50,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:51,092 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:29:51,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:51,092 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:51,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143183744] [2022-01-10 06:29:51,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143183744] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:51,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:51,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:29:51,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788073615] [2022-01-10 06:29:51,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:51,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:29:51,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:51,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:29:51,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:29:51,095 INFO L87 Difference]: Start difference. First operand 16248 states and 27417 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:29:51,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:51,928 INFO L93 Difference]: Finished difference Result 42926 states and 72764 transitions. [2022-01-10 06:29:51,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:29:51,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2022-01-10 06:29:51,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:52,018 INFO L225 Difference]: With dead ends: 42926 [2022-01-10 06:29:52,018 INFO L226 Difference]: Without dead ends: 28911 [2022-01-10 06:29:52,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 126 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 06:29:52,049 INFO L933 BasicCegarLoop]: 548 mSDtfsCounter, 91 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1076 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 06:29:52,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 1076 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:52,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28911 states. [2022-01-10 06:29:53,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28911 to 28903. [2022-01-10 06:29:53,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28903 states, 24056 states have (on average 1.5971898902560693) internal successors, (38422), 24063 states have internal predecessors, (38422), 4819 states have call successors, (4819), 23 states have call predecessors, (4819), 27 states have return successors, (5432), 4818 states have call predecessors, (5432), 4818 states have call successors, (5432) [2022-01-10 06:29:53,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28903 states to 28903 states and 48673 transitions. [2022-01-10 06:29:53,310 INFO L78 Accepts]: Start accepts. Automaton has 28903 states and 48673 transitions. Word has length 128 [2022-01-10 06:29:53,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:53,311 INFO L470 AbstractCegarLoop]: Abstraction has 28903 states and 48673 transitions. [2022-01-10 06:29:53,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:29:53,311 INFO L276 IsEmpty]: Start isEmpty. Operand 28903 states and 48673 transitions. [2022-01-10 06:29:53,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-10 06:29:53,343 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:53,343 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-01-10 06:29:53,355 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 06:29:53,553 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 06:29:53,553 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:53,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:53,553 INFO L85 PathProgramCache]: Analyzing trace with hash 104454580, now seen corresponding path program 1 times [2022-01-10 06:29:53,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:53,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [415513140] [2022-01-10 06:29:53,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:53,554 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:53,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:53,555 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 06:29:53,571 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 06:29:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:53,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:29:53,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:53,927 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:29:53,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:53,927 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:53,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [415513140] [2022-01-10 06:29:53,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [415513140] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:53,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:53,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:29:53,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508750285] [2022-01-10 06:29:53,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:53,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:29:53,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:53,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:29:53,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:29:53,930 INFO L87 Difference]: Start difference. First operand 28903 states and 48673 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:29:55,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:55,389 INFO L93 Difference]: Finished difference Result 78688 states and 132991 transitions. [2022-01-10 06:29:55,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:29:55,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2022-01-10 06:29:55,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:55,611 INFO L225 Difference]: With dead ends: 78688 [2022-01-10 06:29:55,611 INFO L226 Difference]: Without dead ends: 52790 [2022-01-10 06:29:55,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 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 06:29:55,686 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 89 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1077 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 06:29:55,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 1077 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:55,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52790 states. [2022-01-10 06:29:58,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52790 to 52782. [2022-01-10 06:29:58,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52782 states, 44220 states have (on average 1.5918362731795568) internal successors, (70391), 44227 states have internal predecessors, (70391), 8534 states have call successors, (8534), 23 states have call predecessors, (8534), 27 states have return successors, (9679), 8533 states have call predecessors, (9679), 8533 states have call successors, (9679) [2022-01-10 06:29:58,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52782 states to 52782 states and 88604 transitions. [2022-01-10 06:29:58,332 INFO L78 Accepts]: Start accepts. Automaton has 52782 states and 88604 transitions. Word has length 129 [2022-01-10 06:29:58,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:58,332 INFO L470 AbstractCegarLoop]: Abstraction has 52782 states and 88604 transitions. [2022-01-10 06:29:58,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:29:58,332 INFO L276 IsEmpty]: Start isEmpty. Operand 52782 states and 88604 transitions. [2022-01-10 06:29:58,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 06:29:58,364 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:58,365 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 06:29:58,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-01-10 06:29:58,574 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 06:29:58,574 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:58,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:58,574 INFO L85 PathProgramCache]: Analyzing trace with hash 395645336, now seen corresponding path program 1 times [2022-01-10 06:29:58,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:58,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453182802] [2022-01-10 06:29:58,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:58,575 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:58,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:58,576 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 06:29:58,613 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 06:29:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:58,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:29:58,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:58,930 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:29:58,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:58,931 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:58,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453182802] [2022-01-10 06:29:58,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453182802] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:58,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:58,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:29:58,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24412250] [2022-01-10 06:29:58,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:58,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:29:58,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:58,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:29:58,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:29:58,933 INFO L87 Difference]: Start difference. First operand 52782 states and 88604 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:30:01,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:30:01,613 INFO L93 Difference]: Finished difference Result 98459 states and 165609 transitions. [2022-01-10 