./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec7_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/email_spec7_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 f29cc89d3ee64e709bcde3f8f1e5c1c29a2d05992b7eca470a9d177af894449a --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 17:17:52,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 17:17:52,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 17:17:52,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 17:17:52,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 17:17:52,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 17:17:52,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 17:17:52,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 17:17:52,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 17:17:52,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 17:17:52,914 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 17:17:52,916 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 17:17:52,916 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 17:17:52,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 17:17:52,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 17:17:52,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 17:17:52,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 17:17:52,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 17:17:52,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 17:17:52,925 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 17:17:52,928 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 17:17:52,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 17:17:52,930 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 17:17:52,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 17:17:52,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 17:17:52,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 17:17:52,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 17:17:52,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 17:17:52,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 17:17:52,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 17:17:52,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 17:17:52,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 17:17:52,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 17:17:52,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 17:17:52,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 17:17:52,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 17:17:52,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 17:17:52,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 17:17:52,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 17:17:52,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 17:17:52,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 17:17:52,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 17:17:52,944 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 17:17:52,969 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 17:17:52,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 17:17:52,970 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 17:17:52,970 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 17:17:52,971 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 17:17:52,971 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 17:17:52,971 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 17:17:52,971 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 17:17:52,971 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 17:17:52,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 17:17:52,972 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 17:17:52,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 17:17:52,973 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 17:17:52,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 17:17:52,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 17:17:52,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 17:17:52,973 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 17:17:52,973 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 17:17:52,973 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 17:17:52,974 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 17:17:52,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 17:17:52,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 17:17:52,974 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 17:17:52,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 17:17:52,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:17:52,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 17:17:52,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 17:17:52,975 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 17:17:52,975 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 17:17:52,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 17:17:52,975 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 17:17:52,975 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 17:17:52,976 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 17:17:52,976 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f29cc89d3ee64e709bcde3f8f1e5c1c29a2d05992b7eca470a9d177af894449a [2022-07-19 17:17:53,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 17:17:53,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 17:17:53,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 17:17:53,173 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 17:17:53,174 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 17:17:53,175 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec7_product28.cil.c [2022-07-19 17:17:53,213 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73fb03b48/b1ebda6628554cd9bd8f7831bb1048d7/FLAG23cd7dab7 [2022-07-19 17:17:53,667 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 17:17:53,667 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec7_product28.cil.c [2022-07-19 17:17:53,697 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73fb03b48/b1ebda6628554cd9bd8f7831bb1048d7/FLAG23cd7dab7 [2022-07-19 17:17:53,977 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73fb03b48/b1ebda6628554cd9bd8f7831bb1048d7 [2022-07-19 17:17:53,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 17:17:53,980 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 17:17:53,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 17:17:53,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 17:17:53,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 17:17:53,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:17:53" (1/1) ... [2022-07-19 17:17:53,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67a2e31d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:17:53, skipping insertion in model container [2022-07-19 17:17:53,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:17:53" (1/1) ... [2022-07-19 17:17:53,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 17:17:54,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 17:17:54,176 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec7_product28.cil.c[1542,1555] [2022-07-19 17:17:54,426 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:17:54,448 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 17:17:54,459 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec7_product28.cil.c[1542,1555] [2022-07-19 17:17:54,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:17:54,556 INFO L208 MainTranslator]: Completed translation [2022-07-19 17:17:54,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:17:54 WrapperNode [2022-07-19 17:17:54,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 17:17:54,557 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 17:17:54,557 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 17:17:54,558 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 17:17:54,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:17:54" (1/1) ... [2022-07-19 17:17:54,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:17:54" (1/1) ... [2022-07-19 17:17:54,641 INFO L137 Inliner]: procedures = 128, calls = 205, calls flagged for inlining = 55, calls inlined = 45, statements flattened = 839 [2022-07-19 17:17:54,641 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 17:17:54,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 17:17:54,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 17:17:54,647 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 17:17:54,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:17:54" (1/1) ... [2022-07-19 17:17:54,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:17:54" (1/1) ... [2022-07-19 17:17:54,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:17:54" (1/1) ... [2022-07-19 17:17:54,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:17:54" (1/1) ... [2022-07-19 17:17:54,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:17:54" (1/1) ... [2022-07-19 17:17:54,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:17:54" (1/1) ... [2022-07-19 17:17:54,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:17:54" (1/1) ... [2022-07-19 17:17:54,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 17:17:54,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 17:17:54,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 17:17:54,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 17:17:54,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:17:54" (1/1) ... [2022-07-19 17:17:54,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:17:54,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:17:54,784 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 17:17:54,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 17:17:54,809 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-07-19 17:17:54,810 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-07-19 17:17:54,810 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-07-19 17:17:54,810 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-07-19 17:17:54,810 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-07-19 17:17:54,810 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-07-19 17:17:54,810 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-07-19 17:17:54,811 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-07-19 17:17:54,811 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-07-19 17:17:54,811 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-07-19 17:17:54,811 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-07-19 17:17:54,811 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-07-19 17:17:54,811 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-07-19 17:17:54,811 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-07-19 17:17:54,811 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-07-19 17:17:54,812 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-07-19 17:17:54,812 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-07-19 17:17:54,812 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-07-19 17:17:54,812 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-07-19 17:17:54,812 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-07-19 17:17:54,812 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-07-19 17:17:54,812 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-07-19 17:17:54,812 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-07-19 17:17:54,813 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-07-19 17:17:54,813 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-07-19 17:17:54,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 17:17:54,813 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-07-19 17:17:54,813 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-07-19 17:17:54,813 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-07-19 17:17:54,813 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-07-19 17:17:54,813 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-07-19 17:17:54,814 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-07-19 17:17:54,814 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-07-19 17:17:54,814 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-07-19 17:17:54,814 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-07-19 17:17:54,814 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-07-19 17:17:54,814 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-07-19 17:17:54,815 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-07-19 17:17:54,815 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-07-19 17:17:54,815 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-07-19 17:17:54,815 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-07-19 17:17:54,815 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-07-19 17:17:54,815 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-07-19 17:17:54,816 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-07-19 17:17:54,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 17:17:54,816 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-07-19 17:17:54,816 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-07-19 17:17:54,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 17:17:54,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 17:17:54,972 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 17:17:54,973 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 17:17:55,542 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 17:17:55,550 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 17:17:55,550 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 17:17:55,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:17:55 BoogieIcfgContainer [2022-07-19 17:17:55,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 17:17:55,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 17:17:55,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 17:17:55,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 17:17:55,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 05:17:53" (1/3) ... [2022-07-19 17:17:55,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7617a293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:17:55, skipping insertion in model container [2022-07-19 17:17:55,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:17:54" (2/3) ... [2022-07-19 17:17:55,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7617a293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:17:55, skipping insertion in model container [2022-07-19 17:17:55,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:17:55" (3/3) ... [2022-07-19 17:17:55,560 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec7_product28.cil.c [2022-07-19 17:17:55,569 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 17:17:55,569 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 17:17:55,605 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 17:17:55,609 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2af9733b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5d077233 [2022-07-19 17:17:55,609 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 17:17:55,613 INFO L276 IsEmpty]: Start isEmpty. Operand has 324 states, 251 states have (on average 1.5219123505976095) internal successors, (382), 255 states have internal predecessors, (382), 49 states have call successors, (49), 22 states have call predecessors, (49), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-07-19 17:17:55,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-19 17:17:55,625 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:17:55,626 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:17:55,626 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:17:55,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:17:55,630 INFO L85 PathProgramCache]: Analyzing trace with hash 331182671, now seen corresponding path program 1 times [2022-07-19 17:17:55,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:17:55,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026886074] [2022-07-19 17:17:55,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:17:55,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:17:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:55,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:17:55,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:55,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:17:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:55,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:17:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:55,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 17:17:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:55,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 17:17:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:56,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 17:17:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:56,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 17:17:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:56,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 17:17:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:56,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 17:17:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:56,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 17:17:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:56,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 17:17:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:56,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 17:17:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:56,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 17:17:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:56,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 17:17:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:56,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:17:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:56,066 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:17:56,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:17:56,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026886074] [2022-07-19 