./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec4_product13.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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_spec4_product13.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 a4d75af8ac92d9f5b92cf5fbd6315f6202b8108aa1e42fc32d65f286c89fdf2f --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 17:48:00,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 17:48:00,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 17:48:00,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 17:48:00,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 17:48:00,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 17:48:00,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 17:48:00,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 17:48:00,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 17:48:00,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 17:48:00,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 17:48:00,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 17:48:00,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 17:48:00,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 17:48:00,261 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 17:48:00,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 17:48:00,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 17:48:00,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 17:48:00,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 17:48:00,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 17:48:00,271 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 17:48:00,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 17:48:00,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 17:48:00,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 17:48:00,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 17:48:00,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 17:48:00,279 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 17:48:00,279 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 17:48:00,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 17:48:00,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 17:48:00,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 17:48:00,281 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 17:48:00,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 17:48:00,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 17:48:00,284 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 17:48:00,284 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 17:48:00,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 17:48:00,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 17:48:00,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 17:48:00,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 17:48:00,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 17:48:00,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 17:48:00,288 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 17:48:00,311 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 17:48:00,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 17:48:00,311 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 17:48:00,312 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 17:48:00,312 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 17:48:00,312 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 17:48:00,313 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 17:48:00,313 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 17:48:00,313 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 17:48:00,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 17:48:00,314 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 17:48:00,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 17:48:00,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 17:48:00,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 17:48:00,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 17:48:00,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 17:48:00,315 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 17:48:00,315 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 17:48:00,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 17:48:00,315 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 17:48:00,315 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 17:48:00,315 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 17:48:00,315 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 17:48:00,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 17:48:00,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:48:00,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 17:48:00,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 17:48:00,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 17:48:00,317 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 17:48:00,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 17:48:00,317 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 17:48:00,318 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 17:48:00,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 17:48:00,318 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4d75af8ac92d9f5b92cf5fbd6315f6202b8108aa1e42fc32d65f286c89fdf2f [2022-07-13 17:48:00,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 17:48:00,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 17:48:00,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 17:48:00,518 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 17:48:00,518 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 17:48:00,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec4_product13.cil.c [2022-07-13 17:48:00,584 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b78e01b85/ae7d5a2bdaa346509102e54aeccf6191/FLAG5403fa13d [2022-07-13 17:48:01,045 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 17:48:01,046 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec4_product13.cil.c [2022-07-13 17:48:01,061 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b78e01b85/ae7d5a2bdaa346509102e54aeccf6191/FLAG5403fa13d [2022-07-13 17:48:01,072 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b78e01b85/ae7d5a2bdaa346509102e54aeccf6191 [2022-07-13 17:48:01,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 17:48:01,075 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 17:48:01,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 17:48:01,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 17:48:01,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 17:48:01,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:48:01" (1/1) ... [2022-07-13 17:48:01,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@642eb6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:48:01, skipping insertion in model container [2022-07-13 17:48:01,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:48:01" (1/1) ... [2022-07-13 17:48:01,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 17:48:01,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 17:48:01,414 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_spec4_product13.cil.c[42804,42817] [2022-07-13 17:48:01,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:48:01,504 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 17:48:01,550 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_spec4_product13.cil.c[42804,42817] [2022-07-13 17:48:01,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:48:01,598 INFO L208 MainTranslator]: Completed translation [2022-07-13 17:48:01,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:48:01 WrapperNode [2022-07-13 17:48:01,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 17:48:01,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 17:48:01,600 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 17:48:01,600 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 17:48:01,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:48:01" (1/1) ... [2022-07-13 17:48:01,631 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:48:01" (1/1) ... [2022-07-13 17:48:01,668 INFO L137 Inliner]: procedures = 124, calls = 189, calls flagged for inlining = 53, calls inlined = 44, statements flattened = 837 [2022-07-13 17:48:01,668 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 17:48:01,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 17:48:01,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 17:48:01,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 17:48:01,675 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:48:01" (1/1) ... [2022-07-13 17:48:01,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:48:01" (1/1) ... [2022-07-13 17:48:01,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:48:01" (1/1) ... [2022-07-13 17:48:01,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:48:01" (1/1) ... [2022-07-13 17:48:01,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:48:01" (1/1) ... [2022-07-13 17:48:01,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:48:01" (1/1) ... [2022-07-13 17:48:01,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:48:01" (1/1) ... [2022-07-13 17:48:01,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 17:48:01,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 17:48:01,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 17:48:01,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 17:48:01,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:48:01" (1/1) ... [2022-07-13 17:48:01,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:48:01,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:48:01,733 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) [2022-07-13 17:48:01,736 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 [2022-07-13 17:48:01,757 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-07-13 17:48:01,757 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-07-13 17:48:01,757 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-07-13 17:48:01,757 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-07-13 17:48:01,758 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-07-13 17:48:01,758 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-07-13 17:48:01,758 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-07-13 17:48:01,758 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-07-13 17:48:01,758 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-07-13 17:48:01,758 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-07-13 17:48:01,758 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-07-13 17:48:01,758 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-07-13 17:48:01,758 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-07-13 17:48:01,759 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-07-13 17:48:01,759 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-07-13 17:48:01,759 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-07-13 17:48:01,759 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-07-13 17:48:01,766 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-07-13 17:48:01,767 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-07-13 17:48:01,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 17:48:01,767 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-07-13 17:48:01,767 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-07-13 17:48:01,767 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-07-13 17:48:01,767 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-07-13 17:48:01,768 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-07-13 17:48:01,768 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-07-13 17:48:01,768 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-07-13 17:48:01,768 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-07-13 17:48:01,768 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-07-13 17:48:01,768 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-07-13 17:48:01,768 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-07-13 17:48:01,768 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-07-13 17:48:01,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 17:48:01,769 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-07-13 17:48:01,769 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-07-13 17:48:01,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 17:48:01,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 17:48:01,975 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 17:48:01,977 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 17:48:02,341 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 17:48:02,354 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 17:48:02,354 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 17:48:02,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:48:02 BoogieIcfgContainer [2022-07-13 17:48:02,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 17:48:02,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 17:48:02,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 17:48:02,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 17:48:02,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 05:48:01" (1/3) ... [2022-07-13 17:48:02,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c0d808f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:48:02, skipping insertion in model container [2022-07-13 17:48:02,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:48:01" (2/3) ... [2022-07-13 17:48:02,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c0d808f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:48:02, skipping insertion in model container [2022-07-13 17:48:02,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:48:02" (3/3) ... [2022-07-13 17:48:02,363 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec4_product13.cil.c [2022-07-13 17:48:02,381 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 17:48:02,381 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 17:48:02,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 17:48:02,427 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@7f62fdcf, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@183a7644 [2022-07-13 17:48:02,428 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 17:48:02,431 INFO L276 IsEmpty]: Start isEmpty. Operand has 271 states, 216 states have (on average 1.5509259259259258) internal successors, (335), 218 states have internal predecessors, (335), 37 states have call successors, (37), 16 states have call predecessors, (37), 16 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-13 17:48:02,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-13 17:48:02,444 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:02,445 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-13 17:48:02,445 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:02,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:02,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1430097031, now seen corresponding path program 1 times [2022-07-13 17:48:02,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:02,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880929661] [2022-07-13 17:48:02,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:02,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:02,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:02,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:02,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:02,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:48:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:02,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:48:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:02,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:48:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:02,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 17:48:02,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:02,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 17:48:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:02,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 17:48:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:02,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 17:48:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:02,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 