./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec27_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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_spec27_product28.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 4fb12138b73b283c9fdc444b2c9ebb4aa3340005d69e98d463fd0b0beb9c1e74 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 14:35:16,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 14:35:16,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 14:35:16,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 14:35:16,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 14:35:16,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 14:35:16,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 14:35:16,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 14:35:16,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 14:35:16,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 14:35:16,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 14:35:16,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 14:35:16,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 14:35:16,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 14:35:16,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 14:35:16,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 14:35:16,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 14:35:16,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 14:35:16,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 14:35:16,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 14:35:16,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 14:35:16,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 14:35:16,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 14:35:16,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 14:35:16,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 14:35:16,715 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 14:35:16,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 14:35:16,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 14:35:16,716 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 14:35:16,717 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 14:35:16,717 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 14:35:16,718 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 14:35:16,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 14:35:16,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 14:35:16,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 14:35:16,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 14:35:16,720 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 14:35:16,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 14:35:16,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 14:35:16,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 14:35:16,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 14:35:16,722 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 14:35:16,735 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 14:35:16,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 14:35:16,739 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 14:35:16,739 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 14:35:16,740 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 14:35:16,740 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 14:35:16,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 14:35:16,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 14:35:16,741 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 14:35:16,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 14:35:16,742 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 14:35:16,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 14:35:16,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 14:35:16,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 14:35:16,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 14:35:16,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 14:35:16,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 14:35:16,743 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 14:35:16,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 14:35:16,743 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 14:35:16,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 14:35:16,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 14:35:16,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 14:35:16,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 14:35:16,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 14:35:16,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 14:35:16,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 14:35:16,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 14:35:16,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 14:35:16,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 14:35:16,745 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 14:35:16,745 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 14:35:16,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 14:35:16,745 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 14:35:16,745 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fb12138b73b283c9fdc444b2c9ebb4aa3340005d69e98d463fd0b0beb9c1e74 [2021-12-14 14:35:16,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 14:35:16,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 14:35:16,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 14:35:16,936 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 14:35:16,936 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 14:35:16,937 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec27_product28.cil.c [2021-12-14 14:35:16,984 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebd77fa48/171aa95c7e644ebd9bdb3473debf41e3/FLAGe153230f0 [2021-12-14 14:35:17,455 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 14:35:17,456 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec27_product28.cil.c [2021-12-14 14:35:17,488 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebd77fa48/171aa95c7e644ebd9bdb3473debf41e3/FLAGe153230f0 [2021-12-14 14:35:17,775 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebd77fa48/171aa95c7e644ebd9bdb3473debf41e3 [2021-12-14 14:35:17,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 14:35:17,778 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 14:35:17,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 14:35:17,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 14:35:17,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 14:35:17,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:35:17" (1/1) ... [2021-12-14 14:35:17,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12fa4d59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:35:17, skipping insertion in model container [2021-12-14 14:35:17,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:35:17" (1/1) ... [2021-12-14 14:35:17,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 14:35:17,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 14:35:18,189 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_spec27_product28.cil.c[32786,32799] [2021-12-14 14:35:18,250 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 14:35:18,271 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 14:35:18,361 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_spec27_product28.cil.c[32786,32799] [2021-12-14 14:35:18,383 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 14:35:18,417 INFO L208 MainTranslator]: Completed translation [2021-12-14 14:35:18,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:35:18 WrapperNode [2021-12-14 14:35:18,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 14:35:18,418 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 14:35:18,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 14:35:18,418 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 14:35:18,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:35:18" (1/1) ... [2021-12-14 14:35:18,454 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:35:18" (1/1) ... [2021-12-14 14:35:18,510 INFO L137 Inliner]: procedures = 128, calls = 209, calls flagged for inlining = 54, calls inlined = 45, statements flattened = 861 [2021-12-14 14:35:18,510 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 14:35:18,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 14:35:18,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 14:35:18,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 14:35:18,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:35:18" (1/1) ... [2021-12-14 14:35:18,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:35:18" (1/1) ... [2021-12-14 14:35:18,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:35:18" (1/1) ... [2021-12-14 14:35:18,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:35:18" (1/1) ... [2021-12-14 14:35:18,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:35:18" (1/1) ... [2021-12-14 14:35:18,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:35:18" (1/1) ... [2021-12-14 14:35:18,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:35:18" (1/1) ... [2021-12-14 14:35:18,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 14:35:18,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 14:35:18,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 14:35:18,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 14:35:18,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:35:18" (1/1) ... [2021-12-14 14:35:18,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 14:35:18,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:35:18,640 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) [2021-12-14 14:35:18,642 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 [2021-12-14 14:35:18,671 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-12-14 14:35:18,671 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-12-14 14:35:18,671 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-14 14:35:18,671 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-14 14:35:18,671 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-14 14:35:18,671 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-14 14:35:18,672 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-14 14:35:18,672 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-14 14:35:18,672 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-14 14:35:18,672 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-14 14:35:18,672 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-14 14:35:18,672 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-14 14:35:18,672 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-14 14:35:18,672 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-14 14:35:18,673 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-14 14:35:18,673 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-14 14:35:18,673 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-14 14:35:18,673 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-14 14:35:18,673 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-14 14:35:18,673 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-14 14:35:18,673 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-14 14:35:18,673 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-14 14:35:18,674 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-14 14:35:18,674 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-14 14:35:18,674 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-14 14:35:18,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 14:35:18,674 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-14 14:35:18,674 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-14 14:35:18,674 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-12-14 14:35:18,675 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-12-14 14:35:18,675 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-14 14:35:18,675 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-14 14:35:18,675 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-14 14:35:18,675 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-14 14:35:18,675 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-14 14:35:18,675 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-14 14:35:18,675 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2021-12-14 14:35:18,676 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2021-12-14 14:35:18,676 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-14 14:35:18,676 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-14 14:35:18,676 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-14 14:35:18,676 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-14 14:35:18,676 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-14 14:35:18,676 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-14 14:35:18,676 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-14 14:35:18,677 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-14 14:35:18,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 14:35:18,677 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-14 14:35:18,677 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-14 14:35:18,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 14:35:18,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 14:35:18,881 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 14:35:18,882 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 14:35:19,311 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 14:35:19,322 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 14:35:19,322 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 14:35:19,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:35:19 BoogieIcfgContainer [2021-12-14 14:35:19,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 14:35:19,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 14:35:19,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 14:35:19,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 14:35:19,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:35:17" (1/3) ... [2021-12-14 14:35:19,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1799a9a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:35:19, skipping insertion in model container [2021-12-14 14:35:19,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:35:18" (2/3) ... [2021-12-14 14:35:19,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1799a9a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:35:19, skipping insertion in model container [2021-12-14 14:35:19,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:35:19" (3/3) ... [2021-12-14 14:35:19,332 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product28.cil.c [2021-12-14 14:35:19,336 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 14:35:19,336 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 14:35:19,378 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 14:35:19,384 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 14:35:19,384 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 14:35:19,412 INFO L276 IsEmpty]: Start isEmpty. Operand has 334 states, 258 states have (on average 1.5193798449612403) internal successors, (392), 262 states have internal predecessors, (392), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-12-14 14:35:19,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-14 14:35:19,427 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:35:19,428 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:35:19,428 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:35:19,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:35:19,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1749849167, now seen corresponding path program 1 times [2021-12-14 14:35:19,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:35:19,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612417073] [2021-12-14 14:35:19,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:35:19,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:35:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:19,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:35:19,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:19,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:35:19,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:19,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:35:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:19,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 14:35:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:19,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 14:35:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:19,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 14:35:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:19,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 14:35:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:19,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-14 14:35:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:19,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 14:35:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:19,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 14:35:19,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:19,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 14:35:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:19,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 14:35:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:19,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 14:35:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:19,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-14 14:35:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:19,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 14:35:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:19,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-14 14:35:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:19,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 14:35:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:19,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 14:35:19,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:19,882 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-14 14:35:19,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:35:19,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612417073] [2021-12-14 14:35:19,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612417073] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:35:19,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048145411] [2021-12-14 14:35:19,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:35:19,884 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:35:19,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:35:19,891 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) [2021-12-14 14:35:19,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 