06:30:01,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:30:01,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 130 [2022-01-10 06:30:01,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:30:01,988 INFO L225 Difference]: With dead ends: 98459 [2022-01-10 06:30:01,988 INFO L226 Difference]: Without dead ends: 98249 [2022-01-10 06:30:02,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 128 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 06:30:02,041 INFO L933 BasicCegarLoop]: 548 mSDtfsCounter, 87 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1076 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 06:30:02,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 1076 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:30:02,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98249 states. [2022-01-10 06:30:05,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98249 to 98241. [2022-01-10 06:30:05,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98241 states, 82880 states have (on average 1.5849541505791507) internal successors, (131361), 82887 states have internal predecessors, (131361), 15333 states have call successors, (15333), 23 states have call predecessors, (15333), 27 states have return successors, (17524), 15332 states have call predecessors, (17524), 15332 states have call successors, (17524) [2022-01-10 06:30:06,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98241 states to 98241 states and 164218 transitions. [2022-01-10 06:30:06,591 INFO L78 Accepts]: Start accepts. Automaton has 98241 states and 164218 transitions. Word has length 130 [2022-01-10 06:30:06,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:30:06,591 INFO L470 AbstractCegarLoop]: Abstraction has 98241 states and 164218 transitions. [2022-01-10 06:30:06,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:30:06,592 INFO L276 IsEmpty]: Start isEmpty. Operand 98241 states and 164218 transitions. [2022-01-10 06:30:06,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 06:30:06,633 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:30:06,633 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 06:30:06,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-01-10 06:30:06,842 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 06:30:06,843 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:30:06,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:30:06,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1107027763, now seen corresponding path program 1 times [2022-01-10 06:30:06,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:30:06,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418400719] [2022-01-10 06:30:06,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:30:06,844 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:30:06,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:30:06,845 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 06:30:06,847 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 06:30:07,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:30:07,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 06:30:07,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:30:07,564 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 06:30:07,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:30:07,907 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-10 06:30:07,907 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:30:07,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418400719] [2022-01-10 06:30:07,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1418400719] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:30:07,907 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:30:07,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-01-10 06:30:07,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776618561] [2022-01-10 06:30:07,908 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:30:07,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 06:30:07,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:30:07,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 06:30:07,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-01-10 06:30:07,909 INFO L87 Difference]: Start difference. First operand 98241 states and 164218 transitions. Second operand has 16 states, 16 states have (on average 10.4375) internal successors, (167), 14 states have internal predecessors, (167), 4 states have call successors, (28), 6 states have call predecessors, (28), 9 states have return successors, (25), 6 states have call predecessors, (25), 4 states have call successors, (25) [2022-01-10 06:30:20,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:30:20,349 INFO L93 Difference]: Finished difference Result 289233 states and 490065 transitions. [2022-01-10 06:30:20,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 06:30:20,350 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.4375) internal successors, (167), 14 states have internal predecessors, (167), 4 states have call successors, (28), 6 states have call predecessors, (28), 9 states have return successors, (25), 6 states have call predecessors, (25), 4 states have call successors, (25) Word has length 131 [2022-01-10 06:30:20,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:30:22,107 INFO L225 Difference]: With dead ends: 289233 [2022-01-10 06:30:22,107 INFO L226 Difference]: Without dead ends: 289029 [2022-01-10 06:30:22,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 247 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 06:30:22,243 INFO L933 BasicCegarLoop]: 830 mSDtfsCounter, 2244 mSDsluCounter, 2002 mSDsCounter, 0 mSdLazyCounter, 5838 mSolverCounterSat, 861 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2309 SdHoareTripleChecker+Valid, 2832 SdHoareTripleChecker+Invalid, 6699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 861 IncrementalHoareTripleChecker+Valid, 5838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-01-10 06:30:22,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2309 Valid, 2832 Invalid, 6699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [861 Valid, 5838 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-01-10 06:30:22,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289029 states. [2022-01-10 06:30:32,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289029 to 196479. [2022-01-10 06:30:33,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196479 states, 165759 states have (on average 1.5849697452325364) internal successors, (262723), 165770 states have internal predecessors, (262723), 30664 states have call successors, (30664), 47 states have call predecessors, (30664), 55 states have return successors, (39410), 30665 states have call predecessors, (39410), 30662 states have call successors, (39410) [2022-01-10 06:30:34,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196479 states to 196479 states and 332797 transitions. [2022-01-10 06:30:34,067 INFO L78 Accepts]: Start accepts. Automaton has 196479 states and 332797 transitions. Word has length 131 [2022-01-10 06:30:34,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:30:34,068 INFO L470 AbstractCegarLoop]: Abstraction has 196479 states and 332797 transitions. [2022-01-10 06:30:34,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.4375) internal successors, (167), 14 states have internal predecessors, (167), 4 states have call successors, (28), 6 states have call predecessors, (28), 9 states have return successors, (25), 6 states have call predecessors, (25), 4 states have call successors, (25) [2022-01-10 06:30:34,068 INFO L276 IsEmpty]: Start isEmpty. Operand 196479 states and 332797 transitions. [2022-01-10 06:30:34,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 06:30:34,168 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:30:34,168 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-01-10 06:30:34,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 06:30:34,378 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 06:30:34,379 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:30:34,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:30:34,379 INFO L85 PathProgramCache]: Analyzing trace with hash -59804629, now seen corresponding path program 1 times [2022-01-10 06:30:34,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:30:34,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855698053] [2022-01-10 06:30:34,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:30:34,380 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:30:34,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:30:34,381 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 06:30:34,382 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 06:30:34,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:30:34,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:30:34,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:30:34,723 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 06:30:34,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:30:34,723 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:30:34,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855698053] [2022-01-10 06:30:34,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [855698053] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:30:34,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:30:34,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:30:34,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177802010] [2022-01-10 06:30:34,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:30:34,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:30:34,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:30:34,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:30:34,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:30:34,724 INFO L87 Difference]: Start difference. First operand 196479 states and 332797 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13)