17:48:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:02,833 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-13 17:48:02,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:02,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880929661] [2022-07-13 17:48:02,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880929661] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:48:02,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394729203] [2022-07-13 17:48:02,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:02,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:48:02,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:48:02,845 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) [2022-07-13 17:48:02,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 17:48:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:03,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 918 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-13 17:48:03,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:48:03,082 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-13 17:48:03,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:48:03,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394729203] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:48:03,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:48:03,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2022-07-13 17:48:03,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145423263] [2022-07-13 17:48:03,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:48:03,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 17:48:03,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:03,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 17:48:03,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:48:03,110 INFO L87 Difference]: Start difference. First operand has 271 states, 216 states have (on average 1.5509259259259258) internal successors, (335), 218 states have internal predecessors, (335), 37 states have call successors, (37), 16 states have call predecessors, (37), 16 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:48:03,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:48:03,145 INFO L93 Difference]: Finished difference Result 393 states and 580 transitions. [2022-07-13 17:48:03,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 17:48:03,147 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 89 [2022-07-13 17:48:03,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:48:03,163 INFO L225 Difference]: With dead ends: 393 [2022-07-13 17:48:03,163 INFO L226 Difference]: Without dead ends: 264 [2022-07-13 17:48:03,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:48:03,175 INFO L413 NwaCegarLoop]: 405 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, 405 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 [2022-07-13 17:48:03,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:48:03,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-07-13 17:48:03,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2022-07-13 17:48:03,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 210 states have (on average 1.542857142857143) internal successors, (324), 211 states have internal predecessors, (324), 37 states have call successors, (37), 16 states have call predecessors, (37), 16 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-07-13 17:48:03,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 397 transitions. [2022-07-13 17:48:03,248 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 397 transitions. Word has length 89 [2022-07-13 17:48:03,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:48:03,253 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 397 transitions. [2022-07-13 17:48:03,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:48:03,253 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 397 transitions. [2022-07-13 17:48:03,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 17:48:03,261 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:03,261 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-13 17:48:03,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 17:48:03,479 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 [2022-07-13 17:48:03,480 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:03,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:03,480 INFO L85 PathProgramCache]: Analyzing trace with hash 146243453, now seen corresponding path program 1 times [2022-07-13 17:48:03,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:03,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312458262] [2022-07-13 17:48:03,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:03,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:03,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:03,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:03,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:03,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:48:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:03,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:48:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:03,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:48:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:03,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 17:48:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:03,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 17:48:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:03,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 17:48:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:03,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 17:48:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:03,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 17:48:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:03,639 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-13 17:48:03,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:03,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312458262] [2022-07-13 17:48:03,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312458262] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:48:03,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67665051] [2022-07-13 17:48:03,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:03,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:48:03,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:48:03,645 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) [2022-07-13 17:48:03,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 17:48:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:03,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 17:48:03,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:48:03,898 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-13 17:48:03,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:48:03,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67665051] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:48:03,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:48:03,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-13 17:48:03,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791026172] [2022-07-13 17:48:03,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:48:03,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 17:48:03,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:03,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 17:48:03,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:48:03,900 INFO L87 Difference]: Start difference. First operand 264 states and 397 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:48:03,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:48:03,926 INFO L93 Difference]: Finished difference Result 383 states and 561 transitions. [2022-07-13 17:48:03,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 17:48:03,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 90 [2022-07-13 17:48:03,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:48:03,928 INFO L225 Difference]: With dead ends: 383 [2022-07-13 17:48:03,928 INFO L226 Difference]: Without dead ends: 267 [2022-07-13 17:48:03,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:48:03,930 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 1 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 788 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 [2022-07-13 17:48:03,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 788 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:48:03,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-07-13 17:48:03,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 266. [2022-07-13 17:48:03,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 212 states have (on average 1.5377358490566038) internal successors, (326), 213 states have internal predecessors, (326), 37 states have call successors, (37), 16 states have call predecessors, (37), 16 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-07-13 17:48:03,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 399 transitions. [2022-07-13 17:48:03,943 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 399 transitions. Word has length 90 [2022-07-13 17:48:03,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:48:03,943 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 399 transitions. [2022-07-13 17:48:03,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:48:03,944 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 399 transitions. [2022-07-13 17:48:03,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-13 17:48:03,945 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:03,945 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-13 17:48:03,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 17:48:04,167 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 [2022-07-13 17:48:04,168 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:04,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:04,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1669237862, now seen corresponding path program 1 times [2022-07-13 17:48:04,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:04,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172184655] [2022-07-13 17:48:04,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:04,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:04,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:04,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:04,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:04,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:04,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:48:04,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:04,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:48:04,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:04,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:48:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:04,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 17:48:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:04,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:48:04,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:04,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 17:48:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:04,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 17:48:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:04,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 17:48:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:04,259 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 17:48:04,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:04,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172184655] [2022-07-13 17:48:04,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172184655] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:48:04,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581703833] [2022-07-13 17:48:04,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:04,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:48:04,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:48:04,260 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) [2022-07-13 17:48:04,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 17:48:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:04,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 933 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:48:04,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:48:04,458 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-13 17:48:04,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:48:04,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581703833] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:48:04,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:48:04,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-13 17:48:04,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584806441] [2022-07-13 17:48:04,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:48:04,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 17:48:04,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:04,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 17:48:04,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:48:04,460 INFO L87 Difference]: Start difference. First operand 266 states and 399 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:48:04,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:48:04,493 INFO L93 Difference]: Finished difference Result 557 states and 849 transitions. [2022-07-13 17:48:04,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 17:48:04,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 96 [2022-07-13 17:48:04,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:48:04,497 INFO L225 Difference]: With dead ends: 557 [2022-07-13 17:48:04,498 INFO L226 Difference]: Without dead ends: 318 [2022-07-13 17:48:04,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:48:04,501 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 99 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 768 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 [2022-07-13 17:48:04,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 768 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:48:04,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-07-13 17:48:04,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 310. [2022-07-13 17:48:04,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 245 states have (on average 1.5510204081632653) internal successors, (380), 246 states have internal predecessors, (380), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-07-13 17:48:04,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 475 transitions. [2022-07-13 17:48:04,525 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 475 transitions. Word has length 96 [2022-07-13 17:48:04,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:48:04,527 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 475 transitions. [2022-07-13 17:48:04,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:48:04,527 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 475 transitions. [2022-07-13 17:48:04,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-13 17:48:04,530 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:04,531 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-13 17:48:04,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-13 17:48:04,743 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 [2022-07-13 17:48:04,743 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:04,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:04,744 INFO L85 PathProgramCache]: Analyzing trace with hash -242486194, now seen corresponding path program 1 times [2022-07-13 17:48:04,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:04,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265724400] [2022-07-13 17:48:04,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:04,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:04,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:04,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:04,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:04,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:48:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:04,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:48:04,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:04,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:48:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:04,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 