14:35:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:20,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 1166 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-14 14:35:20,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:35:20,391 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-14 14:35:20,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:35:20,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048145411] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:35:20,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:35:20,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2021-12-14 14:35:20,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138199725] [2021-12-14 14:35:20,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:35:20,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 14:35:20,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:35:20,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 14:35:20,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 14:35:20,430 INFO L87 Difference]: Start difference. First operand has 334 states, 258 states have (on average 1.5193798449612403) internal successors, (392), 262 states have internal predecessors, (392), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Second operand has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 14:35:20,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:35:20,468 INFO L93 Difference]: Finished difference Result 519 states and 750 transitions. [2021-12-14 14:35:20,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 14:35:20,470 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 139 [2021-12-14 14:35:20,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:35:20,479 INFO L225 Difference]: With dead ends: 519 [2021-12-14 14:35:20,480 INFO L226 Difference]: Without dead ends: 327 [2021-12-14 14:35:20,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 14:35:20,486 INFO L933 BasicCegarLoop]: 490 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, 490 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 [2021-12-14 14:35:20,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:35:20,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-12-14 14:35:20,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2021-12-14 14:35:20,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 252 states have (on average 1.5119047619047619) internal successors, (381), 255 states have internal predecessors, (381), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-12-14 14:35:20,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 482 transitions. [2021-12-14 14:35:20,576 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 482 transitions. Word has length 139 [2021-12-14 14:35:20,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:35:20,581 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 482 transitions. [2021-12-14 14:35:20,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 14:35:20,582 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 482 transitions. [2021-12-14 14:35:20,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-14 14:35:20,596 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:35:20,596 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:35:20,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-14 14:35:20,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-14 14:35:20,815 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:35:20,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:35:20,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1360645034, now seen corresponding path program 1 times [2021-12-14 14:35:20,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:35:20,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054090467] [2021-12-14 14:35:20,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:35:20,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:35:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:20,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:35:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:20,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:35:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:20,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:35:20,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:20,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 14:35:20,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:20,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 14:35:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:20,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 14:35:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:20,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 14:35:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:20,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-14 14:35:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:20,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 14:35:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:20,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 14:35:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:20,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 14:35:20,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:20,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-14 14:35:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:20,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 14:35:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:20,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-14 14:35:20,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:20,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 14:35:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:20,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-14 14:35:20,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:20,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-14 14:35:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:20,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 14:35:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:20,993 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-14 14:35:20,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:35:20,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054090467] [2021-12-14 14:35:20,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054090467] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:35:20,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813932240] [2021-12-14 14:35:20,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:35:20,994 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:35:20,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:35:21,011 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) [2021-12-14 14:35:21,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 14:35:21,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:21,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 1167 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 14:35:21,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:35:21,448 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-14 14:35:21,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:35:21,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813932240] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:35:21,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:35:21,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-14 14:35:21,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940438333] [2021-12-14 14:35:21,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:35:21,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 14:35:21,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:35:21,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 14:35:21,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 14:35:21,453 INFO L87 Difference]: Start difference. First operand 327 states and 482 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 14:35:21,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:35:21,486 INFO L93 Difference]: Finished difference Result 509 states and 731 transitions. [2021-12-14 14:35:21,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 14:35:21,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 140 [2021-12-14 14:35:21,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:35:21,503 INFO L225 Difference]: With dead ends: 509 [2021-12-14 14:35:21,503 INFO L226 Difference]: Without dead ends: 330 [2021-12-14 14:35:21,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 14:35:21,509 INFO L933 BasicCegarLoop]: 480 mSDtfsCounter, 1 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 958 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 [2021-12-14 14:35:21,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 958 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:35:21,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-12-14 14:35:21,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 329. [2021-12-14 14:35:21,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 254 states have (on average 1.5078740157480315) internal successors, (383), 257 states have internal predecessors, (383), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-12-14 14:35:21,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 484 transitions. [2021-12-14 14:35:21,553 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 484 transitions. Word has length 140 [2021-12-14 14:35:21,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:35:21,559 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 484 transitions. [2021-12-14 14:35:21,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 14:35:21,560 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 484 transitions. [2021-12-14 14:35:21,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 14:35:21,563 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:35:21,563 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:35:21,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 14:35:21,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-14 14:35:21,788 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:35:21,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:35:21,789 INFO L85 PathProgramCache]: Analyzing trace with hash 440032415, now seen corresponding path program 1 times [2021-12-14 14:35:21,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:35:21,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611634907] [2021-12-14 14:35:21,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:35:21,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:35:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:21,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:35:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:21,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:35:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:21,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:35:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:21,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 14:35:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:21,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 14:35:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:21,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 14:35:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:21,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 14:35:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:21,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 14:35:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:21,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 14:35:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:21,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-14 14:35:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:21,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-14 14:35:21,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:21,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 14:35:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:21,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 14:35:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:21,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 14:35:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:21,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 14:35:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:21,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 14:35:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:21,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 14:35:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:21,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-14 14:35:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:21,953 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-14 14:35:21,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:35:21,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611634907] [2021-12-14 14:35:21,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611634907] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:35:21,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010376316] [2021-12-14 14:35:21,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:35:21,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:35:21,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:35:21,955 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) [2021-12-14 14:35:21,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 14:35:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:22,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 1181 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 14:35:22,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:35:22,348 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-14 14:35:22,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:35:22,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010376316] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:35:22,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:35:22,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-14 14:35:22,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056220566] [2021-12-14 14:35:22,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:35:22,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 14:35:22,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:35:22,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 14:35:22,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 14:35:22,351 INFO L87 Difference]: Start difference. First operand 329 states and 484 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 14:35:22,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:35:22,388 INFO L93 Difference]: Finished difference Result 683 states and 1019 transitions. [2021-12-14 14:35:22,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 14:35:22,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 146 [2021-12-14 14:35:22,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:35:22,391 INFO L225 Difference]: With dead ends: 683 [2021-12-14 14:35:22,391 INFO L226 Difference]: Without dead ends: 381 [2021-12-14 14:35:22,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 14:35:22,393 INFO L933 BasicCegarLoop]: 499 mSDtfsCounter, 99 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 934 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 [2021-12-14 14:35:22,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 934 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:35:22,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-12-14 14:35:22,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 373. [2021-12-14 14:35:22,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 287 states have (on average 1.5226480836236933) internal successors, (437), 290 states have internal predecessors, (437), 62 states have call successors, (62), 23 states have call predecessors, (62), 23 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2021-12-14 14:35:22,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 560 transitions. [2021-12-14 14:35:22,413 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 560 transitions. Word has length 146 [2021-12-14 14:35:22,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:35:22,413 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 560 transitions. [2021-12-14 14:35:22,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 14:35:22,413 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 560 transitions. [2021-12-14 14:35:22,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-14 14:35:22,415 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:35:22,416 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:35:22,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-14 14:35:22,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:35:22,634 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:35:22,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:35:22,634 INFO L85 PathProgramCache]: Analyzing trace with hash -782479930, now seen corresponding path program 1 times [2021-12-14 14:35:22,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:35:22,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474517088] [2021-12-14 14:35:22,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:35:22,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:35:22,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:22,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:35:22,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:22,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:35:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:22,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:35:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:22,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 14:35:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:22,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 14:35:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:22,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 14:35:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:22,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-14 14:35:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:22,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 14:35:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:22,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 14:35:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:22,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-14 14:35:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:22,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-14 14:35:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:22,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 14:35:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:22,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-14 