17:17:56,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026886074] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:17:56,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783640204] [2022-07-19 17:17:56,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:17:56,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:17:56,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:17:56,082 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 17:17:56,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 17:17:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:56,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 1069 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-19 17:17:56,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:17:56,339 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-19 17:17:56,340 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:17:56,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783640204] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:17:56,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:17:56,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2022-07-19 17:17:56,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218744885] [2022-07-19 17:17:56,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:17:56,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 17:17:56,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:17:56,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 17:17:56,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:17:56,363 INFO L87 Difference]: Start difference. First operand has 324 states, 251 states have (on average 1.5219123505976095) internal successors, (382), 255 states have internal predecessors, (382), 49 states have call successors, (49), 22 states have call predecessors, (49), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 17:17:56,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:17:56,402 INFO L93 Difference]: Finished difference Result 499 states and 722 transitions. [2022-07-19 17:17:56,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 17:17:56,404 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 117 [2022-07-19 17:17:56,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:17:56,412 INFO L225 Difference]: With dead ends: 499 [2022-07-19 17:17:56,413 INFO L226 Difference]: Without dead ends: 317 [2022-07-19 17:17:56,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:17:56,418 INFO L413 NwaCegarLoop]: 476 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, 476 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:17:56,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:17:56,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-07-19 17:17:56,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2022-07-19 17:17:56,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 245 states have (on average 1.5142857142857142) internal successors, (371), 248 states have internal predecessors, (371), 49 states have call successors, (49), 22 states have call predecessors, (49), 22 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-07-19 17:17:56,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 468 transitions. [2022-07-19 17:17:56,463 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 468 transitions. Word has length 117 [2022-07-19 17:17:56,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:17:56,464 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 468 transitions. [2022-07-19 17:17:56,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 17:17:56,465 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 468 transitions. [2022-07-19 17:17:56,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-19 17:17:56,468 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:17:56,468 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:17:56,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 17:17:56,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-19 17:17:56,686 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:17:56,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:17:56,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1049878184, now seen corresponding path program 1 times [2022-07-19 17:17:56,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:17:56,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650230707] [2022-07-19 17:17:56,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:17:56,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:17:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:56,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:17:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:56,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:17:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:56,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:17:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:56,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 17:17:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:56,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 17:17:56,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:56,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 17:17:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:56,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 17:17:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:56,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 17:17:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:56,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 17:17:56,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:56,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 17:17:56,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:56,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 17:17:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:56,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 17:17:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:56,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 17:17:56,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:56,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 17:17:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:56,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:17:56,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:56,881 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:17:56,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:17:56,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650230707] [2022-07-19 17:17:56,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650230707] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:17:56,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529497009] [2022-07-19 17:17:56,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:17:56,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:17:56,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:17:56,890 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 17:17:56,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 17:17:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:57,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 1070 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 17:17:57,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:17:57,164 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-19 17:17:57,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:17:57,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529497009] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:17:57,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:17:57,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-19 17:17:57,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819716243] [2022-07-19 17:17:57,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:17:57,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:17:57,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:17:57,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:17:57,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:17:57,170 INFO L87 Difference]: Start difference. First operand 317 states and 468 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 17:17:57,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:17:57,206 INFO L93 Difference]: Finished difference Result 489 states and 703 transitions. [2022-07-19 17:17:57,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:17:57,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 118 [2022-07-19 17:17:57,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:17:57,210 INFO L225 Difference]: With dead ends: 489 [2022-07-19 17:17:57,210 INFO L226 Difference]: Without dead ends: 320 [2022-07-19 17:17:57,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:17:57,212 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 1 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:17:57,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 930 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:17:57,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-07-19 17:17:57,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 319. [2022-07-19 17:17:57,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 247 states have (on average 1.5101214574898785) internal successors, (373), 250 states have internal predecessors, (373), 49 states have call successors, (49), 22 states have call predecessors, (49), 22 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-07-19 17:17:57,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 470 transitions. [2022-07-19 17:17:57,229 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 470 transitions. Word has length 118 [2022-07-19 17:17:57,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:17:57,229 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 470 transitions. [2022-07-19 17:17:57,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 17:17:57,230 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 470 transitions. [2022-07-19 17:17:57,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 17:17:57,232 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:17:57,232 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:17:57,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 17:17:57,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-19 17:17:57,451 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:17:57,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:17:57,452 INFO L85 PathProgramCache]: Analyzing trace with hash -584714191, now seen corresponding path program 1 times [2022-07-19 17:17:57,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:17:57,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133185977] [2022-07-19 17:17:57,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:17:57,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:17:57,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:57,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:17:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:57,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:17:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:57,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:17:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:57,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 17:17:57,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:57,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 17:17:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:57,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 17:17:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:57,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 17:17:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:57,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 17:17:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:57,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 17:17:57,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:57,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 17:17:57,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:57,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 17:17:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:57,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 17:17:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:57,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 17:17:57,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:57,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-19 17:17:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:57,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:17:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:57,610 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-19 17:17:57,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:17:57,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133185977] [2022-07-19 17:17:57,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133185977] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:17:57,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324644005] [2022-07-19 17:17:57,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:17:57,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:17:57,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:17:57,627 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 17:17:57,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 17:17:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:57,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 17:17:57,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:17:57,864 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-19 17:17:57,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:17:57,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324644005] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:17:57,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:17:57,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-19 17:17:57,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824758550] [2022-07-19 17:17:57,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:17:57,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:17:57,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:17:57,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:17:57,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:17:57,876 INFO L87 Difference]: Start difference. First operand 319 states and 470 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 17:17:57,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:17:57,901 INFO L93 Difference]: Finished difference Result 663 states and 991 transitions. [2022-07-19 17:17:57,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:17:57,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 124 [2022-07-19 17:17:57,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:17:57,907 INFO L225 Difference]: With dead ends: 663 [2022-07-19 17:17:57,907 INFO L226 Difference]: Without dead ends: 371 [2022-07-19 17:17:57,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:17:57,912 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 99 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:17:57,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 912 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:17:57,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-07-19 17:17:57,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 363. [2022-07-19 17:17:57,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 280 states have (on average 1.525) internal successors, (427), 283 states have internal predecessors, (427), 60 states have call successors, (60), 22 states have call predecessors, (60), 22 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-07-19 17:17:57,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 546 transitions. [2022-07-19 17:17:57,958 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 546 transitions. Word has length 124 [2022-07-19 17:17:57,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:17:57,959 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 546 transitions. [2022-07-19 17:17:57,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 17:17:57,960 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 546 transitions. [2022-07-19 17:17:57,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-19 17:17:57,963 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:17:57,963 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:17:57,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 17:17:58,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:17:58,174 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:17:58,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:17:58,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1843508188, now seen corresponding path program 1 times [2022-07-19 17:17:58,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:17:58,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179854932] [2022-07-19 17:17:58,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:17:58,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:17:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:58,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:17:58,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:58,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:17:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:58,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:17:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:58,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 17:17:58,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:58,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 17:17:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:58,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 17:17:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:58,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-19 17:17:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:58,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 17:17:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:58,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 17:17:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:58,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 17:17:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:58,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 17:17:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:58,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 17:17:58,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:58,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 17:17:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:58,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 17:17:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:58,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:17:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:58,323 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-19 17:17:58,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:17:58,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179854932] [2022-07-19 17:17:58,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179854932] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:17:58,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636036921] [2022-07-19 17:17:58,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:17:58,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:17:58,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:17:58,328 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 17:17:58,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 17:17:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:58,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 17:17:58,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:17:58,591 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-19 17:17:58,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:17:58,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636036921] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:17:58,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:17:58,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-07-19 17:17:58,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996717940] [2022-07-19 17:17:58,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:17:58,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 17:17:58,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:17:58,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 17:17:58,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-19 17:17:58,594 INFO L87 Difference]: Start difference. First operand 363 states and 546 transitions. Second operand has 5 states, 4 states have (on average 20.