17:48:04,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:04,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 17:48:04,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:04,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 17:48:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:04,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 17:48:04,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:04,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 17:48:04,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:04,852 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 17:48:04,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:04,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265724400] [2022-07-13 17:48:04,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265724400] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:48:04,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164233707] [2022-07-13 17:48:04,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:04,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:48:04,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:48:04,854 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) [2022-07-13 17:48:04,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 17:48:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:05,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 17:48:05,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:48:05,100 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 17:48:05,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:48:05,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164233707] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:48:05,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:48:05,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-07-13 17:48:05,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246404616] [2022-07-13 17:48:05,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:48:05,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 17:48:05,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:05,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 17:48:05,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:48:05,104 INFO L87 Difference]: Start difference. First operand 310 states and 475 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 17:48:05,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:48:05,166 INFO L93 Difference]: Finished difference Result 611 states and 940 transitions. [2022-07-13 17:48:05,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:48:05,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2022-07-13 17:48:05,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:48:05,171 INFO L225 Difference]: With dead ends: 611 [2022-07-13 17:48:05,171 INFO L226 Difference]: Without dead ends: 312 [2022-07-13 17:48:05,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:48:05,175 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 117 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1415 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 [2022-07-13 17:48:05,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 1415 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:48:05,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-07-13 17:48:05,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2022-07-13 17:48:05,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 246 states have (on average 1.548780487804878) internal successors, (381), 248 states have internal predecessors, (381), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2022-07-13 17:48:05,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 478 transitions. [2022-07-13 17:48:05,204 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 478 transitions. Word has length 97 [2022-07-13 17:48:05,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:48:05,205 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 478 transitions. [2022-07-13 17:48:05,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 17:48:05,206 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 478 transitions. [2022-07-13 17:48:05,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-13 17:48:05,210 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:05,210 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:48:05,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 17:48:05,423 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 [2022-07-13 17:48:05,423 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:05,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:05,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1730126550, now seen corresponding path program 1 times [2022-07-13 17:48:05,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:05,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246651361] [2022-07-13 17:48:05,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:05,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:05,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:05,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:05,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:05,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:48:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:05,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 17:48:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:05,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:48:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:05,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-13 17:48:05,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:05,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 17:48:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:05,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:48:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:05,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 17:48:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:05,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 17:48:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:05,538 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-13 17:48:05,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:05,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246651361] [2022-07-13 17:48:05,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246651361] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:48:05,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084443119] [2022-07-13 17:48:05,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:05,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:48:05,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:48:05,540 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) [2022-07-13 17:48:05,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 17:48:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:05,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 17:48:05,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:48:05,770 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 17:48:05,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:48:05,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084443119] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:48:05,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:48:05,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-07-13 17:48:05,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331529191] [2022-07-13 17:48:05,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:48:05,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 17:48:05,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:05,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 17:48:05,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:48:05,774 INFO L87 Difference]: Start difference. First operand 312 states and 478 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 17:48:05,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:48:05,824 INFO L93 Difference]: Finished difference Result 613 states and 945 transitions. [2022-07-13 17:48:05,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:48:05,824 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 98 [2022-07-13 17:48:05,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:48:05,826 INFO L225 Difference]: With dead ends: 613 [2022-07-13 17:48:05,826 INFO L226 Difference]: Without dead ends: 314 [2022-07-13 17:48:05,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:48:05,827 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 116 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1404 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 [2022-07-13 17:48:05,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1404 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:48:05,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-07-13 17:48:05,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2022-07-13 17:48:05,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 247 states have (on average 1.5465587044534412) internal successors, (382), 250 states have internal predecessors, (382), 48 states have call successors, (48), 16 states have call predecessors, (48), 18 states have return successors, (54), 47 states have call predecessors, (54), 47 states have call successors, (54) [2022-07-13 17:48:05,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 484 transitions. [2022-07-13 17:48:05,838 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 484 transitions. Word has length 98 [2022-07-13 17:48:05,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:48:05,839 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 484 transitions. [2022-07-13 17:48:05,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 17:48:05,839 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 484 transitions. [2022-07-13 17:48:05,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-13 17:48:05,840 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:05,840 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:48:05,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 17:48:06,057 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 [2022-07-13 17:48:06,058 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:06,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:06,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1369225661, now seen corresponding path program 1 times [2022-07-13 17:48:06,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:06,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623538011] [2022-07-13 17:48:06,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:06,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:06,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:06,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:06,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:06,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:06,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:06,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:48:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:06,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:48:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:06,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-13 17:48:06,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:06,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 17:48:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:06,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 17:48:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:06,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 17:48:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:06,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 17:48:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:06,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 17:48:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:06,155 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 17:48:06,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:06,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623538011] [2022-07-13 17:48:06,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623538011] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:48:06,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:48:06,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 17:48:06,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162897443] [2022-07-13 17:48:06,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:48:06,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 17:48:06,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:06,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 17:48:06,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:48:06,157 INFO L87 Difference]: Start difference. First operand 314 states and 484 transitions. Second operand has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 17:48:06,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:48:06,976 INFO L93 Difference]: Finished difference Result 669 states and 1040 transitions. [2022-07-13 17:48:06,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:48:06,977 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 99 [2022-07-13 17:48:06,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:48:06,979 INFO L225 Difference]: With dead ends: 669 [2022-07-13 17:48:06,979 INFO L226 Difference]: Without dead ends: 378 [2022-07-13 17:48:06,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:48:06,980 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 721 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 1462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:48:06,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 1100 Invalid, 1462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 17:48:06,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-07-13 17:48:06,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 314. [2022-07-13 17:48:06,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 247 states have (on average 1.5465587044534412) internal successors, (382), 250 states have internal predecessors, (382), 48 states have call successors, (48), 16 states have call predecessors, (48), 18 states have return successors, (53), 47 states have call predecessors, (53), 47 states have call successors, (53) [2022-07-13 17:48:06,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 483 transitions. [2022-07-13 17:48:06,995 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 483 transitions. Word has length 99 [2022-07-13 17:48:06,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:48:06,995 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 483 transitions. [2022-07-13 17:48:06,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 17:48:06,995 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 483 transitions. [2022-07-13 17:48:06,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-13 17:48:06,996 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:06,997 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:48:06,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 17:48:06,997 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:06,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:06,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1151020745, now seen corresponding path program 2 times [2022-07-13 17:48:06,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:06,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280305370] [2022-07-13 17:48:06,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:06,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:07,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:48:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:48:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 17:48:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 17:48:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 17:48:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 17:48:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 17:48:07,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 17:48:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,064 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 