14:35:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:22,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 14:35:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:22,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 14:35:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:22,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-14 14:35:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:22,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 14:35:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:22,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-14 14:35:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:22,732 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-14 14:35:22,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:35:22,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474517088] [2021-12-14 14:35:22,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474517088] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:35:22,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079445297] [2021-12-14 14:35:22,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:35:22,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:35:22,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:35:22,748 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) [2021-12-14 14:35:22,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 14:35:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:22,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 1188 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 14:35:22,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:35:23,173 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-14 14:35:23,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:35:23,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079445297] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:35:23,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:35:23,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2021-12-14 14:35:23,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476190459] [2021-12-14 14:35:23,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:35:23,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 14:35:23,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:35:23,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 14:35:23,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-14 14:35:23,176 INFO L87 Difference]: Start difference. First operand 373 states and 560 transitions. Second operand has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-14 14:35:23,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:35:23,215 INFO L93 Difference]: Finished difference Result 737 states and 1110 transitions. [2021-12-14 14:35:23,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 14:35:23,216 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 147 [2021-12-14 14:35:23,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:35:23,218 INFO L225 Difference]: With dead ends: 737 [2021-12-14 14:35:23,218 INFO L226 Difference]: Without dead ends: 375 [2021-12-14 14:35:23,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-14 14:35:23,220 INFO L933 BasicCegarLoop]: 473 mSDtfsCounter, 117 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1756 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 14:35:23,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 1756 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:35:23,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-12-14 14:35:23,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2021-12-14 14:35:23,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 288 states have (on average 1.5208333333333333) internal successors, (438), 292 states have internal predecessors, (438), 62 states have call successors, (62), 23 states have call predecessors, (62), 24 states have return successors, (63), 61 states have call predecessors, (63), 61 states have call successors, (63) [2021-12-14 14:35:23,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 563 transitions. [2021-12-14 14:35:23,241 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 563 transitions. Word has length 147 [2021-12-14 14:35:23,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:35:23,241 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 563 transitions. [2021-12-14 14:35:23,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-14 14:35:23,241 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 563 transitions. [2021-12-14 14:35:23,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-14 14:35:23,243 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:35:23,244 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:35:23,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-14 14:35:23,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:35:23,461 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:35:23,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:35:23,462 INFO L85 PathProgramCache]: Analyzing trace with hash -860675365, now seen corresponding path program 1 times [2021-12-14 14:35:23,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:35:23,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280326132] [2021-12-14 14:35:23,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:35:23,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:35:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:23,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:35:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:23,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:35:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:23,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:35:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:23,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:35:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:23,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-14 14:35:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:23,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-14 14:35:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:23,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 14:35:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:23,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 14:35:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:23,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 14:35:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:23,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 14:35:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:23,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-14 14:35:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:23,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 14:35:23,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:23,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-14 14:35:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:23,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-14 14:35:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:23,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 14:35:23,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:23,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 14:35:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:23,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-14 14:35:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:23,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-14 14:35:23,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:23,648 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-14 14:35:23,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:35:23,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280326132] [2021-12-14 14:35:23,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280326132] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:35:23,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830536649] [2021-12-14 14:35:23,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:35:23,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:35:23,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:35:23,664 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) [2021-12-14 14:35:23,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-14 14:35:23,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:23,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 1189 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 14:35:23,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:35:24,100 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-14 14:35:24,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:35:24,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830536649] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:35:24,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:35:24,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2021-12-14 14:35:24,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362327054] [2021-12-14 14:35:24,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:35:24,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 14:35:24,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:35:24,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 14:35:24,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-14 14:35:24,102 INFO L87 Difference]: Start difference. First operand 375 states and 563 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-14 14:35:24,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:35:24,153 INFO L93 Difference]: Finished difference Result 739 states and 1115 transitions. [2021-12-14 14:35:24,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 14:35:24,154 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 148 [2021-12-14 14:35:24,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:35:24,156 INFO L225 Difference]: With dead ends: 739 [2021-12-14 14:35:24,157 INFO L226 Difference]: Without dead ends: 377 [2021-12-14 14:35:24,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-12-14 14:35:24,159 INFO L933 BasicCegarLoop]: 471 mSDtfsCounter, 116 mSDsluCounter, 1274 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1745 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 14:35:24,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 1745 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:35:24,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-12-14 14:35:24,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2021-12-14 14:35:24,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 289 states have (on average 1.519031141868512) internal successors, (439), 294 states have internal predecessors, (439), 62 states have call successors, (62), 23 states have call predecessors, (62), 25 states have return successors, (68), 61 states have call predecessors, (68), 61 states have call successors, (68) [2021-12-14 14:35:24,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 569 transitions. [2021-12-14 14:35:24,181 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 569 transitions. Word has length 148 [2021-12-14 14:35:24,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:35:24,182 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 569 transitions. [2021-12-14 14:35:24,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-14 14:35:24,182 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 569 transitions. [2021-12-14 14:35:24,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-14 14:35:24,185 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:35:24,185 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:35:24,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-14 14:35:24,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:35:24,418 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:35:24,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:35:24,419 INFO L85 PathProgramCache]: Analyzing trace with hash -331605216, now seen corresponding path program 1 times [2021-12-14 14:35:24,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:35:24,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807180885] [2021-12-14 14:35:24,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:35:24,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:35:24,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:24,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:35:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:24,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:35:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:24,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:35:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:24,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:35:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:24,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:35:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:24,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 14:35:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:24,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-14 14:35:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:24,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 14:35:24,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:24,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-14 14:35:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:24,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 14:35:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:24,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-14 14:35:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:24,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 14:35:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:24,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 14:35:24,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:24,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 14:35:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:24,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 14:35:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:24,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 14:35:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:24,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 14:35:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:24,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-14 14:35:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:24,553 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-14 14:35:24,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:35:24,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807180885] [2021-12-14 14:35:24,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807180885] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:35:24,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:35:24,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 14:35:24,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513886350] [2021-12-14 14:35:24,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:35:24,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 14:35:24,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:35:24,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 14:35:24,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 14:35:24,555 INFO L87 Difference]: Start difference. First operand 377 states and 569 transitions. Second operand has 8 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-14 14:35:25,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:35:25,513 INFO L93 Difference]: Finished difference Result 804 states and 1220 transitions. [2021-12-14 14:35:25,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:35:25,513 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 149 [2021-12-14 14:35:25,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:35:25,515 INFO L225 Difference]: With dead ends: 804 [2021-12-14 14:35:25,516 INFO L226 Difference]: Without dead ends: 450 [2021-12-14 14:35:25,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-12-14 14:35:25,517 INFO L933 BasicCegarLoop]: 481 mSDtfsCounter, 958 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 14:35:25,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [975 Valid, 1307 Invalid, 1593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 14:35:25,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-12-14 14:35:25,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 377. [2021-12-14 14:35:25,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 289 states have (on average 1.519031141868512) internal successors, (439), 294 states have internal predecessors, (439), 62 states have call successors, (62), 23 states have call predecessors, (62), 25 states have return successors, (67), 61 states have call predecessors, (67), 61 states have call successors, (67) [2021-12-14 14:35:25,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 568 transitions. [2021-12-14 14:35:25,532 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 568 transitions. Word has length 149 [2021-12-14 14:35:25,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:35:25,532 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 568 transitions. [2021-12-14 14:35:25,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-14 14:35:25,532 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 568 transitions. [2021-12-14 14:35:25,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-14 14:35:25,534 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:35:25,534 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:35:25,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 14:35:25,535 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:35:25,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:35:25,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1164230253, now seen corresponding path program 2 times [2021-12-14 14:35:25,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:35:25,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586265852] [2021-12-14 14:35:25,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:35:25,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:35:25,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:25,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:35:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:25,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:35:25,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:25,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:35:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:25,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:35:25,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:25,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:35:25,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:25,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 14:35:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:25,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-14 14:35:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:25,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 