./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec8_product12.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_spec8_product12.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 cd09b7e02dd7459ada96201e9b5a915c0f0209c05135bf5a5174f874492a34ab --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 17:32:24,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 17:32:24,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 17:32:24,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 17:32:24,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 17:32:24,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 17:32:24,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 17:32:24,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 17:32:24,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 17:32:24,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 17:32:24,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 17:32:24,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 17:32:24,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 17:32:24,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 17:32:24,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 17:32:24,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 17:32:24,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 17:32:24,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 17:32:24,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 17:32:24,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 17:32:24,987 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 17:32:24,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 17:32:24,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 17:32:24,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 17:32:24,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 17:32:24,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 17:32:24,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 17:32:24,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 17:32:24,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 17:32:24,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 17:32:24,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 17:32:24,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 17:32:24,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 17:32:24,995 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 17:32:24,996 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 17:32:24,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 17:32:24,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 17:32:24,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 17:32:24,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 17:32:24,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 17:32:24,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 17:32:24,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 17:32:25,012 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 17:32:25,040 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 17:32:25,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 17:32:25,041 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 17:32:25,041 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 17:32:25,042 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 17:32:25,042 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 17:32:25,042 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 17:32:25,043 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 17:32:25,043 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 17:32:25,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 17:32:25,044 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 17:32:25,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 17:32:25,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 17:32:25,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 17:32:25,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 17:32:25,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 17:32:25,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 17:32:25,044 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 17:32:25,045 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 17:32:25,045 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 17:32:25,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 17:32:25,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 17:32:25,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 17:32:25,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 17:32:25,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:32:25,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 17:32:25,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 17:32:25,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 17:32:25,046 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 17:32:25,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 17:32:25,046 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 17:32:25,047 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 17:32:25,047 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 17:32:25,047 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd09b7e02dd7459ada96201e9b5a915c0f0209c05135bf5a5174f874492a34ab [2022-07-22 17:32:25,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 17:32:25,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 17:32:25,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 17:32:25,268 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 17:32:25,269 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 17:32:25,270 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec8_product12.cil.c [2022-07-22 17:32:25,309 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54a0d064d/3fad1654779d440db6b5f20d0bb3f7cc/FLAG99ea102c2 [2022-07-22 17:32:25,755 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 17:32:25,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec8_product12.cil.c [2022-07-22 17:32:25,791 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54a0d064d/3fad1654779d440db6b5f20d0bb3f7cc/FLAG99ea102c2 [2022-07-22 17:32:26,081 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54a0d064d/3fad1654779d440db6b5f20d0bb3f7cc [2022-07-22 17:32:26,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 17:32:26,084 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 17:32:26,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 17:32:26,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 17:32:26,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 17:32:26,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:32:26" (1/1) ... [2022-07-22 17:32:26,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10421851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:32:26, skipping insertion in model container [2022-07-22 17:32:26,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:32:26" (1/1) ... [2022-07-22 17:32:26,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 17:32:26,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 17:32:26,412 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_spec8_product12.cil.c[16969,16982] [2022-07-22 17:32:26,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:32:26,545 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 17:32:26,582 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_spec8_product12.cil.c[16969,16982] [2022-07-22 17:32:26,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:32:26,647 INFO L208 MainTranslator]: Completed translation [2022-07-22 17:32:26,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:32:26 WrapperNode [2022-07-22 17:32:26,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 17:32:26,649 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 17:32:26,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 17:32:26,649 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 17:32:26,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:32:26" (1/1) ... [2022-07-22 17:32:26,685 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:32:26" (1/1) ... [2022-07-22 17:32:26,734 INFO L137 Inliner]: procedures = 123, calls = 191, calls flagged for inlining = 51, calls inlined = 41, statements flattened = 834 [2022-07-22 17:32:26,744 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 17:32:26,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 17:32:26,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 17:32:26,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 17:32:26,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:32:26" (1/1) ... [2022-07-22 17:32:26,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:32:26" (1/1) ... [2022-07-22 17:32:26,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:32:26" (1/1) ... [2022-07-22 17:32:26,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:32:26" (1/1) ... [2022-07-22 17:32:26,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:32:26" (1/1) ... [2022-07-22 17:32:26,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:32:26" (1/1) ... [2022-07-22 17:32:26,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:32:26" (1/1) ... [2022-07-22 17:32:26,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 17:32:26,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 17:32:26,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 17:32:26,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 17:32:26,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:32:26" (1/1) ... [2022-07-22 17:32:26,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:32:26,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:32:26,873 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) [2022-07-22 17:32:26,954 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 [2022-07-22 17:32:26,977 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-07-22 17:32:26,977 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-07-22 17:32:26,978 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-07-22 17:32:26,978 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-07-22 17:32:26,978 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-07-22 17:32:26,978 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-07-22 17:32:26,978 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-07-22 17:32:26,978 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-07-22 17:32:26,981 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-07-22 17:32:26,981 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-07-22 17:32:26,981 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-07-22 17:32:26,982 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-07-22 17:32:26,982 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-07-22 17:32:26,982 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-07-22 17:32:26,982 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-07-22 17:32:26,982 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-07-22 17:32:26,982 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-07-22 17:32:26,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 17:32:27,007 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-07-22 17:32:27,007 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-07-22 17:32:27,007 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-07-22 17:32:27,007 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-07-22 17:32:27,008 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-07-22 17:32:27,008 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-07-22 17:32:27,008 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-07-22 17:32:27,008 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-07-22 17:32:27,008 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-07-22 17:32:27,008 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-07-22 17:32:27,008 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-07-22 17:32:27,008 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-07-22 17:32:27,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 17:32:27,008 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-07-22 17:32:27,008 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-07-22 17:32:27,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 17:32:27,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 17:32:27,215 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 17:32:27,217 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 17:32:27,762 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 17:32:27,772 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 17:32:27,772 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 17:32:27,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:32:27 BoogieIcfgContainer [2022-07-22 17:32:27,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 17:32:27,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 17:32:27,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 17:32:27,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 17:32:27,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 05:32:26" (1/3) ... [2022-07-22 17:32:27,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7515c7ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:32:27, skipping insertion in model container [2022-07-22 17:32:27,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:32:26" (2/3) ... [2022-07-22 17:32:27,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7515c7ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:32:27, skipping insertion in model container [2022-07-22 17:32:27,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:32:27" (3/3) ... [2022-07-22 17:32:27,795 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec8_product12.cil.c [2022-07-22 17:32:27,806 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 17:32:27,806 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 17:32:27,859 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 17:32:27,865 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@4332f6cb, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5abef0f7 [2022-07-22 17:32:27,865 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 17:32:27,877 INFO L276 IsEmpty]: Start isEmpty. Operand has 262 states, 206 states have (on average 1.5533980582524272) internal successors, (320), 210 states have internal predecessors, (320), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-07-22 17:32:27,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-22 17:32:27,896 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:32:27,897 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:32:27,897 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:32:27,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:32:27,901 INFO L85 PathProgramCache]: Analyzing trace with hash 2039353953, now seen corresponding path program 1 times [2022-07-22 17:32:27,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:32:27,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172876270] [2022-07-22 17:32:27,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:27,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:32:28,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:28,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:32:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:28,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:32:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:28,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:32:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:28,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 17:32:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:28,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:32:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:28,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:32:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:28,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 17:32:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:28,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 