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-19 17:17:58,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:17:58,666 INFO L93 Difference]: Finished difference Result 717 states and 1082 transitions. [2022-07-19 17:17:58,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 17:17:58,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 125 [2022-07-19 17:17:58,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:17:58,669 INFO L225 Difference]: With dead ends: 717 [2022-07-19 17:17:58,669 INFO L226 Difference]: Without dead ends: 365 [2022-07-19 17:17:58,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-19 17:17:58,674 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 117 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1699 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:17:58,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 1699 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:17:58,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-07-19 17:17:58,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2022-07-19 17:17:58,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 281 states have (on average 1.5231316725978647) internal successors, (428), 285 states have internal predecessors, (428), 60 states have call successors, (60), 22 states have call predecessors, (60), 23 states have return successors, (61), 59 states have call predecessors, (61), 59 states have call successors, (61) [2022-07-19 17:17:58,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 549 transitions. [2022-07-19 17:17:58,698 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 549 transitions. Word has length 125 [2022-07-19 17:17:58,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:17:58,698 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 549 transitions. [2022-07-19 17:17:58,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-19 17:17:58,699 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 549 transitions. [2022-07-19 17:17:58,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-19 17:17:58,702 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:17:58,702 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:17:58,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 17:17:58,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:17:58,915 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:17:58,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:17:58,915 INFO L85 PathProgramCache]: Analyzing trace with hash 490493493, now seen corresponding path program 1 times [2022-07-19 17:17:58,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:17:58,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655342291] [2022-07-19 17:17:58,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:17:58,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:17:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:58,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:17:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:58,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:17:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:58,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:17:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:58,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:17:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:59,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 17:17:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:59,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 17:17:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:59,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 17:17:59,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:59,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 17:17:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:59,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 17:17:59,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:59,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 17:17:59,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:59,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 17:17:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:59,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 17:17:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:59,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 17:17:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:59,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 17:17:59,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:59,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:17:59,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:59,041 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-19 17:17:59,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:17:59,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655342291] [2022-07-19 17:17:59,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655342291] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:17:59,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642295076] [2022-07-19 17:17:59,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:17:59,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:17:59,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:17:59,044 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 17:17:59,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 17:17:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:59,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 1092 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 17:17:59,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:17:59,290 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-19 17:17:59,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:17:59,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642295076] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:17:59,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:17:59,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-07-19 17:17:59,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999440257] [2022-07-19 17:17:59,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:17:59,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 17:17:59,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:17:59,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 17:17:59,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-19 17:17:59,293 INFO L87 Difference]: Start difference. First operand 365 states and 549 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-19 17:17:59,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:17:59,336 INFO L93 Difference]: Finished difference Result 719 states and 1087 transitions. [2022-07-19 17:17:59,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 17:17:59,336 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 126 [2022-07-19 17:17:59,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:17:59,338 INFO L225 Difference]: With dead ends: 719 [2022-07-19 17:17:59,338 INFO L226 Difference]: Without dead ends: 367 [2022-07-19 17:17:59,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-07-19 17:17:59,339 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 116 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:17:59,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1688 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:17:59,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-07-19 17:17:59,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2022-07-19 17:17:59,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 282 states have (on average 1.5212765957446808) internal successors, (429), 287 states have internal predecessors, (429), 60 states have call successors, (60), 22 states have call predecessors, (60), 24 states have return successors, (66), 59 states have call predecessors, (66), 59 states have call successors, (66) [2022-07-19 17:17:59,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 555 transitions. [2022-07-19 17:17:59,351 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 555 transitions. Word has length 126 [2022-07-19 17:17:59,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:17:59,352 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 555 transitions. [2022-07-19 17:17:59,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-19 17:17:59,352 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 555 transitions. [2022-07-19 17:17:59,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-19 17:17:59,353 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:17:59,353 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:17:59,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 17:17:59,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:17:59,571 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:17:59,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:17:59,571 INFO L85 PathProgramCache]: Analyzing trace with hash -214305394, now seen corresponding path program 1 times [2022-07-19 17:17:59,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:17:59,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851076714] [2022-07-19 17:17:59,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:17:59,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:17:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:59,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:17:59,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:59,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:17:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:59,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:17:59,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:59,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:17:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:59,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:17:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:59,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 17:17:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:59,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 17:17:59,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:59,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 17:17:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:59,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 17:17:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:59,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 17:17:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:59,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 17:17:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:59,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 17:17:59,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:59,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 17:17:59,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:59,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 17:17:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:59,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:17:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:17:59,652 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-19 17:17:59,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:17:59,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851076714] [2022-07-19 17:17:59,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851076714] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:17:59,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:17:59,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 17:17:59,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131768459] [2022-07-19 17:17:59,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:17:59,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 17:17:59,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:17:59,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 17:17:59,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:17:59,654 INFO L87 Difference]: Start difference. First operand 367 states and 555 transitions. Second operand has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-19 17:18:00,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:18:00,576 INFO L93 Difference]: Finished difference Result 779 states and 1184 transitions. [2022-07-19 17:18:00,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:18:00,577 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 127 [2022-07-19 17:18:00,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:18:00,579 INFO L225 Difference]: With dead ends: 779 [2022-07-19 17:18:00,579 INFO L226 Difference]: Without dead ends: 435 [2022-07-19 17:18:00,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-07-19 17:18:00,581 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 896 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 1453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:18:00,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 1135 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 1453 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 17:18:00,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-07-19 17:18:00,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 367. [2022-07-19 17:18:00,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 282 states have (on average 1.5212765957446808) internal successors, (429), 287 states have internal predecessors, (429), 60 states have call successors, (60), 22 states have call predecessors, (60), 24 states have return successors, (65), 59 states have call predecessors, (65), 59 states have call successors, (65) [2022-07-19 17:18:00,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 554 transitions. [2022-07-19 17:18:00,599 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 554 transitions. Word has length 127 [2022-07-19 17:18:00,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:18:00,599 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 554 transitions. [2022-07-19 17:18:00,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-19 17:18:00,599 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 554 transitions. [2022-07-19 17:18:00,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-19 17:18:00,601 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:18:00,601 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:18:00,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 17:18:00,601 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:18:00,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:18:00,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1524729219, now seen corresponding path program 2 times [2022-07-19 17:18:00,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:18:00,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623282207] [2022-07-19 17:18:00,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:18:00,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:18:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:00,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:18:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:00,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:18:00,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:00,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:18:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:00,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:18:00,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:00,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:18:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:00,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:18:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:00,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 