17:48:07,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:07,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280305370] [2022-07-13 17:48:07,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280305370] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:48:07,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:48:07,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 17:48:07,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053307197] [2022-07-13 17:48:07,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:48:07,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 17:48:07,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:07,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 17:48:07,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:48:07,066 INFO L87 Difference]: Start difference. First operand 314 states and 483 transitions. Second operand has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 17:48:07,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:48:07,844 INFO L93 Difference]: Finished difference Result 671 states and 1043 transitions. [2022-07-13 17:48:07,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:48:07,845 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 100 [2022-07-13 17:48:07,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:48:07,847 INFO L225 Difference]: With dead ends: 671 [2022-07-13 17:48:07,847 INFO L226 Difference]: Without dead ends: 380 [2022-07-13 17:48:07,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:48:07,848 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 717 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:48:07,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 1101 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 17:48:07,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-07-13 17:48:07,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 316. [2022-07-13 17:48:07,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 248 states have (on average 1.5443548387096775) internal successors, (383), 252 states have internal predecessors, (383), 48 states have call successors, (48), 16 states have call predecessors, (48), 19 states have return successors, (55), 47 states have call predecessors, (55), 47 states have call successors, (55) [2022-07-13 17:48:07,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 486 transitions. [2022-07-13 17:48:07,865 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 486 transitions. Word has length 100 [2022-07-13 17:48:07,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:48:07,866 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 486 transitions. [2022-07-13 17:48:07,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 17:48:07,866 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 486 transitions. [2022-07-13 17:48:07,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 17:48:07,868 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:07,868 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:48:07,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 17:48:07,868 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:07,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:07,869 INFO L85 PathProgramCache]: Analyzing trace with hash 257753346, now seen corresponding path program 1 times [2022-07-13 17:48:07,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:07,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822777467] [2022-07-13 17:48:07,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:07,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:07,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:48:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:48:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:48:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 17:48:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:48:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-13 17:48:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 17:48:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 17:48:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:07,995 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-13 17:48:07,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:07,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822777467] [2022-07-13 17:48:07,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822777467] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:48:07,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:48:07,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 17:48:07,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136618192] [2022-07-13 17:48:07,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:48:07,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 17:48:07,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:07,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 17:48:07,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:48:07,996 INFO L87 Difference]: Start difference. First operand 316 states and 486 transitions. Second operand has 11 states, 10 states have (on average 6.6) internal successors, (66), 8 states have internal predecessors, (66), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-13 17:48:09,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:48:09,147 INFO L93 Difference]: Finished difference Result 669 states and 1038 transitions. [2022-07-13 17:48:09,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 17:48:09,148 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.6) internal successors, (66), 8 states have internal predecessors, (66), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 101 [2022-07-13 17:48:09,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:48:09,150 INFO L225 Difference]: With dead ends: 669 [2022-07-13 17:48:09,150 INFO L226 Difference]: Without dead ends: 380 [2022-07-13 17:48:09,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-07-13 17:48:09,151 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 823 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 2608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:48:09,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 1381 Invalid, 2608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 17:48:09,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-07-13 17:48:09,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 316. [2022-07-13 17:48:09,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 248 states have (on average 1.5443548387096775) internal successors, (383), 252 states have internal predecessors, (383), 48 states have call successors, (48), 16 states have call predecessors, (48), 19 states have return successors, (54), 47 states have call predecessors, (54), 47 states have call successors, (54) [2022-07-13 17:48:09,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 485 transitions. [2022-07-13 17:48:09,165 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 485 transitions. Word has length 101 [2022-07-13 17:48:09,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:48:09,165 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 485 transitions. [2022-07-13 17:48:09,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.6) internal successors, (66), 8 states have internal predecessors, (66), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-13 17:48:09,165 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 485 transitions. [2022-07-13 17:48:09,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-13 17:48:09,166 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:09,167 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:48:09,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 17:48:09,167 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:09,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:09,167 INFO L85 PathProgramCache]: Analyzing trace with hash -608894531, now seen corresponding path program 2 times [2022-07-13 17:48:09,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:09,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664833600] [2022-07-13 17:48:09,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:09,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:09,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:09,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:09,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:09,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:09,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:48:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:09,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:48:09,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:09,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:48:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:09,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 17:48:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:09,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 17:48:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:09,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 17:48:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:09,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 17:48:09,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:09,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 17:48:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:09,286 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-13 17:48:09,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:09,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664833600] [2022-07-13 17:48:09,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664833600] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:48:09,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:48:09,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 17:48:09,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142784185] [2022-07-13 17:48:09,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:48:09,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 17:48:09,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:09,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 17:48:09,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:48:09,288 INFO L87 Difference]: Start difference. First operand 316 states and 485 transitions. Second operand has 11 states, 10 states have (on average 6.7) internal successors, (67), 8 states have internal predecessors, (67), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-13 17:48:10,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:48:10,386 INFO L93 Difference]: Finished difference Result 671 states and 1044 transitions. [2022-07-13 17:48:10,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 17:48:10,386 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.7) internal successors, (67), 8 states have internal predecessors, (67), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 102 [2022-07-13 17:48:10,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:48:10,388 INFO L225 Difference]: With dead ends: 671 [2022-07-13 17:48:10,388 INFO L226 Difference]: Without dead ends: 382 [2022-07-13 17:48:10,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-07-13 17:48:10,389 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 819 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 2415 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 2635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 2415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:48:10,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 1382 Invalid, 2635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 2415 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 17:48:10,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-07-13 17:48:10,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 318. [2022-07-13 17:48:10,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 249 states have (on average 1.5421686746987953) internal successors, (384), 254 states have internal predecessors, (384), 48 states have call successors, (48), 16 states have call predecessors, (48), 20 states have return successors, (59), 47 states have call predecessors, (59), 47 states have call successors, (59) [2022-07-13 17:48:10,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 491 transitions. [2022-07-13 17:48:10,405 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 491 transitions. Word has length 102 [2022-07-13 17:48:10,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:48:10,406 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 491 transitions. [2022-07-13 17:48:10,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.7) internal successors, (67), 8 states have internal predecessors, (67), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-13 17:48:10,406 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 491 transitions. [2022-07-13 17:48:10,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-13 17:48:10,407 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:10,407 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:48:10,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 17:48:10,408 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:10,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:10,408 INFO L85 PathProgramCache]: Analyzing trace with hash -303425497, now seen corresponding path program 1 times [2022-07-13 17:48:10,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:10,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087756160] [2022-07-13 17:48:10,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:10,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:10,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:10,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:10,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:10,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:48:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:10,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:48:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:10,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:48:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:10,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 17:48:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:10,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 17:48:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:10,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 17:48:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:10,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 17:48:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:10,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 17:48:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:10,487 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-13 17:48:10,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:10,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087756160] [2022-07-13 17:48:10,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087756160] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:48:10,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138088068] [2022-07-13 17:48:10,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:10,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:48:10,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:48:10,489 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) [2022-07-13 17:48:10,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 17:48:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:10,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:48:10,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:48:10,701 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-13 17:48:10,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 17:48:10,752 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-13 17:48:10,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138088068] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 17:48:10,752 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 17:48:10,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2022-07-13 17:48:10,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953438237] [2022-07-13 17:48:10,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 17:48:10,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 17:48:10,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:10,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 17:48:10,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:48:10,755 INFO L87 Difference]: Start difference. First operand 318 states and 491 transitions. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 7 states have internal predecessors, (89), 2 states have call successors, (26), 5 states have call predecessors, (26), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 17:48:11,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:48:11,831 INFO L93 Difference]: Finished difference Result 825 states and 1342 transitions. [2022-07-13 17:48:11,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 17:48:11,832 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 7 states have internal predecessors, (89), 2 states have call successors, (26), 5 states have call predecessors, (26), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 103 [2022-07-13 17:48:11,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:48:11,836 INFO L225 Difference]: With dead ends: 825 [2022-07-13 17:48:11,836 INFO L226 Difference]: Without dead ends: 709 [2022-07-13 17:48:11,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:48:11,838 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 912 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 1963 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 2235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 1963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:48:11,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 1503 Invalid, 2235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 1963 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 17:48:11,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2022-07-13 17:48:11,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 621. [2022-07-13 17:48:11,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 488 states have (on average 1.6024590163934427) internal successors, (782), 493 states have internal predecessors, (782), 112 states have call successors, (112), 16 states have call predecessors, (112), 20 states have return successors, (133), 111 states have call predecessors, (133), 111 states have call successors, (133) [2022-07-13 17:48:11,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 1027 transitions. [2022-07-13 17:48:11,871 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 1027 transitions. Word has length 103 [2022-07-13 17:48:11,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:48:11,872 INFO L495 AbstractCegarLoop]: Abstraction has 621 states and 1027 transitions. [2022-07-13 17:48:11,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 7 states have internal predecessors, (89), 2 states have call successors, (26), 5 states have call predecessors, (26), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 17:48:11,872 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 1027 transitions. [2022-07-13 17:48:11,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-13 17:48:11,875 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:11,875 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:48:11,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-13 17:48:12,094 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 [2022-07-13 17:48:12,094 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:12,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:12,095 INFO L85 PathProgramCache]: Analyzing trace with hash -431869596, now seen corresponding path program 1 times [2022-07-13 17:48:12,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:12,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734558479] [2022-07-13 17:48:12,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:12,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:12,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:48:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:48:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:48:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 17:48:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 17:48:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 17:48:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 17:48:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 17:48:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,170 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-13 17:48:12,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:12,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734558479] [2022-07-13 17:48:12,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734558479] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:48:12,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:48:12,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:48:12,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138491931] [2022-07-13 17:48:12,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:48:12,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:48:12,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:12,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:48:12,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:48:12,173 INFO L87 Difference]: Start difference. First operand 621 states and 1027 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:48:12,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:48:12,775 INFO L93 Difference]: Finished difference Result 1546 states and 2621 transitions. [2022-07-13 17:48:12,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:48:12,776 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2022-07-13 17:48:12,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:48:12,781 INFO L225 Difference]: With dead ends: 1546 [2022-07-13 17:48:12,781 INFO L226 Difference]: Without dead ends: 993 [2022-07-13 17:48:12,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:48:12,783 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 710 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 17:48:12,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 979 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 17:48:12,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2022-07-13 17:48:12,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 921. [2022-07-13 17:48:12,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 724 states have (on average 1.611878453038674) internal successors, (1167), 729 states have internal predecessors, (1167), 176 states have call successors, (176), 16 states have call predecessors, (176), 20 states have return successors, (207), 175 states have call predecessors, (207), 175 states have call successors, (207) [2022-07-13 17:48:12,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1550 transitions. [2022-07-13 17:48:12,822 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1550 transitions. Word has length 109 [2022-07-13 17:48:12,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:48:12,823 INFO L495 AbstractCegarLoop]: Abstraction has 921 states and 1550 transitions. [2022-07-13 17:48:12,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:48:12,823 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1550 transitions. [2022-07-13 17:48:12,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-13 17:48:12,826 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:12,826 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:48:12,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 17:48:12,826 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:12,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:12,827 INFO L85 PathProgramCache]: Analyzing trace with hash -285337811, now seen corresponding path program 1 times [2022-07-13 17:48:12,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:12,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745260685] [2022-07-13 17:48:12,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:12,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:12,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:48:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:48:12,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:48:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 17:48:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 17:48:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 17:48:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 17:48:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 17:48:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:12,912 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-13 17:48:12,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:12,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745260685] [2022-07-13 17:48:12,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745260685] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:48:12,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:48:12,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:48:12,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547088292] [2022-07-13 17:48:12,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:48:12,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:48:12,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:12,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:48:12,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:48:12,914 INFO L87 Difference]: Start difference. First operand 921 states and 1550 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:48:13,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:48:13,558 INFO L93 Difference]: Finished difference Result 2261 states and 3866 transitions. [2022-07-13 17:48:13,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:48:13,558 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2022-07-13 17:48:13,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:48:13,565 INFO L225 Difference]: With dead ends: 2261 [2022-07-13 17:48:13,565 INFO L226 Difference]: Without dead ends: 1461 [2022-07-13 17:48:13,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:48:13,568 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 708 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 17:48:13,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 958 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 17:48:13,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2022-07-13 17:48:13,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1389. [2022-07-13 17:48:13,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1389 states, 1097 states have (on average 1.6171376481312671) internal successors, (1774), 1102 states have internal predecessors, (1774), 271 states have call successors, (271), 16 states have call predecessors, (271), 20 states have return successors, (302), 270 states have call predecessors, (302), 270 states have call successors, (302) [2022-07-13 17:48:13,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 2347 transitions. [2022-07-13 17:48:13,633 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 2347 transitions. Word has length 110 [2022-07-13 17:48:13,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:48:13,634 INFO L495 AbstractCegarLoop]: Abstraction has 1389 states and 2347 transitions. [2022-07-13 17:48:13,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:48:13,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 2347 transitions. [2022-07-13 17:48:13,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-13 17:48:13,639 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:13,639 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:48:13,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 17:48:13,639 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:13,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:13,639 INFO L85 PathProgramCache]: Analyzing trace with hash -630367642, now seen corresponding path program 1 times [2022-07-13 17:48:13,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:13,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811446927] [2022-07-13 17:48:13,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:13,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:13,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:13,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:13,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:13,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:13,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:48:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:13,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:48:13,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:13,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:48:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:13,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 17:48:13,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:13,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-13 17:48:13,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:13,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 17:48:13,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:13,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 17:48:13,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:13,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 17:48:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:13,696 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-13 17:48:13,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:13,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811446927] [2022-07-13 17:48:13,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811446927] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:48:13,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:48:13,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:48:13,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435298944] [2022-07-13 17:48:13,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:48:13,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:48:13,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:13,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:48:13,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:48:13,698 INFO L87 Difference]: Start difference. First operand 1389 states and 2347 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, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:48:14,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:48:14,308 INFO L93 Difference]: Finished difference Result 3308 states and 5707 transitions. [2022-07-13 17:48:14,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:48:14,309 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, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 111 [2022-07-13 17:48:14,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:48:14,327 INFO L225 Difference]: With dead ends: 3308 [2022-07-13 17:48:14,327 INFO L226 Difference]: Without dead ends: 2165 [2022-07-13 17:48:14,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:48:14,331 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 706 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 17:48:14,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 952 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 17:48:14,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2022-07-13 17:48:14,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 2093. [2022-07-13 17:48:14,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2093 states, 1678 states have (on average 1.6215733015494636) internal successors, (2721), 1683 states have internal predecessors, (2721), 394 states have call successors, (394), 16 states have call predecessors, (394), 20 states have return successors, (441), 393 states have call predecessors, (441), 393 states have call successors, (441) [2022-07-13 17:48:14,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2093 states to 2093 states and 3556 transitions. [2022-07-13 17:48:14,427 INFO L78 Accepts]: Start accepts. Automaton has 2093 states and 3556 transitions. Word has length 111 [2022-07-13 17:48:14,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:48:14,428 INFO L495 AbstractCegarLoop]: Abstraction has 2093 states and 3556 transitions. [2022-07-13 17:48:14,428 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, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:48:14,428 INFO L276 IsEmpty]: Start isEmpty. Operand 2093 states and 3556 transitions. [2022-07-13 