./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec11_product08.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/email_spec11_product08.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 25f377b9a54c9ee2ed75c64ae9c58ce8e9d7938b6493e908dfb7e7f7a3cef80e --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 17:06:39,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 17:06:39,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 17:06:39,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 17:06:39,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 17:06:40,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 17:06:40,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 17:06:40,003 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 17:06:40,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 17:06:40,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 17:06:40,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 17:06:40,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 17:06:40,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 17:06:40,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 17:06:40,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 17:06:40,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 17:06:40,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 17:06:40,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 17:06:40,014 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 17:06:40,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 17:06:40,016 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 17:06:40,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 17:06:40,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 17:06:40,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 17:06:40,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 17:06:40,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 17:06:40,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 17:06:40,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 17:06:40,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 17:06:40,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 17:06:40,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 17:06:40,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 17:06:40,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 17:06:40,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 17:06:40,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 17:06:40,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 17:06:40,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 17:06:40,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 17:06:40,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 17:06:40,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 17:06:40,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 17:06:40,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 17:06:40,032 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 17:06:40,050 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 17:06:40,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 17:06:40,051 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 17:06:40,051 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 17:06:40,052 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 17:06:40,052 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 17:06:40,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 17:06:40,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 17:06:40,054 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 17:06:40,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 17:06:40,054 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 17:06:40,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 17:06:40,055 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 17:06:40,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 17:06:40,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 17:06:40,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 17:06:40,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 17:06:40,056 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 17:06:40,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 17:06:40,057 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 17:06:40,057 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 17:06:40,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 17:06:40,058 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 17:06:40,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 17:06:40,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:06:40,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 17:06:40,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 17:06:40,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 17:06:40,059 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 17:06:40,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 17:06:40,060 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 17:06:40,060 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 17:06:40,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 17:06:40,061 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25f377b9a54c9ee2ed75c64ae9c58ce8e9d7938b6493e908dfb7e7f7a3cef80e [2022-07-19 17:06:40,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 17:06:40,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 17:06:40,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 17:06:40,283 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 17:06:40,284 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 17:06:40,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec11_product08.cil.c [2022-07-19 17:06:40,343 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1cc441a6/487efe12b9fe4b968906863acb248214/FLAGa7b2c5733 [2022-07-19 17:06:40,808 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 17:06:40,809 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec11_product08.cil.c [2022-07-19 17:06:40,837 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1cc441a6/487efe12b9fe4b968906863acb248214/FLAGa7b2c5733 [2022-07-19 17:06:40,855 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1cc441a6/487efe12b9fe4b968906863acb248214 [2022-07-19 17:06:40,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 17:06:40,861 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 17:06:40,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 17:06:40,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 17:06:40,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 17:06:40,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:06:40" (1/1) ... [2022-07-19 17:06:40,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fb1b9a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:06:40, skipping insertion in model container [2022-07-19 17:06:40,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:06:40" (1/1) ... [2022-07-19 17:06:40,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 17:06:40,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 17:06:41,312 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_spec11_product08.cil.c[54831,54844] [2022-07-19 17:06:41,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:06:41,327 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 17:06:41,390 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_spec11_product08.cil.c[54831,54844] [2022-07-19 17:06:41,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:06:41,416 INFO L208 MainTranslator]: Completed translation [2022-07-19 17:06:41,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:06:41 WrapperNode [2022-07-19 17:06:41,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 17:06:41,418 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 17:06:41,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 17:06:41,418 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 17:06:41,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:06:41" (1/1) ... [2022-07-19 17:06:41,453 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:06:41" (1/1) ... [2022-07-19 17:06:41,510 INFO L137 Inliner]: procedures = 121, calls = 176, calls flagged for inlining = 46, calls inlined = 40, statements flattened = 735 [2022-07-19 17:06:41,514 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 17:06:41,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 17:06:41,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 17:06:41,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 17:06:41,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:06:41" (1/1) ... [2022-07-19 17:06:41,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:06:41" (1/1) ... [2022-07-19 17:06:41,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:06:41" (1/1) ... [2022-07-19 17:06:41,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:06:41" (1/1) ... [2022-07-19 17:06:41,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:06:41" (1/1) ... [2022-07-19 17:06:41,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:06:41" (1/1) ... [2022-07-19 17:06:41,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:06:41" (1/1) ... [2022-07-19 17:06:41,558 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 17:06:41,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 17:06:41,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 17:06:41,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 17:06:41,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:06:41" (1/1) ... [2022-07-19 17:06:41,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:06:41,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:06:41,598 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 17:06:41,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 17:06:41,638 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-07-19 17:06:41,639 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-07-19 17:06:41,639 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-07-19 17:06:41,639 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-07-19 17:06:41,639 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-07-19 17:06:41,640 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-07-19 17:06:41,640 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-07-19 17:06:41,641 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-07-19 17:06:41,642 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-07-19 17:06:41,642 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-07-19 17:06:41,642 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-07-19 17:06:41,642 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-07-19 17:06:41,642 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-07-19 17:06:41,642 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-07-19 17:06:41,643 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-07-19 17:06:41,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 17:06:41,643 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-07-19 17:06:41,644 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-07-19 17:06:41,644 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-07-19 17:06:41,644 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-07-19 17:06:41,644 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-07-19 17:06:41,644 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-07-19 17:06:41,644 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-07-19 17:06:41,645 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-07-19 17:06:41,645 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-07-19 17:06:41,645 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-07-19 17:06:41,645 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-07-19 17:06:41,645 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-07-19 17:06:41,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 17:06:41,646 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-07-19 17:06:41,646 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-07-19 17:06:41,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 17:06:41,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 17:06:41,833 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 17:06:41,835 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 17:06:42,260 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 17:06:42,267 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 17:06:42,267 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 17:06:42,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:06:42 BoogieIcfgContainer [2022-07-19 17:06:42,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 17:06:42,270 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 17:06:42,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 17:06:42,273 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 17:06:42,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 05:06:40" (1/3) ... [2022-07-19 17:06:42,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a8e1ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:06:42, skipping insertion in model container [2022-07-19 17:06:42,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:06:41" (2/3) ... [2022-07-19 17:06:42,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a8e1ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:06:42, skipping insertion in model container [2022-07-19 17:06:42,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:06:42" (3/3) ... [2022-07-19 17:06:42,276 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product08.cil.c [2022-07-19 17:06:42,287 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 17:06:42,288 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 17:06:42,328 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 17:06:42,333 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@59a3fd5e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5b858fa8 [2022-07-19 17:06:42,334 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 17:06:42,338 INFO L276 IsEmpty]: Start isEmpty. Operand has 231 states, 181 states have (on average 1.5303867403314917) internal successors, (277), 183 states have internal predecessors, (277), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-07-19 17:06:42,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-19 17:06:42,351 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:06:42,352 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:06:42,352 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:06:42,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:06:42,357 INFO L85 PathProgramCache]: Analyzing trace with hash -338962039, now seen corresponding path program 1 times [2022-07-19 17:06:42,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:06:42,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439532353] [2022-07-19 17:06:42,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:06:42,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:06:42,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:42,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:06:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:42,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:06:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:42,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:06:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:42,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 17:06:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:42,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 17:06:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:42,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 17:06:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:42,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 17:06:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:42,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 17:06:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:42,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 