17:18:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:00,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 17:18:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:00,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 17:18:00,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:00,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 17:18:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:00,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 17:18:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:00,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 17:18:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:00,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 17:18:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:00,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 17:18:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:00,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:18:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:00,686 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-19 17:18:00,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:18:00,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623282207] [2022-07-19 17:18:00,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623282207] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:18:00,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:18:00,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 17:18:00,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650604164] [2022-07-19 17:18:00,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:18:00,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 17:18:00,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:18:00,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 17:18:00,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:18:00,689 INFO L87 Difference]: Start difference. First operand 367 states and 554 transitions. Second operand has 8 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-19 17:18:01,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:18:01,599 INFO L93 Difference]: Finished difference Result 781 states and 1187 transitions. [2022-07-19 17:18:01,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:18:01,600 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 128 [2022-07-19 17:18:01,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:18:01,602 INFO L225 Difference]: With dead ends: 781 [2022-07-19 17:18:01,602 INFO L226 Difference]: Without dead ends: 437 [2022-07-19 17:18:01,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-07-19 17:18:01,603 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 872 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 1769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:18:01,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 1145 Invalid, 1769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 17:18:01,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-07-19 17:18:01,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 369. [2022-07-19 17:18:01,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 283 states have (on average 1.519434628975265) internal successors, (430), 289 states have internal predecessors, (430), 60 states have call successors, (60), 22 states have call predecessors, (60), 25 states have return successors, (67), 59 states have call predecessors, (67), 59 states have call successors, (67) [2022-07-19 17:18:01,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 557 transitions. [2022-07-19 17:18:01,619 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 557 transitions. Word has length 128 [2022-07-19 17:18:01,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:18:01,620 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 557 transitions. [2022-07-19 17:18:01,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-19 17:18:01,620 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 557 transitions. [2022-07-19 17:18:01,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-19 17:18:01,621 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:18:01,621 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:18:01,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 17:18:01,622 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:18:01,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:18:01,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1406967309, now seen corresponding path program 1 times [2022-07-19 17:18:01,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:18:01,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675819914] [2022-07-19 17:18:01,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:18:01,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:18:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:01,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:18:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:01,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:18:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:01,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:18:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:01,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:18:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:01,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:18:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:01,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:18:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:01,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 17:18:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:01,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 17:18:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:01,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 17:18:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:01,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 17:18:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:01,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 17:18:01,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:01,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 17:18:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:01,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-19 17:18:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:01,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-19 17:18:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:01,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:18:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:01,736 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-19 17:18:01,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:18:01,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675819914] [2022-07-19 17:18:01,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675819914] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:18:01,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:18:01,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 17:18:01,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751727804] [2022-07-19 17:18:01,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:18:01,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 17:18:01,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:18:01,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 17:18:01,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-19 17:18:01,738 INFO L87 Difference]: Start difference. First operand 369 states and 557 transitions. Second operand has 11 states, 10 states have (on average 8.3) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-19 17:18:03,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:18:03,068 INFO L93 Difference]: Finished difference Result 779 states and 1182 transitions. [2022-07-19 17:18:03,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 17:18:03,069 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.3) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 129 [2022-07-19 17:18:03,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:18:03,071 INFO L225 Difference]: With dead ends: 779 [2022-07-19 17:18:03,071 INFO L226 Difference]: Without dead ends: 437 [2022-07-19 17:18:03,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-07-19 17:18:03,072 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 982 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 2764 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 3083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 2764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 17:18:03,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [982 Valid, 1423 Invalid, 3083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 2764 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 17:18:03,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-07-19 17:18:03,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 369. [2022-07-19 17:18:03,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 283 states have (on average 1.519434628975265) internal successors, (430), 289 states have internal predecessors, (430), 60 states have call successors, (60), 22 states have call predecessors, (60), 25 states have return successors, (66), 59 states have call predecessors, (66), 59 states have call successors, (66) [2022-07-19 17:18:03,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 556 transitions. [2022-07-19 17:18:03,088 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 556 transitions. Word has length 129 [2022-07-19 17:18:03,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:18:03,088 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 556 transitions. [2022-07-19 17:18:03,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.3) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-19 17:18:03,089 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 556 transitions. [2022-07-19 17:18:03,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-19 17:18:03,090 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:18:03,090 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:18:03,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 17:18:03,091 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:18:03,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:18:03,091 INFO L85 PathProgramCache]: Analyzing trace with hash 954508734, now seen corresponding path program 2 times [2022-07-19 17:18:03,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:18:03,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241371458] [2022-07-19 17:18:03,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:18:03,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:18:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:03,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:18:03,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:03,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:18:03,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:03,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:18:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:03,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:18:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:03,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:18:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:03,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:18:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:03,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 17:18:03,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:03,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 17:18:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:03,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 17:18:03,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:03,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 17:18:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:03,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 17:18:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:03,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 17:18:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:03,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 17:18:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:03,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-19 17:18:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:03,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:18:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:03,187 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-19 17:18:03,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:18:03,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241371458] [2022-07-19 17:18:03,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241371458] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:18:03,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:18:03,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 17:18:03,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840087949] [2022-07-19 17:18:03,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:18:03,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 17:18:03,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:18:03,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 17:18:03,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-19 17:18:03,189 INFO L87 Difference]: Start difference. First operand 369 states and 556 transitions. Second operand has 11 states, 10 states have (on average 8.4) internal successors, (84), 8 states have internal predecessors, (84), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-19 17:18:04,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:18:04,490 INFO L93 Difference]: Finished difference Result 781 states and 1188 transitions. [2022-07-19 17:18:04,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 17:18:04,490 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.4) internal successors, (84), 8 states have internal predecessors, (84), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 130 [2022-07-19 17:18:04,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:18:04,492 INFO L225 Difference]: With dead ends: 781 [2022-07-19 17:18:04,492 INFO L226 Difference]: Without dead ends: 439 [2022-07-19 17:18:04,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-07-19 17:18:04,494 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 1006 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 2701 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1006 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 3017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 2701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:18:04,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1006 Valid, 1411 Invalid, 3017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 2701 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 17:18:04,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-07-19 17:18:04,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 371. [2022-07-19 17:18:04,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 284 states have (on average 1.517605633802817) internal successors, (431), 291 states have internal predecessors, (431), 60 states have call successors, (60), 22 states have call predecessors, (60), 26 states have return successors, (71), 59 states have call predecessors, (71), 59 states have call successors, (71) [2022-07-19 17:18:04,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 562 transitions. [2022-07-19 17:18:04,524 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 562 transitions. Word has length 130 [2022-07-19 17:18:04,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:18:04,540 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 562 transitions. [2022-07-19 17:18:04,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.4) internal successors, (84), 8 states have internal predecessors, (84), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-19 17:18:04,540 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 562 transitions. [2022-07-19 17:18:04,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-19 17:18:04,541 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:18:04,541 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:18:04,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 17:18:04,542 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:18:04,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:18:04,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1241338906, now seen corresponding path program 1 times [2022-07-19 17:18:04,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:18:04,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961849658] [2022-07-19 17:18:04,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:18:04,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:18:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:04,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:18:04,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:04,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:18:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:04,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:18:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:04,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:18:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:04,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:18:04,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:04,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:18:04,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:04,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 17:18:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:04,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 17:18:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:04,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 17:18:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:04,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 