17:32:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:28,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 17:32:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:28,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 17:32:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:28,274 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-22 17:32:28,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:32:28,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172876270] [2022-07-22 17:32:28,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172876270] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:32:28,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848519797] [2022-07-22 17:32:28,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:28,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:32:28,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:32:28,301 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) [2022-07-22 17:32:28,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 17:32:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:28,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 913 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-22 17:32:28,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:32:28,584 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 17:32:28,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:32:28,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848519797] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:32:28,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:32:28,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2022-07-22 17:32:28,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811252719] [2022-07-22 17:32:28,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:32:28,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 17:32:28,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:32:28,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 17:32:28,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:32:28,609 INFO L87 Difference]: Start difference. First operand has 262 states, 206 states have (on average 1.5533980582524272) internal successors, (320), 210 states have internal predecessors, (320), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 17:32:28,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:32:28,638 INFO L93 Difference]: Finished difference Result 375 states and 558 transitions. [2022-07-22 17:32:28,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 17:32:28,640 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2022-07-22 17:32:28,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:32:28,648 INFO L225 Difference]: With dead ends: 375 [2022-07-22 17:32:28,649 INFO L226 Difference]: Without dead ends: 255 [2022-07-22 17:32:28,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:32:28,654 INFO L413 NwaCegarLoop]: 394 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, 394 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 [2022-07-22 17:32:28,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:32:28,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-07-22 17:32:28,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2022-07-22 17:32:28,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 200 states have (on average 1.545) internal successors, (309), 203 states have internal predecessors, (309), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-07-22 17:32:28,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 386 transitions. [2022-07-22 17:32:28,693 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 386 transitions. Word has length 86 [2022-07-22 17:32:28,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:32:28,694 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 386 transitions. [2022-07-22 17:32:28,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 17:32:28,695 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 386 transitions. [2022-07-22 17:32:28,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-22 17:32:28,698 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:32:28,698 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:32:28,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 17:32:28,915 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 [2022-07-22 17:32:28,916 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:32:28,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:32:28,916 INFO L85 PathProgramCache]: Analyzing trace with hash 71453907, now seen corresponding path program 1 times [2022-07-22 17:32:28,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:32:28,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755660201] [2022-07-22 17:32:28,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:28,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:32:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:28,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:32:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:28,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:32:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:28,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:32:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:28,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 17:32:28,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:28,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:32:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:28,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:32:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:29,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 17:32:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:29,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 17:32:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:29,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 17:32:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:29,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 17:32:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:29,016 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-22 17:32:29,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:32:29,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755660201] [2022-07-22 17:32:29,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755660201] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:32:29,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871738701] [2022-07-22 17:32:29,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:29,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:32:29,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:32:29,018 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) [2022-07-22 17:32:29,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 17:32:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:29,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 914 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 17:32:29,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:32:29,273 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 17:32:29,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:32:29,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871738701] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:32:29,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:32:29,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-22 17:32:29,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317205029] [2022-07-22 17:32:29,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:32:29,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:32:29,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:32:29,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:32:29,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:32:29,276 INFO L87 Difference]: Start difference. First operand 255 states and 386 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 17:32:29,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:32:29,336 INFO L93 Difference]: Finished difference Result 365 states and 539 transitions. [2022-07-22 17:32:29,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:32:29,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 87 [2022-07-22 17:32:29,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:32:29,339 INFO L225 Difference]: With dead ends: 365 [2022-07-22 17:32:29,339 INFO L226 Difference]: Without dead ends: 258 [2022-07-22 17:32:29,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:32:29,341 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 1 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 766 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 [2022-07-22 17:32:29,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 766 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:32:29,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-07-22 17:32:29,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 257. [2022-07-22 17:32:29,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 202 states have (on average 1.5396039603960396) internal successors, (311), 205 states have internal predecessors, (311), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-07-22 17:32:29,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 388 transitions. [2022-07-22 17:32:29,367 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 388 transitions. Word has length 87 [2022-07-22 17:32:29,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:32:29,367 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 388 transitions. [2022-07-22 17:32:29,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 17:32:29,368 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 388 transitions. [2022-07-22 17:32:29,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-22 17:32:29,371 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:32:29,371 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:32:29,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 17:32:29,586 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 [2022-07-22 17:32:29,587 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:32:29,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:32:29,588 INFO L85 PathProgramCache]: Analyzing trace with hash -153867190, now seen corresponding path program 1 times [2022-07-22 17:32:29,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:32:29,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644381080] [2022-07-22 17:32:29,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:29,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:32:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:29,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:32:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:29,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:32:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:29,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:32:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:29,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 17:32:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:29,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:32:29,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:29,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:32:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:29,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 17:32:29,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:29,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 17:32:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:29,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 17:32:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:29,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 17:32:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:29,724 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 17:32:29,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:32:29,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644381080] [2022-07-22 17:32:29,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644381080] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:32:29,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243912770] [2022-07-22 17:32:29,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:29,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:32:29,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:32:29,739 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) [2022-07-22 17:32:29,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 17:32:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:29,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 928 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 17:32:29,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:32:29,937 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 17:32:29,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:32:29,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243912770] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:32:29,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:32:29,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-22 17:32:29,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803517729] [2022-07-22 17:32:29,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:32:29,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:32:29,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:32:29,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:32:29,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:32:29,939 INFO L87 Difference]: Start difference. First operand 257 states and 388 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 17:32:29,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:32:29,965 INFO L93 Difference]: Finished difference Result 539 states and 827 transitions. [2022-07-22 17:32:29,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:32:29,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 93 [2022-07-22 17:32:29,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:32:29,968 INFO L225 Difference]: With dead ends: 539 [2022-07-22 17:32:29,969 INFO L226 Difference]: Without dead ends: 309 [2022-07-22 17:32:29,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:32:29,971 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 99 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 744 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 [2022-07-22 17:32:29,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 744 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:32:29,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-07-22 17:32:29,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 301. [2022-07-22 17:32:29,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 235 states have (on average 1.553191489361702) internal successors, (365), 238 states have internal predecessors, (365), 50 states have call successors, (50), 15 states have call predecessors, (50), 15 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-07-22 17:32:29,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 464 transitions. [2022-07-22 17:32:29,988 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 464 transitions. Word has length 93 [2022-07-22 17:32:29,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:32:29,988 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 464 transitions. [2022-07-22 17:32:29,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 17:32:29,989 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 464 transitions. [2022-07-22 17:32:29,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-22 17:32:29,990 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:32:29,990 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:32:30,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 17:32:30,209 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 [2022-07-22 17:32:30,209 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:32:30,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:32:30,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1701782700, now