17:06:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:42,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 17:06:42,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:42,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 17:06:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:42,765 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-19 17:06:42,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:06:42,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439532353] [2022-07-19 17:06:42,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439532353] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:06:42,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125366761] [2022-07-19 17:06:42,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:06:42,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:06:42,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:06:42,771 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 17:06:42,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 17:06:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:43,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 914 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-19 17:06:43,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:06:43,039 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-19 17:06:43,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:06:43,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125366761] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:06:43,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:06:43,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-07-19 17:06:43,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343783373] [2022-07-19 17:06:43,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:06:43,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 17:06:43,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:06:43,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 17:06:43,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:06:43,080 INFO L87 Difference]: Start difference. First operand has 231 states, 181 states have (on average 1.5303867403314917) internal successors, (277), 183 states have internal predecessors, (277), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 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) [2022-07-19 17:06:43,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:06:43,118 INFO L93 Difference]: Finished difference Result 308 states and 444 transitions. [2022-07-19 17:06:43,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 17:06:43,122 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 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 87 [2022-07-19 17:06:43,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:06:43,132 INFO L225 Difference]: With dead ends: 308 [2022-07-19 17:06:43,132 INFO L226 Difference]: Without dead ends: 224 [2022-07-19 17:06:43,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:06:43,139 INFO L413 NwaCegarLoop]: 341 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, 341 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:06:43,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:06:43,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-07-19 17:06:43,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2022-07-19 17:06:43,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 175 states have (on average 1.52) internal successors, (266), 176 states have internal predecessors, (266), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-19 17:06:43,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 333 transitions. [2022-07-19 17:06:43,196 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 333 transitions. Word has length 87 [2022-07-19 17:06:43,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:06:43,197 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 333 transitions. [2022-07-19 17:06:43,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 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) [2022-07-19 17:06:43,198 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 333 transitions. [2022-07-19 17:06:43,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-19 17:06:43,211 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:06:43,211 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:06:43,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 17:06:43,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-19 17:06:43,432 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:06:43,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:06:43,432 INFO L85 PathProgramCache]: Analyzing trace with hash 752983182, now seen corresponding path program 1 times [2022-07-19 17:06:43,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:06:43,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706266559] [2022-07-19 17:06:43,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:06:43,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:06:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:43,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:06:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:43,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:06:43,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:43,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:06:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:43,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 17:06:43,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:43,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 17:06:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:43,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 17:06:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:43,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 17:06:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:43,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:06:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:43,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 17:06:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:43,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 17:06:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:43,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 17:06:43,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:43,695 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-19 17:06:43,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:06:43,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706266559] [2022-07-19 17:06:43,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706266559] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:06:43,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676241907] [2022-07-19 17:06:43,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:06:43,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:06:43,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:06:43,700 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 17:06:43,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 17:06:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:43,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 17:06:43,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:06:43,971 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-19 17:06:43,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:06:43,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676241907] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:06:43,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:06:43,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-19 17:06:43,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134120751] [2022-07-19 17:06:43,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:06:43,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:06:43,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:06:43,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:06:43,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:06:43,974 INFO L87 Difference]: Start difference. First operand 224 states and 333 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2022-07-19 17:06:44,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:06:44,005 INFO L93 Difference]: Finished difference Result 298 states and 425 transitions. [2022-07-19 17:06:44,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:06:44,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 88 [2022-07-19 17:06:44,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:06:44,020 INFO L225 Difference]: With dead ends: 298 [2022-07-19 17:06:44,021 INFO L226 Difference]: Without dead ends: 227 [2022-07-19 17:06:44,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:06:44,023 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 1 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:06:44,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 660 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:06:44,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-07-19 17:06:44,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 226. [2022-07-19 17:06:44,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 177 states have (on average 1.5141242937853108) internal successors, (268), 178 states have internal predecessors, (268), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-19 17:06:44,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 335 transitions. [2022-07-19 17:06:44,062 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 335 transitions. Word has length 88 [2022-07-19 17:06:44,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:06:44,063 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 335 transitions. [2022-07-19 17:06:44,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2022-07-19 17:06:44,063 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 335 transitions. [2022-07-19 17:06:44,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-19 17:06:44,066 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:06:44,066 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:06:44,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-19 17:06:44,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-19 17:06:44,267 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:06:44,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:06:44,268 INFO L85 PathProgramCache]: Analyzing trace with hash -2071153164, now seen corresponding path program 1 times [2022-07-19 17:06:44,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:06:44,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977686418] [2022-07-19 17:06:44,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:06:44,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:06:44,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:44,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:06:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:44,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:06:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:44,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:06:44,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:44,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 17:06:44,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:44,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 17:06:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:44,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 17:06:44,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:44,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 17:06:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:44,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 17:06:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:44,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 17:06:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:44,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 17:06:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:44,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 17:06:44,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:44,418 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 17:06:44,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:06:44,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977686418] [2022-07-19 17:06:44,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977686418] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:06:44,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746022143] [2022-07-19 17:06:44,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:06:44,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:06:44,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:06:44,425 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 17:06:44,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 17:06:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:44,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 17:06:44,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:06:44,692 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-19 17:06:44,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:06:44,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746022143] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:06:44,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:06:44,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-19 17:06:44,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575712494] [2022-07-19 17:06:44,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:06:44,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:06:44,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:06:44,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:06:44,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:06:44,697 INFO L87 Difference]: Start difference. First operand 226 states and 335 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2022-07-19 17:06:44,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:06:44,755 INFO L93 Difference]: Finished difference Result 482 states and 729 transitions. [2022-07-19 17:06:44,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:06:44,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 97 [2022-07-19 17:06:44,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:06:44,762 INFO L225 Difference]: With dead ends: 482 [2022-07-19 17:06:44,763 INFO L226 Difference]: Without dead ends: 283 [2022-07-19 17:06:44,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:06:44,768 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 107 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:06:44,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 637 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:06:44,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-07-19 17:06:44,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 275. [2022-07-19 17:06:44,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 215 states have (on average 1.5348837209302326) internal successors, (330), 216 states have internal predecessors, (330), 45 states have call successors, (45), 14 states have call predecessors, (45), 14 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-07-19 17:06:44,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 419 transitions. [2022-07-19 17:06:44,809 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 419 transitions. Word has length 97 [2022-07-19 17:06:44,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:06:44,809 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 419 transitions. [2022-07-19 17:06:44,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2022-07-19 17:06:44,810 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 419 transitions. [2022-07-19 17:06:44,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-19 17:06:44,813 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:06:44,813 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:06:44,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 17:06:45,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:06:45,020 