./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec7_product33.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/email_spec7_product33.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f1bf577a04d9efa22571cde3b0a4348a8cf7d4cfe89b0abb5b80fa76df1bbd4f --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 04:54:40,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 04:54:40,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 04:54:40,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 04:54:40,654 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 04:54:40,655 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 04:54:40,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 04:54:40,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 04:54:40,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 04:54:40,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 04:54:40,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 04:54:40,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 04:54:40,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 04:54:40,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 04:54:40,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 04:54:40,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 04:54:40,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 04:54:40,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 04:54:40,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 04:54:40,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 04:54:40,694 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 04:54:40,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 04:54:40,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 04:54:40,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 04:54:40,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 04:54:40,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 04:54:40,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 04:54:40,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 04:54:40,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 04:54:40,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 04:54:40,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 04:54:40,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 04:54:40,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 04:54:40,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 04:54:40,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 04:54:40,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 04:54:40,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 04:54:40,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 04:54:40,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 04:54:40,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 04:54:40,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 04:54:40,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 04:54:40,717 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 04:54:40,751 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 04:54:40,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 04:54:40,752 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 04:54:40,752 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 04:54:40,753 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 04:54:40,753 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 04:54:40,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 04:54:40,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 04:54:40,754 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 04:54:40,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 04:54:40,755 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 04:54:40,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 04:54:40,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 04:54:40,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 04:54:40,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 04:54:40,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 04:54:40,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 04:54:40,766 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 04:54:40,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 04:54:40,767 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 04:54:40,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 04:54:40,767 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 04:54:40,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 04:54:40,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 04:54:40,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 04:54:40,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 04:54:40,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 04:54:40,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 04:54:40,768 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 04:54:40,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 04:54:40,769 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 04:54:40,769 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 04:54:40,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 04:54:40,770 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1bf577a04d9efa22571cde3b0a4348a8cf7d4cfe89b0abb5b80fa76df1bbd4f [2022-07-21 04:54:41,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 04:54:41,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 04:54:41,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 04:54:41,116 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 04:54:41,117 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 04:54:41,119 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec7_product33.cil.c [2022-07-21 04:54:41,179 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68efd8b0b/f7d64aef1dd74ab28109117689532132/FLAGa632eaa82 [2022-07-21 04:54:41,823 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 04:54:41,823 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec7_product33.cil.c [2022-07-21 04:54:41,853 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68efd8b0b/f7d64aef1dd74ab28109117689532132/FLAGa632eaa82 [2022-07-21 04:54:42,055 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68efd8b0b/f7d64aef1dd74ab28109117689532132 [2022-07-21 04:54:42,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 04:54:42,058 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 04:54:42,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 04:54:42,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 04:54:42,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 04:54:42,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:54:42" (1/1) ... [2022-07-21 04:54:42,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18748f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:54:42, skipping insertion in model container [2022-07-21 04:54:42,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:54:42" (1/1) ... [2022-07-21 04:54:42,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 04:54:42,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 04:54:42,518 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec7_product33.cil.c[20852,20865] [2022-07-21 04:54:42,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 04:54:42,679 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 04:54:42,726 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec7_product33.cil.c[20852,20865] [2022-07-21 04:54:42,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 04:54:42,803 INFO L208 MainTranslator]: Completed translation [2022-07-21 04:54:42,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:54:42 WrapperNode [2022-07-21 04:54:42,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 04:54:42,812 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 04:54:42,812 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 04:54:42,812 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 04:54:42,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:54:42" (1/1) ... [2022-07-21 04:54:42,872 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:54:42" (1/1) ... [2022-07-21 04:54:42,926 INFO L137 Inliner]: procedures = 134, calls = 225, calls flagged for inlining = 65, calls inlined = 60, statements flattened = 1057 [2022-07-21 04:54:42,927 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 04:54:42,939 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 04:54:42,939 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 04:54:42,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 04:54:42,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:54:42" (1/1) ... [2022-07-21 04:54:42,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:54:42" (1/1) ... [2022-07-21 04:54:42,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:54:42" (1/1) ... [2022-07-21 04:54:42,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:54:42" (1/1) ... [2022-07-21 04:54:42,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:54:42" (1/1) ... [2022-07-21 04:54:42,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:54:42" (1/1) ... [2022-07-21 04:54:42,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:54:42" (1/1) ... [2022-07-21 04:54:42,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 04:54:43,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 04:54:43,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 04:54:43,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 04:54:43,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:54:42" (1/1) ... [2022-07-21 04:54:43,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 04:54:43,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:54:43,078 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) [2022-07-21 04:54:43,094 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 [2022-07-21 04:54:43,125 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-07-21 04:54:43,125 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-07-21 04:54:43,125 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-07-21 04:54:43,125 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-07-21 04:54:43,126 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-07-21 04:54:43,126 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-07-21 04:54:43,126 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-07-21 04:54:43,127 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-07-21 04:54:43,128 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-07-21 04:54:43,128 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-07-21 04:54:43,128 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-07-21 04:54:43,129 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-07-21 04:54:43,129 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-07-21 04:54:43,129 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-07-21 04:54:43,129 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-07-21 04:54:43,129 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-07-21 04:54:43,129 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-07-21 04:54:43,129 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-07-21 04:54:43,130 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-07-21 04:54:43,130 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-07-21 04:54:43,130 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-07-21 04:54:43,130 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-07-21 04:54:43,130 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-07-21 04:54:43,130 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-07-21 04:54:43,130 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-07-21 04:54:43,130 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-07-21 04:54:43,131 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-07-21 04:54:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 04:54:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-07-21 04:54:43,131 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-07-21 04:54:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-07-21 04:54:43,132 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-07-21 04:54:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-07-21 04:54:43,132 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-07-21 04:54:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-07-21 04:54:43,133 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-07-21 04:54:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-07-21 04:54:43,133 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-07-21 04:54:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-07-21 04:54:43,133 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-07-21 04:54:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-07-21 04:54:43,134 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-07-21 04:54:43,134 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-07-21 04:54:43,134 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-07-21 04:54:43,134 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-07-21 04:54:43,134 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-07-21 04:54:43,135 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-07-21 04:54:43,135 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-07-21 04:54:43,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 04:54:43,135 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-07-21 04:54:43,135 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-07-21 04:54:43,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 04:54:43,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 04:54:43,391 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 04:54:43,407 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 04:54:44,169 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 04:54:44,178 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 04:54:44,179 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 04:54:44,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:54:44 BoogieIcfgContainer [2022-07-21 04:54:44,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 04:54:44,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 04:54:44,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 04:54:44,185 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 04:54:44,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:54:42" (1/3) ... [2022-07-21 04:54:44,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57c563f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:54:44, skipping insertion in model container [2022-07-21 04:54:44,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:54:42" (2/3) ... [2022-07-21 04:54:44,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57c563f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:54:44, skipping insertion in model container [2022-07-21 04:54:44,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:54:44" (3/3) ... [2022-07-21 04:54:44,189 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec7_product33.cil.c [2022-07-21 04:54:44,201 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 04:54:44,202 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 04:54:44,257 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 04:54:44,268 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@32eaf520, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@29264db5 [2022-07-21 04:54:44,268 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 04:54:44,274 INFO L276 IsEmpty]: Start isEmpty. Operand has 385 states, 297 states have (on average 1.5016835016835017) internal successors, (446), 301 states have internal predecessors, (446), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-07-21 04:54:44,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-21 04:54:44,293 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:54:44,294 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:54:44,294 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:54:44,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:54:44,299 INFO L85 PathProgramCache]: Analyzing trace with hash 368427250, now seen corresponding path program 1 times [2022-07-21 04:54:44,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:54:44,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950387816] [2022-07-21 04:54:44,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:54:44,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:54:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:44,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:54:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:44,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:54:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:44,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:54:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:44,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 04:54:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:44,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 04:54:44,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:44,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 04:54:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:44,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 04:54:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:44,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 04:54:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:44,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:54:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:44,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 04:54:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:44,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 04:54:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:44,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 04:54:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:44,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 04:54:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:44,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 