seen corresponding path program 1 times [2022-07-22 17:32:30,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:32:30,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41337435] [2022-07-22 17:32:30,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:30,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:32:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:30,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:32:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:30,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:32:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:30,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:32:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:30,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 17:32:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:30,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:32:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:30,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:32:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:30,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 17:32:30,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:30,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 17:32:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:30,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 17:32:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:30,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 17:32:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:30,300 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 17:32:30,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:32:30,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41337435] [2022-07-22 17:32:30,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41337435] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:32:30,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180833998] [2022-07-22 17:32:30,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:30,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:32:30,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:32:30,303 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) [2022-07-22 17:32:30,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 17:32:30,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:30,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 935 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 17:32:30,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:32:30,646 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 17:32:30,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:32:30,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180833998] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:32:30,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:32:30,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-07-22 17:32:30,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444604559] [2022-07-22 17:32:30,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:32:30,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:32:30,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:32:30,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:32:30,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:32:30,652 INFO L87 Difference]: Start difference. First operand 301 states and 464 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 17:32:30,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:32:30,716 INFO L93 Difference]: Finished difference Result 593 states and 918 transitions. [2022-07-22 17:32:30,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:32:30,716 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 94 [2022-07-22 17:32:30,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:32:30,719 INFO L225 Difference]: With dead ends: 593 [2022-07-22 17:32:30,719 INFO L226 Difference]: Without dead ends: 303 [2022-07-22 17:32:30,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-22 17:32:30,721 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 117 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1371 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 [2022-07-22 17:32:30,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 1371 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:32:30,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-07-22 17:32:30,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2022-07-22 17:32:30,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 236 states have (on average 1.5508474576271187) internal successors, (366), 240 states have internal predecessors, (366), 50 states have call successors, (50), 15 states have call predecessors, (50), 16 states have return successors, (51), 49 states have call predecessors, (51), 49 states have call successors, (51) [2022-07-22 17:32:30,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 467 transitions. [2022-07-22 17:32:30,747 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 467 transitions. Word has length 94 [2022-07-22 17:32:30,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:32:30,748 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 467 transitions. [2022-07-22 17:32:30,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 17:32:30,748 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 467 transitions. [2022-07-22 17:32:30,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-22 17:32:30,749 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:32:30,750 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:32:30,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 17:32:30,964 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 [2022-07-22 17:32:30,964 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:32:30,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:32:30,965 INFO L85 PathProgramCache]: Analyzing trace with hash 361139953, now seen corresponding path program 1 times [2022-07-22 17:32:30,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:32:30,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047586015] [2022-07-22 17:32:30,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:30,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:32:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:31,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:32:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:31,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:32:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:31,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:32:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:31,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:32:31,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:31,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-22 17:32:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:31,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 17:32:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:31,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 17:32:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:31,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:32:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:31,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 17:32:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:31,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 17:32:31,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:31,056 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 17:32:31,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:32:31,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047586015] [2022-07-22 17:32:31,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047586015] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:32:31,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67319420] [2022-07-22 17:32:31,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:31,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:32:31,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:32:31,058 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) [2022-07-22 17:32:31,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 17:32:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:31,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 17:32:31,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:32:31,274 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 17:32:31,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:32:31,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67319420] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:32:31,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:32:31,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-07-22 17:32:31,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596469855] [2022-07-22 17:32:31,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:32:31,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:32:31,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:32:31,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:32:31,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-22 17:32:31,277 INFO L87 Difference]: Start difference. First operand 303 states and 467 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 17:32:31,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:32:31,318 INFO L93 Difference]: Finished difference Result 595 states and 923 transitions. [2022-07-22 17:32:31,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:32:31,319 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 95 [2022-07-22 17:32:31,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:32:31,321 INFO L225 Difference]: With dead ends: 595 [2022-07-22 17:32:31,321 INFO L226 Difference]: Without dead ends: 305 [2022-07-22 17:32:31,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-07-22 17:32:31,323 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 116 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1360 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 [2022-07-22 17:32:31,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1360 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:32:31,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-07-22 17:32:31,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2022-07-22 17:32:31,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 237 states have (on average 1.5485232067510548) internal successors, (367), 242 states have internal predecessors, (367), 50 states have call successors, (50), 15 states have call predecessors, (50), 17 states have return successors, (56), 49 states have call predecessors, (56), 49 states have call successors, (56) [2022-07-22 17:32:31,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 473 transitions. [2022-07-22 17:32:31,338 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 473 transitions. Word has length 95 [2022-07-22 17:32:31,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:32:31,338 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 473 transitions. [2022-07-22 17:32:31,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 17:32:31,338 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 473 transitions. [2022-07-22 17:32:31,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-22 17:32:31,340 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:32:31,340 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:32:31,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 17:32:31,557 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 [2022-07-22 17:32:31,557 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:32:31,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:32:31,558 INFO L85 PathProgramCache]: Analyzing trace with hash 639964823, now seen corresponding path program 1 times [2022-07-22 17:32:31,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:32:31,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86404945] [2022-07-22 17:32:31,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:31,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:32:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:31,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:32:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:31,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:32:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:31,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:32:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:31,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:32:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:31,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:32:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:31,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 17:32:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:31,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 17:32:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:31,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:32:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:31,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 17:32:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:31,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 17:32:31,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:31,648 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 17:32:31,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:32:31,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86404945] [2022-07-22 17:32:31,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86404945] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:32:31,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:32:31,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 17:32:31,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279755057] [2022-07-22 17:32:31,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:32:31,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 17:32:31,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:32:31,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 17:32:31,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:32:31,650 INFO L87 Difference]: Start difference. First operand 305 states and 473 transitions. Second operand has 8 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 17:32:32,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:32:32,390 INFO L93 Difference]: Finished difference Result 640 states and 998 transitions. [2022-07-22 17:32:32,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:32:32,391 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 96 [2022-07-22 17:32:32,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:32:32,393 INFO L225 Difference]: With dead ends: 640 [2022-07-22 17:32:32,393 INFO L226 Difference]: Without dead ends: 358 [2022-07-22 17:32:32,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-07-22 17:32:32,394 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 676 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 17:32:32,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 1066 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 17:32:32,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-07-22 17:32:32,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 305. [2022-07-22 17:32:32,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 237 states have (on average 1.5485232067510548) internal successors, (367), 242 states have internal predecessors, (367), 50 states have call successors, (50), 15 states have call predecessors, (50), 17 states have return successors, (55), 49 states have call predecessors, (55), 49 states have call successors, (55) [2022-07-22 17:32:32,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 472 transitions. [2022-07-22 17:32:32,431 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 472 transitions. Word has length 96 [2022-07-22 17:32:32,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:32:32,432 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 472 transitions. [2022-07-22 