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:06:45,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:06:45,020 INFO L85 PathProgramCache]: Analyzing trace with hash -681084901, now seen corresponding path program 1 times [2022-07-19 17:06:45,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:06:45,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953564103] [2022-07-19 17:06:45,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:06:45,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:06:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:45,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:06:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:45,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:06:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:45,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:06:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:45,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 17:06:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:45,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 17:06:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:45,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 17:06:45,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:45,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 17:06:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:45,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 17:06:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:45,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 17:06:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:45,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 17:06:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:45,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 17:06:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:45,162 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 17:06:45,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:06:45,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953564103] [2022-07-19 17:06:45,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953564103] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:06:45,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023910835] [2022-07-19 17:06:45,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:06:45,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:06:45,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:06:45,164 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 17:06:45,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 17:06:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:45,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 17:06:45,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:06:45,431 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 17:06:45,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:06:45,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023910835] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:06:45,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:06:45,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-07-19 17:06:45,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262869451] [2022-07-19 17:06:45,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:06:45,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 17:06:45,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:06:45,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 17:06:45,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-19 17:06:45,434 INFO L87 Difference]: Start difference. First operand 275 states and 419 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-07-19 17:06:45,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:06:45,498 INFO L93 Difference]: Finished difference Result 541 states and 828 transitions. [2022-07-19 17:06:45,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 17:06:45,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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 98 [2022-07-19 17:06:45,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:06:45,503 INFO L225 Difference]: With dead ends: 541 [2022-07-19 17:06:45,503 INFO L226 Difference]: Without dead ends: 277 [2022-07-19 17:06:45,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:06:45,507 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 125 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:06:45,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1151 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:06:45,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-07-19 17:06:45,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2022-07-19 17:06:45,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 216 states have (on average 1.5324074074074074) internal successors, (331), 218 states have internal predecessors, (331), 45 states have call successors, (45), 14 states have call predecessors, (45), 15 states have return successors, (46), 44 states have call predecessors, (46), 44 states have call successors, (46) [2022-07-19 17:06:45,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 422 transitions. [2022-07-19 17:06:45,543 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 422 transitions. Word has length 98 [2022-07-19 17:06:45,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:06:45,544 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 422 transitions. [2022-07-19 17:06:45,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-07-19 17:06:45,545 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 422 transitions. [2022-07-19 17:06:45,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-19 17:06:45,549 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:06:45,549 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:06:45,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 17:06:45,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:06:45,774 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:06:45,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:06:45,775 INFO L85 PathProgramCache]: Analyzing trace with hash -900581444, now seen corresponding path program 1 times [2022-07-19 17:06:45,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:06:45,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611366662] [2022-07-19 17:06:45,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:06:45,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:06:45,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:45,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:06:45,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:45,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:06:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:45,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:06:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:45,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:06:45,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:45,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 17:06:45,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:45,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 17:06:45,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:45,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 17:06:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:45,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 17:06:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:45,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 17:06:45,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:45,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 17:06:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:45,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 17:06:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:45,907 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-19 17:06:45,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:06:45,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611366662] [2022-07-19 17:06:45,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611366662] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:06:45,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192126800] [2022-07-19 17:06:45,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:06:45,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:06:45,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:06:45,910 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 17:06:45,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 17:06:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:46,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 950 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 17:06:46,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:06:46,172 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 17:06:46,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:06:46,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192126800] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:06:46,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:06:46,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-19 17:06:46,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038581369] [2022-07-19 17:06:46,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:06:46,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 17:06:46,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:06:46,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 17:06:46,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-19 17:06:46,175 INFO L87 Difference]: Start difference. First operand 277 states and 422 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-19 17:06:46,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:06:46,229 INFO L93 Difference]: Finished difference Result 543 states and 833 transitions. [2022-07-19 17:06:46,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 17:06:46,229 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 99 [2022-07-19 17:06:46,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:06:46,231 INFO L225 Difference]: With dead ends: 543 [2022-07-19 17:06:46,231 INFO L226 Difference]: Without dead ends: 279 [2022-07-19 17:06:46,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:06:46,233 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 124 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:06:46,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1140 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:06:46,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-07-19 17:06:46,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2022-07-19 17:06:46,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 217 states have (on average 1.5299539170506913) internal successors, (332), 220 states have internal predecessors, (332), 45 states have call successors, (45), 14 states have call predecessors, (45), 16 states have return successors, (51), 44 states have call predecessors, (51), 44 states have call successors, (51) [2022-07-19 17:06:46,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 428 transitions. [2022-07-19 17:06:46,248 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 428 transitions. Word has length 99 [2022-07-19 17:06:46,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:06:46,248 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 428 transitions. [2022-07-19 17:06:46,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-19 17:06:46,249 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 428 transitions. [2022-07-19 17:06:46,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-19 17:06:46,250 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:06:46,250 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:06:46,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 17:06:46,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:06:46,475 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:06:46,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:06:46,475 INFO L85 PathProgramCache]: Analyzing trace with hash -2035618973, now seen corresponding path program 1 times [2022-07-19 17:06:46,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:06:46,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830411159] [2022-07-19 17:06:46,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:06:46,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:06:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:46,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:06:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:46,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:06:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:46,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:06:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:46,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:06:46,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:46,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:06:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:46,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 17:06:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:46,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 17:06:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:46,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 17:06:46,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:46,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 17:06:46,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:46,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 17:06:46,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:46,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 17:06:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:46,583 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 17:06:46,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:06:46,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830411159] [2022-07-19 17:06:46,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830411159] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:06:46,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:06:46,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 17:06:46,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029106826] [2022-07-19 17:06:46,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:06:46,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 17:06:46,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:06:46,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 17:06:46,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:06:46,586 INFO L87 Difference]: Start difference. First operand 279 states and 428 transitions. Second operand has 9 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-19 17:06:47,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:06:47,555 INFO L93 Difference]: Finished difference Result 601 states and 925 transitions. [2022-07-19 17:06:47,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 17:06:47,556 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (13), 6 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 [2022-07-19 17:06:47,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:06:47,559 INFO L225 Difference]: With dead ends: 601 [2022-07-19 17:06:47,559 INFO L226 Difference]: Without dead ends: 345 [2022-07-19 17:06:47,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 17:06:47,560 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 678 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:06:47,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 1179 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 17:06:47,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-07-19 17:06:47,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 279. [2022-07-19 17:06:47,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 217 states have (on average 1.5299539170506913) internal successors, (332), 220 states have internal predecessors, (332), 