14:35:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:25,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 14:35:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:25,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 14:35:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:25,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 14:35:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:25,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 14:35:25,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:25,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 14:35:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:25,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-14 14:35:25,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:25,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 14:35:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:25,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-14 14:35:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:25,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-14 14:35:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:25,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 14:35:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:25,626 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-14 14:35:25,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:35:25,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586265852] [2021-12-14 14:35:25,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586265852] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:35:25,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:35:25,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 14:35:25,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289332121] [2021-12-14 14:35:25,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:35:25,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 14:35:25,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:35:25,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 14:35:25,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 14:35:25,628 INFO L87 Difference]: Start difference. First operand 377 states and 568 transitions. Second operand has 8 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-14 14:35:26,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:35:26,504 INFO L93 Difference]: Finished difference Result 806 states and 1223 transitions. [2021-12-14 14:35:26,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:35:26,505 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 150 [2021-12-14 14:35:26,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:35:26,508 INFO L225 Difference]: With dead ends: 806 [2021-12-14 14:35:26,508 INFO L226 Difference]: Without dead ends: 452 [2021-12-14 14:35:26,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-12-14 14:35:26,509 INFO L933 BasicCegarLoop]: 476 mSDtfsCounter, 964 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 14:35:26,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [982 Valid, 1299 Invalid, 1584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 14:35:26,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-12-14 14:35:26,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 379. [2021-12-14 14:35:26,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 290 states have (on average 1.5172413793103448) internal successors, (440), 296 states have internal predecessors, (440), 62 states have call successors, (62), 23 states have call predecessors, (62), 26 states have return successors, (69), 61 states have call predecessors, (69), 61 states have call successors, (69) [2021-12-14 14:35:26,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 571 transitions. [2021-12-14 14:35:26,523 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 571 transitions. Word has length 150 [2021-12-14 14:35:26,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:35:26,524 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 571 transitions. [2021-12-14 14:35:26,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-14 14:35:26,524 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 571 transitions. [2021-12-14 14:35:26,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-14 14:35:26,526 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:35:26,526 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:35:26,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 14:35:26,526 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:35:26,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:35:26,527 INFO L85 PathProgramCache]: Analyzing trace with hash -896990777, now seen corresponding path program 1 times [2021-12-14 14:35:26,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:35:26,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223599417] [2021-12-14 14:35:26,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:35:26,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:35:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:26,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:35:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:26,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:35:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:26,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:35:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:26,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:35:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:26,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:35:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:26,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:35:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:26,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-14 14:35:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:26,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 14:35:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:26,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 14:35:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:26,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 14:35:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:26,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 14:35:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:26,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-14 14:35:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:26,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 14:35:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:26,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-14 14:35:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:26,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 14:35:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:26,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-14 14:35:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:26,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-14 14:35:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:26,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-14 14:35:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:26,614 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-14 14:35:26,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:35:26,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223599417] [2021-12-14 14:35:26,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223599417] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:35:26,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:35:26,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 14:35:26,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366107540] [2021-12-14 14:35:26,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:35:26,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 14:35:26,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:35:26,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 14:35:26,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 14:35:26,615 INFO L87 Difference]: Start difference. First operand 379 states and 571 transitions. Second operand has 8 states, 7 states have (on average 13.142857142857142) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-14 14:35:27,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:35:27,530 INFO L93 Difference]: Finished difference Result 806 states and 1222 transitions. [2021-12-14 14:35:27,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 14:35:27,530 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.142857142857142) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 151 [2021-12-14 14:35:27,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:35:27,533 INFO L225 Difference]: With dead ends: 806 [2021-12-14 14:35:27,533 INFO L226 Difference]: Without dead ends: 452 [2021-12-14 14:35:27,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-12-14 14:35:27,534 INFO L933 BasicCegarLoop]: 483 mSDtfsCounter, 952 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 1587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 14:35:27,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [970 Valid, 1309 Invalid, 1587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 14:35:27,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-12-14 14:35:27,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 379. [2021-12-14 14:35:27,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 290 states have (on average 1.5172413793103448) internal successors, (440), 296 states have internal predecessors, (440), 62 states have call successors, (62), 23 states have call predecessors, (62), 26 states have return successors, (69), 61 states have call predecessors, (69), 61 states have call successors, (69) [2021-12-14 14:35:27,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 571 transitions. [2021-12-14 14:35:27,548 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 571 transitions. Word has length 151 [2021-12-14 14:35:27,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:35:27,563 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 571 transitions. [2021-12-14 14:35:27,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.142857142857142) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-14 14:35:27,564 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 571 transitions. [2021-12-14 14:35:27,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-14 14:35:27,565 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:35:27,566 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:35:27,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 14:35:27,566 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:35:27,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:35:27,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1469044293, now seen corresponding path program 1 times [2021-12-14 14:35:27,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:35:27,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145002666] [2021-12-14 14:35:27,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:35:27,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:35:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:27,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:35:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:27,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:35:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:27,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:35:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:27,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:35:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:27,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:35:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:27,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:35:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:27,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-14 14:35:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:27,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 14:35:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:27,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 14:35:27,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:27,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 14:35:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:27,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 14:35:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:27,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-14 14:35:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:27,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 14:35:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:27,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-14 14:35:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:27,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 14:35:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:27,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-14 14:35:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:27,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-14 14:35:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:27,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-14 14:35:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:27,728 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-14 14:35:27,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:35:27,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145002666] [2021-12-14 14:35:27,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145002666] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:35:27,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:35:27,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-14 14:35:27,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467280908] [2021-12-14 14:35:27,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:35:27,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 14:35:27,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:35:27,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 14:35:27,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-14 14:35:27,735 INFO L87 Difference]: Start difference. First operand 379 states and 571 transitions. Second operand has 11 states, 10 states have (on average 9.5) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-14 14:35:28,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:35:28,990 INFO L93 Difference]: Finished difference Result 804 states and 1217 transitions. [2021-12-14 14:35:28,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 14:35:28,991 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.5) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 151 [2021-12-14 14:35:28,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:35:28,993 INFO L225 Difference]: With dead ends: 804 [2021-12-14 14:35:28,993 INFO L226 Difference]: Without dead ends: 452 [2021-12-14 14:35:28,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-12-14 14:35:28,995 INFO L933 BasicCegarLoop]: 482 mSDtfsCounter, 1036 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 2476 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 1743 SdHoareTripleChecker+Invalid, 2822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 2476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-14 14:35:28,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1036 Valid, 1743 Invalid, 2822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 2476 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-14 14:35:28,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-12-14 14:35:29,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 379. [2021-12-14 14:35:29,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 290 states have (on average 1.5172413793103448) internal successors, (440), 296 states have internal predecessors, (440), 62 states have call successors, (62), 23 states have call predecessors, (62), 26 states have return successors, (68), 61 states have call predecessors, (68), 61 states have call successors, (68) [2021-12-14 14:35:29,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 570 transitions. [2021-12-14 14:35:29,012 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 570 transitions. Word has length 151 [2021-12-14 14:35:29,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:35:29,013 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 570 transitions. [2021-12-14 14:35:29,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.5) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-14 14:35:29,013 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 570 transitions. [2021-12-14 14:35:29,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-14 14:35:29,015 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:35:29,015 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:35:29,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 14:35:29,015 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:35:29,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:35:29,016 INFO L85 PathProgramCache]: Analyzing trace with hash 2010311812, now seen corresponding path program 2 times [2021-12-14 14:35:29,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:35:29,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338077256] [2021-12-14 14:35:29,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:35:29,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:35:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:29,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:35:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:29,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:35:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:29,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:35:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:29,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:35:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:29,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:35:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:29,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:35:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:29,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 14:35:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:29,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 14:35:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:29,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-14 14:35:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:29,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 14:35:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:29,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 14:35:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:29,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 14:35:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:29,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-14 