17:32:32,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 17:32:32,432 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 472 transitions. [2022-07-22 17:32:32,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-22 17:32:32,434 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:32:32,434 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:32:32,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 17:32:32,435 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:32:32,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:32:32,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1163878910, now seen corresponding path program 2 times [2022-07-22 17:32:32,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:32:32,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056052164] [2022-07-22 17:32:32,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:32,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:32:32,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:32,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:32:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:32,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:32:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:32,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:32:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:32,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:32:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:32,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:32:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:32,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:32:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:32,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 17:32:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:32,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 17:32:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:32,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 17:32:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:32,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 17:32:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:32,575 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 17:32:32,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:32:32,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056052164] [2022-07-22 17:32:32,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056052164] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:32:32,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:32:32,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 17:32:32,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551135764] [2022-07-22 17:32:32,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:32:32,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 17:32:32,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:32:32,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 17:32:32,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:32:32,577 INFO L87 Difference]: Start difference. First operand 305 states and 472 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 17:32:33,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:32:33,427 INFO L93 Difference]: Finished difference Result 642 states and 1001 transitions. [2022-07-22 17:32:33,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:32:33,428 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 97 [2022-07-22 17:32:33,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:32:33,429 INFO L225 Difference]: With dead ends: 642 [2022-07-22 17:32:33,429 INFO L226 Difference]: Without dead ends: 360 [2022-07-22 17:32:33,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-07-22 17:32:33,431 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 672 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:32:33,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 1067 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:32:33,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-07-22 17:32:33,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 307. [2022-07-22 17:32:33,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 238 states have (on average 1.546218487394958) internal successors, (368), 244 states have internal predecessors, (368), 50 states have call successors, (50), 15 states have call predecessors, (50), 18 states have return successors, (57), 49 states have call predecessors, (57), 49 states have call successors, (57) [2022-07-22 17:32:33,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 475 transitions. [2022-07-22 17:32:33,461 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 475 transitions. Word has length 97 [2022-07-22 17:32:33,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:32:33,462 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 475 transitions. [2022-07-22 17:32:33,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 17:32:33,462 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 475 transitions. [2022-07-22 17:32:33,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-22 17:32:33,463 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:32:33,464 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:32:33,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 17:32:33,464 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:32:33,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:32:33,464 INFO L85 PathProgramCache]: Analyzing trace with hash -223956590, now seen corresponding path program 1 times [2022-07-22 17:32:33,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:32:33,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254672737] [2022-07-22 17:32:33,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:33,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:32:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:33,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:32:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:33,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:32:33,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:33,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:32:33,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:33,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:32:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:33,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:32:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:33,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:32:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:33,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 17:32:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:33,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 17:32:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:33,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 17:32:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:33,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:32:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:33,600 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 17:32:33,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:32:33,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254672737] [2022-07-22 17:32:33,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254672737] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:32:33,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:32:33,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 17:32:33,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818165654] [2022-07-22 17:32:33,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:32:33,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 17:32:33,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:32:33,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 17:32:33,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:32:33,603 INFO L87 Difference]: Start difference. First operand 307 states and 475 transitions. Second operand has 11 states, 10 states have (on average 6.8) internal successors, (68), 8 states have internal predecessors, (68), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-22 17:32:34,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:32:34,599 INFO L93 Difference]: Finished difference Result 640 states and 996 transitions. [2022-07-22 17:32:34,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 17:32:34,599 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.8) internal successors, (68), 8 states have internal predecessors, (68), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 98 [2022-07-22 17:32:34,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:32:34,601 INFO L225 Difference]: With dead ends: 640 [2022-07-22 17:32:34,601 INFO L226 Difference]: Without dead ends: 360 [2022-07-22 17:32:34,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-07-22 17:32:34,603 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 778 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 2174 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 2412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 2174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:32:34,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 1347 Invalid, 2412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 2174 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 17:32:34,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-07-22 17:32:34,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 307. [2022-07-22 17:32:34,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 238 states have (on average 1.546218487394958) internal successors, (368), 244 states have internal predecessors, (368), 50 states have call successors, (50), 15 states have call predecessors, (50), 18 states have return successors, (56), 49 states have call predecessors, (56), 49 states have call successors, (56) [2022-07-22 17:32:34,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 474 transitions. [2022-07-22 17:32:34,645 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 474 transitions. Word has length 98 [2022-07-22 17:32:34,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:32:34,646 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 474 transitions. [2022-07-22 17:32:34,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.8) internal successors, (68), 8 states have internal predecessors, (68), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-22 17:32:34,646 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 474 transitions. [2022-07-22 17:32:34,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-22 17:32:34,648 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:32:34,648 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:32:34,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 17:32:34,649 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:32:34,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:32:34,649 INFO L85 PathProgramCache]: Analyzing trace with hash 749423346, now seen corresponding path program 2 times [2022-07-22 17:32:34,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:32:34,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180089935] [2022-07-22 17:32:34,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:34,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:32:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:34,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:32:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:34,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:32:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:34,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:32:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:34,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:32:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:34,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:32:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:34,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:32:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:34,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 17:32:34,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:34,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 17:32:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:34,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:32:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:34,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:32:34,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:34,787 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 17:32:34,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:32:34,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180089935] [2022-07-22 17:32:34,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180089935] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:32:34,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:32:34,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 17:32:34,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519929480] [2022-07-22 17:32:34,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:32:34,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 17:32:34,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:32:34,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 17:32:34,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:32:34,789 INFO L87 Difference]: Start difference. First operand 307 states and 474 transitions. Second operand has 11 states, 10 states have (on average 6.9) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-22 17:32:35,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:32:35,641 INFO L93 Difference]: Finished difference Result 642 states and 1002 transitions. [2022-07-22 17:32:35,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 17:32:35,642 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.9) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 99 [2022-07-22 17:32:35,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:32:35,644 INFO L225 Difference]: With dead ends: 642 [2022-07-22 17:32:35,644 INFO L226 Difference]: Without dead ends: 362 [2022-07-22 17:32:35,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-07-22 17:32:35,647 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 774 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 1348 SdHoareTripleChecker+Invalid, 2444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:32:35,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 1348 Invalid, 2444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 2212 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:32:35,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-07-22 17:32:35,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 309. [2022-07-22 17:32:35,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 239 states have (on average 1.5439330543933054) internal successors, (369), 246 states have internal predecessors, (369), 50 states have call successors, (50), 15 states have call predecessors, (50), 19 states have return successors, (61), 49 states have call predecessors, (61), 49 states have call successors, (61) [2022-07-22 17:32:35,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 480 transitions. [2022-07-22 17:32:35,671 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 480 transitions. Word has length 99 [2022-07-22 17:32:35,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:32:35,671 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 480 transitions. [2022-07-22 17:32:35,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.9) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-22 17:32:35,671 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 480 transitions. [2022-07-22 17:32:35,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-22 17:32:35,672 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:32:35,673 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:32:35,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 17:32:35,673 