45 states have call successors, (45), 14 states have call predecessors, (45), 16 states have return successors, (50), 44 states have call predecessors, (50), 44 states have call successors, (50) [2022-07-19 17:06:47,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 427 transitions. [2022-07-19 17:06:47,597 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 427 transitions. Word has length 100 [2022-07-19 17:06:47,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:06:47,597 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 427 transitions. [2022-07-19 17:06:47,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-19 17:06:47,598 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 427 transitions. [2022-07-19 17:06:47,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 17:06:47,599 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:06:47,600 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] [2022-07-19 17:06:47,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 17:06:47,600 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:06:47,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:06:47,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1299983974, now seen corresponding path program 2 times [2022-07-19 17:06:47,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:06:47,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201737560] [2022-07-19 17:06:47,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:06:47,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:06:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:47,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:06:47,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:47,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:06:47,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:47,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:06:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:47,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:06:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:47,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:06:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:47,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:06:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:47,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 17:06:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:47,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 17:06:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:47,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 17:06:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:47,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 17:06:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:47,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 17:06:47,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:47,690 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 17:06:47,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:06:47,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201737560] [2022-07-19 17:06:47,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201737560] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:06:47,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:06:47,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 17:06:47,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547438056] [2022-07-19 17:06:47,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:06:47,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 17:06:47,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:06:47,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 17:06:47,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:06:47,692 INFO L87 Difference]: Start difference. First operand 279 states and 427 transitions. Second operand has 9 states, 8 states have (on average 8.25) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-19 17:06:48,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:06:48,660 INFO L93 Difference]: Finished difference Result 603 states and 928 transitions. [2022-07-19 17:06:48,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 17:06:48,661 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.25) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 6 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 101 [2022-07-19 17:06:48,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:06:48,664 INFO L225 Difference]: With dead ends: 603 [2022-07-19 17:06:48,664 INFO L226 Difference]: Without dead ends: 347 [2022-07-19 17:06:48,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 17:06:48,666 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 672 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:06:48,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 1182 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 17:06:48,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-07-19 17:06:48,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 281. [2022-07-19 17:06:48,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 218 states have (on average 1.5275229357798166) internal successors, (333), 222 states have internal predecessors, (333), 45 states have call successors, (45), 14 states have call predecessors, (45), 17 states have return successors, (52), 44 states have call predecessors, (52), 44 states have call successors, (52) [2022-07-19 17:06:48,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 430 transitions. [2022-07-19 17:06:48,686 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 430 transitions. Word has length 101 [2022-07-19 17:06:48,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:06:48,686 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 430 transitions. [2022-07-19 17:06:48,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.25) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-19 17:06:48,687 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 430 transitions. [2022-07-19 17:06:48,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-19 17:06:48,688 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:06:48,689 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:06:48,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 17:06:48,689 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:06:48,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:06:48,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1942025310, now seen corresponding path program 1 times [2022-07-19 17:06:48,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:06:48,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292134952] [2022-07-19 17:06:48,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:06:48,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:06:48,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:48,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:06:48,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:48,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:06:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:48,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:06:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:48,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:06:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:48,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:06:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:48,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:06:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:48,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 17:06:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:48,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 17:06:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:48,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 17:06:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:48,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 17:06:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:48,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 17:06:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:48,807 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-19 17:06:48,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:06:48,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292134952] [2022-07-19 17:06:48,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292134952] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:06:48,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:06:48,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 17:06:48,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855297929] [2022-07-19 17:06:48,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:06:48,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 17:06:48,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:06:48,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 17:06:48,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-19 17:06:48,809 INFO L87 Difference]: Start difference. First operand 281 states and 430 transitions. Second operand has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-19 17:06:50,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:06:50,070 INFO L93 Difference]: Finished difference Result 601 states and 923 transitions. [2022-07-19 17:06:50,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:06:50,071 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (13), 6 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 [2022-07-19 17:06:50,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:06:50,073 INFO L225 Difference]: With dead ends: 601 [2022-07-19 17:06:50,073 INFO L226 Difference]: Without dead ends: 347 [2022-07-19 17:06:50,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-07-19 17:06:50,075 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 785 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 1864 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 2149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:06:50,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 1476 Invalid, 2149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1864 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 17:06:50,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-07-19 17:06:50,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 281. [2022-07-19 17:06:50,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 218 states have (on average 1.5275229357798166) internal successors, (333), 222 states have internal predecessors, (333), 45 states have call successors, (45), 14 states have call predecessors, (45), 17 states have return successors, (51), 44 states have call predecessors, (51), 44 states have call successors, (51) [2022-07-19 17:06:50,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 429 transitions. [2022-07-19 17:06:50,107 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 429 transitions. Word has length 102 [2022-07-19 17:06:50,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:06:50,108 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 429 transitions. [2022-07-19 17:06:50,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-19 17:06:50,108 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 429 transitions. [2022-07-19 17:06:50,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-19 17:06:50,110 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:06:50,110 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] [2022-07-19 17:06:50,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 17:06:50,110 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:06:50,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:06:50,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1612619593, now seen corresponding path program 2 times [2022-07-19 17:06:50,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:06:50,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359409509] [2022-07-19 17:06:50,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:06:50,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:06:50,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:50,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:06:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:50,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:06:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:50,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:06:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:50,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:06:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:50,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:06:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:50,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:06:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:50,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 17:06:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:50,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 17:06:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:50,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 17:06:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:50,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 17:06:50,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:50,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 17:06:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:50,222 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-19 17:06:50,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:06:50,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359409509] [2022-07-19 17:06:50,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359409509] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:06:50,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:06:50,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 17:06:50,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014727231] [2022-07-19 17:06:50,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:06:50,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 17:06:50,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:06:50,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 17:06:50,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-19 17:06:50,225 INFO L87 Difference]: Start difference. First operand 281 states and 429 transitions. Second operand has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 8 states have internal predecessors, (71), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-19 17:06:51,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:06:51,478 INFO L93 Difference]: Finished difference Result 603 states and 929 transitions. [2022-07-19 17:06:51,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:06:51,479 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 8 states have internal predecessors, (71), 4 states have call successors, (13), 6 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 103 [2022-07-19 17:06:51,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:06:51,481 INFO L225 Difference]: With dead ends: 603 [2022-07-19 17:06:51,481 INFO L226 Difference]: Without dead ends: 349 [2022-07-19 17:06:51,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-07-19 17:06:51,483 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 779 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 1911 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 2191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 1911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:06:51,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 1479 Invalid, 2191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 1911 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 17:06:51,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-07-19 17:06:51,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 283. [2022-07-19 17:06:51,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 219 states have (on average 1.5251141552511416) internal successors, (334), 