04:54:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:44,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 04:54:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:44,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:54:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:44,876 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:54:44,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:54:44,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950387816] [2022-07-21 04:54:44,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950387816] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:54:44,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797193676] [2022-07-21 04:54:44,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:54:44,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:54:44,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:54:44,885 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:54:44,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 04:54:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:45,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 1119 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 04:54:45,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:54:45,253 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-21 04:54:45,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:54:45,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797193676] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:54:45,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:54:45,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-07-21 04:54:45,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923328255] [2022-07-21 04:54:45,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:54:45,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 04:54:45,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:54:45,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 04:54:45,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:54:45,303 INFO L87 Difference]: Start difference. First operand has 385 states, 297 states have (on average 1.5016835016835017) internal successors, (446), 301 states have internal predecessors, (446), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Second operand has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:54:45,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:54:45,364 INFO L93 Difference]: Finished difference Result 611 states and 886 transitions. [2022-07-21 04:54:45,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 04:54:45,367 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 120 [2022-07-21 04:54:45,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:54:45,385 INFO L225 Difference]: With dead ends: 611 [2022-07-21 04:54:45,386 INFO L226 Difference]: Without dead ends: 378 [2022-07-21 04:54:45,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:54:45,400 INFO L413 NwaCegarLoop]: 566 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, 566 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 [2022-07-21 04:54:45,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:54:45,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-07-21 04:54:45,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2022-07-21 04:54:45,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 291 states have (on average 1.4948453608247423) internal successors, (435), 294 states have internal predecessors, (435), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-07-21 04:54:45,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 558 transitions. [2022-07-21 04:54:45,492 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 558 transitions. Word has length 120 [2022-07-21 04:54:45,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:54:45,494 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 558 transitions. [2022-07-21 04:54:45,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:54:45,495 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 558 transitions. [2022-07-21 04:54:45,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-21 04:54:45,505 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:54:45,506 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:54:45,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 04:54:45,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-21 04:54:45,723 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:54:45,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:54:45,724 INFO L85 PathProgramCache]: Analyzing trace with hash -605373243, now seen corresponding path program 1 times [2022-07-21 04:54:45,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:54:45,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503827310] [2022-07-21 04:54:45,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:54:45,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:54:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:45,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:54:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:45,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:54:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:45,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:54:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:45,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 04:54:45,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:45,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 04:54:45,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:45,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 04:54:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:45,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 04:54:45,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:45,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:54:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:45,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:54:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:45,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 04:54:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:45,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 04:54:45,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:45,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 04:54:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:45,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 04:54:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:45,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 04:54:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:45,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 04:54:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:45,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:54:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:45,913 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:54:45,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:54:45,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503827310] [2022-07-21 04:54:45,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503827310] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:54:45,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891208678] [2022-07-21 04:54:45,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:54:45,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:54:45,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:54:45,917 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:54:45,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 04:54:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:46,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 04:54:46,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:54:46,238 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-21 04:54:46,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:54:46,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891208678] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:54:46,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:54:46,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-21 04:54:46,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990517936] [2022-07-21 04:54:46,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:54:46,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 04:54:46,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:54:46,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 04:54:46,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:54:46,242 INFO L87 Difference]: Start difference. First operand 378 states and 558 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:54:46,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:54:46,278 INFO L93 Difference]: Finished difference Result 601 states and 867 transitions. [2022-07-21 04:54:46,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 04:54:46,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 121 [2022-07-21 04:54:46,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:54:46,282 INFO L225 Difference]: With dead ends: 601 [2022-07-21 04:54:46,286 INFO L226 Difference]: Without dead ends: 381 [2022-07-21 04:54:46,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:54:46,289 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 1 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1110 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 [2022-07-21 04:54:46,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1110 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:54:46,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-07-21 04:54:46,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 380. [2022-07-21 04:54:46,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 293 states have (on average 1.4914675767918089) internal successors, (437), 296 states have internal predecessors, (437), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-07-21 04:54:46,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 560 transitions. [2022-07-21 04:54:46,315 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 560 transitions. Word has length 121 [2022-07-21 04:54:46,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:54:46,316 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 560 transitions. [2022-07-21 04:54:46,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:54:46,316 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 560 transitions. [2022-07-21 04:54:46,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-21 04:54:46,321 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:54:46,321 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:54:46,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 04:54:46,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-21 04:54:46,524 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:54:46,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:54:46,525 INFO L85 PathProgramCache]: Analyzing trace with hash -620478233, now seen corresponding path program 1 times [2022-07-21 04:54:46,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:54:46,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693628587] [2022-07-21 04:54:46,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:54:46,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:54:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:46,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:54:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:46,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:54:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:46,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:54:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:46,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 04:54:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:46,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 04:54:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:46,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 04:54:46,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:46,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 04:54:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:46,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:54:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:46,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 04:54:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:46,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 04:54:46,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:46,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 04:54:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:46,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 04:54:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:46,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 04:54:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:46,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 04:54:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:46,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-21 04:54:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:46,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:54:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:46,690 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-21 04:54:46,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:54:46,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693628587] [2022-07-21 04:54:46,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693628587] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:54:46,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873252847] [2022-07-21 04:54:46,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:54:46,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:54:46,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:54:46,693 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:54:46,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 04:54:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:46,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 1147 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:54:46,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:54:46,983 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-21 04:54:46,984 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:54:46,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873252847] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:54:46,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:54:46,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-21 04:54:46,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511274433] [2022-07-21 04:54:46,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:54:46,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 04:54:46,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:54:46,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 04:54:46,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:54:46,987 INFO L87 Difference]: Start difference. First operand 380 states and 560 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:54:47,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:54:47,033 INFO L93 Difference]: Finished difference Result 795 states and 1187 transitions. [2022-07-21 04:54:47,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 04:54:47,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 130 [2022-07-21 04:54:47,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:54:47,037 INFO L225 Difference]: With dead ends: 795 [2022-07-21 04:54:47,037 INFO L226 Difference]: Without dead ends: 442 [2022-07-21 04:54:47,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:54:47,040 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 115 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1087 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 [2022-07-21 04:54:47,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 1087 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:54:47,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-07-21 04:54:47,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 434. [2022-07-21 04:54:47,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 336 states have (on average 1.5089285714285714) internal successors, (507), 339 states have internal predecessors, (507), 73 states have call successors, (73), 24 states have call predecessors, (73), 24 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-07-21 04:54:47,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 652 transitions. [2022-07-21 04:54:47,087 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 652 transitions. Word has length 130 [2022-07-21 04:54:47,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:54:47,088 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 652 transitions. [2022-07-21 04:54:47,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:54:47,088 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 652 transitions. [2022-07-21 04:54:47,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-21 04:54:47,091 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:54:47,091 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:54:47,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 04:54:47,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:54:47,315 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:54:47,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:54:47,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1609221080, now seen corresponding path program 1 times [2022-07-21 04:54:47,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:54:47,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178186543] [2022-07-21 04:54:47,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:54:47,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:54:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:47,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:54:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:47,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:54:47,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:47,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:54:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:47,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 