14:35:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:29,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 14:35:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:29,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 14:35:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:29,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 14:35:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:29,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-14 14:35:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:29,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-14 14:35:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:29,125 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-14 14:35:29,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:35:29,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338077256] [2021-12-14 14:35:29,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338077256] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:35:29,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:35:29,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-14 14:35:29,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301480661] [2021-12-14 14:35:29,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:35:29,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 14:35:29,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:35:29,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 14:35:29,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-14 14:35:29,127 INFO L87 Difference]: Start difference. First operand 379 states and 570 transitions. Second operand has 11 states, 10 states have (on average 9.6) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-14 14:35:30,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:35:30,412 INFO L93 Difference]: Finished difference Result 806 states and 1223 transitions. [2021-12-14 14:35:30,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 14:35:30,413 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.6) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 152 [2021-12-14 14:35:30,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:35:30,415 INFO L225 Difference]: With dead ends: 806 [2021-12-14 14:35:30,415 INFO L226 Difference]: Without dead ends: 454 [2021-12-14 14:35:30,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-12-14 14:35:30,416 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 1056 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 2435 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 2780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 2435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-14 14:35:30,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1056 Valid, 1725 Invalid, 2780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 2435 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-14 14:35:30,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-12-14 14:35:30,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 381. [2021-12-14 14:35:30,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 291 states have (on average 1.5154639175257731) internal successors, (441), 298 states have internal predecessors, (441), 62 states have call successors, (62), 23 states have call predecessors, (62), 27 states have return successors, (73), 61 states have call predecessors, (73), 61 states have call successors, (73) [2021-12-14 14:35:30,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 576 transitions. [2021-12-14 14:35:30,443 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 576 transitions. Word has length 152 [2021-12-14 14:35:30,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:35:30,443 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 576 transitions. [2021-12-14 14:35:30,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.6) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-14 14:35:30,443 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 576 transitions. [2021-12-14 14:35:30,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-14 14:35:30,445 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:35:30,445 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:35:30,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 14:35:30,445 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:35:30,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:35:30,446 INFO L85 PathProgramCache]: Analyzing trace with hash -986725718, now seen corresponding path program 1 times [2021-12-14 14:35:30,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:35:30,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596670794] [2021-12-14 14:35:30,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:35:30,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:35:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:30,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:35:30,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:30,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:35:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:30,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:35:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:30,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:35:30,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:30,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:35:30,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:30,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:35:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:30,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-14 14:35:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:30,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 14:35:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:30,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-14 14:35:30,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:30,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-14 14:35:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:30,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 14:35:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:30,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-14 14:35:30,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:30,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 14:35:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:30,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-14 14:35:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:30,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 14:35:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:30,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 14:35:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:30,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-14 14:35:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:30,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-14 14:35:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:30,534 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:35:30,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:35:30,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596670794] [2021-12-14 14:35:30,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596670794] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:35:30,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538131219] [2021-12-14 14:35:30,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:35:30,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:35:30,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:35:30,560 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) [2021-12-14 14:35:30,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-14 14:35:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:30,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 1194 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 14:35:30,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:35:31,039 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:35:31,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 14:35:31,308 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:35:31,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538131219] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 14:35:31,309 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 14:35:31,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2021-12-14 14:35:31,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525542913] [2021-12-14 14:35:31,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 14:35:31,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 14:35:31,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:35:31,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 14:35:31,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:35:31,312 INFO L87 Difference]: Start difference. First operand 381 states and 576 transitions. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 7 states have internal predecessors, (135), 2 states have call successors, (40), 5 states have call predecessors, (40), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-14 14:35:32,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:35:32,150 INFO L93 Difference]: Finished difference Result 960 states and 1521 transitions. [2021-12-14 14:35:32,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 14:35:32,150 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 7 states have internal predecessors, (135), 2 states have call successors, (40), 5 states have call predecessors, (40), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 153 [2021-12-14 14:35:32,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:35:32,154 INFO L225 Difference]: With dead ends: 960 [2021-12-14 14:35:32,154 INFO L226 Difference]: Without dead ends: 781 [2021-12-14 14:35:32,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-12-14 14:35:32,155 INFO L933 BasicCegarLoop]: 583 mSDtfsCounter, 1307 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1352 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 14:35:32,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1352 Valid, 1523 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 14:35:32,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2021-12-14 14:35:32,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 684. [2021-12-14 14:35:32,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 530 states have (on average 1.5830188679245283) internal successors, (839), 537 states have internal predecessors, (839), 126 states have call successors, (126), 23 states have call predecessors, (126), 27 states have return successors, (147), 125 states have call predecessors, (147), 125 states have call successors, (147) [2021-12-14 14:35:32,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1112 transitions. [2021-12-14 14:35:32,192 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1112 transitions. Word has length 153 [2021-12-14 14:35:32,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:35:32,192 INFO L470 AbstractCegarLoop]: Abstraction has 684 states and 1112 transitions. [2021-12-14 14:35:32,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 7 states have internal predecessors, (135), 2 states have call successors, (40), 5 states have call predecessors, (40), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-14 14:35:32,192 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1112 transitions. [2021-12-14 14:35:32,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-14 14:35:32,195 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:35:32,195 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:35:32,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-14 14:35:32,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:35:32,426 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:35:32,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:35:32,426 INFO L85 PathProgramCache]: Analyzing trace with hash -194088249, now seen corresponding path program 1 times [2021-12-14 14:35:32,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:35:32,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655127400] [2021-12-14 14:35:32,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:35:32,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:35:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:32,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:35:32,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:32,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:35:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:32,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:35:32,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:32,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:35:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:32,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:35:32,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:32,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:35:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:32,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 14:35:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:32,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 14:35:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:32,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-14 14:35:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:32,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-14 14:35:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:32,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-14 14:35:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:32,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 14:35:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:32,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-14 14:35:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:32,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 14:35:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:32,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 14:35:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:32,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-14 14:35:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:32,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-14 14:35:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:32,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-14 14:35:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:32,575 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:35:32,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:35:32,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655127400] [2021-12-14 14:35:32,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655127400] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:35:32,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:35:32,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 14:35:32,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398462953] [2021-12-14 14:35:32,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:35:32,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 14:35:32,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:35:32,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 14:35:32,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 14:35:32,577 INFO L87 Difference]: Start difference. First operand 684 states and 1112 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 14:35:33,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:35:33,305 INFO L93 Difference]: Finished difference Result 1681 states and 2800 transitions. [2021-12-14 14:35:33,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 14:35:33,305 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 159 [2021-12-14 14:35:33,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:35:33,327 INFO L225 Difference]: With dead ends: 1681 [2021-12-14 14:35:33,327 INFO L226 Difference]: Without dead ends: 1065 [2021-12-14 14:35:33,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:35:33,330 INFO L933 BasicCegarLoop]: 525 mSDtfsCounter, 937 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 14:35:33,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [953 Valid, 1117 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 14:35:33,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2021-12-14 14:35:33,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 984. [2021-12-14 14:35:33,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 766 states have (on average 1.597911227154047) internal successors, (1224), 773 states have internal predecessors, (1224), 190 states have call successors, (190), 23 states have call predecessors, (190), 27 states have return successors, (221), 189 states have call predecessors, (221), 189 states have call successors, (221) [2021-12-14 14:35:33,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1635 transitions. [2021-12-14 14:35:33,416 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1635 transitions. Word has length 159 [2021-12-14 14:35:33,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:35:33,416 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1635 transitions. [2021-12-14 14:35:33,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 14:35:33,416 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1635 transitions. [2021-12-14 14:35:33,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-14 14:35:33,420 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:35:33,420 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:35:33,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 14:35:33,420 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:35:33,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:35:33,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1989444475, now seen corresponding path program 1 times [2021-12-14 14:35:33,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:35:33,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994609333] [2021-12-14 14:35:33,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:35:33,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:35:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:33,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:35:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:33,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:35:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:33,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:35:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:33,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:35:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:33,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:35:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:33,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:35:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:33,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 14:35:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:33,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-14 