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:32:35,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:32:35,673 INFO L85 PathProgramCache]: Analyzing trace with hash 961117165, now seen corresponding path program 1 times [2022-07-22 17:32:35,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:32:35,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312789312] [2022-07-22 17:32:35,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:35,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:32:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:35,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:32:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:35,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:32:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:35,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:32:35,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:35,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:32:35,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:35,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:32:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:35,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:32:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:35,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 17:32:35,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:35,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 17:32:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:35,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 17:32:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:35,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 17:32:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:35,733 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:32:35,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:32:35,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312789312] [2022-07-22 17:32:35,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312789312] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:32:35,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103845503] [2022-07-22 17:32:35,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:35,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:32:35,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:32:35,735 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) [2022-07-22 17:32:35,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 17:32:35,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:35,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 17:32:35,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:32:35,929 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:32:35,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:32:35,978 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:32:35,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103845503] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:32:35,979 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:32:35,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2022-07-22 17:32:35,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871243250] [2022-07-22 17:32:35,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:32:35,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:32:35,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:32:35,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:32:35,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:32:35,982 INFO L87 Difference]: Start difference. First operand 309 states and 480 transitions. Second operand has 10 states, 10 states have (on average 9.1) internal successors, (91), 7 states have internal predecessors, (91), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 17:32:36,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:32:36,966 INFO L93 Difference]: Finished difference Result 796 states and 1300 transitions. [2022-07-22 17:32:36,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 17:32:36,966 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 7 states have internal predecessors, (91), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 100 [2022-07-22 17:32:36,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:32:36,969 INFO L225 Difference]: With dead ends: 796 [2022-07-22 17:32:36,969 INFO L226 Difference]: Without dead ends: 689 [2022-07-22 17:32:36,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-07-22 17:32:36,971 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 867 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 1838 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 2136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 1838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:32:36,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 1653 Invalid, 2136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 1838 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 17:32:36,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2022-07-22 17:32:37,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 612. [2022-07-22 17:32:37,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 478 states have (on average 1.604602510460251) internal successors, (767), 485 states have internal predecessors, (767), 114 states have call successors, (114), 15 states have call predecessors, (114), 19 states have return successors, (135), 113 states have call predecessors, (135), 113 states have call successors, (135) [2022-07-22 17:32:37,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 1016 transitions. [2022-07-22 17:32:37,012 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 1016 transitions. Word has length 100 [2022-07-22 17:32:37,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:32:37,012 INFO L495 AbstractCegarLoop]: Abstraction has 612 states and 1016 transitions. [2022-07-22 17:32:37,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 7 states have internal predecessors, (91), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 17:32:37,012 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 1016 transitions. [2022-07-22 17:32:37,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-22 17:32:37,015 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:32:37,015 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:32:37,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-22 17:32:37,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:32:37,254 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:32:37,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:32:37,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1027284112, now seen corresponding path program 1 times [2022-07-22 17:32:37,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:32:37,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341751368] [2022-07-22 17:32:37,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:37,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:32:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:37,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:32:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:37,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:32:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:37,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:32:37,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:37,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:32:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:37,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:32:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:37,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:32:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:37,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:32:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:37,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 17:32:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:37,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:32:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:37,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 17:32:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:37,336 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:32:37,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:32:37,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341751368] [2022-07-22 17:32:37,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341751368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:32:37,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:32:37,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:32:37,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310012151] [2022-07-22 17:32:37,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:32:37,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:32:37,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:32:37,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:32:37,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:32:37,338 INFO L87 Difference]: Start difference. First operand 612 states and 1016 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 17:32:37,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:32:37,946 INFO L93 Difference]: Finished difference Result 1517 states and 2579 transitions. [2022-07-22 17:32:37,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:32:37,947 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 106 [2022-07-22 17:32:37,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:32:37,951 INFO L225 Difference]: With dead ends: 1517 [2022-07-22 17:32:37,951 INFO L226 Difference]: Without dead ends: 973 [2022-07-22 17:32:37,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:32:37,953 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 665 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:32:37,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 941 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 17:32:37,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2022-07-22 17:32:37,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 912. [2022-07-22 17:32:37,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 714 states have (on average 1.6134453781512605) internal successors, (1152), 721 states have internal predecessors, (1152), 178 states have call successors, (178), 15 states have call predecessors, (178), 19 states have return successors, (209), 177 states have call predecessors, (209), 177 states have call successors, (209) [2022-07-22 17:32:37,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1539 transitions. [2022-07-22 17:32:37,993 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1539 transitions. Word has length 106 [2022-07-22 17:32:37,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:32:37,993 INFO L495 AbstractCegarLoop]: Abstraction has 912 states and 1539 transitions. [2022-07-22 17:32:37,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 17:32:37,993 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1539 transitions. [2022-07-22 17:32:37,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-22 17:32:37,996 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:32:37,996 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:32:37,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 17:32:37,997 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:32:37,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:32:37,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1707978199, now seen corresponding path program 1 times [2022-07-22 17:32:37,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:32:37,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62327748] [2022-07-22 17:32:37,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:37,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:32:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:38,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:32:38,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:38,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:32:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:38,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:32:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:38,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:32:38,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:38,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:32:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:38,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:32:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:38,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:32:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:38,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 17:32:38,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:38,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 17:32:38,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:38,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 17:32:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:38,054 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:32:38,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:32:38,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62327748] [2022-07-22 17:32:38,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62327748] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:32:38,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:32:38,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:32:38,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929376853] [2022-07-22 17:32:38,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:32:38,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:32:38,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:32:38,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:32:38,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:32:38,056 INFO L87 Difference]: Start difference. First operand 912 states and 1539 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 17:32:38,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:32:38,678 INFO L93 Difference]: Finished difference Result 2232 states and 3824 transitions. [2022-07-22 17:32:38,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:32:38,679 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 107 [2022-07-22 17:32:38,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:32:38,685 INFO L225 Difference]: With dead ends: 2232 [2022-07-22 17:32:38,685 INFO L226 Difference]: Without dead ends: 1441 [2022-07-22 17:32:38,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:32:38,688 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 663 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:32:38,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 946 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 17:32:38,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2022-07-22 17:32:38,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 1380. [2022-07-22 17:32:38,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1087 states have (on average 1.6182152713891444) internal successors, (1759), 1094 states have internal predecessors, (1759), 273 states have call successors, (273), 15 states have call predecessors, (273), 19 states have return successors, (304), 272 states have call predecessors, (304), 272 states have call successors, (304) [2022-07-22 17:32:38,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 2336 transitions. [2022-07-22 17:32:38,751 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 2336 transitions. Word has length 107 [2022-07-22 17:32:38,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:32:38,751 INFO L495 AbstractCegarLoop]: Abstraction has 1380 states and 2336 transitions. [2022-07-22 17:32:38,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 17:32:38,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 2336 transitions. [2022-07-22 17:32:38,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-22 17:32:38,756 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:32:38,756 