04:54:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:47,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 04:54:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:47,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 04:54:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:47,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 04:54:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:47,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 04:54:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:47,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:54:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:47,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 04:54:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:47,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 04:54:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:47,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 04:54:47,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:47,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 04:54:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:47,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 04:54:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:47,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 04:54:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:47,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:54:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:47,462 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-21 04:54:47,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:54:47,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178186543] [2022-07-21 04:54:47,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178186543] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:54:47,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201697348] [2022-07-21 04:54:47,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:54:47,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:54:47,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:54:47,465 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:54:47,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 04:54:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:47,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 1154 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 04:54:47,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:54:47,805 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-21 04:54:47,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:54:47,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201697348] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:54:47,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:54:47,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-07-21 04:54:47,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227740368] [2022-07-21 04:54:47,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:54:47,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:54:47,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:54:47,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:54:47,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:54:47,810 INFO L87 Difference]: Start difference. First operand 434 states and 652 transitions. Second operand has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 04:54:47,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:54:47,869 INFO L93 Difference]: Finished difference Result 859 states and 1294 transitions. [2022-07-21 04:54:47,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:54:47,870 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 131 [2022-07-21 04:54:47,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:54:47,872 INFO L225 Difference]: With dead ends: 859 [2022-07-21 04:54:47,872 INFO L226 Difference]: Without dead ends: 436 [2022-07-21 04:54:47,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:54:47,875 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 133 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 2043 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 [2022-07-21 04:54:47,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 2043 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:54:47,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-07-21 04:54:47,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 436. [2022-07-21 04:54:47,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 337 states have (on average 1.5074183976261128) internal successors, (508), 341 states have internal predecessors, (508), 73 states have call successors, (73), 24 states have call predecessors, (73), 25 states have return successors, (74), 72 states have call predecessors, (74), 72 states have call successors, (74) [2022-07-21 04:54:47,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 655 transitions. [2022-07-21 04:54:47,899 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 655 transitions. Word has length 131 [2022-07-21 04:54:47,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:54:47,900 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 655 transitions. [2022-07-21 04:54:47,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 04:54:47,900 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 655 transitions. [2022-07-21 04:54:47,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-21 04:54:47,902 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:54:47,902 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:54:47,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 04:54:48,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:54:48,124 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:54:48,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:54:48,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1843660327, now seen corresponding path program 1 times [2022-07-21 04:54:48,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:54:48,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833572983] [2022-07-21 04:54:48,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:54:48,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:54:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:48,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:54:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:48,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:54:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:48,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:54:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:48,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:54:48,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:48,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 04:54:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:48,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:54:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:48,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 04:54:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:48,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 04:54:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:48,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:54:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:48,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 04:54:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:48,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 04:54:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:48,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 04:54:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:48,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 04:54:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:48,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 04:54:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:48,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-21 04:54:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:48,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:54:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:48,286 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-21 04:54:48,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:54:48,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833572983] [2022-07-21 04:54:48,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833572983] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:54:48,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945155366] [2022-07-21 04:54:48,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:54:48,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:54:48,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:54:48,288 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:54:48,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 04:54:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:48,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 04:54:48,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:54:48,647 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-21 04:54:48,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:54:48,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945155366] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:54:48,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:54:48,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-21 04:54:48,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308053631] [2022-07-21 04:54:48,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:54:48,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:54:48,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:54:48,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:54:48,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:54:48,649 INFO L87 Difference]: Start difference. First operand 436 states and 655 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 04:54:48,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:54:48,723 INFO L93 Difference]: Finished difference Result 861 states and 1299 transitions. [2022-07-21 04:54:48,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:54:48,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 132 [2022-07-21 04:54:48,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:54:48,728 INFO L225 Difference]: With dead ends: 861 [2022-07-21 04:54:48,728 INFO L226 Difference]: Without dead ends: 438 [2022-07-21 04:54:48,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-21 04:54:48,730 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 132 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 2032 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 [2022-07-21 04:54:48,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 2032 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:54:48,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-07-21 04:54:48,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 438. [2022-07-21 04:54:48,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 338 states have (on average 1.5059171597633136) internal successors, (509), 343 states have internal predecessors, (509), 73 states have call successors, (73), 24 states have call predecessors, (73), 26 states have return successors, (79), 72 states have call predecessors, (79), 72 states have call successors, (79) [2022-07-21 04:54:48,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 661 transitions. [2022-07-21 04:54:48,751 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 661 transitions. Word has length 132 [2022-07-21 04:54:48,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:54:48,752 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 661 transitions. [2022-07-21 04:54:48,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 04:54:48,752 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 661 transitions. [2022-07-21 04:54:48,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-21 04:54:48,756 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:54:48,756 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:54:48,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-21 04:54:48,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:54:48,972 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:54:48,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:54:48,972 INFO L85 PathProgramCache]: Analyzing trace with hash 2101448143, now seen corresponding path program 1 times [2022-07-21 04:54:48,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:54:48,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160806014] [2022-07-21 04:54:48,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:54:48,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:54:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:49,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:54:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:49,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:54:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:49,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:54:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:49,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:54:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:49,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:54:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:49,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 04:54:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:49,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 04:54:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:49,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:54:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:49,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 04:54:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:49,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 04:54:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:49,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 04:54:49,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:49,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 04:54:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:49,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 04:54:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:49,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 04:54:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:49,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 04:54:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:49,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:54:49,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:49,102 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-21 04:54:49,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:54:49,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160806014] [2022-07-21 04:54:49,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160806014] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:54:49,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:54:49,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:54:49,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346525836] [2022-07-21 04:54:49,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:54:49,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:54:49,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:54:49,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:54:49,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:54:49,105 INFO L87 Difference]: Start difference. First operand 438 states and 661 transitions. Second operand has 9 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 04:54:51,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:54:51,244 INFO L93 Difference]: Finished difference Result 1064 states and 1615 transitions. [2022-07-21 04:54:51,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 04:54:51,245 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 133 [2022-07-21 04:54:51,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:54:51,250 INFO L225 Difference]: With dead ends: 1064 [2022-07-21 04:54:51,250 INFO L226 Difference]: Without dead ends: 649 [2022-07-21 04:54:51,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 04:54:51,253 INFO L413 NwaCegarLoop]: 671 mSDtfsCounter, 1436 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 2457 mSolverCounterSat, 604 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1453 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 3061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 604 IncrementalHoareTripleChecker+Valid, 2457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:54:51,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1453 Valid, 1533 Invalid, 3061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [604 Valid, 2457 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-21 04:54:51,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2022-07-21 04:54:51,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 438. [2022-07-21 04:54:51,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 338 states have (on average 1.5059171597633136) internal successors, (509), 343 states have internal predecessors, (509), 73 states have call successors, (73), 24 states have call predecessors, (73), 26 states have return successors, (78), 72 states have call predecessors, (78), 72 states have call successors, (78) [2022-07-21 04:54:51,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 660 transitions. [2022-07-21 04:54:51,296 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 660 transitions. Word has length 133 [2022-07-21 04:54:51,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:54:51,296 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 660 transitions. [2022-07-21 04:54:51,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 04:54:51,297 