17:48:14,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-13 17:48:14,435 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:14,435 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:48:14,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 17:48:14,435 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:14,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:14,436 INFO L85 PathProgramCache]: Analyzing trace with hash 848726510, now seen corresponding path program 1 times [2022-07-13 17:48:14,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:14,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036232368] [2022-07-13 17:48:14,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:14,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:14,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:14,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:14,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:14,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:48:14,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:14,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:48:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:14,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:48:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:14,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:48:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:14,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 17:48:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:14,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 17:48:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:14,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 17:48:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:14,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 17:48:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:14,504 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-13 17:48:14,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:14,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036232368] [2022-07-13 17:48:14,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036232368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:48:14,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:48:14,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:48:14,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552090964] [2022-07-13 17:48:14,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:48:14,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:48:14,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:14,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:48:14,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:48:14,506 INFO L87 Difference]: Start difference. First operand 2093 states and 3556 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, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:48:15,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:48:15,171 INFO L93 Difference]: Finished difference Result 4927 states and 8561 transitions. [2022-07-13 17:48:15,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:48:15,171 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, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2022-07-13 17:48:15,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:48:15,183 INFO L225 Difference]: With dead ends: 4927 [2022-07-13 17:48:15,183 INFO L226 Difference]: Without dead ends: 3284 [2022-07-13 17:48:15,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:48:15,188 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 704 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 17:48:15,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 954 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 17:48:15,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3284 states. [2022-07-13 17:48:15,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3284 to 3212. [2022-07-13 17:48:15,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3212 states, 2618 states have (on average 1.624140565317036) internal successors, (4252), 2623 states have internal predecessors, (4252), 573 states have call successors, (573), 16 states have call predecessors, (573), 20 states have return successors, (646), 572 states have call predecessors, (646), 572 states have call successors, (646) [2022-07-13 17:48:15,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3212 states to 3212 states and 5471 transitions. [2022-07-13 17:48:15,319 INFO L78 Accepts]: Start accepts. Automaton has 3212 states and 5471 transitions. Word has length 112 [2022-07-13 17:48:15,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:48:15,320 INFO L495 AbstractCegarLoop]: Abstraction has 3212 states and 5471 transitions. [2022-07-13 17:48:15,320 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, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:48:15,320 INFO L276 IsEmpty]: Start isEmpty. Operand 3212 states and 5471 transitions. [2022-07-13 17:48:15,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 17:48:15,326 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:15,327 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:48:15,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 17:48:15,327 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:15,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:15,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1608170622, now seen corresponding path program 1 times [2022-07-13 17:48:15,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:15,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878930979] [2022-07-13 17:48:15,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:15,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:15,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:15,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:15,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:15,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:15,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:15,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:15,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:48:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:15,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:48:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:15,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:48:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:15,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 17:48:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:15,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 17:48:15,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:15,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 17:48:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:15,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 17:48:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:15,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 17:48:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:15,380 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-13 17:48:15,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:15,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878930979] [2022-07-13 17:48:15,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878930979] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:48:15,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:48:15,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:48:15,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610126232] [2022-07-13 17:48:15,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:48:15,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:48:15,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:15,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:48:15,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:48:15,382 INFO L87 Difference]: Start difference. First operand 3212 states and 5471 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, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:48:16,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:48:16,078 INFO L93 Difference]: Finished difference Result 7845 states and 13660 transitions. [2022-07-13 17:48:16,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:48:16,078 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, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 113 [2022-07-13 17:48:16,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:48:16,103 INFO L225 Difference]: With dead ends: 7845 [2022-07-13 17:48:16,103 INFO L226 Difference]: Without dead ends: 5315 [2022-07-13 17:48:16,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:48:16,128 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 702 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 17:48:16,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 963 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 17:48:16,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5315 states. [2022-07-13 17:48:16,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5315 to 5243. [2022-07-13 17:48:16,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5243 states, 4273 states have (on average 1.615726655745378) internal successors, (6904), 4278 states have internal predecessors, (6904), 949 states have call successors, (949), 16 states have call predecessors, (949), 20 states have return successors, (1066), 948 states have call predecessors, (1066), 948 states have call successors, (1066) [2022-07-13 17:48:16,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5243 states to 5243 states and 8919 transitions. [2022-07-13 17:48:16,393 INFO L78 Accepts]: Start accepts. Automaton has 5243 states and 8919 transitions. Word has length 113 [2022-07-13 17:48:16,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:48:16,394 INFO L495 AbstractCegarLoop]: Abstraction has 5243 states and 8919 transitions. [2022-07-13 17:48:16,394 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, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:48:16,394 INFO L276 IsEmpty]: Start isEmpty. Operand 5243 states and 8919 transitions. [2022-07-13 17:48:16,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-13 17:48:16,404 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:16,404 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:48:16,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 17:48:16,404 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:16,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:16,405 INFO L85 PathProgramCache]: Analyzing trace with hash 334385362, now seen corresponding path program 1 times [2022-07-13 17:48:16,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:16,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733249860] [2022-07-13 17:48:16,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:16,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:16,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:16,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:16,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:16,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:16,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:48:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:16,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:48:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:16,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:48:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:16,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 17:48:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:16,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 17:48:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:16,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 17:48:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:16,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 17:48:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:16,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 17:48:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:16,469 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-13 17:48:16,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:16,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733249860] [2022-07-13 17:48:16,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733249860] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:48:16,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:48:16,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:48:16,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924958304] [2022-07-13 17:48:16,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:48:16,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:48:16,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:16,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:48:16,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:48:16,471 INFO L87 Difference]: Start difference. First operand 5243 states and 8919 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, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:48:17,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:48:17,316 INFO L93 Difference]: Finished difference Result 12987 states and 22569 transitions. [2022-07-13 17:48:17,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:48:17,317 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, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 114 [2022-07-13 17:48:17,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:48:17,362 INFO L225 Difference]: With dead ends: 12987 [2022-07-13 17:48:17,362 INFO L226 Difference]: Without dead ends: 8803 [2022-07-13 17:48:17,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:48:17,373 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 700 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 17:48:17,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 955 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 17:48:17,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8803 states. [2022-07-13 17:48:17,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8803 to 8731. [2022-07-13 17:48:17,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8731 states, 7155 states have (on average 1.6125786163522013) internal successors, (11538), 7160 states have internal predecessors, (11538), 1555 states have call successors, (1555), 16 states have call predecessors, (1555), 20 states have return successors, (1750), 1554 states have call predecessors, (1750), 1554 states have call successors, (1750) [2022-07-13 17:48:17,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8731 states to 8731 states and 14843 transitions. [2022-07-13 17:48:17,805 INFO L78 Accepts]: Start accepts. Automaton has 8731 states and 14843 transitions. Word has length 114 [2022-07-13 17:48:17,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:48:17,805 INFO L495 AbstractCegarLoop]: Abstraction has 8731 states and 14843 transitions. [2022-07-13 17:48:17,806 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, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:48:17,806 INFO L276 IsEmpty]: Start isEmpty. Operand 8731 states and 14843 transitions. [2022-07-13 17:48:17,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-13 17:48:17,819 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:17,819 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:48:17,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 17:48:17,819 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:17,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:17,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1948475804, now seen corresponding path program 1 times [2022-07-13 17:48:17,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:17,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113414144] [2022-07-13 17:48:17,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:17,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:17,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:17,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:17,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:17,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:17,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:48:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:17,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:48:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:17,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:48:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:17,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:48:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:17,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 