224 states have internal predecessors, (334), 45 states have call successors, (45), 14 states have call predecessors, (45), 18 states have return successors, (56), 44 states have call predecessors, (56), 44 states have call successors, (56) [2022-07-19 17:06:51,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 435 transitions. [2022-07-19 17:06:51,501 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 435 transitions. Word has length 103 [2022-07-19 17:06:51,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:06:51,502 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 435 transitions. [2022-07-19 17:06:51,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 8 states have internal predecessors, (71), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-19 17:06:51,502 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 435 transitions. [2022-07-19 17:06:51,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-19 17:06:51,504 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:06:51,504 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:06:51,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 17:06:51,504 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:06:51,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:06:51,505 INFO L85 PathProgramCache]: Analyzing trace with hash 367097945, now seen corresponding path program 1 times [2022-07-19 17:06:51,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:06:51,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161829013] [2022-07-19 17:06:51,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:06:51,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:06:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:51,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:06:51,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:51,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:06:51,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:51,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:06:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:51,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:06:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:51,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:06:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:51,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:06:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:51,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 17:06:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:51,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 17:06:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:51,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 17:06:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:51,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 17:06:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:51,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 17:06:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:51,610 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-19 17:06:51,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:06:51,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161829013] [2022-07-19 17:06:51,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161829013] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:06:51,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160298128] [2022-07-19 17:06:51,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:06:51,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:06:51,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:06:51,616 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 17:06:51,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 17:06:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:51,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 17:06:51,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:06:51,887 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:06:51,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 17:06:51,968 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:06:51,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160298128] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 17:06:51,969 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 17:06:51,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2022-07-19 17:06:51,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082960054] [2022-07-19 17:06:51,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 17:06:51,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-19 17:06:51,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:06:51,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-19 17:06:51,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-19 17:06:51,972 INFO L87 Difference]: Start difference. First operand 283 states and 435 transitions. Second operand has 15 states, 14 states have (on average 8.357142857142858) internal successors, (117), 11 states have internal predecessors, (117), 4 states have call successors, (27), 6 states have call predecessors, (27), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-19 17:06:54,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:06:54,321 INFO L93 Difference]: Finished difference Result 1282 states and 2157 transitions. [2022-07-19 17:06:54,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 17:06:54,323 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 8.357142857142858) internal successors, (117), 11 states have internal predecessors, (117), 4 states have call successors, (27), 6 states have call predecessors, (27), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 104 [2022-07-19 17:06:54,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:06:54,328 INFO L225 Difference]: With dead ends: 1282 [2022-07-19 17:06:54,328 INFO L226 Difference]: Without dead ends: 1030 [2022-07-19 17:06:54,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2022-07-19 17:06:54,331 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 2472 mSDsluCounter, 3087 mSDsCounter, 0 mSdLazyCounter, 3525 mSolverCounterSat, 1026 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2474 SdHoareTripleChecker+Valid, 3645 SdHoareTripleChecker+Invalid, 4551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1026 IncrementalHoareTripleChecker+Valid, 3525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:06:54,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2474 Valid, 3645 Invalid, 4551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1026 Valid, 3525 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-19 17:06:54,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2022-07-19 17:06:54,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 611. [2022-07-19 17:06:54,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 483 states have (on average 1.5838509316770186) internal successors, (765), 488 states have internal predecessors, (765), 109 states have call successors, (109), 14 states have call predecessors, (109), 18 states have return successors, (130), 108 states have call predecessors, (130), 108 states have call successors, (130) [2022-07-19 17:06:54,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1004 transitions. [2022-07-19 17:06:54,377 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1004 transitions. Word has length 104 [2022-07-19 17:06:54,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:06:54,378 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 1004 transitions. [2022-07-19 17:06:54,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 8.357142857142858) internal successors, (117), 11 states have internal predecessors, (117), 4 states have call successors, (27), 6 states have call predecessors, (27), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-19 17:06:54,378 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1004 transitions. [2022-07-19 17:06:54,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-19 17:06:54,381 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:06:54,381 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:06:54,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 17:06:54,595 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 [2022-07-19 17:06:54,595 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:06:54,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:06:54,596 INFO L85 PathProgramCache]: Analyzing trace with hash -810993489, now seen corresponding path program 1 times [2022-07-19 17:06:54,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:06:54,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370012082] [2022-07-19 17:06:54,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:06:54,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:06:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:54,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:06:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:54,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:06:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:54,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:06:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:54,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:06:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:54,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:06:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:54,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:06:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:54,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 17:06:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:54,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 17:06:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:54,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 17:06:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:54,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 17:06:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:54,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 17:06:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:54,702 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:06:54,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:06:54,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370012082] [2022-07-19 17:06:54,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370012082] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:06:54,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:06:54,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:06:54,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666845689] [2022-07-19 17:06:54,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:06:54,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:06:54,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:06:54,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:06:54,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:06:54,704 INFO L87 Difference]: Start difference. First operand 611 states and 1004 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:06:55,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:06:55,438 INFO L93 Difference]: Finished difference Result 1518 states and 2560 transitions. [2022-07-19 17:06:55,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:06:55,438 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 6 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 107 [2022-07-19 17:06:55,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:06:55,444 INFO L225 Difference]: With dead ends: 1518 [2022-07-19 17:06:55,444 INFO L226 Difference]: Without dead ends: 985 [2022-07-19 17:06:55,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:06:55,447 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 669 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:06:55,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 1049 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 17:06:55,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2022-07-19 17:06:55,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 911. [2022-07-19 17:06:55,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 719 states have (on average 1.599443671766342) internal successors, (1150), 724 states have internal predecessors, (1150), 173 states have call successors, (173), 14 states have call predecessors, (173), 18 states have return successors, (204), 172 states have call predecessors, (204), 172 states have call successors, (204) [2022-07-19 17:06:55,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1527 transitions. [2022-07-19 17:06:55,508 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1527 transitions. Word has length 107 [2022-07-19 17:06:55,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:06:55,509 INFO L495 AbstractCegarLoop]: Abstraction has 911 states and 1527 transitions. [2022-07-19 17:06:55,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:06:55,509 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1527 transitions. [2022-07-19 17:06:55,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-19 17:06:55,512 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:06:55,513 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:06:55,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 17:06:55,513 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:06:55,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:06:55,513 INFO L85 PathProgramCache]: Analyzing trace with hash 2062729237, now seen corresponding path program 1 times [2022-07-19 17:06:55,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:06:55,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759274917] [2022-07-19 17:06:55,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:06:55,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:06:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:55,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:06:55,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:55,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:06:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:55,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:06:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:55,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:06:55,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:55,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:06:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:55,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:06:55,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:55,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 17:06:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:55,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 17:06:55,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:55,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 17:06:55,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:55,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 17:06:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:55,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 17:06:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:55,615 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:06:55,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:06:55,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759274917] [2022-07-19 17:06:55,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759274917] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:06:55,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:06:55,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:06:55,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314537898] [2022-07-19 17:06:55,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:06:55,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:06:55,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:06:55,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:06:55,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:06:55,617 