17:18:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:04,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 17:18:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:04,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 17:18:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:04,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 17:18:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:04,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 17:18:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:04,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:18:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:04,644 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-19 17:18:04,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:18:04,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961849658] [2022-07-19 17:18:04,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961849658] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:18:04,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:18:04,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 17:18:04,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080263390] [2022-07-19 17:18:04,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:18:04,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 17:18:04,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:18:04,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 17:18:04,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:18:04,645 INFO L87 Difference]: Start difference. First operand 371 states and 562 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-19 17:18:05,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:18:05,599 INFO L93 Difference]: Finished difference Result 783 states and 1191 transitions. [2022-07-19 17:18:05,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 17:18:05,600 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 131 [2022-07-19 17:18:05,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:18:05,602 INFO L225 Difference]: With dead ends: 783 [2022-07-19 17:18:05,602 INFO L226 Difference]: Without dead ends: 439 [2022-07-19 17:18:05,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:18:05,603 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 863 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:18:05,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 1146 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 17:18:05,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-07-19 17:18:05,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 371. [2022-07-19 17:18:05,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 284 states have (on average 1.517605633802817) internal successors, (431), 291 states have internal predecessors, (431), 60 states have call successors, (60), 22 states have call predecessors, (60), 26 states have return successors, (71), 59 states have call predecessors, (71), 59 states have call successors, (71) [2022-07-19 17:18:05,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 562 transitions. [2022-07-19 17:18:05,620 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 562 transitions. Word has length 131 [2022-07-19 17:18:05,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:18:05,620 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 562 transitions. [2022-07-19 17:18:05,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-19 17:18:05,621 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 562 transitions. [2022-07-19 17:18:05,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-19 17:18:05,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:18:05,622 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:18:05,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 17:18:05,622 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:18:05,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:18:05,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1827615128, now seen corresponding path program 1 times [2022-07-19 17:18:05,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:18:05,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904687603] [2022-07-19 17:18:05,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:18:05,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:18:05,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:05,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:18:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:05,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:18:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:05,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:18:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:05,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:18:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:05,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:18:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:05,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:18:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:05,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 17:18:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:05,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 17:18:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:05,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 17:18:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:05,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 17:18:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:05,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 17:18:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:05,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 17:18:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:05,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 17:18:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:05,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 17:18:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:05,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:18:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:05,692 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 17:18:05,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:18:05,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904687603] [2022-07-19 17:18:05,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904687603] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:18:05,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531120410] [2022-07-19 17:18:05,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:18:05,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:18:05,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:18:05,694 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 17:18:05,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 17:18:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:05,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 17:18:05,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:18:05,943 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 17:18:05,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 17:18:06,007 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 17:18:06,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531120410] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 17:18:06,008 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 17:18:06,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2022-07-19 17:18:06,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053273244] [2022-07-19 17:18:06,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 17:18:06,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 17:18:06,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:18:06,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 17:18:06,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:18:06,011 INFO L87 Difference]: Start difference. First operand 371 states and 562 transitions. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 7 states have internal predecessors, (117), 2 states have call successors, (34), 5 states have call predecessors, (34), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-19 17:18:07,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:18:07,175 INFO L93 Difference]: Finished difference Result 935 states and 1485 transitions. [2022-07-19 17:18:07,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 17:18:07,176 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 7 states have internal predecessors, (117), 2 states have call successors, (34), 5 states have call predecessors, (34), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 131 [2022-07-19 17:18:07,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:18:07,180 INFO L225 Difference]: With dead ends: 935 [2022-07-19 17:18:07,180 INFO L226 Difference]: Without dead ends: 766 [2022-07-19 17:18:07,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-07-19 17:18:07,182 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 1123 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:18:07,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1168 Valid, 1500 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 17:18:07,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-07-19 17:18:07,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 674. [2022-07-19 17:18:07,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 523 states have (on average 1.5850860420650095) internal successors, (829), 530 states have internal predecessors, (829), 124 states have call successors, (124), 22 states have call predecessors, (124), 26 states have return successors, (145), 123 states have call predecessors, (145), 123 states have call successors, (145) [2022-07-19 17:18:07,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1098 transitions. [2022-07-19 17:18:07,237 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1098 transitions. Word has length 131 [2022-07-19 17:18:07,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:18:07,238 INFO L495 AbstractCegarLoop]: Abstraction has 674 states and 1098 transitions. [2022-07-19 17:18:07,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 7 states have internal predecessors, (117), 2 states have call successors, (34), 5 states have call predecessors, (34), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-19 17:18:07,238 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1098 transitions. [2022-07-19 17:18:07,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-19 17:18:07,241 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:18:07,241 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:18:07,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 17:18:07,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:18:07,456 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:18:07,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:18:07,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1753103115, now seen corresponding path program 1 times [2022-07-19 17:18:07,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:18:07,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921367410] [2022-07-19 17:18:07,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:18:07,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:18:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:07,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:18:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:07,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:18:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:07,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:18:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:07,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:18:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:07,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:18:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:07,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:18:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:07,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 17:18:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:07,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 17:18:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:07,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 17:18:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:07,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 17:18:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:07,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 17:18:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:07,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 17:18:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:07,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-19 17:18:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:07,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 17:18:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:07,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:18:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:07,527 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 17:18:07,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:18:07,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921367410] [2022-07-19 17:18:07,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921367410] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:18:07,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:18:07,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:18:07,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662927715] [2022-07-19 17:18:07,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:18:07,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:18:07,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:18:07,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:18:07,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:18:07,529 INFO L87 Difference]: Start difference. First operand 674 states and 1098 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 17:18:08,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:18:08,273 INFO L93 Difference]: Finished difference Result 1656 states and 2764 transitions. [2022-07-19 17:18:08,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 17:18:08,273 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 137 [2022-07-19 17:18:08,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:18:08,278 INFO L225 Difference]: With dead ends: 1656 [2022-07-19 17:18:08,278 INFO L226 Difference]: Without dead ends: 1050 [2022-07-19 17:18:08,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:18:08,280 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 903 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 17:18:08,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 1029 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 17:18:08,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2022-07-19 17:18:08,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 974. [2022-07-19 17:18:08,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 759 states have (on average 1.5994729907773386) internal successors, (1214), 766 states have internal predecessors, (1214), 188 states have call successors, (188), 22 states have call predecessors, (188), 26 states have return successors, (219), 187 states have call predecessors, (219), 187 states have call successors, (219) [2022-07-19 17:18:08,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1621 transitions. [2022-07-19 17:18:08,354 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1621 transitions. Word has length 137 [2022-07-19 17:18:08,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:18:08,354 INFO L495 AbstractCegarLoop]: Abstraction has 974 states and 1621 transitions. [2022-07-19 17:18:08,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 17:18:08,354 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1621 transitions. [2022-07-19 17:18:08,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-19 17:18:08,358 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:18:08,359 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:18:08,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 17:18:08,360 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:18:08,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:18:08,360 INFO L85 PathProgramCache]: Analyzing trace with hash 960373373, now seen corresponding path program 1 times [2022-07-19 17:18:08,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:18:08,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761679372] [2022-07-19 17:18:08,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:18:08,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:18:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:08,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:18:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:08,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:18:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:08,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:18:08,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:08,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:18:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:08,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:18:08,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:08,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:18:08,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:08,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 17:18:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:08,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 17:18:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:08,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 17:18:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:08,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 17:18:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:08,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 17:18:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:08,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-19 17:18:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:08,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-19 