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 660 transitions. [2022-07-21 04:54:51,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 04:54:51,300 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:54:51,300 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:54:51,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 04:54:51,300 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:54:51,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:54:51,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1275786286, now seen corresponding path program 2 times [2022-07-21 04:54:51,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:54:51,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007449313] [2022-07-21 04:54:51,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:54:51,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:54:51,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:51,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:54:51,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:51,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:54:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:51,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:54:51,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:51,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:54:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:51,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:54:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:51,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:54:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:51,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:54:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:51,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 04:54:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:51,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 04:54:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:51,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 04:54:51,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:51,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 04:54:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:51,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 04:54:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:51,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 04:54:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:51,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-21 04:54:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:51,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 04:54:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:51,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:54:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:51,430 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-21 04:54:51,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:54:51,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007449313] [2022-07-21 04:54:51,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007449313] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:54:51,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:54:51,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:54:51,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470650787] [2022-07-21 04:54:51,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:54:51,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:54:51,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:54:51,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:54:51,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:54:51,432 INFO L87 Difference]: Start difference. First operand 438 states and 660 transitions. Second operand has 9 states, 8 states have (on average 10.375) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 04:54:53,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:54:53,411 INFO L93 Difference]: Finished difference Result 1066 states and 1618 transitions. [2022-07-21 04:54:53,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 04:54:53,412 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 134 [2022-07-21 04:54:53,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:54:53,417 INFO L225 Difference]: With dead ends: 1066 [2022-07-21 04:54:53,417 INFO L226 Difference]: Without dead ends: 651 [2022-07-21 04:54:53,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 04:54:53,420 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 1539 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 2347 mSolverCounterSat, 619 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 2966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 619 IncrementalHoareTripleChecker+Valid, 2347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 04:54:53,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1556 Valid, 1497 Invalid, 2966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [619 Valid, 2347 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 04:54:53,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2022-07-21 04:54:53,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 440. [2022-07-21 04:54:53,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 339 states have (on average 1.5044247787610618) internal successors, (510), 345 states have internal predecessors, (510), 73 states have call successors, (73), 24 states have call predecessors, (73), 27 states have return successors, (80), 72 states have call predecessors, (80), 72 states have call successors, (80) [2022-07-21 04:54:53,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 663 transitions. [2022-07-21 04:54:53,453 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 663 transitions. Word has length 134 [2022-07-21 04:54:53,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:54:53,454 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 663 transitions. [2022-07-21 04:54:53,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 04:54:53,454 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 663 transitions. [2022-07-21 04:54:53,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-21 04:54:53,456 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:54:53,456 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:54:53,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 04:54:53,457 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:54:53,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:54:53,457 INFO L85 PathProgramCache]: Analyzing trace with hash -267292556, now seen corresponding path program 1 times [2022-07-21 04:54:53,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:54:53,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008400915] [2022-07-21 04:54:53,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:54:53,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:54:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:53,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:54:53,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:53,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:54:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:53,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:54:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:53,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:54:53,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:53,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:54:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:53,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:54:53,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:53,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:54:53,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:53,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 04:54:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:53,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 04:54:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:53,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 04:54:53,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:53,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 04:54:53,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:53,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 04:54:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:53,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 04:54:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:53,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 04:54:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:53,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 04:54:53,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:53,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:54:53,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:53,624 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-21 04:54:53,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:54:53,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008400915] [2022-07-21 04:54:53,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008400915] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:54:53,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:54:53,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 04:54:53,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129176928] [2022-07-21 04:54:53,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:54:53,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 04:54:53,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:54:53,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 04:54:53,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:54:53,627 INFO L87 Difference]: Start difference. First operand 440 states and 663 transitions. Second operand has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-21 04:54:56,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:54:56,381 INFO L93 Difference]: Finished difference Result 1064 states and 1613 transitions. [2022-07-21 04:54:56,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 04:54:56,381 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 135 [2022-07-21 04:54:56,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:54:56,385 INFO L225 Difference]: With dead ends: 1064 [2022-07-21 04:54:56,386 INFO L226 Difference]: Without dead ends: 651 [2022-07-21 04:54:56,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-07-21 04:54:56,388 INFO L413 NwaCegarLoop]: 660 mSDtfsCounter, 1555 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 4423 mSolverCounterSat, 656 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 5079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 656 IncrementalHoareTripleChecker+Valid, 4423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:54:56,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1555 Valid, 1848 Invalid, 5079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [656 Valid, 4423 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-21 04:54:56,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2022-07-21 04:54:56,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 440. [2022-07-21 04:54:56,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 339 states have (on average 1.5044247787610618) internal successors, (510), 345 states have internal predecessors, (510), 73 states have call successors, (73), 24 states have call predecessors, (73), 27 states have return successors, (79), 72 states have call predecessors, (79), 72 states have call successors, (79) [2022-07-21 04:54:56,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 662 transitions. [2022-07-21 04:54:56,425 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 662 transitions. Word has length 135 [2022-07-21 04:54:56,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:54:56,425 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 662 transitions. [2022-07-21 04:54:56,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-21 04:54:56,425 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 662 transitions. [2022-07-21 04:54:56,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-21 04:54:56,427 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:54:56,427 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:54:56,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 04:54:56,428 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:54:56,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:54:56,428 INFO L85 PathProgramCache]: Analyzing trace with hash -846380484, now seen corresponding path program 2 times [2022-07-21 04:54:56,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:54:56,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984929379] [2022-07-21 04:54:56,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:54:56,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:54:56,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:56,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:54:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:56,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:54:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:56,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:54:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:56,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:54:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:56,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:54:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:56,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:54:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:56,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 04:54:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:56,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 04:54:56,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:56,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 04:54:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:56,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 04:54:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:56,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 04:54:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:56,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 04:54:56,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:56,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 04:54:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:56,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 04:54:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:56,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 04:54:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:56,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:54:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:56,612 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-21 04:54:56,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:54:56,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984929379] [2022-07-21 04:54:56,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984929379] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:54:56,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:54:56,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 04:54:56,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645278722] [2022-07-21 04:54:56,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:54:56,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 04:54:56,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:54:56,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 04:54:56,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:54:56,616 INFO L87 Difference]: Start difference. First operand 440 states and 662 transitions. Second operand has 12 states, 11 states have (on average 8.0) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-21 04:54:59,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:54:59,166 INFO L93 Difference]: Finished difference Result 1066 states and 1619 transitions. [2022-07-21 04:54:59,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 04:54:59,167 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.0) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 136 [2022-07-21 04:54:59,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:54:59,171 INFO L225 Difference]: With dead ends: 1066 [2022-07-21 04:54:59,171 INFO L226 Difference]: Without dead ends: 653 [2022-07-21 04:54:59,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-07-21 04:54:59,174 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 1685 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 4122 mSolverCounterSat, 668 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1685 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 4790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 668 IncrementalHoareTripleChecker+Valid, 4122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-21 04:54:59,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1685 Valid, 1801 Invalid, 4790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [668 Valid, 4122 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-21 04:54:59,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2022-07-21 04:54:59,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 442. [2022-07-21 04:54:59,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 340 states have (on average 1.5029411764705882) internal successors, (511), 347 states have internal predecessors, (511), 73 states have call successors, (73), 24 states have call predecessors, (73), 28 states have return successors, (84), 72 states have call predecessors, (84), 72 states have call successors, (84) [2022-07-21 04:54:59,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 668 transitions. [2022-07-21 04:54:59,204 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 668 transitions. Word has length 136 [2022-07-21 04:54:59,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:54:59,205 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 668 transitions. [2022-07-21 