17:48:17,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:17,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 17:48:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:17,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 17:48:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:17,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 17:48:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:17,874 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-13 17:48:17,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:17,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113414144] [2022-07-13 17:48:17,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113414144] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:48:17,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:48:17,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:48:17,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291452292] [2022-07-13 17:48:17,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:48:17,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:48:17,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:17,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:48:17,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:48:17,877 INFO L87 Difference]: Start difference. First operand 8731 states and 14843 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, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:48:18,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:48:18,819 INFO L93 Difference]: Finished difference Result 22646 states and 39275 transitions. [2022-07-13 17:48:18,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:48:18,820 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, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 115 [2022-07-13 17:48:18,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:48:18,864 INFO L225 Difference]: With dead ends: 22646 [2022-07-13 17:48:18,864 INFO L226 Difference]: Without dead ends: 15396 [2022-07-13 17:48:18,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:48:18,886 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 698 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 17:48:18,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 969 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 17:48:18,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15396 states. [2022-07-13 17:48:19,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15396 to 15324. [2022-07-13 17:48:19,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15324 states, 12545 states have (on average 1.6025508170585891) internal successors, (20104), 12550 states have internal predecessors, (20104), 2758 states have call successors, (2758), 16 states have call predecessors, (2758), 20 states have return successors, (3097), 2757 states have call predecessors, (3097), 2757 states have call successors, (3097) [2022-07-13 17:48:19,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15324 states to 15324 states and 25959 transitions. [2022-07-13 17:48:19,573 INFO L78 Accepts]: Start accepts. Automaton has 15324 states and 25959 transitions. Word has length 115 [2022-07-13 17:48:19,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:48:19,573 INFO L495 AbstractCegarLoop]: Abstraction has 15324 states and 25959 transitions. [2022-07-13 17:48:19,573 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, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:48:19,573 INFO L276 IsEmpty]: Start isEmpty. Operand 15324 states and 25959 transitions. [2022-07-13 17:48:19,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-13 17:48:19,589 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:19,589 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:48:19,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 17:48:19,590 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:19,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:19,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1783036109, now seen corresponding path program 1 times [2022-07-13 17:48:19,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:19,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689983300] [2022-07-13 17:48:19,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:19,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:19,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:19,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:19,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:19,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:48:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:19,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:48:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:19,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:48:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:19,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 17:48:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:19,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 17:48:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:19,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 17:48:19,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:19,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 17:48:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:19,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-13 17:48:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:19,648 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-13 17:48:19,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:19,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689983300] [2022-07-13 17:48:19,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689983300] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:48:19,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:48:19,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:48:19,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529495330] [2022-07-13 17:48:19,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:48:19,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:48:19,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:19,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:48:19,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:48:19,650 INFO L87 Difference]: Start difference. First operand 15324 states and 25959 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, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:48:20,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:48:20,943 INFO L93 Difference]: Finished difference Result 40602 states and 70258 transitions. [2022-07-13 17:48:20,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:48:20,943 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, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 116 [2022-07-13 17:48:20,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:48:21,029 INFO L225 Difference]: With dead ends: 40602 [2022-07-13 17:48:21,029 INFO L226 Difference]: Without dead ends: 27366 [2022-07-13 17:48:21,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:48:21,064 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 696 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 17:48:21,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 957 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 17:48:21,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27366 states. [2022-07-13 17:48:22,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27366 to 27294. [2022-07-13 17:48:22,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27294 states, 22476 states have (on average 1.597793201637302) internal successors, (35912), 22481 states have internal predecessors, (35912), 4797 states have call successors, (4797), 16 states have call predecessors, (4797), 20 states have return successors, (5410), 4796 states have call predecessors, (5410), 4796 states have call successors, (5410) [2022-07-13 17:48:22,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27294 states to 27294 states and 46119 transitions. [2022-07-13 17:48:22,288 INFO L78 Accepts]: Start accepts. Automaton has 27294 states and 46119 transitions. Word has length 116 [2022-07-13 17:48:22,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:48:22,289 INFO L495 AbstractCegarLoop]: Abstraction has 27294 states and 46119 transitions. [2022-07-13 17:48:22,289 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, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:48:22,289 INFO L276 IsEmpty]: Start isEmpty. Operand 27294 states and 46119 transitions. [2022-07-13 17:48:22,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-13 17:48:22,310 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:22,310 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:48:22,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 17:48:22,310 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:22,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:22,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1541785178, now seen corresponding path program 1 times [2022-07-13 17:48:22,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:22,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038404446] [2022-07-13 17:48:22,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:22,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:22,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:22,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:22,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:22,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:48:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:22,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:48:22,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:22,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:48:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:22,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 17:48:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:22,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 17:48:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:22,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 17:48:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:22,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 17:48:22,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:22,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 17:48:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:22,376 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-13 17:48:22,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:22,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038404446] [2022-07-13 17:48:22,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038404446] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:48:22,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:48:22,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:48:22,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341393833] [2022-07-13 17:48:22,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:48:22,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:48:22,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:22,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:48:22,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:48:22,379 INFO L87 Difference]: Start difference. First operand 27294 states and 46119 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, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:48:24,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:48:24,394 INFO L93 Difference]: Finished difference Result 74389 states and 127857 transitions. [2022-07-13 17:48:24,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:48:24,394 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, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 117 [2022-07-13 17:48:24,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:48:24,575 INFO L225 Difference]: With dead ends: 74389 [2022-07-13 17:48:24,575 INFO L226 Difference]: Without dead ends: 49915 [2022-07-13 17:48:24,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:48:24,637 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 694 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 17:48:24,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 967 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 17:48:24,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49915 states. [2022-07-13 17:48:26,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49915 to 49843. [2022-07-13 17:48:26,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49843 states, 41310 states have (on average 1.5916969256838538) internal successors, (65753), 41315 states have internal predecessors, (65753), 8512 states have call successors, (8512), 16 states have call predecessors, (8512), 20 states have return successors, (9657), 8511 states have call predecessors, (9657), 8511 states have call successors, (9657) [2022-07-13 17:48:26,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49843 states to 49843 states and 83922 transitions. [2022-07-13 17:48:26,882 INFO L78 Accepts]: Start accepts. Automaton has 49843 states and 83922 transitions. Word has length 117 [2022-07-13 17:48:26,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:48:26,882 INFO L495 AbstractCegarLoop]: Abstraction has 49843 states and 83922 transitions. [2022-07-13 17:48:26,882 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, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:48:26,882 INFO L276 IsEmpty]: Start isEmpty. Operand 49843 states and 83922 transitions. [2022-07-13 17:48:26,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-13 17:48:26,902 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:26,902 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:48:26,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 17:48:26,902 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:26,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:26,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1856285709, now seen corresponding path program 1 times [2022-07-13 17:48:26,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:26,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11177673] [2022-07-13 17:48:26,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:26,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:26,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:26,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:26,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:26,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:26,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:26,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:48:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:26,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:48:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:26,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:48:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:26,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 17:48:26,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:26,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 17:48:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:26,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 17:48:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:26,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 17:48:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:26,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 17:48:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:26,984 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-13 17:48:26,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:26,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11177673] [2022-07-13 17:48:26,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11177673] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:48:26,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:48:26,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:48:26,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317368536] [2022-07-13 