14:35:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:33,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 14:35:33,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:33,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-14 14:35:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:33,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-14 14:35:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:33,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 14:35:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:33,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 14:35:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:33,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 14:35:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:33,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 14:35:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:33,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-14 14:35:33,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:33,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-14 14:35:33,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:33,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-14 14:35:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:33,525 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:35:33,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:35:33,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994609333] [2021-12-14 14:35:33,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994609333] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:35:33,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:35:33,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 14:35:33,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54395787] [2021-12-14 14:35:33,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:35:33,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 14:35:33,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:35:33,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 14:35:33,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 14:35:33,528 INFO L87 Difference]: Start difference. First operand 984 states and 1635 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 14:35:34,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:35:34,162 INFO L93 Difference]: Finished difference Result 2396 states and 4045 transitions. [2021-12-14 14:35:34,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 14:35:34,162 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 160 [2021-12-14 14:35:34,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:35:34,168 INFO L225 Difference]: With dead ends: 2396 [2021-12-14 14:35:34,168 INFO L226 Difference]: Without dead ends: 1533 [2021-12-14 14:35:34,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:35:34,172 INFO L933 BasicCegarLoop]: 526 mSDtfsCounter, 923 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-14 14:35:34,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [938 Valid, 1098 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-14 14:35:34,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2021-12-14 14:35:34,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 1452. [2021-12-14 14:35:34,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1139 states have (on average 1.6075504828797191) internal successors, (1831), 1146 states have internal predecessors, (1831), 285 states have call successors, (285), 23 states have call predecessors, (285), 27 states have return successors, (316), 284 states have call predecessors, (316), 284 states have call successors, (316) [2021-12-14 14:35:34,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 2432 transitions. [2021-12-14 14:35:34,231 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 2432 transitions. Word has length 160 [2021-12-14 14:35:34,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:35:34,232 INFO L470 AbstractCegarLoop]: Abstraction has 1452 states and 2432 transitions. [2021-12-14 14:35:34,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 14:35:34,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 2432 transitions. [2021-12-14 14:35:34,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-14 14:35:34,238 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:35:34,238 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:35:34,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 14:35:34,238 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:35:34,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:35:34,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1091927209, now seen corresponding path program 1 times [2021-12-14 14:35:34,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:35:34,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671458351] [2021-12-14 14:35:34,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:35:34,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:35:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:34,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:35:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:34,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:35:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:34,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:35:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:34,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:35:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:34,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:35:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:34,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:35:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:34,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 14:35:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:34,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-14 14:35:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:34,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 14:35:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:34,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 14:35:34,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:34,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 14:35:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:34,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 14:35:34,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:34,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-14 14:35:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:34,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-14 14:35:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:34,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 14:35:34,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:34,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-14 14:35:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:34,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-14 14:35:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:34,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-14 14:35:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:34,322 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:35:34,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:35:34,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671458351] [2021-12-14 14:35:34,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671458351] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:35:34,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:35:34,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 14:35:34,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610056750] [2021-12-14 14:35:34,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:35:34,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 14:35:34,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:35:34,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 14:35:34,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 14:35:34,324 INFO L87 Difference]: Start difference. First operand 1452 states and 2432 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 14:35:35,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:35:35,207 INFO L93 Difference]: Finished difference Result 3443 states and 5886 transitions. [2021-12-14 14:35:35,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 14:35:35,207 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 161 [2021-12-14 14:35:35,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:35:35,231 INFO L225 Difference]: With dead ends: 3443 [2021-12-14 14:35:35,231 INFO L226 Difference]: Without dead ends: 2237 [2021-12-14 14:35:35,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:35:35,236 INFO L933 BasicCegarLoop]: 513 mSDtfsCounter, 927 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 14:35:35,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [942 Valid, 1067 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 14:35:35,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2237 states. [2021-12-14 14:35:35,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2237 to 2156. [2021-12-14 14:35:35,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 1720 states have (on average 1.6151162790697675) internal successors, (2778), 1727 states have internal predecessors, (2778), 408 states have call successors, (408), 23 states have call predecessors, (408), 27 states have return successors, (455), 407 states have call predecessors, (455), 407 states have call successors, (455) [2021-12-14 14:35:35,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 3641 transitions. [2021-12-14 14:35:35,403 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 3641 transitions. Word has length 161 [2021-12-14 14:35:35,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:35:35,403 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 3641 transitions. [2021-12-14 14:35:35,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 14:35:35,404 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 3641 transitions. [2021-12-14 14:35:35,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-14 14:35:35,428 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:35:35,428 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:35:35,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-14 14:35:35,428 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:35:35,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:35:35,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1160293020, now seen corresponding path program 1 times [2021-12-14 14:35:35,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:35:35,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253494686] [2021-12-14 14:35:35,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:35:35,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:35:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:35,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:35:35,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:35,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:35:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:35,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:35:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:35,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:35:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:35,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:35:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:35,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:35:35,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:35,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 14:35:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:35,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 14:35:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:35,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 14:35:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:35,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 14:35:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:35,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 14:35:35,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:35,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-14 14:35:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:35,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-14 14:35:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:35,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 14:35:35,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:35,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 14:35:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:35,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-14 14:35:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:35,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-14 14:35:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:35,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 14:35:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:35,560 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:35:35,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:35:35,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253494686] [2021-12-14 14:35:35,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253494686] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:35:35,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:35:35,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 14:35:35,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220357197] [2021-12-14 14:35:35,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:35:35,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 14:35:35,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:35:35,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 14:35:35,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 14:35:35,563 INFO L87 Difference]: Start difference. First operand 2156 states and 3641 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 14:35:36,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:35:36,252 INFO L93 Difference]: Finished difference Result 5062 states and 8740 transitions. [2021-12-14 14:35:36,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 14:35:36,252 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 162 [2021-12-14 14:35:36,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:35:36,271 INFO L225 Difference]: With dead ends: 5062 [2021-12-14 14:35:36,272 INFO L226 Difference]: Without dead ends: 3356 [2021-12-14 14:35:36,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:35:36,280 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 895 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-14 14:35:36,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [910 Valid, 1090 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-14 14:35:36,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3356 states. [2021-12-14 14:35:36,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3356 to 3275. [2021-12-14 14:35:36,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3275 states, 2660 states have (on average 1.619924812030075) internal successors, (4309), 2667 states have internal predecessors, (4309), 587 states have call successors, (587), 23 states have call predecessors, (587), 27 states have return successors, (660), 586 states have call predecessors, (660), 586 states have call successors, (660) [2021-12-14 14:35:36,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3275 states to 3275 states and 5556 transitions. [2021-12-14 14:35:36,416 INFO L78 Accepts]: Start accepts. Automaton has 3275 states and 5556 transitions. Word has length 162 [2021-12-14 14:35:36,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:35:36,417 INFO L470 AbstractCegarLoop]: Abstraction has 3275 states and 5556 transitions. [2021-12-14 14:35:36,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 14:35:36,417 INFO L276 IsEmpty]: Start isEmpty. Operand 3275 states and 5556 transitions. [2021-12-14 14:35:36,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-14 14:35:36,428 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:35:36,428 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:35:36,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-14 14:35:36,429 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:35:36,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:35:36,429 INFO L85 PathProgramCache]: Analyzing trace with hash -2049543131, now seen corresponding path program 1 times [2021-12-14 14:35:36,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:35:36,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933279001] [2021-12-14 14:35:36,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:35:36,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:35:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:36,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:35:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:36,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:35:36,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:36,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:35:36,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:36,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:35:36,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:36,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:35:36,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:36,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:35:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:36,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 14:35:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:36,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 14:35:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:36,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-14 14:35:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:36,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 14:35:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:36,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 14:35:36,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:36,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 14:35:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:36,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-14 14:35:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:36,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 14:35:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:36,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 14:35:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:36,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 14:35:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:36,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-14 14:35:36,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:36,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-14 14:35:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:36,499 