04:54:59,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.0) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-21 04:54:59,205 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 668 transitions. [2022-07-21 04:54:59,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-21 04:54:59,207 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:54:59,207 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:54:59,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 04:54:59,207 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:54:59,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:54:59,208 INFO L85 PathProgramCache]: Analyzing trace with hash 467957753, now seen corresponding path program 1 times [2022-07-21 04:54:59,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:54:59,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941159020] [2022-07-21 04:54:59,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:54:59,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:54:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:59,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:54:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:59,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:54:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:59,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:54:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:59,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:54:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:59,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:54:59,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:59,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:54:59,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:59,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 04:54:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:59,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 04:54:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:59,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:54:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:59,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 04:54:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:59,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 04:54:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:59,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 04:54:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:59,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 04:54:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:59,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 04:54:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:59,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 04:54:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:59,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:54:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:59,352 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-21 04:54:59,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:54:59,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941159020] [2022-07-21 04:54:59,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941159020] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:54:59,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593021634] [2022-07-21 04:54:59,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:54:59,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:54:59,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:54:59,356 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:54:59,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 04:54:59,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:54:59,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:54:59,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:54:59,628 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-21 04:54:59,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 04:54:59,710 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-21 04:54:59,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593021634] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 04:54:59,710 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 04:54:59,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2022-07-21 04:54:59,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658097645] [2022-07-21 04:54:59,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 04:54:59,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 04:54:59,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:54:59,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 04:54:59,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:54:59,712 INFO L87 Difference]: Start difference. First operand 442 states and 668 transitions. Second operand has 15 states, 14 states have (on average 10.428571428571429) internal successors, (146), 11 states have internal predecessors, (146), 4 states have call successors, (37), 6 states have call predecessors, (37), 3 states have return successors, (30), 3 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-21 04:55:02,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:55:02,889 INFO L93 Difference]: Finished difference Result 1795 states and 2927 transitions. [2022-07-21 04:55:02,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 04:55:02,890 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 10.428571428571429) internal successors, (146), 11 states have internal predecessors, (146), 4 states have call successors, (37), 6 states have call predecessors, (37), 3 states have return successors, (30), 3 states have call predecessors, (30), 4 states have call successors, (30) Word has length 137 [2022-07-21 04:55:02,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:55:02,898 INFO L225 Difference]: With dead ends: 1795 [2022-07-21 04:55:02,898 INFO L226 Difference]: Without dead ends: 1384 [2022-07-21 04:55:02,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2022-07-21 04:55:02,903 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 4235 mSDsluCounter, 2477 mSDsCounter, 0 mSdLazyCounter, 4757 mSolverCounterSat, 1571 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4237 SdHoareTripleChecker+Valid, 3206 SdHoareTripleChecker+Invalid, 6328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1571 IncrementalHoareTripleChecker+Valid, 4757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-21 04:55:02,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4237 Valid, 3206 Invalid, 6328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1571 Valid, 4757 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-21 04:55:02,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2022-07-21 04:55:02,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 795. [2022-07-21 04:55:02,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 629 states have (on average 1.56120826709062) internal successors, (982), 636 states have internal predecessors, (982), 137 states have call successors, (137), 24 states have call predecessors, (137), 28 states have return successors, (158), 136 states have call predecessors, (158), 136 states have call successors, (158) [2022-07-21 04:55:02,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1277 transitions. [2022-07-21 04:55:02,967 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1277 transitions. Word has length 137 [2022-07-21 04:55:02,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:55:02,967 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 1277 transitions. [2022-07-21 04:55:02,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 10.428571428571429) internal successors, (146), 11 states have internal predecessors, (146), 4 states have call successors, (37), 6 states have call predecessors, (37), 3 states have return successors, (30), 3 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-21 04:55:02,967 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1277 transitions. [2022-07-21 04:55:02,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-21 04:55:02,971 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:55:02,971 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:55:02,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 04:55:03,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:55:03,188 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:55:03,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:55:03,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1549137395, now seen corresponding path program 1 times [2022-07-21 04:55:03,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:55:03,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663412729] [2022-07-21 04:55:03,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:55:03,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:55:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:03,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:55:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:03,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:55:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:03,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:55:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:03,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:55:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:03,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:55:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:03,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:55:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:03,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 04:55:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:03,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:55:03,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:03,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 04:55:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:03,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 04:55:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:03,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 04:55:03,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:03,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 04:55:03,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:03,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-21 04:55:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:03,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-21 04:55:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:03,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 04:55:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:03,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:55:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:03,287 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-21 04:55:03,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:55:03,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663412729] [2022-07-21 04:55:03,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663412729] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:55:03,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:55:03,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:55:03,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455994143] [2022-07-21 04:55:03,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:55:03,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:55:03,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:55:03,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:55:03,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:55:03,289 INFO L87 Difference]: Start difference. First operand 795 states and 1277 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:55:04,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:55:04,800 INFO L93 Difference]: Finished difference Result 2056 states and 3370 transitions. [2022-07-21 04:55:04,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:55:04,801 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 140 [2022-07-21 04:55:04,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:55:04,809 INFO L225 Difference]: With dead ends: 2056 [2022-07-21 04:55:04,809 INFO L226 Difference]: Without dead ends: 1339 [2022-07-21 04:55:04,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:55:04,813 INFO L413 NwaCegarLoop]: 708 mSDtfsCounter, 1438 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1453 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 1926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:55:04,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1453 Valid, 1374 Invalid, 1926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [663 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 04:55:04,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2022-07-21 04:55:04,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1120. [2022-07-21 04:55:04,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 890 states have (on average 1.5808988764044944) internal successors, (1407), 897 states have internal predecessors, (1407), 201 states have call successors, (201), 24 states have call predecessors, (201), 28 states have return successors, (232), 200 states have call predecessors, (232), 200 states have call successors, (232) [2022-07-21 04:55:04,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 1840 transitions. [2022-07-21 04:55:04,901 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 1840 transitions. Word has length 140 [2022-07-21 04:55:04,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:55:04,901 INFO L495 AbstractCegarLoop]: Abstraction has 1120 states and 1840 transitions. [2022-07-21 04:55:04,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:55:04,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 1840 transitions. [2022-07-21 04:55:04,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-21 04:55:04,908 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:55:04,908 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:55:04,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 04:55:04,908 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:55:04,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:55:04,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1428026947, now seen corresponding path program 1 times [2022-07-21 04:55:04,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:55:04,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284215537] [2022-07-21 04:55:04,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:55:04,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:55:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:04,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:55:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:04,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:55:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:04,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:55:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:04,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:55:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:04,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:55:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:04,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:55:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:04,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 04:55:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:04,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:55:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:04,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 04:55:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:04,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 04:55:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:04,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 04:55:05,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:05,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 04:55:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:05,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 04:55:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:05,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 04:55:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:05,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-21 04:55:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:05,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:55:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:05,007 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-21 04:55:05,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:55:05,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284215537] [2022-07-21 04:55:05,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284215537] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:55:05,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:55:05,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:55:05,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881160222] [2022-07-21 04:55:05,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:55:05,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:55:05,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:55:05,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:55:05,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:55:05,009 INFO L87 Difference]: Start difference. First operand 1120 states and 1840 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:55:06,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:55:06,481 INFO L93 Difference]: Finished difference Result 2861 states and 4754 transitions. [2022-07-21 04:55:06,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:55:06,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 141 [2022-07-21 04:55:06,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:55:06,492 INFO L225 Difference]: With dead ends: 2861 [2022-07-21 04:55:06,492 INFO L226 Difference]: Without dead ends: 1872 [2022-07-21 04:55:06,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:55:06,496 