17:48:26,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:48:26,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:48:26,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:26,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:48:26,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:48:26,986 INFO L87 Difference]: Start difference. First operand 49843 states and 83922 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, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:48:30,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:48:30,386 INFO L93 Difference]: Finished difference Result 92875 states and 159988 transitions. [2022-07-13 17:48:30,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:48:30,387 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, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 118 [2022-07-13 17:48:30,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:48:30,669 INFO L225 Difference]: With dead ends: 92875 [2022-07-13 17:48:30,669 INFO L226 Difference]: Without dead ends: 92759 [2022-07-13 17:48:30,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:48:30,709 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 692 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 17:48:30,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [707 Valid, 957 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 17:48:30,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92759 states. [2022-07-13 17:48:34,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92759 to 92687. [2022-07-13 17:48:34,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92687 states, 77355 states have (on average 1.5841122099411802) internal successors, (122539), 77360 states have internal predecessors, (122539), 15311 states have call successors, (15311), 16 states have call predecessors, (15311), 20 states have return successors, (17502), 15310 states have call predecessors, (17502), 15310 states have call successors, (17502) [2022-07-13 17:48:34,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92687 states to 92687 states and 155352 transitions. [2022-07-13 17:48:34,689 INFO L78 Accepts]: Start accepts. Automaton has 92687 states and 155352 transitions. Word has length 118 [2022-07-13 17:48:34,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:48:34,689 INFO L495 AbstractCegarLoop]: Abstraction has 92687 states and 155352 transitions. [2022-07-13 17:48:34,689 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, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:48:34,689 INFO L276 IsEmpty]: Start isEmpty. Operand 92687 states and 155352 transitions. [2022-07-13 17:48:34,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-13 17:48:34,708 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:34,709 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:48:34,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 17:48:34,709 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:34,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:34,709 INFO L85 PathProgramCache]: Analyzing trace with hash -773662011, now seen corresponding path program 1 times [2022-07-13 17:48:34,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:34,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666789189] [2022-07-13 17:48:34,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:34,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:34,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:34,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:34,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:34,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:34,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:48:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:34,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:48:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:34,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:48:34,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:34,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:48:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:34,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 17:48:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:34,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 17:48:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:34,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 17:48:34,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:34,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 17:48:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:34,813 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-13 17:48:34,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:34,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666789189] [2022-07-13 17:48:34,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666789189] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:48:34,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:48:34,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:48:34,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850676293] [2022-07-13 17:48:34,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:48:34,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:48:34,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:34,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:48:34,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:48:34,815 INFO L87 Difference]: Start difference. First operand 92687 states and 155352 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:48:39,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:48:39,042 INFO L93 Difference]: Finished difference Result 93179 states and 159368 transitions. [2022-07-13 17:48:39,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 17:48:39,044 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 119 [2022-07-13 17:48:39,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:48:39,351 INFO L225 Difference]: With dead ends: 93179 [2022-07-13 17:48:39,351 INFO L226 Difference]: Without dead ends: 93073 [2022-07-13 17:48:39,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2022-07-13 17:48:39,387 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 1389 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1403 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 2518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 17:48:39,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1403 Valid, 1357 Invalid, 2518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 2109 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 17:48:39,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93073 states. [2022-07-13 17:48:43,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93073 to 92795. [2022-07-13 17:48:43,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92795 states, 77443 states have (on average 1.5839649806954792) internal successors, (122667), 77448 states have internal predecessors, (122667), 15321 states have call successors, (15321), 24 states have call predecessors, (15321), 30 states have return successors, (17515), 15322 states have call predecessors, (17515), 15319 states have call successors, (17515) [2022-07-13 17:48:43,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92795 states to 92795 states and 155503 transitions. [2022-07-13 17:48:43,523 INFO L78 Accepts]: Start accepts. Automaton has 92795 states and 155503 transitions. Word has length 119 [2022-07-13 17:48:43,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:48:43,524 INFO L495 AbstractCegarLoop]: Abstraction has 92795 states and 155503 transitions. [2022-07-13 17:48:43,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:48:43,524 INFO L276 IsEmpty]: Start isEmpty. Operand 92795 states and 155503 transitions. [2022-07-13 17:48:43,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-13 17:48:43,543 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:43,543 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:48:43,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 17:48:43,544 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:43,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:43,544 INFO L85 PathProgramCache]: Analyzing trace with hash -850075122, now seen corresponding path program 1 times [2022-07-13 17:48:43,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:43,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882947926] [2022-07-13 17:48:43,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:43,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:43,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:43,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:43,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:43,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:48:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:43,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:48:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:43,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:48:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:43,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:48:43,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:43,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 17:48:43,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:43,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 17:48:43,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:43,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 17:48:43,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:43,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 17:48:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:43,622 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-13 17:48:43,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:43,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882947926] [2022-07-13 17:48:43,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882947926] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:48:43,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:48:43,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 17:48:43,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634524959] [2022-07-13 17:48:43,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:48:43,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 17:48:43,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:43,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 17:48:43,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:48:43,624 INFO L87 Difference]: Start difference. First operand 92795 states and 155503 transitions. Second operand has 11 states, 10 states have (on average 8.3) internal successors, (83), 7 states have internal predecessors, (83), 3 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 17:48:47,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:48:47,588 INFO L93 Difference]: Finished difference Result 93224 states and 159421 transitions. [2022-07-13 17:48:47,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 17:48:47,589 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.3) internal successors, (83), 7 states have internal predecessors, (83), 3 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 120 [2022-07-13 17:48:47,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:48:47,915 INFO L225 Difference]: With dead ends: 93224 [2022-07-13 17:48:47,916 INFO L226 Difference]: Without dead ends: 93010 [2022-07-13 17:48:47,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2022-07-13 17:48:47,962 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 782 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 2646 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 2864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 2646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:48:47,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 1678 Invalid, 2864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 2646 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 17:48:48,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93010 states. [2022-07-13 17:48:51,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93010 to 92807. [2022-07-13 17:48:51,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92807 states, 77449 states have (on average 1.583919740732611) internal successors, (122673), 77458 states have internal predecessors, (122673), 15323 states have call successors, (15323), 24 states have call predecessors, (15323), 34 states have return successors, (17524), 15324 states have call predecessors, (17524), 15321 states have call successors, (17524) [2022-07-13 17:48:52,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92807 states to 92807 states and 155520 transitions. [2022-07-13 17:48:52,223 INFO L78 Accepts]: Start accepts. Automaton has 92807 states and 155520 transitions. Word has length 120 [2022-07-13 17:48:52,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:48:52,224 INFO L495 AbstractCegarLoop]: Abstraction has 92807 states and 155520 transitions. [2022-07-13 17:48:52,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.3) internal successors, (83), 7 states have internal predecessors, (83), 3 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 17:48:52,224 INFO L276 IsEmpty]: Start isEmpty. Operand 92807 states and 155520 transitions. [2022-07-13 17:48:52,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-13 17:48:52,244 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:48:52,244 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:48:52,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 17:48:52,244 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:48:52,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:48:52,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1796449099, now seen corresponding path program 1 times [2022-07-13 17:48:52,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:48:52,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21732561] [2022-07-13 17:48:52,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:48:52,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:48:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:52,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:48:52,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:52,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:48:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:52,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:48:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:52,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:48:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:52,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:48:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:52,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:48:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:52,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:48:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:52,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 17:48:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:52,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 17:48:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:52,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 17:48:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:52,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 17:48:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:48:52,338 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-13 17:48:52,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:48:52,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21732561] [2022-07-13 17:48:52,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21732561] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:48:52,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:48:52,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:48:52,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469369789] [2022-07-13 17:48:52,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:48:52,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:48:52,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:48:52,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:48:52,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:48:52,340 INFO L87 Difference]: Start difference. First operand 92807 states and 155520 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11)