INFO L87 Difference]: Start difference. First operand 911 states and 1527 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:06:56,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:06:56,465 INFO L93 Difference]: Finished difference Result 2258 states and 3840 transitions. [2022-07-19 17:06:56,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:06:56,466 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 6 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 108 [2022-07-19 17:06:56,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:06:56,474 INFO L225 Difference]: With dead ends: 2258 [2022-07-19 17:06:56,474 INFO L226 Difference]: Without dead ends: 1478 [2022-07-19 17:06:56,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:06:56,478 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 665 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:06:56,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1020 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 17:06:56,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2022-07-19 17:06:56,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1404. [2022-07-19 17:06:56,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1117 states have (on average 1.6042972247090421) internal successors, (1792), 1122 states have internal predecessors, (1792), 268 states have call successors, (268), 14 states have call predecessors, (268), 18 states have return successors, (299), 267 states have call predecessors, (299), 267 states have call successors, (299) [2022-07-19 17:06:56,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 2359 transitions. [2022-07-19 17:06:56,576 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 2359 transitions. Word has length 108 [2022-07-19 17:06:56,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:06:56,577 INFO L495 AbstractCegarLoop]: Abstraction has 1404 states and 2359 transitions. [2022-07-19 17:06:56,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:06:56,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 2359 transitions. [2022-07-19 17:06:56,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-19 17:06:56,582 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:06:56,582 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:06:56,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 17:06:56,583 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:06:56,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:06:56,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1726810685, now seen corresponding path program 1 times [2022-07-19 17:06:56,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:06:56,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056033877] [2022-07-19 17:06:56,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:06:56,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:06:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:56,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:06:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:56,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:06:56,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:56,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:06:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:56,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:06:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:56,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:06:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:56,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:06:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:56,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 17:06:56,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:56,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 17:06:56,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:56,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 17:06:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:56,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 17:06:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:56,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 17:06:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:56,656 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:06:56,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:06:56,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056033877] [2022-07-19 17:06:56,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056033877] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:06:56,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:06:56,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:06:56,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98486504] [2022-07-19 17:06:56,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:06:56,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:06:56,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:06:56,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:06:56,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:06:56,658 INFO L87 Difference]: Start difference. First operand 1404 states and 2359 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:06:57,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:06:57,516 INFO L93 Difference]: Finished difference Result 3360 states and 5758 transitions. [2022-07-19 17:06:57,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:06:57,517 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 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 [2022-07-19 17:06:57,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:06:57,530 INFO L225 Difference]: With dead ends: 3360 [2022-07-19 17:06:57,530 INFO L226 Difference]: Without dead ends: 2222 [2022-07-19 17:06:57,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:06:57,537 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 666 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:06:57,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1018 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 17:06:57,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2022-07-19 17:06:57,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 2148. [2022-07-19 17:06:57,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2148 states, 1738 states have (on average 1.6081703107019563) internal successors, (2795), 1743 states have internal predecessors, (2795), 391 states have call successors, (391), 14 states have call predecessors, (391), 18 states have return successors, (438), 390 states have call predecessors, (438), 390 states have call successors, (438) [2022-07-19 17:06:57,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2148 states to 2148 states and 3624 transitions. [2022-07-19 17:06:57,696 INFO L78 Accepts]: Start accepts. Automaton has 2148 states and 3624 transitions. Word has length 109 [2022-07-19 17:06:57,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:06:57,696 INFO L495 AbstractCegarLoop]: Abstraction has 2148 states and 3624 transitions. [2022-07-19 17:06:57,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:06:57,697 INFO L276 IsEmpty]: Start isEmpty. Operand 2148 states and 3624 transitions. [2022-07-19 17:06:57,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-19 17:06:57,702 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:06:57,703 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:06:57,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 17:06:57,703 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:06:57,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:06:57,704 INFO L85 PathProgramCache]: Analyzing trace with hash -2113108746, now seen corresponding path program 1 times [2022-07-19 17:06:57,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:06:57,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549134965] [2022-07-19 17:06:57,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:06:57,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:06:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:57,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:06:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:57,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:06:57,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:57,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:06:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:57,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:06:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:57,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:06:57,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:57,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:06:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:57,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 17:06:57,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:57,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 17:06:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:57,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 17:06:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:57,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 17:06:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:57,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 17:06:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:57,775 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:06:57,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:06:57,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549134965] [2022-07-19 17:06:57,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549134965] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:06:57,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:06:57,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:06:57,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732984610] [2022-07-19 17:06:57,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:06:57,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:06:57,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:06:57,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:06:57,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:06:57,778 INFO L87 Difference]: Start difference. First operand 2148 states and 3624 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:06:58,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:06:58,736 INFO L93 Difference]: Finished difference Result 5069 states and 8738 transitions. [2022-07-19 17:06:58,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:06:58,737 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 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 [2022-07-19 17:06:58,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:06:58,754 INFO L225 Difference]: With dead ends: 5069 [2022-07-19 17:06:58,754 INFO L226 Difference]: Without dead ends: 3406 [2022-07-19 17:06:58,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:06:58,760 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 661 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 17:06:58,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 1021 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 17:06:58,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3406 states. [2022-07-19 17:06:59,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3406 to 3332. [2022-07-19 17:06:59,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3332 states, 2743 states have (on average 1.6102807145461173) internal successors, (4417), 2748 states have internal predecessors, (4417), 570 states have call successors, (570), 14 states have call predecessors, (570), 18 states have return successors, (643), 569 states have call predecessors, (643), 569 states have call successors, (643) [2022-07-19 17:06:59,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3332 states to 3332 states and 5630 transitions. [2022-07-19 17:06:59,029 INFO L78 Accepts]: Start accepts. Automaton has 3332 states and 5630 transitions. Word has length 110 [2022-07-19 17:06:59,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:06:59,029 INFO L495 AbstractCegarLoop]: Abstraction has 3332 states and 5630 transitions. [2022-07-19 17:06:59,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:06:59,030 INFO L276 IsEmpty]: Start isEmpty. Operand 3332 states and 5630 transitions. [2022-07-19 17:06:59,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-19 17:06:59,036 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:06:59,036 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:06:59,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 17:06:59,037 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:06:59,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:06:59,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1350938745, now seen corresponding path program 1 times [2022-07-19 17:06:59,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:06:59,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030864494] [2022-07-19 17:06:59,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:06:59,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:06:59,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:59,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:06:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:59,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:06:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:59,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:06:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:59,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:06:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:59,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:06:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:59,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:06:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:59,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 17:06:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:59,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 17:06:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:59,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 17:06:59,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:59,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 17:06:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:59,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 17:06:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:06:59,108 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:06:59,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:06:59,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030864494] [2022-07-19 17:06:59,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030864494] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:06:59,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:06:59,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:06:59,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553195388] [2022-07-19 17:06:59,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:06:59,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:06:59,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:06:59,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:06:59,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:06:59,110 INFO L87 Difference]: Start difference. First operand 3332 states and 5630 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:07:00,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:07:00,080 INFO L93 Difference]: Finished difference Result 8142 states and 14054 transitions. [2022-07-19 17:07:00,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:07:00,081 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 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 [2022-07-19 17:07:00,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:07:00,141 INFO L225 Difference]: With dead ends: 8142 [2022-07-19 17:07:00,141 INFO L226 Difference]: Without dead ends: 5547 [2022-07-19 