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:32:38,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 17:32:38,756 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:32:38,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:32:38,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1136510194, now seen corresponding path program 1 times [2022-07-22 17:32:38,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:32:38,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622914110] [2022-07-22 17:32:38,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:38,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:32:38,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:38,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:32:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:38,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:32:38,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:38,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:32:38,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:38,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:32:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:38,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:32:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:38,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:32:38,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:38,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 17:32:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:38,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 17:32:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:38,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 17:32:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:38,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 17:32:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:38,813 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:32:38,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:32:38,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622914110] [2022-07-22 17:32:38,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622914110] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:32:38,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:32:38,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:32:38,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65970580] [2022-07-22 17:32:38,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:32:38,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:32:38,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:32:38,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:32:38,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:32:38,815 INFO L87 Difference]: Start difference. First operand 1380 states and 2336 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 17:32:39,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:32:39,475 INFO L93 Difference]: Finished difference Result 3279 states and 5665 transitions. [2022-07-22 17:32:39,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:32:39,476 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 108 [2022-07-22 17:32:39,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:32:39,489 INFO L225 Difference]: With dead ends: 3279 [2022-07-22 17:32:39,489 INFO L226 Difference]: Without dead ends: 2145 [2022-07-22 17:32:39,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:32:39,494 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 661 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:32:39,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 918 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 17:32:39,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2145 states. [2022-07-22 17:32:39,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2145 to 2084. [2022-07-22 17:32:39,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2084 states, 1668 states have (on average 1.6223021582733812) internal successors, (2706), 1675 states have internal predecessors, (2706), 396 states have call successors, (396), 15 states have call predecessors, (396), 19 states have return successors, (443), 395 states have call predecessors, (443), 395 states have call successors, (443) [2022-07-22 17:32:39,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 3545 transitions. [2022-07-22 17:32:39,581 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 3545 transitions. Word has length 108 [2022-07-22 17:32:39,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:32:39,582 INFO L495 AbstractCegarLoop]: Abstraction has 2084 states and 3545 transitions. [2022-07-22 17:32:39,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 17:32:39,582 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 3545 transitions. [2022-07-22 17:32:39,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-22 17:32:39,589 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:32:39,589 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:32:39,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 17:32:39,589 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:32:39,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:32:39,589 INFO L85 PathProgramCache]: Analyzing trace with hash -665915704, now seen corresponding path program 1 times [2022-07-22 17:32:39,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:32:39,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160765452] [2022-07-22 17:32:39,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:39,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:32:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:39,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:32:39,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:39,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:32:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:39,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:32:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:39,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:32:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:39,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:32:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:39,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:32:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:39,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 17:32:39,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:39,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 17:32:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:39,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 17:32:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:39,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 17:32:39,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:39,692 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:32:39,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:32:39,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160765452] [2022-07-22 17:32:39,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160765452] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:32:39,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:32:39,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:32:39,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043931067] [2022-07-22 17:32:39,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:32:39,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:32:39,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:32:39,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:32:39,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:32:39,694 INFO L87 Difference]: Start difference. First operand 2084 states and 3545 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 17:32:40,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:32:40,373 INFO L93 Difference]: Finished difference Result 4898 states and 8519 transitions. [2022-07-22 17:32:40,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:32:40,374 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 109 [2022-07-22 17:32:40,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:32:40,387 INFO L225 Difference]: With dead ends: 4898 [2022-07-22 17:32:40,387 INFO L226 Difference]: Without dead ends: 3264 [2022-07-22 17:32:40,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:32:40,393 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 659 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:32:40,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 920 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 17:32:40,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3264 states. [2022-07-22 17:32:40,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3264 to 3203. [2022-07-22 17:32:40,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3203 states, 2608 states have (on average 1.624616564417178) internal successors, (4237), 2615 states have internal predecessors, (4237), 575 states have call successors, (575), 15 states have call predecessors, (575), 19 states have return successors, (648), 574 states have call predecessors, (648), 574 states have call successors, (648) [2022-07-22 17:32:40,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3203 states to 3203 states and 5460 transitions. [2022-07-22 17:32:40,583 INFO L78 Accepts]: Start accepts. Automaton has 3203 states and 5460 transitions. Word has length 109 [2022-07-22 17:32:40,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:32:40,583 INFO L495 AbstractCegarLoop]: Abstraction has 3203 states and 5460 transitions. [2022-07-22 17:32:40,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 17:32:40,583 INFO L276 IsEmpty]: Start isEmpty. Operand 3203 states and 5460 transitions. [2022-07-22 17:32:40,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-22 17:32:40,589 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:32:40,589 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:32:40,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 17:32:40,590 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:32:40,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:32:40,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1938092110, now seen corresponding path program 1 times [2022-07-22 17:32:40,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:32:40,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063084467] [2022-07-22 17:32:40,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:40,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:32:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:40,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:32:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:40,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:32:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:40,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:32:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:40,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:32:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:40,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:32:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:40,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:32:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:40,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 17:32:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:40,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 17:32:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:40,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 17:32:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:40,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 17:32:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:40,647 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:32:40,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:32:40,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063084467] [2022-07-22 17:32:40,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063084467] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:32:40,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:32:40,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:32:40,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880744407] [2022-07-22 17:32:40,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:32:40,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:32:40,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:32:40,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:32:40,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:32:40,649 INFO L87 Difference]: Start difference. First operand 3203 states and 5460 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 17:32:41,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:32:41,438 INFO L93 Difference]: Finished difference Result 7816 states and 13618 transitions. [2022-07-22 17:32:41,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:32:41,438 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 110 [2022-07-22 17:32:41,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:32:41,462 INFO L225 Difference]: With dead ends: 7816 [2022-07-22 17:32:41,463 INFO L226 Difference]: Without dead ends: 5295 [2022-07-22 17:32:41,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:32:41,471 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 657 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 17:32:41,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 963 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 17:32:41,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5295 states. [2022-07-22 17:32:41,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5295 to 5234. [2022-07-22 17:32:41,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5234 states, 4263 states have (on average 1.615998123387286) internal successors, (6889), 4270 states have internal predecessors, (6889), 951 states have call successors, (951), 15 states have call predecessors, (951), 19 states have return successors, (1068), 950 states have call predecessors, (1068), 950 states have call successors, (1068) [2022-07-22 17:32:41,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 8908 transitions. [2022-07-22 17:32:41,701 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 8908 transitions. Word has length 110 [2022-07-22 17:32:41,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:32:41,701 INFO L495 AbstractCegarLoop]: Abstraction has 5234 states and 8908 transitions. [2022-07-22 17:32:41,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 17:32:41,702 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 8908 transitions. [2022-07-22 17:32:41,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 17:32:41,710 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:32:41,710 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:32:41,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 17:32:41,711 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:32:41,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:32:41,711 INFO L85 PathProgramCache]: Analyzing trace with hash -461540828, now seen corresponding path program 1 times [2022-07-22 17:32:41,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:32:41,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115681661] [2022-07-22 17:32:41,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:41,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:32:41,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:41,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:32:41,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:41,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:32:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:41,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:32:41,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:41,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:32:41,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:41,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:32:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:41,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:32:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:41,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 