INFO L413 NwaCegarLoop]: 648 mSDtfsCounter, 1521 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 683 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 1875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 683 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:55:06,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 1320 Invalid, 1875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [683 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 04:55:06,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2022-07-21 04:55:06,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1653. [2022-07-21 04:55:06,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1653 states, 1328 states have (on average 1.5911144578313252) internal successors, (2113), 1335 states have internal predecessors, (2113), 296 states have call successors, (296), 24 states have call predecessors, (296), 28 states have return successors, (327), 295 states have call predecessors, (327), 295 states have call successors, (327) [2022-07-21 04:55:06,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 2736 transitions. [2022-07-21 04:55:06,632 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 2736 transitions. Word has length 141 [2022-07-21 04:55:06,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:55:06,632 INFO L495 AbstractCegarLoop]: Abstraction has 1653 states and 2736 transitions. [2022-07-21 04:55:06,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:55:06,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 2736 transitions. [2022-07-21 04:55:06,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-21 04:55:06,641 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:55:06,641 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:55:06,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 04:55:06,642 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:55:06,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:55:06,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1628663039, now seen corresponding path program 1 times [2022-07-21 04:55:06,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:55:06,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328123398] [2022-07-21 04:55:06,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:55:06,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:55:06,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:06,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:55:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:06,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:55:06,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:06,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:55:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:06,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:55:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:06,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:55:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:06,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:55:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:06,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 04:55:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:06,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 04:55:06,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:06,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 04:55:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:06,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 04:55:06,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:06,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 04:55:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:06,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 04:55:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:06,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 04:55:06,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:06,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 04:55:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:06,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-21 04:55:06,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:06,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:55:06,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:06,739 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-21 04:55:06,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:55:06,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328123398] [2022-07-21 04:55:06,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328123398] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:55:06,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:55:06,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:55:06,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890305526] [2022-07-21 04:55:06,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:55:06,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:55:06,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:55:06,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:55:06,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:55:06,742 INFO L87 Difference]: Start difference. First operand 1653 states and 2736 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:55:08,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:55:08,162 INFO L93 Difference]: Finished difference Result 4068 states and 6840 transitions. [2022-07-21 04:55:08,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:55:08,162 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 142 [2022-07-21 04:55:08,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:55:08,175 INFO L225 Difference]: With dead ends: 4068 [2022-07-21 04:55:08,175 INFO L226 Difference]: Without dead ends: 2681 [2022-07-21 04:55:08,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:55:08,180 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 1463 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 646 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 1879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 646 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 04:55:08,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 1380 Invalid, 1879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [646 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 04:55:08,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2022-07-21 04:55:08,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2462. [2022-07-21 04:55:08,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2462 states, 2014 states have (on average 1.5988083416087389) internal successors, (3220), 2021 states have internal predecessors, (3220), 419 states have call successors, (419), 24 states have call predecessors, (419), 28 states have return successors, (466), 418 states have call predecessors, (466), 418 states have call successors, (466) [2022-07-21 04:55:08,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2462 states to 2462 states and 4105 transitions. [2022-07-21 04:55:08,354 INFO L78 Accepts]: Start accepts. Automaton has 2462 states and 4105 transitions. Word has length 142 [2022-07-21 04:55:08,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:55:08,355 INFO L495 AbstractCegarLoop]: Abstraction has 2462 states and 4105 transitions. [2022-07-21 04:55:08,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:55:08,355 INFO L276 IsEmpty]: Start isEmpty. Operand 2462 states and 4105 transitions. [2022-07-21 04:55:08,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-21 04:55:08,367 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:55:08,367 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:55:08,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 04:55:08,367 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:55:08,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:55:08,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1636486596, now seen corresponding path program 1 times [2022-07-21 04:55:08,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:55:08,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882133917] [2022-07-21 04:55:08,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:55:08,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:55:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:08,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:55:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:08,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:55:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:08,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:55:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:08,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:55:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:08,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:55:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:08,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:55:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:08,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 04:55:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:08,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 04:55:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:08,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 04:55:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:08,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 04:55:08,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:08,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 04:55:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:08,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 04:55:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:08,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 04:55:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:08,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 04:55:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:08,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-21 04:55:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:08,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:55:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:08,467 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-21 04:55:08,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:55:08,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882133917] [2022-07-21 04:55:08,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882133917] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:55:08,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:55:08,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:55:08,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428965074] [2022-07-21 04:55:08,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:55:08,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:55:08,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:55:08,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:55:08,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:55:08,471 INFO L87 Difference]: Start difference. First operand 2462 states and 4105 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:55:09,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:55:09,961 INFO L93 Difference]: Finished difference Result 5952 states and 10100 transitions. [2022-07-21 04:55:09,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:55:09,962 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 143 [2022-07-21 04:55:09,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:55:09,984 INFO L225 Difference]: With dead ends: 5952 [2022-07-21 04:55:09,984 INFO L226 Difference]: Without dead ends: 3975 [2022-07-21 04:55:09,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:55:09,993 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 1498 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 650 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 1884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 650 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 04:55:09,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 1336 Invalid, 1884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [650 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 04:55:09,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3975 states. [2022-07-21 04:55:10,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3975 to 3756. [2022-07-21 04:55:10,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3756 states, 3129 states have (on average 1.6037072547139661) internal successors, (5018), 3136 states have internal predecessors, (5018), 598 states have call successors, (598), 24 states have call predecessors, (598), 28 states have return successors, (671), 597 states have call predecessors, (671), 597 states have call successors, (671) [2022-07-21 04:55:10,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3756 states to 3756 states and 6287 transitions. [2022-07-21 04:55:10,291 INFO L78 Accepts]: Start accepts. Automaton has 3756 states and 6287 transitions. Word has length 143 [2022-07-21 04:55:10,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:55:10,291 INFO L495 AbstractCegarLoop]: Abstraction has 3756 states and 6287 transitions. [2022-07-21 04:55:10,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:55:10,292 INFO L276 IsEmpty]: Start isEmpty. Operand 3756 states and 6287 transitions. [2022-07-21 04:55:10,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-21 04:55:10,309 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:55:10,310 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:55:10,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 04:55:10,310 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:55:10,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:55:10,311 INFO L85 PathProgramCache]: Analyzing trace with hash 499259651, now seen corresponding path program 1 times [2022-07-21 04:55:10,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:55:10,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2887] [2022-07-21 04:55:10,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:55:10,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:55:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:10,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:55:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:10,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:55:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:10,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:55:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:10,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:55:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:10,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:55:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:10,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:55:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:10,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 04:55:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:10,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 04:55:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:10,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 04:55:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:10,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 04:55:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:10,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 04:55:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:10,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 04:55:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:10,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-21 04:55:10,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:10,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 04:55:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:10,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-21 04:55:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:10,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:55:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:10,418 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-21 04:55:10,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:55:10,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2887] [2022-07-21 04:55:10,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2887] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:55:10,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:55:10,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:55:10,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171379981] [2022-07-21 04:55:10,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:55:10,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:55:10,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:55:10,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:55:10,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:55:10,421 INFO L87 Difference]: Start difference. First operand 3756 states and 6287 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:55:12,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:55:12,028 INFO L93 Difference]: Finished difference Result 9055 states and 15464 transitions. [2022-07-21 04:55:12,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:55:12,031 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 144 [2022-07-21 04:55:12,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:55:12,063 INFO L225 Difference]: With dead ends: 9055 [2022-07-21 04:55:12,064 INFO L226 Difference]: Without dead ends: 6116 [2022-07-21 04:55:12,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:55:12,075 INFO L413 NwaCegarLoop]: 671 mSDtfsCounter, 1532 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 1901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 677 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 04:55:12,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1547 Valid, 1352 Invalid, 1901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [677 