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:35:36,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:35:36,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933279001] [2021-12-14 14:35:36,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933279001] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:35:36,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:35:36,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 14:35:36,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220916090] [2021-12-14 14:35:36,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:35:36,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 14:35:36,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:35:36,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 14:35:36,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 14:35:36,501 INFO L87 Difference]: Start difference. First operand 3275 states and 5556 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 14:35:37,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:35:37,196 INFO L93 Difference]: Finished difference Result 7980 states and 13839 transitions. [2021-12-14 14:35:37,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 14:35:37,197 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 163 [2021-12-14 14:35:37,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:35:37,250 INFO L225 Difference]: With dead ends: 7980 [2021-12-14 14:35:37,250 INFO L226 Difference]: Without dead ends: 5387 [2021-12-14 14:35:37,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:35:37,257 INFO L933 BasicCegarLoop]: 502 mSDtfsCounter, 953 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-14 14:35:37,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [969 Valid, 1067 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-14 14:35:37,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5387 states. [2021-12-14 14:35:37,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5387 to 5306. [2021-12-14 14:35:37,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5306 states, 4315 states have (on average 1.613209733487833) internal successors, (6961), 4322 states have internal predecessors, (6961), 963 states have call successors, (963), 23 states have call predecessors, (963), 27 states have return successors, (1080), 962 states have call predecessors, (1080), 962 states have call successors, (1080) [2021-12-14 14:35:37,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5306 states to 5306 states and 9004 transitions. [2021-12-14 14:35:37,481 INFO L78 Accepts]: Start accepts. Automaton has 5306 states and 9004 transitions. Word has length 163 [2021-12-14 14:35:37,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:35:37,482 INFO L470 AbstractCegarLoop]: Abstraction has 5306 states and 9004 transitions. [2021-12-14 14:35:37,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 14:35:37,483 INFO L276 IsEmpty]: Start isEmpty. Operand 5306 states and 9004 transitions. [2021-12-14 14:35:37,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-14 14:35:37,500 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:35:37,500 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:35:37,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-14 14:35:37,500 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:35:37,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:35:37,501 INFO L85 PathProgramCache]: Analyzing trace with hash 2045579040, now seen corresponding path program 1 times [2021-12-14 14:35:37,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:35:37,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161403692] [2021-12-14 14:35:37,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:35:37,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:35:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:37,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:35:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:37,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:35:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:37,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:35:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:37,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:35:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:37,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:35:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:37,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:35:37,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:37,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 14:35:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:37,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 14:35:37,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:37,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-14 14:35:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:37,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 14:35:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:37,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-14 14:35:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:37,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-14 14:35:37,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:37,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 14:35:37,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:37,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-14 14:35:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:37,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 14:35:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:37,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-14 14:35:37,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:37,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-14 14:35:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:37,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-14 14:35:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:37,571 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:35:37,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:35:37,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161403692] [2021-12-14 14:35:37,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161403692] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:35:37,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:35:37,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 14:35:37,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057190803] [2021-12-14 14:35:37,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:35:37,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 14:35:37,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:35:37,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 14:35:37,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 14:35:37,574 INFO L87 Difference]: Start difference. First operand 5306 states and 9004 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 14:35:38,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:35:38,433 INFO L93 Difference]: Finished difference Result 13122 states and 22748 transitions. [2021-12-14 14:35:38,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 14:35:38,434 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 164 [2021-12-14 14:35:38,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:35:38,473 INFO L225 Difference]: With dead ends: 13122 [2021-12-14 14:35:38,474 INFO L226 Difference]: Without dead ends: 8875 [2021-12-14 14:35:38,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:35:38,483 INFO L933 BasicCegarLoop]: 505 mSDtfsCounter, 933 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 14:35:38,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [949 Valid, 1055 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 14:35:38,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8875 states. [2021-12-14 14:35:38,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8875 to 8794. [2021-12-14 14:35:38,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8794 states, 7197 states have (on average 1.6110879533138809) internal successors, (11595), 7204 states have internal predecessors, (11595), 1569 states have call successors, (1569), 23 states have call predecessors, (1569), 27 states have return successors, (1764), 1568 states have call predecessors, (1764), 1568 states have call successors, (1764) [2021-12-14 14:35:38,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8794 states to 8794 states and 14928 transitions. [2021-12-14 14:35:38,799 INFO L78 Accepts]: Start accepts. Automaton has 8794 states and 14928 transitions. Word has length 164 [2021-12-14 14:35:38,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:35:38,800 INFO L470 AbstractCegarLoop]: Abstraction has 8794 states and 14928 transitions. [2021-12-14 14:35:38,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 14:35:38,800 INFO L276 IsEmpty]: Start isEmpty. Operand 8794 states and 14928 transitions. [2021-12-14 14:35:38,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-12-14 14:35:38,828 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:35:38,828 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:35:38,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-14 14:35:38,829 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:35:38,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:35:38,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1857828889, now seen corresponding path program 1 times [2021-12-14 14:35:38,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:35:38,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783000379] [2021-12-14 14:35:38,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:35:38,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:35:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:38,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:35:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:38,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:35:38,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:38,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:35:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:38,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:35:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:38,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:35:38,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:38,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:35:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:38,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 14:35:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:38,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 14:35:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:38,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-14 14:35:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:38,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 14:35:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:38,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 14:35:38,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:38,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-14 14:35:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:38,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-14 14:35:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:38,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-14 14:35:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:38,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 14:35:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:38,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-14 14:35:38,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:38,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-14 14:35:38,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:38,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-14 14:35:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:38,970 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:35:38,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:35:38,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783000379] [2021-12-14 14:35:38,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783000379] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:35:38,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:35:38,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 14:35:38,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11614860] [2021-12-14 14:35:38,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:35:38,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 14:35:38,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:35:38,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 14:35:38,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 14:35:38,973 INFO L87 Difference]: Start difference. First operand 8794 states and 14928 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 14:35:40,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:35:40,031 INFO L93 Difference]: Finished difference Result 22781 states and 39454 transitions. [2021-12-14 14:35:40,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 14:35:40,031 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 165 [2021-12-14 14:35:40,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:35:40,145 INFO L225 Difference]: With dead ends: 22781 [2021-12-14 14:35:40,145 INFO L226 Difference]: Without dead ends: 15468 [2021-12-14 14:35:40,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:35:40,195 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 927 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 14:35:40,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [943 Valid, 1110 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 14:35:40,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15468 states. [2021-12-14 14:35:40,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15468 to 15387. [2021-12-14 14:35:40,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15387 states, 12587 states have (on average 1.6017319456582189) internal successors, (20161), 12594 states have internal predecessors, (20161), 2772 states have call successors, (2772), 23 states have call predecessors, (2772), 27 states have return successors, (3111), 2771 states have call predecessors, (3111), 2771 states have call successors, (3111) [2021-12-14 14:35:40,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15387 states to 15387 states and 26044 transitions. [2021-12-14 14:35:40,901 INFO L78 Accepts]: Start accepts. Automaton has 15387 states and 26044 transitions. Word has length 165 [2021-12-14 14:35:40,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:35:40,901 INFO L470 AbstractCegarLoop]: Abstraction has 15387 states and 26044 transitions. [2021-12-14 14:35:40,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 14:35:40,901 INFO L276 IsEmpty]: Start isEmpty. Operand 15387 states and 26044 transitions. [2021-12-14 14:35:40,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-14 14:35:40,942 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:35:40,943 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:35:40,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-14 14:35:40,943 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:35:40,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:35:40,944 INFO L85 PathProgramCache]: Analyzing trace with hash -404028959, now seen corresponding path program 1 times [2021-12-14 14:35:40,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:35:40,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277209174] [2021-12-14 14:35:40,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:35:40,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:35:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:40,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:35:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:40,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:35:40,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:41,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:35:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:41,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:35:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:41,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:35:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:41,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:35:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:41,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 14:35:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:41,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 14:35:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:41,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-14 14:35:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:41,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 14:35:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:41,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 14:35:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:41,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 14:35:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:41,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-14 14:35:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:41,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 14:35:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:41,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 14:35:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:41,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-14 14:35:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:41,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-14 14:35:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:41,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-14 14:35:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:41,027 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:35:41,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:35:41,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277209174] [2021-12-14 14:35:41,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277209174] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:35:41,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:35:41,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 14:35:41,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046055525] [2021-12-14 14:35:41,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:35:41,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 14:35:41,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:35:41,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 14:35:41,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 14:35:41,028 INFO L87 Difference]: Start difference. First operand 15387 states and 26044 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 14:35:42,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:35:42,505 INFO L93 Difference]: Finished difference Result 40737 states and 70437 transitions. [2021-12-14 14:35:42,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 