17:18:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:08,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-19 17:18:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:08,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:18:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:08,463 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 17:18:08,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:18:08,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761679372] [2022-07-19 17:18:08,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761679372] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:18:08,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:18:08,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:18:08,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905738491] [2022-07-19 17:18:08,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:18:08,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:18:08,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:18:08,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:18:08,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:18:08,465 INFO L87 Difference]: Start difference. First operand 974 states and 1621 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 17:18:09,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:18:09,186 INFO L93 Difference]: Finished difference Result 2371 states and 4009 transitions. [2022-07-19 17:18:09,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 17:18:09,186 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2022-07-19 17:18:09,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:18:09,192 INFO L225 Difference]: With dead ends: 2371 [2022-07-19 17:18:09,192 INFO L226 Difference]: Without dead ends: 1518 [2022-07-19 17:18:09,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:18:09,195 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 897 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:18:09,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 984 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 17:18:09,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2022-07-19 17:18:09,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1442. [2022-07-19 17:18:09,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1442 states, 1132 states have (on average 1.6086572438162545) internal successors, (1821), 1139 states have internal predecessors, (1821), 283 states have call successors, (283), 22 states have call predecessors, (283), 26 states have return successors, (314), 282 states have call predecessors, (314), 282 states have call successors, (314) [2022-07-19 17:18:09,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 2418 transitions. [2022-07-19 17:18:09,255 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 2418 transitions. Word has length 138 [2022-07-19 17:18:09,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:18:09,255 INFO L495 AbstractCegarLoop]: Abstraction has 1442 states and 2418 transitions. [2022-07-19 17:18:09,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 17:18:09,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 2418 transitions. [2022-07-19 17:18:09,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-19 17:18:09,262 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:18:09,263 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:18:09,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 17:18:09,263 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:18:09,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:18:09,263 INFO L85 PathProgramCache]: Analyzing trace with hash 391585495, now seen corresponding path program 1 times [2022-07-19 17:18:09,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:18:09,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003611283] [2022-07-19 17:18:09,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:18:09,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:18:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:09,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:18:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:09,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:18:09,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:09,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:18:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:09,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:18:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:09,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:18:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:09,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:18:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:09,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 17:18:09,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:09,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 17:18:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:09,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 17:18:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:09,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 17:18:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:09,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 17:18:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:09,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 17:18:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:09,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 17:18:09,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:09,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 17:18:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:09,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:18:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:09,323 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 17:18:09,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:18:09,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003611283] [2022-07-19 17:18:09,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003611283] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:18:09,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:18:09,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:18:09,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807621966] [2022-07-19 17:18:09,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:18:09,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:18:09,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:18:09,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:18:09,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:18:09,324 INFO L87 Difference]: Start difference. First operand 1442 states and 2418 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 17:18:09,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:18:09,999 INFO L93 Difference]: Finished difference Result 3418 states and 5850 transitions. [2022-07-19 17:18:10,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 17:18:10,000 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 139 [2022-07-19 17:18:10,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:18:10,011 INFO L225 Difference]: With dead ends: 3418 [2022-07-19 17:18:10,011 INFO L226 Difference]: Without dead ends: 2222 [2022-07-19 17:18:10,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:18:10,016 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 889 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:18:10,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 1006 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 17:18:10,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2022-07-19 17:18:10,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 2146. [2022-07-19 17:18:10,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2146 states, 1713 states have (on average 1.6158785755983653) internal successors, (2768), 1720 states have internal predecessors, (2768), 406 states have call successors, (406), 22 states have call predecessors, (406), 26 states have return successors, (453), 405 states have call predecessors, (453), 405 states have call successors, (453) [2022-07-19 17:18:10,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2146 states to 2146 states and 3627 transitions. [2022-07-19 17:18:10,108 INFO L78 Accepts]: Start accepts. Automaton has 2146 states and 3627 transitions. Word has length 139 [2022-07-19 17:18:10,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:18:10,108 INFO L495 AbstractCegarLoop]: Abstraction has 2146 states and 3627 transitions. [2022-07-19 17:18:10,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 17:18:10,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2146 states and 3627 transitions. [2022-07-19 17:18:10,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-19 17:18:10,116 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:18:10,116 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:18:10,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 17:18:10,117 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:18:10,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:18:10,117 INFO L85 PathProgramCache]: Analyzing trace with hash -736236066, now seen corresponding path program 1 times [2022-07-19 17:18:10,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:18:10,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971481649] [2022-07-19 17:18:10,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:18:10,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:18:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:10,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:18:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:10,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:18:10,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:10,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:18:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:10,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:18:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:10,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:18:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:10,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:18:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:10,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 17:18:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:10,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 17:18:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:10,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 17:18:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:10,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 17:18:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:10,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 17:18:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:10,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 17:18:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:10,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-19 17:18:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:10,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 17:18:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:10,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:18:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:10,208 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 17:18:10,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:18:10,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971481649] [2022-07-19 17:18:10,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971481649] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:18:10,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:18:10,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:18:10,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858313344] [2022-07-19 17:18:10,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:18:10,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:18:10,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:18:10,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:18:10,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:18:10,210 INFO L87 Difference]: Start difference. First operand 2146 states and 3627 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 17:18:10,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:18:10,967 INFO L93 Difference]: Finished difference Result 5037 states and 8704 transitions. [2022-07-19 17:18:10,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 17:18:10,968 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 140 [2022-07-19 17:18:10,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:18:11,000 INFO L225 Difference]: With dead ends: 5037 [2022-07-19 17:18:11,000 INFO L226 Difference]: Without dead ends: 3341 [2022-07-19 17:18:11,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:18:11,006 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 855 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:18:11,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 1019 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 17:18:11,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3341 states. [2022-07-19 17:18:11,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3341 to 3265. [2022-07-19 17:18:11,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3265 states, 2653 states have (on average 1.6204297022238974) internal successors, (4299), 2660 states have internal predecessors, (4299), 585 states have call successors, (585), 22 states have call predecessors, (585), 26 states have return successors, (658), 584 states have call predecessors, (658), 584 states have call successors, (658) [2022-07-19 17:18:11,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3265 states to 3265 states and 5542 transitions. [2022-07-19 17:18:11,129 INFO L78 Accepts]: Start accepts. Automaton has 3265 states and 5542 transitions. Word has length 140 [2022-07-19 17:18:11,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:18:11,129 INFO L495 AbstractCegarLoop]: Abstraction has 3265 states and 5542 transitions. [2022-07-19 17:18:11,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 17:18:11,129 INFO L276 IsEmpty]: Start isEmpty. Operand 3265 states and 5542 transitions. [2022-07-19 17:18:11,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-19 17:18:11,139 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:18:11,140 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:18:11,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 17:18:11,140 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:18:11,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:18:11,140 INFO L85 PathProgramCache]: Analyzing trace with hash -950274605, now seen corresponding path program 1 times [2022-07-19 17:18:11,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:18:11,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60476210] [2022-07-19 17:18:11,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:18:11,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:18:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:11,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:18:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:11,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:18:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:11,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:18:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:11,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:18:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:11,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:18:11,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:11,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:18:11,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:11,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 17:18:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:11,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 17:18:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:11,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 17:18:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:11,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 17:18:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:11,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-19 17:18:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:11,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 17:18:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:11,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 17:18:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:11,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-19 17:18:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:11,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:18:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:11,211 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 17:18:11,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:18:11,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60476210] [2022-07-19 17:18:11,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60476210] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:18:11,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:18:11,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:18:11,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466090806] [2022-07-19 17:18:11,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:18:11,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:18:11,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:18:11,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:18:11,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:18:11,213 INFO L87 Difference]: Start difference. First operand 3265 states and 5542 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 17:18:12,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:18:12,095 INFO L93 Difference]: Finished difference Result 7955 states and 13803 transitions. [2022-07-19 17:18:12,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 17:18:12,095 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 