17:07:00,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:07:00,153 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 661 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 17:07:00,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [677 Valid, 1053 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 17:07:00,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5547 states. [2022-07-19 17:07:00,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5547 to 5473. [2022-07-19 17:07:00,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5473 states, 4508 states have (on average 1.60226264418811) internal successors, (7223), 4513 states have internal predecessors, (7223), 946 states have call successors, (946), 14 states have call predecessors, (946), 18 states have return successors, (1063), 945 states have call predecessors, (1063), 945 states have call successors, (1063) [2022-07-19 17:07:00,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5473 states to 5473 states and 9232 transitions. [2022-07-19 17:07:00,584 INFO L78 Accepts]: Start accepts. Automaton has 5473 states and 9232 transitions. Word has length 111 [2022-07-19 17:07:00,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:07:00,584 INFO L495 AbstractCegarLoop]: Abstraction has 5473 states and 9232 transitions. [2022-07-19 17:07:00,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:07:00,585 INFO L276 IsEmpty]: Start isEmpty. Operand 5473 states and 9232 transitions. [2022-07-19 17:07:00,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-19 17:07:00,594 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:07:00,594 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:07:00,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 17:07:00,595 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:07:00,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:07:00,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1613475142, now seen corresponding path program 1 times [2022-07-19 17:07:00,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:07:00,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542858180] [2022-07-19 17:07:00,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:00,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:07:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:00,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:07:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:00,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:07:00,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:00,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:07:00,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:00,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:07:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:00,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:07:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:00,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:07:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:00,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 17:07:00,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:00,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 17:07:00,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:00,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 17:07:00,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:00,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 17:07:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:00,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 17:07:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:00,684 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:07:00,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:07:00,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542858180] [2022-07-19 17:07:00,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542858180] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:07:00,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:07:00,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:07:00,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119405898] [2022-07-19 17:07:00,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:07:00,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:07:00,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:07:00,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:07:00,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:07:00,686 INFO L87 Difference]: Start difference. First operand 5473 states and 9232 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:07:01,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:07:01,748 INFO L93 Difference]: Finished difference Result 13564 states and 23355 transitions. [2022-07-19 17:07:01,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:07:01,748 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 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 [2022-07-19 17:07:01,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:07:01,792 INFO L225 Difference]: With dead ends: 13564 [2022-07-19 17:07:01,793 INFO L226 Difference]: Without dead ends: 9230 [2022-07-19 17:07:01,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:07:01,809 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 660 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:07:01,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 1021 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 17:07:01,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9230 states. [2022-07-19 17:07:02,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9230 to 9156. [2022-07-19 17:07:02,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9156 states, 7585 states have (on average 1.5992089650626236) internal successors, (12130), 7590 states have internal predecessors, (12130), 1552 states have call successors, (1552), 14 states have call predecessors, (1552), 18 states have return successors, (1747), 1551 states have call predecessors, (1747), 1551 states have call successors, (1747) [2022-07-19 17:07:02,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9156 states to 9156 states and 15429 transitions. [2022-07-19 17:07:02,530 INFO L78 Accepts]: Start accepts. Automaton has 9156 states and 15429 transitions. Word has length 112 [2022-07-19 17:07:02,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:07:02,531 INFO L495 AbstractCegarLoop]: Abstraction has 9156 states and 15429 transitions. [2022-07-19 17:07:02,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:07:02,532 INFO L276 IsEmpty]: Start isEmpty. Operand 9156 states and 15429 transitions. [2022-07-19 17:07:02,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-19 17:07:02,544 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:07:02,544 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:07:02,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 17:07:02,545 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:07:02,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:07:02,545 INFO L85 PathProgramCache]: Analyzing trace with hash 386562555, now seen corresponding path program 1 times [2022-07-19 17:07:02,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:07:02,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164796301] [2022-07-19 17:07:02,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:02,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:07:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:02,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:07:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:02,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:07:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:02,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:07:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:02,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:07:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:02,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:07:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:02,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:07:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:02,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 17:07:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:02,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 17:07:02,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:02,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 17:07:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:02,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 17:07:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:02,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 17:07:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:02,617 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:07:02,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:07:02,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164796301] [2022-07-19 17:07:02,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164796301] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:07:02,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:07:02,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:07:02,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228879210] [2022-07-19 17:07:02,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:07:02,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:07:02,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:07:02,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:07:02,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:07:02,620 INFO L87 Difference]: Start difference. First operand 9156 states and 15429 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:07:03,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:07:03,941 INFO L93 Difference]: Finished difference Result 23748 states and 40796 transitions. [2022-07-19 17:07:03,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:07:03,942 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 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 [2022-07-19 17:07:03,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:07:03,996 INFO L225 Difference]: With dead ends: 23748 [2022-07-19 17:07:03,996 INFO L226 Difference]: Without dead ends: 16183 [2022-07-19 17:07:04,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:07:04,021 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 656 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:07:04,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 1055 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 17:07:04,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16183 states. [2022-07-19 17:07:05,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16183 to 16109. [2022-07-19 17:07:05,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16109 states, 13335 states have (on average 1.589801274840645) internal successors, (21200), 13340 states have internal predecessors, (21200), 2755 states have call successors, (2755), 14 states have call predecessors, (2755), 18 states have return successors, (3094), 2754 states have call predecessors, (3094), 2754 states have call successors, (3094) [2022-07-19 17:07:05,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16109 states to 16109 states and 27049 transitions. [2022-07-19 17:07:05,080 INFO L78 Accepts]: Start accepts. Automaton has 16109 states and 27049 transitions. Word has length 113 [2022-07-19 17:07:05,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:07:05,081 INFO L495 AbstractCegarLoop]: Abstraction has 16109 states and 27049 transitions. [2022-07-19 17:07:05,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:07:05,081 INFO L276 IsEmpty]: Start isEmpty. Operand 16109 states and 27049 transitions. [2022-07-19 17:07:05,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-19 17:07:05,095 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:07:05,095 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:07:05,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 17:07:05,095 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:07:05,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:07:05,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1247882437, now seen corresponding path program 1 times [2022-07-19 17:07:05,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:07:05,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528886251] [2022-07-19 17:07:05,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:05,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:07:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:05,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:07:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:05,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:07:05,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:05,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:07:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:05,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:07:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:05,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:07:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:05,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:07:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:05,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 17:07:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:05,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 17:07:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:05,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 17:07:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:05,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 17:07:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:05,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-19 17:07:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:05,167 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:07:05,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:07:05,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528886251] [2022-07-19 17:07:05,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528886251] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:07:05,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:07:05,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:07:05,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320175449] [2022-07-19 17:07:05,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:07:05,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:07:05,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:07:05,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:07:05,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:07:05,170 INFO L87 Difference]: Start difference. First operand 16109 states and 27049 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:07:07,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:07:07,033 INFO L93 Difference]: Finished difference Result 42714 states and 73193 transitions. [2022-07-19 17:07:07,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:07:07,034 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 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 [2022-07-19 17:07:07,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:07:07,148 INFO L225 Difference]: With dead ends: 42714 [2022-07-19 17:07:07,148 INFO L226 Difference]: Without dead ends: 28838 [2022-07-19 17:07:07,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:07:07,186 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 653 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:07:07,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [668 Valid, 1025 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 17:07:07,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28838 states. [2022-07-19 17:07:09,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28838 to 28764. [2022-07-19 17:07:09,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28764 states, 23951 states have (on average 