17:32:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:41,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 17:32:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:41,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 17:32:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:41,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 17:32:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:41,769 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:32:41,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:32:41,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115681661] [2022-07-22 17:32:41,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115681661] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:32:41,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:32:41,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:32:41,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600869139] [2022-07-22 17:32:41,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:32:41,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:32:41,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:32:41,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:32:41,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:32:41,771 INFO L87 Difference]: Start difference. First operand 5234 states and 8908 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 17:32:42,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:32:42,629 INFO L93 Difference]: Finished difference Result 12958 states and 22527 transitions. [2022-07-22 17:32:42,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:32:42,630 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 111 [2022-07-22 17:32:42,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:32:42,677 INFO L225 Difference]: With dead ends: 12958 [2022-07-22 17:32:42,677 INFO L226 Difference]: Without dead ends: 8783 [2022-07-22 17:32:42,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:32:42,691 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 655 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 17:32:42,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 921 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 17:32:42,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8783 states. [2022-07-22 17:32:43,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8783 to 8722. [2022-07-22 17:32:43,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8722 states, 7145 states have (on average 1.6127361791462562) internal successors, (11523), 7152 states have internal predecessors, (11523), 1557 states have call successors, (1557), 15 states have call predecessors, (1557), 19 states have return successors, (1752), 1556 states have call predecessors, (1752), 1556 states have call successors, (1752) [2022-07-22 17:32:43,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8722 states to 8722 states and 14832 transitions. [2022-07-22 17:32:43,085 INFO L78 Accepts]: Start accepts. Automaton has 8722 states and 14832 transitions. Word has length 111 [2022-07-22 17:32:43,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:32:43,085 INFO L495 AbstractCegarLoop]: Abstraction has 8722 states and 14832 transitions. [2022-07-22 17:32:43,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 17:32:43,086 INFO L276 IsEmpty]: Start isEmpty. Operand 8722 states and 14832 transitions. [2022-07-22 17:32:43,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 17:32:43,098 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:32:43,098 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:32:43,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 17:32:43,098 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:32:43,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:32:43,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1120917424, now seen corresponding path program 1 times [2022-07-22 17:32:43,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:32:43,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495576332] [2022-07-22 17:32:43,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:43,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:32:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:43,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:32:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:43,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:32:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:43,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:32:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:43,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:32:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:43,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:32:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:43,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:32:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:43,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:32:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:43,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:32:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:43,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:32:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:43,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 17:32:43,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:43,167 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:32:43,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:32:43,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495576332] [2022-07-22 17:32:43,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495576332] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:32:43,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:32:43,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:32:43,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586649473] [2022-07-22 17:32:43,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:32:43,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:32:43,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:32:43,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:32:43,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:32:43,170 INFO L87 Difference]: Start difference. First operand 8722 states and 14832 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 17:32:44,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:32:44,220 INFO L93 Difference]: Finished difference Result 22617 states and 39233 transitions. [2022-07-22 17:32:44,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:32:44,221 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 112 [2022-07-22 17:32:44,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:32:44,269 INFO L225 Difference]: With dead ends: 22617 [2022-07-22 17:32:44,269 INFO L226 Difference]: Without dead ends: 15376 [2022-07-22 17:32:44,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:32:44,291 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 653 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:32:44,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [668 Valid, 947 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 17:32:44,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15376 states. [2022-07-22 17:32:44,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15376 to 15315. [2022-07-22 17:32:44,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15315 states, 12535 states have (on average 1.6026326286398085) internal successors, (20089), 12542 states have internal predecessors, (20089), 2760 states have call successors, (2760), 15 states have call predecessors, (2760), 19 states have return successors, (3099), 2759 states have call predecessors, (3099), 2759 states have call successors, (3099) [2022-07-22 17:32:44,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15315 states to 15315 states and 25948 transitions. [2022-07-22 17:32:44,938 INFO L78 Accepts]: Start accepts. Automaton has 15315 states and 25948 transitions. Word has length 112 [2022-07-22 17:32:44,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:32:44,939 INFO L495 AbstractCegarLoop]: Abstraction has 15315 states and 25948 transitions. [2022-07-22 17:32:44,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 17:32:44,939 INFO L276 IsEmpty]: Start isEmpty. Operand 15315 states and 25948 transitions. [2022-07-22 17:32:44,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 17:32:44,954 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:32:44,954 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:32:44,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 17:32:44,955 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:32:44,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:32:44,955 INFO L85 PathProgramCache]: Analyzing trace with hash -2139517149, now seen corresponding path program 1 times [2022-07-22 17:32:44,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:32:44,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391926549] [2022-07-22 17:32:44,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:44,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:32:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:44,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:32:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:44,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:32:44,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:45,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:32:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:45,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:32:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:45,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:32:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:45,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:32:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:45,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:32:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:45,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 17:32:45,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:45,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 17:32:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:45,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 17:32:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:45,019 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:32:45,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:32:45,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391926549] [2022-07-22 17:32:45,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391926549] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:32:45,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:32:45,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:32:45,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281988833] [2022-07-22 17:32:45,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:32:45,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:32:45,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:32:45,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:32:45,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:32:45,022 INFO L87 Difference]: Start difference. First operand 15315 states and 25948 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 17:32:46,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:32:46,391 INFO L93 Difference]: Finished difference Result 40573 states and 70216 transitions. [2022-07-22 17:32:46,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:32:46,392 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 113 [2022-07-22 17:32:46,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:32:46,484 INFO L225 Difference]: With dead ends: 40573 [2022-07-22 17:32:46,484 INFO L226 Difference]: Without dead ends: 27346 [2022-07-22 17:32:46,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:32:46,521 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 651 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:32:46,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 921 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 17:32:46,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27346 states. [2022-07-22 17:32:47,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27346 to 27285. [2022-07-22 17:32:47,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27285 states, 22466 states have (on average 1.5978367310602688) internal successors, (35897), 22473 states have internal predecessors, (35897), 4799 states have call successors, (4799), 15 states have call predecessors, (4799), 19 states have return successors, (5412), 4798 states have call predecessors, (5412), 4798 states have call successors, (5412) [2022-07-22 17:32:47,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27285 states to 27285 states and 46108 transitions. [2022-07-22 17:32:47,828 INFO L78 Accepts]: Start accepts. Automaton has 27285 states and 46108 transitions. Word has length 113 [2022-07-22 17:32:47,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:32:47,828 INFO L495 AbstractCegarLoop]: Abstraction has 27285 states and 46108 transitions. [2022-07-22 17:32:47,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 17:32:47,828 INFO L276 IsEmpty]: Start isEmpty. Operand 27285 states and 46108 transitions. [2022-07-22 17:32:47,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-22 17:32:47,845 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:32:47,846 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:32:47,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 17:32:47,846 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:32:47,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:32:47,846 INFO L85 PathProgramCache]: Analyzing trace with hash 345033870, now seen corresponding path program 1 times [2022-07-22 17:32:47,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:32:47,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882635478] [2022-07-22 17:32:47,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:47,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:32:47,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:47,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:32:47,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:47,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:32:47,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:47,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:32:47,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:47,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:32:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:47,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:32:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:47,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:32:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:47,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:32:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:47,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 17:32:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:47,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 17:32:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:47,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 17:32:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:47,904 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:32:47,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:32:47,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882635478] [2022-07-22 17:32:47,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882635478] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:32:47,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:32:47,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:32:47,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417488495] [2022-07-22 