141 [2022-07-19 17:18:12,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:18:12,118 INFO L225 Difference]: With dead ends: 7955 [2022-07-19 17:18:12,118 INFO L226 Difference]: Without dead ends: 5372 [2022-07-19 17:18:12,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:18:12,126 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 891 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:18:12,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [906 Valid, 1015 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 17:18:12,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5372 states. [2022-07-19 17:18:12,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5372 to 5296. [2022-07-19 17:18:12,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5296 states, 4308 states have (on average 1.6135097493036212) internal successors, (6951), 4315 states have internal predecessors, (6951), 961 states have call successors, (961), 22 states have call predecessors, (961), 26 states have return successors, (1078), 960 states have call predecessors, (1078), 960 states have call successors, (1078) [2022-07-19 17:18:12,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5296 states to 5296 states and 8990 transitions. [2022-07-19 17:18:12,388 INFO L78 Accepts]: Start accepts. Automaton has 5296 states and 8990 transitions. Word has length 141 [2022-07-19 17:18:12,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:18:12,388 INFO L495 AbstractCegarLoop]: Abstraction has 5296 states and 8990 transitions. [2022-07-19 17:18:12,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 17:18:12,389 INFO L276 IsEmpty]: Start isEmpty. Operand 5296 states and 8990 transitions. [2022-07-19 17:18:12,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-19 17:18:12,441 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:18:12,441 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:18:12,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 17:18:12,441 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:18:12,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:18:12,442 INFO L85 PathProgramCache]: Analyzing trace with hash 2125382370, now seen corresponding path program 1 times [2022-07-19 17:18:12,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:18:12,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353398107] [2022-07-19 17:18:12,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:18:12,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:18:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:12,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:18:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:12,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:18:12,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:12,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:18:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:12,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:18:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:12,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:18:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:12,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:18:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:12,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 17:18:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:12,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 17:18:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:12,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 17:18:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:12,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 17:18:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:12,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 17:18:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:12,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 17:18:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:12,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 17:18:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:12,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-19 17:18:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:12,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:18:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:12,501 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 17:18:12,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:18:12,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353398107] [2022-07-19 17:18:12,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353398107] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:18:12,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:18:12,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:18:12,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046359979] [2022-07-19 17:18:12,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:18:12,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:18:12,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:18:12,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:18:12,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:18:12,503 INFO L87 Difference]: Start difference. First operand 5296 states and 8990 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 17:18:13,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:18:13,395 INFO L93 Difference]: Finished difference Result 13097 states and 22712 transitions. [2022-07-19 17:18:13,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 17:18:13,396 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 142 [2022-07-19 17:18:13,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:18:13,439 INFO L225 Difference]: With dead ends: 13097 [2022-07-19 17:18:13,440 INFO L226 Difference]: Without dead ends: 8860 [2022-07-19 17:18:13,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:18:13,454 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 891 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:18:13,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [906 Valid, 985 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 17:18:13,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8860 states. [2022-07-19 17:18:13,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8860 to 8784. [2022-07-19 17:18:13,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8784 states, 7190 states have (on average 1.6112656467315716) internal successors, (11585), 7197 states have internal predecessors, (11585), 1567 states have call successors, (1567), 22 states have call predecessors, (1567), 26 states have return successors, (1762), 1566 states have call predecessors, (1762), 1566 states have call successors, (1762) [2022-07-19 17:18:13,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8784 states to 8784 states and 14914 transitions. [2022-07-19 17:18:13,908 INFO L78 Accepts]: Start accepts. Automaton has 8784 states and 14914 transitions. Word has length 142 [2022-07-19 17:18:13,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:18:13,908 INFO L495 AbstractCegarLoop]: Abstraction has 8784 states and 14914 transitions. [2022-07-19 17:18:13,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 17:18:13,908 INFO L276 IsEmpty]: Start isEmpty. Operand 8784 states and 14914 transitions. [2022-07-19 17:18:13,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-19 17:18:13,933 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:18:13,933 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:18:13,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 17:18:13,933 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:18:13,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:18:13,934 INFO L85 PathProgramCache]: Analyzing trace with hash -2006253163, now seen corresponding path program 1 times [2022-07-19 17:18:13,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:18:13,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771908763] [2022-07-19 17:18:13,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:18:13,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:18:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:13,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:18:13,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:13,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:18:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:13,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:18:13,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:13,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:18:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:13,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:18:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:13,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:18:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:13,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 17:18:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:13,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 17:18:13,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:13,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 17:18:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:13,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 17:18:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:13,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 17:18:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:13,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-19 17:18:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:13,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-19 17:18:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:13,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-19 17:18:13,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:13,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:18:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:13,999 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 17:18:13,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:18:13,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771908763] [2022-07-19 17:18:13,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771908763] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:18:13,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:18:14,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:18:14,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150987424] [2022-07-19 17:18:14,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:18:14,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:18:14,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:18:14,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:18:14,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:18:14,002 INFO L87 Difference]: Start difference. First operand 8784 states and 14914 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 17:18:15,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:18:15,167 INFO L93 Difference]: Finished difference Result 22756 states and 39418 transitions. [2022-07-19 17:18:15,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 17:18:15,168 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 143 [2022-07-19 17:18:15,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:18:15,222 INFO L225 Difference]: With dead ends: 22756 [2022-07-19 17:18:15,223 INFO L226 Difference]: Without dead ends: 15453 [2022-07-19 17:18:15,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:18:15,249 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 865 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 17:18:15,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 1033 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 17:18:15,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15453 states. [2022-07-19 17:18:15,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15453 to 15377. [2022-07-19 17:18:15,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15377 states, 12580 states have (on average 1.6018282988871224) internal successors, (20151), 12587 states have internal predecessors, (20151), 2770 states have call successors, (2770), 22 states have call predecessors, (2770), 26 states have return successors, (3109), 2769 states have call predecessors, (3109), 2769 states have call successors, (3109) [2022-07-19 17:18:16,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15377 states to 15377 states and 26030 transitions. [2022-07-19 17:18:16,003 INFO L78 Accepts]: Start accepts. Automaton has 15377 states and 26030 transitions. Word has length 143 [2022-07-19 17:18:16,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:18:16,003 INFO L495 AbstractCegarLoop]: Abstraction has 15377 states and 26030 transitions. [2022-07-19 17:18:16,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 17:18:16,003 INFO L276 IsEmpty]: Start isEmpty. Operand 15377 states and 26030 transitions. [2022-07-19 17:18:16,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-19 17:18:16,037 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:18:16,037 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:18:16,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 17:18:16,037 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:18:16,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:18:16,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1315565085, now seen corresponding path program 1 times [2022-07-19 17:18:16,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:18:16,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258651411] [2022-07-19 17:18:16,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:18:16,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:18:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:16,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:18:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:16,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:18:16,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:16,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:18:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:16,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:18:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:16,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:18:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:16,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:18:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:16,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 17:18:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:16,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 17:18:16,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:16,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 17:18:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:16,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 17:18:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:16,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-19 17:18:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:16,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-19 17:18:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:16,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 17:18:16,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:16,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-19 17:18:16,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:16,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:18:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:16,107 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 17:18:16,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:18:16,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258651411] [2022-07-19 17:18:16,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258651411] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:18:16,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:18:16,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:18:16,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901325825] [2022-07-19 17:18:16,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:18:16,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:18:16,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:18:16,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:18:16,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:18:16,110 INFO L87 Difference]: Start difference. First operand 15377 states and 26030 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 17:18:17,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:18:17,782 INFO L93 Difference]: Finished difference Result 40712 states and 70401 transitions. [2022-07-19 17:18:17,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 17:18:17,782 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 144 [2022-07-19 17:18:17,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:18:17,876 INFO L225 Difference]: With dead ends: 40712 [2022-07-19 17:18:17,876 INFO L226 Difference]: Without dead ends: 27423 [2022-07-19 17:18:17,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:18:17,912 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 897 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 17:18:17,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 975 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 17:18:17,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27423 states. [2022-07-19 17:18:19,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27423 to 27347. [2022-07-19 17:18:19,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27347 states, 22511 states have (on average 1.5973968282173159) internal successors, (35959), 22518 states have internal predecessors, (35959), 4809 states have call successors, (4809), 22 states have call predecessors, (4809), 26 states have return successors, (5422), 4808 states have call predecessors, (5422), 4808 states have call successors, (5422) [2022-07-19 17:18:19,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27347 states to 27347 states and 46190 transitions. [2022-07-19 17:18:19,198 INFO L78 Accepts]: Start accepts. Automaton has 27347 states and 46190 transitions. Word has length 144 [2022-07-19 