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 04:55:12,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6116 states. [2022-07-21 04:55:12,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6116 to 5897. [2022-07-21 04:55:12,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5897 states, 4894 states have (on average 1.5986922762566407) internal successors, (7824), 4901 states have internal predecessors, (7824), 974 states have call successors, (974), 24 states have call predecessors, (974), 28 states have return successors, (1091), 973 states have call predecessors, (1091), 973 states have call successors, (1091) [2022-07-21 04:55:12,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5897 states to 5897 states and 9889 transitions. [2022-07-21 04:55:12,532 INFO L78 Accepts]: Start accepts. Automaton has 5897 states and 9889 transitions. Word has length 144 [2022-07-21 04:55:12,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:55:12,532 INFO L495 AbstractCegarLoop]: Abstraction has 5897 states and 9889 transitions. [2022-07-21 04:55:12,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:55:12,545 INFO L276 IsEmpty]: Start isEmpty. Operand 5897 states and 9889 transitions. [2022-07-21 04:55:12,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 04:55:12,569 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:55:12,569 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:55:12,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 04:55:12,569 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:55:12,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:55:12,570 INFO L85 PathProgramCache]: Analyzing trace with hash -2141722056, now seen corresponding path program 1 times [2022-07-21 04:55:12,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:55:12,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880015708] [2022-07-21 04:55:12,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:55:12,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:55:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:12,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:55:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:12,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:55:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:12,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:55:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:12,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:55:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:12,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:55:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:12,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:55:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:12,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:55:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:12,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 04:55:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:12,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 04:55:12,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:12,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 04:55:12,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:12,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 04:55:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:12,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 04:55:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:12,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 04:55:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:12,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 04:55:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:12,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 04:55:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:12,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:55:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:12,669 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-21 04:55:12,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:55:12,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880015708] [2022-07-21 04:55:12,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880015708] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:55:12,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:55:12,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:55:12,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227998401] [2022-07-21 04:55:12,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:55:12,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:55:12,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:55:12,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:55:12,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:55:12,672 INFO L87 Difference]: Start difference. First operand 5897 states and 9889 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:55:14,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:55:14,522 INFO L93 Difference]: Finished difference Result 14672 states and 25077 transitions. [2022-07-21 04:55:14,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:55:14,523 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2022-07-21 04:55:14,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:55:14,564 INFO L225 Difference]: With dead ends: 14672 [2022-07-21 04:55:14,564 INFO L226 Difference]: Without dead ends: 9994 [2022-07-21 04:55:14,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:55:14,581 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 1601 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 686 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1616 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 1845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 686 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:55:14,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1616 Valid, 1298 Invalid, 1845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [686 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 04:55:14,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9994 states. [2022-07-21 04:55:15,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9994 to 9775. [2022-07-21 04:55:15,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9775 states, 8166 states have (on average 1.5972324271369092) internal successors, (13043), 8173 states have internal predecessors, (13043), 1580 states have call successors, (1580), 24 states have call predecessors, (1580), 28 states have return successors, (1775), 1579 states have call predecessors, (1775), 1579 states have call successors, (1775) [2022-07-21 04:55:15,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9775 states to 9775 states and 16398 transitions. [2022-07-21 04:55:15,230 INFO L78 Accepts]: Start accepts. Automaton has 9775 states and 16398 transitions. Word has length 145 [2022-07-21 04:55:15,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:55:15,230 INFO L495 AbstractCegarLoop]: Abstraction has 9775 states and 16398 transitions. [2022-07-21 04:55:15,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:55:15,230 INFO L276 IsEmpty]: Start isEmpty. Operand 9775 states and 16398 transitions. [2022-07-21 04:55:15,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-21 04:55:15,265 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:55:15,265 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:55:15,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 04:55:15,265 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:55:15,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:55:15,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1735783829, now seen corresponding path program 1 times [2022-07-21 04:55:15,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:55:15,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419566048] [2022-07-21 04:55:15,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:55:15,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:55:15,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:15,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:55:15,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:15,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:55:15,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:15,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:55:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:15,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:55:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:15,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:55:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:15,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:55:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:15,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:55:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:15,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:55:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:15,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 04:55:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:15,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 04:55:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:15,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 04:55:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:15,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-21 04:55:15,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:15,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-21 04:55:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:15,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-21 04:55:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:15,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 04:55:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:15,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:55:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:15,365 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-21 04:55:15,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:55:15,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419566048] [2022-07-21 04:55:15,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419566048] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:55:15,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:55:15,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:55:15,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223460675] [2022-07-21 04:55:15,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:55:15,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:55:15,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:55:15,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:55:15,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:55:15,368 INFO L87 Difference]: Start difference. First operand 9775 states and 16398 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:55:17,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:55:17,288 INFO L93 Difference]: Finished difference Result 25381 states and 43358 transitions. [2022-07-21 04:55:17,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:55:17,289 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 146 [2022-07-21 04:55:17,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:55:17,352 INFO L225 Difference]: With dead ends: 25381 [2022-07-21 04:55:17,353 INFO L226 Difference]: Without dead ends: 17307 [2022-07-21 04:55:17,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:55:17,383 INFO L413 NwaCegarLoop]: 660 mSDtfsCounter, 1540 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 667 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 1359 SdHoareTripleChecker+Invalid, 1892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 667 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 04:55:17,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1555 Valid, 1359 Invalid, 1892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [667 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 04:55:17,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17307 states. [2022-07-21 04:55:18,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17307 to 17088. [2022-07-21 04:55:18,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17088 states, 14276 states have (on average 1.589310731297282) internal successors, (22689), 14283 states have internal predecessors, (22689), 2783 states have call successors, (2783), 24 states have call predecessors, (2783), 28 states have return successors, (3122), 2782 states have call predecessors, (3122), 2782 states have call successors, (3122) [2022-07-21 04:55:18,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17088 states to 17088 states and 28594 transitions. [2022-07-21 04:55:18,456 INFO L78 Accepts]: Start accepts. Automaton has 17088 states and 28594 transitions. Word has length 146 [2022-07-21 04:55:18,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:55:18,456 INFO L495 AbstractCegarLoop]: Abstraction has 17088 states and 28594 transitions. [2022-07-21 04:55:18,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:55:18,457 INFO L276 IsEmpty]: Start isEmpty. Operand 17088 states and 28594 transitions. [2022-07-21 04:55:18,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-21 04:55:18,494 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:55:18,494 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:55:18,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 04:55:18,495 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:55:18,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:55:18,495 INFO L85 PathProgramCache]: Analyzing trace with hash -282063465, now seen corresponding path program 1 times [2022-07-21 04:55:18,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:55:18,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236025770] [2022-07-21 04:55:18,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:55:18,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:55:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:18,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:55:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:18,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:55:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:18,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:55:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:18,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:55:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:18,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:55:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:18,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:55:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:18,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 04:55:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:18,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 04:55:18,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:18,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 04:55:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:18,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 04:55:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:18,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 04:55:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:18,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 04:55:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:18,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 04:55:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:18,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 04:55:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:18,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-21 04:55:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:18,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:55:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:18,574 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-21 04:55:18,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:55:18,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236025770] [2022-07-21 04:55:18,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236025770] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:55:18,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:55:18,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:55:18,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891965749] [2022-07-21 04:55:18,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:55:18,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:55:18,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:55:18,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:55:18,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:55:18,578 INFO L87 Difference]: Start difference. First operand 17088 states and 28594 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:55:21,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:55:21,306 INFO L93 Difference]: Finished difference Result 45357 states and 77371 transitions. [2022-07-21 04:55:21,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:55:21,306 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 147 [2022-07-21 04:55:21,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:55:21,457 INFO L225 Difference]: With dead ends: 45357 [2022-07-21 04:55:21,458 INFO L226 Difference]: Without dead ends: 30647 [2022-07-21 04:55:21,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:55:21,512 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 1384 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 645 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1399 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 1918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 04:55:21,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1399 Valid, 1395 Invalid, 1918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [645 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 04:55:21,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30647 