17:32:47,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:32:47,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:32:47,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:32:47,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:32:47,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:32:47,907 INFO L87 Difference]: Start difference. First operand 27285 states and 46108 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 17:32:49,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:32:49,937 INFO L93 Difference]: Finished difference Result 74360 states and 127815 transitions. [2022-07-22 17:32:49,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:32:49,938 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 114 [2022-07-22 17:32:49,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:32:50,139 INFO L225 Difference]: With dead ends: 74360 [2022-07-22 17:32:50,140 INFO L226 Difference]: Without dead ends: 49895 [2022-07-22 17:32:50,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:32:50,208 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 649 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:32:50,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 929 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 17:32:50,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49895 states. [2022-07-22 17:32:52,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49895 to 49834. [2022-07-22 17:32:52,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49834 states, 41300 states have (on average 1.5917191283292977) internal successors, (65738), 41307 states have internal predecessors, (65738), 8514 states have call successors, (8514), 15 states have call predecessors, (8514), 19 states have return successors, (9659), 8513 states have call predecessors, (9659), 8513 states have call successors, (9659) [2022-07-22 17:32:52,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49834 states to 49834 states and 83911 transitions. [2022-07-22 17:32:52,675 INFO L78 Accepts]: Start accepts. Automaton has 49834 states and 83911 transitions. Word has length 114 [2022-07-22 17:32:52,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:32:52,676 INFO L495 AbstractCegarLoop]: Abstraction has 49834 states and 83911 transitions. [2022-07-22 17:32:52,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 17:32:52,676 INFO L276 IsEmpty]: Start isEmpty. Operand 49834 states and 83911 transitions. [2022-07-22 17:32:52,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-22 17:32:52,703 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:32:52,703 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:32:52,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 17:32:52,704 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:32:52,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:32:52,704 INFO L85 PathProgramCache]: Analyzing trace with hash 866966051, now seen corresponding path program 1 times [2022-07-22 17:32:52,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:32:52,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154959038] [2022-07-22 17:32:52,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:52,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:32:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:52,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:32:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:52,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:32:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:52,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:32:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:52,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:32:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:52,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:32:52,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:52,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:32:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:52,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:32:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:52,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 17:32:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:52,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 17:32:52,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:52,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 17:32:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:52,758 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:32:52,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:32:52,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154959038] [2022-07-22 17:32:52,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154959038] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:32:52,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:32:52,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:32:52,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371153096] [2022-07-22 17:32:52,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:32:52,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:32:52,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:32:52,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:32:52,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:32:52,760 INFO L87 Difference]: Start difference. First operand 49834 states and 83911 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 17:32:56,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:32:56,028 INFO L93 Difference]: Finished difference Result 92846 states and 159946 transitions. [2022-07-22 17:32:56,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:32:56,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 115 [2022-07-22 17:32:56,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:32:56,333 INFO L225 Difference]: With dead ends: 92846 [2022-07-22 17:32:56,334 INFO L226 Difference]: Without dead ends: 92739 [2022-07-22 17:32:56,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:32:56,375 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 647 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:32:56,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 923 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 17:32:56,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92739 states. [2022-07-22 17:33:00,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92739 to 92678. [2022-07-22 17:33:00,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92678 states, 77345 states have (on average 1.5841230848794363) internal successors, (122524), 77352 states have internal predecessors, (122524), 15313 states have call successors, (15313), 15 states have call predecessors, (15313), 19 states have return successors, (17504), 15312 states have call predecessors, (17504), 15312 states have call successors, (17504) [2022-07-22 17:33:00,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92678 states to 92678 states and 155341 transitions. [2022-07-22 17:33:00,506 INFO L78 Accepts]: Start accepts. Automaton has 92678 states and 155341 transitions. Word has length 115 [2022-07-22 17:33:00,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:33:00,507 INFO L495 AbstractCegarLoop]: Abstraction has 92678 states and 155341 transitions. [2022-07-22 17:33:00,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 17:33:00,507 INFO L276 IsEmpty]: Start isEmpty. Operand 92678 states and 155341 transitions. [2022-07-22 17:33:00,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-22 17:33:00,525 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:33:00,525 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:33:00,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 17:33:00,525 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:33:00,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:33:00,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1101885455, now seen corresponding path program 1 times [2022-07-22 17:33:00,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:33:00,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304200459] [2022-07-22 17:33:00,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:33:00,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:33:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:00,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:33:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:00,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:33:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:00,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:33:00,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:00,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:33:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:00,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:33:00,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:00,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:33:00,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:00,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:33:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:00,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 17:33:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:00,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 17:33:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:00,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 17:33:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:00,636 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:33:00,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:33:00,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304200459] [2022-07-22 17:33:00,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304200459] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:33:00,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:33:00,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-22 17:33:00,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134138504] [2022-07-22 17:33:00,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:33:00,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 17:33:00,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:33:00,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 17:33:00,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-07-22 17:33:00,638 INFO L87 Difference]: Start difference. First operand 92678 states and 155341 transitions. Second operand has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-22 17:33:09,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:33:09,508 INFO L93 Difference]: Finished difference Result 185071 states and 322138 transitions. [2022-07-22 17:33:09,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-22 17:33:09,508 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 116 [2022-07-22 17:33:09,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:33:10,432 INFO L225 Difference]: With dead ends: 185071 [2022-07-22 17:33:10,433 INFO L226 Difference]: Without dead ends: 184972 [2022-07-22 17:33:10,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=453, Invalid=1527, Unknown=0, NotChecked=0, Total=1980 [2022-07-22 17:33:10,513 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 2631 mSDsluCounter, 1940 mSDsCounter, 0 mSdLazyCounter, 5350 mSolverCounterSat, 1110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2631 SdHoareTripleChecker+Valid, 2531 SdHoareTripleChecker+Invalid, 6460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1110 IncrementalHoareTripleChecker+Valid, 5350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:33:10,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2631 Valid, 2531 Invalid, 6460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1110 Valid, 5350 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 17:33:10,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184972 states. [2022-07-22 17:33:18,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184972 to 184542. [2022-07-22 17:33:18,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184542 states, 154089 states have (on average 1.5850774552369085) internal successors, (244243), 153991 states have internal predecessors, (244243), 30409 states have call successors, (30409), 38 states have call predecessors, (30409), 43 states have return successors, (38058), 30518 states have call predecessors, (38058), 30406 states have call successors, (38058) [2022-07-22 17:33:19,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184542 states to 184542 states and 312710 transitions. [2022-07-22 17:33:19,755 INFO L78 Accepts]: Start accepts. Automaton has 184542 states and 312710 transitions. Word has length 116 [2022-07-22 17:33:19,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:33:19,755 INFO L495 AbstractCegarLoop]: Abstraction has 184542 states and 312710 transitions. [2022-07-22 17:33:19,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-22 17:33:19,756 INFO L276 IsEmpty]: Start isEmpty. Operand 184542 states and 312710 transitions. [2022-07-22 17:33:19,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-22 17:33:19,835 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:33:19,835 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:33:19,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 17:33:19,836 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:33:19,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:33:19,836 INFO L85 PathProgramCache]: Analyzing trace with hash 912607469, now seen corresponding path program 1 times [2022-07-22 17:33:19,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:33:19,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395921727] [2022-07-22 17:33:19,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:33:19,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:33:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:19,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:33:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:19,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:33:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:19,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:33:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:19,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:33:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:19,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:33:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:19,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:33:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:19,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:33:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:19,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 17:33:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:19,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 17:33:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:19,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 17:33:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:19,916 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:33:19,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:33:19,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395921727] [2022-07-22 17:33:19,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395921727] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:33:19,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:33:19,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:33:19,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221528501] [2022-07-22 17:33:19,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:33:19,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:33:19,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:33:19,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:33:19,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:33:19,919 INFO L87 Difference]: Start difference. First operand 184542 states and 312710 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 4 states have internal predecessors, (82), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10)