17:18:19,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:18:19,199 INFO L495 AbstractCegarLoop]: Abstraction has 27347 states and 46190 transitions. [2022-07-19 17:18:19,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 17:18:19,199 INFO L276 IsEmpty]: Start isEmpty. Operand 27347 states and 46190 transitions. [2022-07-19 17:18:19,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-19 17:18:19,237 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:18:19,237 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:18:19,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 17:18:19,238 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:18:19,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:18:19,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1254652489, now seen corresponding path program 1 times [2022-07-19 17:18:19,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:18:19,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628084215] [2022-07-19 17:18:19,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:18:19,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:18:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:19,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:18:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:19,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:18:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:19,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:18:19,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:19,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:18:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:19,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:18:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:19,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:18:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:19,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 17:18:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:19,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 17:18:19,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:19,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 17:18:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:19,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 17:18:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:19,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 17:18:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:19,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 17:18:19,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:19,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 17:18:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:19,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 17:18:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:19,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:18:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:19,315 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 17:18:19,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:18:19,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628084215] [2022-07-19 17:18:19,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628084215] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:18:19,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:18:19,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:18:19,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693286429] [2022-07-19 17:18:19,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:18:19,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:18:19,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:18:19,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:18:19,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:18:19,318 INFO L87 Difference]: Start difference. First operand 27347 states and 46190 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 17:18:21,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:18:21,923 INFO L93 Difference]: Finished difference Result 74499 states and 128000 transitions. [2022-07-19 17:18:21,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 17:18:21,924 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 145 [2022-07-19 17:18:21,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:18:22,118 INFO L225 Difference]: With dead ends: 74499 [2022-07-19 17:18:22,118 INFO L226 Difference]: Without dead ends: 49972 [2022-07-19 17:18:22,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:18:22,364 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 867 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:18:22,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 1001 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 17:18:22,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49972 states. [2022-07-19 17:18:24,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49972 to 49896. [2022-07-19 17:18:24,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49896 states, 41345 states have (on average 1.5914862740355544) internal successors, (65800), 41352 states have internal predecessors, (65800), 8524 states have call successors, (8524), 22 states have call predecessors, (8524), 26 states have return successors, (9669), 8523 states have call predecessors, (9669), 8523 states have call successors, (9669) [2022-07-19 17:18:24,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49896 states to 49896 states and 83993 transitions. [2022-07-19 17:18:24,626 INFO L78 Accepts]: Start accepts. Automaton has 49896 states and 83993 transitions. Word has length 145 [2022-07-19 17:18:24,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:18:24,626 INFO L495 AbstractCegarLoop]: Abstraction has 49896 states and 83993 transitions. [2022-07-19 17:18:24,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 17:18:24,627 INFO L276 IsEmpty]: Start isEmpty. Operand 49896 states and 83993 transitions. [2022-07-19 17:18:24,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-19 17:18:24,681 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:18:24,682 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:18:24,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 17:18:24,682 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:18:24,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:18:24,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1634548419, now seen corresponding path program 1 times [2022-07-19 17:18:24,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:18:24,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899518261] [2022-07-19 17:18:24,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:18:24,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:18:24,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:24,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:18:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:24,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:18:24,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:24,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:18:24,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:24,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:18:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:24,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:18:24,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:24,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:18:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:24,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 17:18:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:24,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 17:18:24,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:24,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 17:18:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:24,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 17:18:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:24,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 17:18:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:24,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-19 17:18:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:24,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-19 17:18:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:24,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 17:18:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:24,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:18:24,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:24,746 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 17:18:24,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:18:24,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899518261] [2022-07-19 17:18:24,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899518261] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:18:24,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:18:24,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:18:24,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382284530] [2022-07-19 17:18:24,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:18:24,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:18:24,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:18:24,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:18:24,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:18:24,748 INFO L87 Difference]: Start difference. First operand 49896 states and 83993 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 17:18:28,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:18:28,239 INFO L93 Difference]: Finished difference Result 92985 states and 160131 transitions. [2022-07-19 17:18:28,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 17:18:28,239 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 146 [2022-07-19 17:18:28,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:18:28,726 INFO L225 Difference]: With dead ends: 92985 [2022-07-19 17:18:28,727 INFO L226 Difference]: Without dead ends: 92816 [2022-07-19 17:18:28,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:18:28,760 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 891 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:18:28,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [906 Valid, 999 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 17:18:28,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92816 states. [2022-07-19 17:18:32,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92816 to 92740. [2022-07-19 17:18:32,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92740 states, 77390 states have (on average 1.5840031011758624) internal successors, (122586), 77397 states have internal predecessors, (122586), 15323 states have call successors, (15323), 22 states have call predecessors, (15323), 26 states have return successors, (17514), 15322 states have call predecessors, (17514), 15322 states have call successors, (17514) [2022-07-19 17:18:32,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92740 states to 92740 states and 155423 transitions. [2022-07-19 17:18:32,979 INFO L78 Accepts]: Start accepts. Automaton has 92740 states and 155423 transitions. Word has length 146 [2022-07-19 17:18:32,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:18:32,979 INFO L495 AbstractCegarLoop]: Abstraction has 92740 states and 155423 transitions. [2022-07-19 17:18:32,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 17:18:32,980 INFO L276 IsEmpty]: Start isEmpty. Operand 92740 states and 155423 transitions. [2022-07-19 17:18:33,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-19 17:18:33,037 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:18:33,038 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:18:33,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 17:18:33,038 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:18:33,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:18:33,038 INFO L85 PathProgramCache]: Analyzing trace with hash 761092662, now seen corresponding path program 1 times [2022-07-19 17:18:33,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:18:33,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628644397] [2022-07-19 17:18:33,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:18:33,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:18:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:33,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:18:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:33,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:18:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:33,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:18:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:33,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:18:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:33,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:18:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:33,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:18:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:33,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 17:18:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:33,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 17:18:33,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:33,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 17:18:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:33,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 17:18:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:33,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 17:18:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:33,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 17:18:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:33,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 17:18:33,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:33,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-19 17:18:33,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:33,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:18:33,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:33,190 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-19 17:18:33,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:18:33,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628644397] [2022-07-19 17:18:33,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628644397] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:18:33,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500472309] [2022-07-19 17:18:33,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:18:33,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:18:33,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:18:33,192 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 17:18:33,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 17:18:33,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:18:33,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 1166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-19 17:18:33,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:18:33,634 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-19 17:18:33,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 17:18:33,903 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-19 17:18:33,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500472309] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 17:18:33,903 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 17:18:33,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 30 [2022-07-19 17:18:33,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257635559] [2022-07-19 17:18:33,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 17:18:33,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-19 17:18:33,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:18:33,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-19 17:18:33,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-07-19 17:18:33,905 INFO L87 Difference]: Start difference. First operand 92740 states and 155423 transitions. Second operand has 30 states, 29 states have (on average 8.448275862068966) internal successors, (245), 23 states have internal predecessors, (245), 9 states have call successors, (45), 11 states have call predecessors, (45), 11 states have return successors, (39), 11 states have call predecessors, (39), 9 states have call successors, (39) [2022-07-19 17:19:01,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:19:01,111 INFO L93 Difference]: Finished difference Result 370812 states and 653918 transitions. [2022-07-19 17:19:01,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-07-19 17:19:01,113 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 8.448275862068966) internal successors, (245), 23 states have internal predecessors, (245), 9 states have call successors, (45), 11 states have call predecessors, (45), 11 states have return successors, (39), 11 states have call predecessors, (39), 9 states have call successors, (39) Word has length 147 [2022-07-19 17:19:01,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:19:03,339 INFO L225 Difference]: With dead ends: 370812 [2022-07-19 17:19:03,340 INFO L226 Difference]: Without dead ends: 370649 [2022-07-19 17:19:03,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6061 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2711, Invalid=16749, Unknown=0, NotChecked=0, Total=19460 [2022-07-19 17:19:03,518 INFO L413 NwaCegarLoop]: 1424 mSDtfsCounter, 5710 mSDsluCounter, 7879 mSDsCounter, 0 mSdLazyCounter, 31218 mSolverCounterSat, 4698 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5722 SdHoareTripleChecker+Valid, 9303 SdHoareTripleChecker+Invalid, 35916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4698 IncrementalHoareTripleChecker+Valid, 31218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-07-19 17:19:03,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5722 Valid, 9303 Invalid, 35916 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4698 Valid, 31218 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2022-07-19 17:19:03,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370649 states.