14:35:42,506 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 166 [2021-12-14 14:35:42,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:35:42,598 INFO L225 Difference]: With dead ends: 40737 [2021-12-14 14:35:42,598 INFO L226 Difference]: Without dead ends: 27438 [2021-12-14 14:35:42,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:35:42,632 INFO L933 BasicCegarLoop]: 527 mSDtfsCounter, 893 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 14:35:42,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [908 Valid, 1081 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 14:35:42,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27438 states. [2021-12-14 14:35:43,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27438 to 27357. [2021-12-14 14:35:43,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27357 states, 22518 states have (on average 1.5973443467448263) internal successors, (35969), 22525 states have internal predecessors, (35969), 4811 states have call successors, (4811), 23 states have call predecessors, (4811), 27 states have return successors, (5424), 4810 states have call predecessors, (5424), 4810 states have call successors, (5424) [2021-12-14 14:35:43,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27357 states to 27357 states and 46204 transitions. [2021-12-14 14:35:43,770 INFO L78 Accepts]: Start accepts. Automaton has 27357 states and 46204 transitions. Word has length 166 [2021-12-14 14:35:43,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:35:43,770 INFO L470 AbstractCegarLoop]: Abstraction has 27357 states and 46204 transitions. [2021-12-14 14:35:43,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 14:35:43,771 INFO L276 IsEmpty]: Start isEmpty. Operand 27357 states and 46204 transitions. [2021-12-14 14:35:43,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-14 14:35:43,823 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:35:43,823 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:35:43,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-14 14:35:43,823 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:35:43,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:35:43,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1407538167, now seen corresponding path program 1 times [2021-12-14 14:35:43,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:35:43,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355716804] [2021-12-14 14:35:43,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:35:43,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:35:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:43,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:35:43,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:43,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:35:43,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:43,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:35:43,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:43,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:35:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:43,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:35:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:43,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:35:43,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:43,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 14:35:43,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:43,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-14 14:35:43,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:43,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 14:35:43,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:43,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 14:35:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:43,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 14:35:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:43,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-14 14:35:43,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:43,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 14:35:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:43,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 14:35:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:43,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 14:35:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:43,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-14 14:35:43,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:43,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-14 14:35:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:43,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-14 14:35:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:43,915 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:35:43,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:35:43,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355716804] [2021-12-14 14:35:43,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355716804] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:35:43,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:35:43,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 14:35:43,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454771011] [2021-12-14 14:35:43,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:35:43,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 14:35:43,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:35:43,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 14:35:43,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 14:35:43,918 INFO L87 Difference]: Start difference. First operand 27357 states and 46204 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 14:35:46,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:35:46,109 INFO L93 Difference]: Finished difference Result 74524 states and 128036 transitions. [2021-12-14 14:35:46,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 14:35:46,109 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 167 [2021-12-14 14:35:46,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:35:46,264 INFO L225 Difference]: With dead ends: 74524 [2021-12-14 14:35:46,265 INFO L226 Difference]: Without dead ends: 49987 [2021-12-14 14:35:46,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:35:46,330 INFO L933 BasicCegarLoop]: 518 mSDtfsCounter, 917 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 14:35:46,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [933 Valid, 1080 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 14:35:46,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49987 states. [2021-12-14 14:35:48,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49987 to 49906. [2021-12-14 14:35:48,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49906 states, 41352 states have (on average 1.5914586960727413) internal successors, (65810), 41359 states have internal predecessors, (65810), 8526 states have call successors, (8526), 23 states have call predecessors, (8526), 27 states have return successors, (9671), 8525 states have call predecessors, (9671), 8525 states have call successors, (9671) [2021-12-14 14:35:48,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49906 states to 49906 states and 84007 transitions. [2021-12-14 14:35:48,599 INFO L78 Accepts]: Start accepts. Automaton has 49906 states and 84007 transitions. Word has length 167 [2021-12-14 14:35:48,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:35:48,599 INFO L470 AbstractCegarLoop]: Abstraction has 49906 states and 84007 transitions. [2021-12-14 14:35:48,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 14:35:48,599 INFO L276 IsEmpty]: Start isEmpty. Operand 49906 states and 84007 transitions. [2021-12-14 14:35:48,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-14 14:35:48,684 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:35:48,684 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:35:48,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-14 14:35:48,685 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:35:48,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:35:48,685 INFO L85 PathProgramCache]: Analyzing trace with hash -2075398847, now seen corresponding path program 1 times [2021-12-14 14:35:48,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:35:48,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136536265] [2021-12-14 14:35:48,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:35:48,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:35:48,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:48,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:35:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:48,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:35:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:48,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:35:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:48,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:35:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:48,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:35:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:48,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:35:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:48,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-14 14:35:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:48,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 14:35:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:48,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 14:35:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:48,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-14 14:35:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:48,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-14 14:35:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:48,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-14 14:35:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:48,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 14:35:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:48,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 14:35:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:48,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 14:35:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:48,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-14 14:35:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:48,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 14:35:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:48,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-14 14:35:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:48,774 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:35:48,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:35:48,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136536265] [2021-12-14 14:35:48,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136536265] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:35:48,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:35:48,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 14:35:48,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602965985] [2021-12-14 14:35:48,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:35:48,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 14:35:48,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:35:48,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 14:35:48,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 14:35:48,776 INFO L87 Difference]: Start difference. First operand 49906 states and 84007 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 14:35:52,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:35:52,141 INFO L93 Difference]: Finished difference Result 93010 states and 160167 transitions. [2021-12-14 14:35:52,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 14:35:52,141 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 168 [2021-12-14 14:35:52,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:35:52,444 INFO L225 Difference]: With dead ends: 93010 [2021-12-14 14:35:52,445 INFO L226 Difference]: Without dead ends: 92831 [2021-12-14 14:35:52,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:35:52,486 INFO L933 BasicCegarLoop]: 511 mSDtfsCounter, 925 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 14:35:52,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [941 Valid, 1069 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 14:35:52,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92831 states. [2021-12-14 14:35:56,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92831 to 92750. [2021-12-14 14:35:56,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92750 states, 77397 states have (on average 1.5839890435029782) internal successors, (122596), 77404 states have internal predecessors, (122596), 15325 states have call successors, (15325), 23 states have call predecessors, (15325), 27 states have return successors, (17516), 15324 states have call predecessors, (17516), 15324 states have call successors, (17516) [2021-12-14 14:35:56,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92750 states to 92750 states and 155437 transitions. [2021-12-14 14:35:56,704 INFO L78 Accepts]: Start accepts. Automaton has 92750 states and 155437 transitions. Word has length 168 [2021-12-14 14:35:56,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:35:56,704 INFO L470 AbstractCegarLoop]: Abstraction has 92750 states and 155437 transitions. [2021-12-14 14:35:56,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 14:35:56,704 INFO L276 IsEmpty]: Start isEmpty. Operand 92750 states and 155437 transitions. [2021-12-14 14:35:56,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-14 14:35:56,827 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:35:56,827 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:35:56,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-14 14:35:56,828 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:35:56,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:35:56,828 INFO L85 PathProgramCache]: Analyzing trace with hash -305648440, now seen corresponding path program 1 times [2021-12-14 14:35:56,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:35:56,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281131244] [2021-12-14 14:35:56,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:35:56,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:35:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:56,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:35:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:56,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:35:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:56,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:35:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:56,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:35:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:56,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:35:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:56,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:35:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:56,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 14:35:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:56,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 14:35:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:56,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 14:35:56,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:56,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 14:35:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:56,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 14:35:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:56,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-14 14:35:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:56,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-14 14:35:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:56,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-14 14:35:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:56,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 14:35:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:56,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-14 14:35:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:56,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-14 14:35:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:56,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-14 14:35:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:56,992 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-14 14:35:56,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:35:56,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281131244] [2021-12-14 14:35:56,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281131244] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:35:56,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135866106] [2021-12-14 14:35:56,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:35:56,993 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:35:56,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:35:57,008 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) [2021-12-14 14:35:57,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-14 14:35:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:35:57,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-14 14:35:57,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:35:57,554 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-14 14:35:57,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 14:35:57,983 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-14 14:35:57,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135866106] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 14:35:57,984 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 14:35:57,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 30 [2021-12-14 14:35:57,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94754987] [2021-12-14 14:35:57,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 14:35:57,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-14 14:35:57,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:35:57,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-14 14:35:57,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2021-12-14 14:35:57,986 INFO L87 Difference]: Start difference. First operand 92750 states and 155437 transitions. Second operand has 30 states, 29 states have (on average 9.068965517241379) internal successors, (263), 23 states have internal predecessors, (263), 9 states have call successors, (51), 11 states have call predecessors, (51), 11 states have return successors, (45), 11 states have call predecessors, (45), 9 states have call successors, (45)