states. [2022-07-21 04:55:23,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30647 to 30428. [2022-07-21 04:55:23,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30428 states, 25577 states have (on average 1.5854869609414708) internal successors, (40552), 25584 states have internal predecessors, (40552), 4822 states have call successors, (4822), 24 states have call predecessors, (4822), 28 states have return successors, (5435), 4821 states have call predecessors, (5435), 4821 states have call successors, (5435) [2022-07-21 04:55:23,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30428 states to 30428 states and 50809 transitions. [2022-07-21 04:55:23,622 INFO L78 Accepts]: Start accepts. Automaton has 30428 states and 50809 transitions. Word has length 147 [2022-07-21 04:55:23,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:55:23,622 INFO L495 AbstractCegarLoop]: Abstraction has 30428 states and 50809 transitions. [2022-07-21 04:55:23,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:55:23,623 INFO L276 IsEmpty]: Start isEmpty. Operand 30428 states and 50809 transitions. [2022-07-21 04:55:23,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-21 04:55:23,679 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:55:23,679 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:55:23,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 04:55:23,680 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:55:23,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:55:23,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1588643891, now seen corresponding path program 1 times [2022-07-21 04:55:23,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:55:23,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251988853] [2022-07-21 04:55:23,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:55:23,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:55:23,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:23,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:55:23,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:23,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:55:23,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:23,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:55:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:23,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:55:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:23,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:55:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:23,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:55:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:23,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 04:55:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:23,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 04:55:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:23,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 04:55:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:23,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 04:55:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:23,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 04:55:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:23,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 04:55:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:23,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 04:55:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:23,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 04:55:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:23,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-21 04:55:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:23,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:55:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:23,802 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-21 04:55:23,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:55:23,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251988853] [2022-07-21 04:55:23,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251988853] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:55:23,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:55:23,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:55:23,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957641114] [2022-07-21 04:55:23,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:55:23,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:55:23,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:55:23,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:55:23,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:55:23,805 INFO L87 Difference]: Start difference. First operand 30428 states and 50809 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:55:27,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:55:27,631 INFO L93 Difference]: Finished difference Result 83094 states and 140895 transitions. [2022-07-21 04:55:27,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:55:27,631 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 148 [2022-07-21 04:55:27,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:55:27,842 INFO L225 Difference]: With dead ends: 83094 [2022-07-21 04:55:27,843 INFO L226 Difference]: Without dead ends: 55856 [2022-07-21 04:55:27,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:55:27,922 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 1410 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 644 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1425 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 1887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 04:55:27,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1425 Valid, 1389 Invalid, 1887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 04:55:27,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55856 states. [2022-07-21 04:55:30,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55856 to 55637. [2022-07-21 04:55:30,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55637 states, 47071 states have (on average 1.5802298655222962) internal successors, (74383), 47078 states have internal predecessors, (74383), 8537 states have call successors, (8537), 24 states have call predecessors, (8537), 28 states have return successors, (9682), 8536 states have call predecessors, (9682), 8536 states have call successors, (9682) [2022-07-21 04:55:31,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55637 states to 55637 states and 92602 transitions. [2022-07-21 04:55:31,102 INFO L78 Accepts]: Start accepts. Automaton has 55637 states and 92602 transitions. Word has length 148 [2022-07-21 04:55:31,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:55:31,103 INFO L495 AbstractCegarLoop]: Abstraction has 55637 states and 92602 transitions. [2022-07-21 04:55:31,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:55:31,103 INFO L276 IsEmpty]: Start isEmpty. Operand 55637 states and 92602 transitions. [2022-07-21 04:55:31,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-21 04:55:31,168 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:55:31,169 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:55:31,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 04:55:31,169 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:55:31,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:55:31,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1910740663, now seen corresponding path program 1 times [2022-07-21 04:55:31,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:55:31,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649071862] [2022-07-21 04:55:31,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:55:31,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:55:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:31,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:55:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:31,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:55:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:31,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:55:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:31,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:55:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:31,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:55:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:31,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:55:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:31,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 04:55:31,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:31,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 04:55:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:31,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 04:55:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:31,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 04:55:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:31,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 04:55:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:31,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 04:55:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:31,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 04:55:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:31,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-21 04:55:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:31,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-21 04:55:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:31,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:55:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:31,257 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-21 04:55:31,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:55:31,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649071862] [2022-07-21 04:55:31,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649071862] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:55:31,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:55:31,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:55:31,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210481501] [2022-07-21 04:55:31,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:55:31,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:55:31,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:55:31,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:55:31,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:55:31,260 INFO L87 Difference]: Start difference. First operand 55637 states and 92602 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:55:36,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:55:36,617 INFO L93 Difference]: Finished difference Result 104150 states and 176881 transitions. [2022-07-21 04:55:36,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:55:36,618 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 149 [2022-07-21 04:55:36,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:55:37,183 INFO L225 Difference]: With dead ends: 104150 [2022-07-21 04:55:37,184 INFO L226 Difference]: Without dead ends: 103930 [2022-07-21 04:55:37,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:55:37,223 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 1525 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 674 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 1351 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 674 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:55:37,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1540 Valid, 1351 Invalid, 1869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [674 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 04:55:37,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103930 states. [2022-07-21 04:55:42,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103930 to 103711. [2022-07-21 04:55:42,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103711 states, 88346 states have (on average 1.5735177597174745) internal successors, (139014), 88353 states have internal predecessors, (139014), 15336 states have call successors, (15336), 24 states have call predecessors, (15336), 28 states have return successors, (17527), 15335 states have call predecessors, (17527), 15335 states have call successors, (17527) [2022-07-21 04:55:42,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103711 states to 103711 states and 171877 transitions. [2022-07-21 04:55:42,823 INFO L78 Accepts]: Start accepts. Automaton has 103711 states and 171877 transitions. Word has length 149 [2022-07-21 04:55:42,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:55:42,823 INFO L495 AbstractCegarLoop]: Abstraction has 103711 states and 171877 transitions. [2022-07-21 04:55:42,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:55:42,823 INFO L276 IsEmpty]: Start isEmpty. Operand 103711 states and 171877 transitions. [2022-07-21 04:55:42,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-21 04:55:42,883 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:55:42,883 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:55:42,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 04:55:42,883 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:55:42,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:55:42,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1066790572, now seen corresponding path program 1 times [2022-07-21 04:55:42,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:55:42,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771427710] [2022-07-21 04:55:42,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:55:42,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:55:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:42,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:55:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:43,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:55:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:43,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:55:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:43,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:55:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:43,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:55:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:43,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:55:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:43,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 04:55:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:43,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 04:55:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:43,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 04:55:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:43,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 04:55:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:43,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 04:55:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:43,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-21 04:55:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:43,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 04:55:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:43,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-21 04:55:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:43,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-21 04:55:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:43,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:55:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:43,130 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-21 04:55:43,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:55:43,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771427710] [2022-07-21 04:55:43,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771427710] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:55:43,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771705927] [2022-07-21 04:55:43,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:55:43,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:55:43,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:55:43,133 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:55:43,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 04:55:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:43,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-21 04:55:43,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:55:43,583 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-21 04:55:43,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 04:55:44,230 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 04:55:44,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771705927] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 04:55:44,231 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 04:55:44,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 9] total 32 [2022-07-21 04:55:44,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098711068] [2022-07-21 04:55:44,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 04:55:44,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-21 04:55:44,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:55:44,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-21 04:55:44,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=914, Unknown=0, NotChecked=0, Total=992 [2022-07-21 04:55:44,233 INFO L87 Difference]: Start difference. First operand 103711 states and 171877 transitions. Second operand has 32 states, 30 states have (on average 8.266666666666667) internal successors, (248), 24 states have internal predecessors, (248), 9 states have call successors, (48), 12 states have call predecessors, (48), 12 states have return successors, (42), 11 states have call predecessors, (42), 9 states have call successors, (42)