1.5851947726608493) internal successors, (37967), 23956 states have internal predecessors, (37967), 4794 states have call successors, (4794), 14 states have call predecessors, (4794), 18 states have return successors, (5407), 4793 states have call predecessors, (5407), 4793 states have call successors, (5407) [2022-07-19 17:07:09,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28764 states to 28764 states and 48168 transitions. [2022-07-19 17:07:09,225 INFO L78 Accepts]: Start accepts. Automaton has 28764 states and 48168 transitions. Word has length 114 [2022-07-19 17:07:09,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:07:09,225 INFO L495 AbstractCegarLoop]: Abstraction has 28764 states and 48168 transitions. [2022-07-19 17:07:09,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:07:09,226 INFO L276 IsEmpty]: Start isEmpty. Operand 28764 states and 48168 transitions. [2022-07-19 17:07:09,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-19 17:07:09,242 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:07:09,242 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:07:09,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 17:07:09,242 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:07:09,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:07:09,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1042607139, now seen corresponding path program 1 times [2022-07-19 17:07:09,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:07:09,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17311269] [2022-07-19 17:07:09,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:09,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:07:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:09,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:07:09,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:09,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:07:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:09,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:07:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:09,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:07:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:09,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:07:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:09,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:07:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:09,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 17:07:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:09,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 17:07:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:09,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 17:07:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:09,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 17:07:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:09,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 17:07:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:09,336 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:07:09,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:07:09,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17311269] [2022-07-19 17:07:09,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17311269] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:07:09,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:07:09,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:07:09,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323912895] [2022-07-19 17:07:09,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:07:09,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:07:09,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:07:09,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:07:09,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:07:09,339 INFO L87 Difference]: Start difference. First operand 28764 states and 48168 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:07:12,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:07:12,035 INFO L93 Difference]: Finished difference Result 78476 states and 133557 transitions. [2022-07-19 17:07:12,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:07:12,036 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 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 [2022-07-19 17:07:12,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:07:12,255 INFO L225 Difference]: With dead ends: 78476 [2022-07-19 17:07:12,256 INFO L226 Difference]: Without dead ends: 52717 [2022-07-19 17:07:12,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:07:12,345 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 652 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:07:12,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 1018 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 17:07:12,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52717 states. [2022-07-19 17:07:15,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52717 to 52643. [2022-07-19 17:07:15,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52643 states, 44115 states have (on average 1.5792814235520798) internal successors, (69670), 44120 states have internal predecessors, (69670), 8509 states have call successors, (8509), 14 states have call predecessors, (8509), 18 states have return successors, (9654), 8508 states have call predecessors, (9654), 8508 states have call successors, (9654) [2022-07-19 17:07:15,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52643 states to 52643 states and 87833 transitions. [2022-07-19 17:07:15,720 INFO L78 Accepts]: Start accepts. Automaton has 52643 states and 87833 transitions. Word has length 115 [2022-07-19 17:07:15,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:07:15,721 INFO L495 AbstractCegarLoop]: Abstraction has 52643 states and 87833 transitions. [2022-07-19 17:07:15,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:07:15,721 INFO L276 IsEmpty]: Start isEmpty. Operand 52643 states and 87833 transitions. [2022-07-19 17:07:15,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-19 17:07:15,741 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:07:15,741 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:07:15,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 17:07:15,742 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:07:15,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:07:15,742 INFO L85 PathProgramCache]: Analyzing trace with hash 374275547, now seen corresponding path program 1 times [2022-07-19 17:07:15,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:07:15,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551433808] [2022-07-19 17:07:15,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:15,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:07:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:15,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:07:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:15,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:07:15,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:15,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:07:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:15,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:07:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:15,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:07:15,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:15,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:07:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:16,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 17:07:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:16,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 17:07:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:16,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 17:07:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:16,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 17:07:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:16,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 17:07:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:16,183 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:07:16,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:07:16,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551433808] [2022-07-19 17:07:16,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551433808] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:07:16,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:07:16,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:07:16,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625078632] [2022-07-19 17:07:16,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:07:16,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:07:16,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:07:16,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:07:16,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:07:16,186 INFO L87 Difference]: Start difference. First operand 52643 states and 87833 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:07:20,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:07:20,499 INFO L93 Difference]: Finished difference Result 98247 states and 167487 transitions. [2022-07-19 17:07:20,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:07:20,499 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 6 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 [2022-07-19 17:07:20,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:07:20,900 INFO L225 Difference]: With dead ends: 98247 [2022-07-19 17:07:20,900 INFO L226 Difference]: Without dead ends: 98176 [2022-07-19 17:07:20,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:07:20,956 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 650 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:07:20,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 1020 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 17:07:21,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98176 states. [2022-07-19 17:07:25,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98176 to 98102. [2022-07-19 17:07:26,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98102 states, 82775 states have (on average 1.5719359710057383) internal successors, (130117), 82780 states have internal predecessors, (130117), 15308 states have call successors, (15308), 14 states have call predecessors, (15308), 18 states have return successors, (17499), 15307 states have call predecessors, (17499), 15307 states have call successors, (17499) [2022-07-19 17:07:26,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98102 states to 98102 states and 162924 transitions. [2022-07-19 17:07:26,300 INFO L78 Accepts]: Start accepts. Automaton has 98102 states and 162924 transitions. Word has length 116 [2022-07-19 17:07:26,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:07:26,301 INFO L495 AbstractCegarLoop]: Abstraction has 98102 states and 162924 transitions. [2022-07-19 17:07:26,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:07:26,301 INFO L276 IsEmpty]: Start isEmpty. Operand 98102 states and 162924 transitions. [2022-07-19 17:07:26,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-19 17:07:26,316 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:07:26,316 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:07:26,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 17:07:26,317 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:07:26,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:07:26,317 INFO L85 PathProgramCache]: Analyzing trace with hash 974880476, now seen corresponding path program 1 times [2022-07-19 17:07:26,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:07:26,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042728546] [2022-07-19 17:07:26,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:26,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:07:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:26,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:07:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:26,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:07:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:26,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:07:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:26,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:07:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:26,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:07:26,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:26,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:07:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:26,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 17:07:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:26,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 17:07:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:26,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 17:07:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:26,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 17:07:26,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:26,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-19 17:07:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:26,785 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-19 17:07:26,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:07:26,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042728546] [2022-07-19 17:07:26,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042728546] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:07:26,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453482835] [2022-07-19 17:07:26,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:26,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:07:26,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:07:26,788 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 17:07:26,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 17:07:26,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:26,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-19 17:07:26,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:07:27,230 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-19 17:07:27,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:07:27,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453482835] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:07:27,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:07:27,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [19] total 29 [2022-07-19 17:07:27,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899438108] [2022-07-19 17:07:27,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:07:27,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 17:07:27,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:07:27,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 17:07:27,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=744, Unknown=0, NotChecked=0, Total=812 [2022-07-19 17:07:27,233 INFO L87 Difference]: Start difference. First operand 98102 states and 162924 transitions. Second operand has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 10 states have internal predecessors, (87), 5 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2022-07-19 17:07:31,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:07:31,404 INFO L93 Difference]: Finished difference Result 98322 states and 163196 transitions. [2022-07-19 17:07:31,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 17:07:31,405 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 10 states have internal predecessors, (87), 5 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 117 [2022-07-19 17:07:31,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:07:31,712 INFO L225 Difference]: With dead ends: 98322 [2022-07-19 17:07:31,712 INFO L226 Difference]: Without dead ends: 98257 [2022-07-19 17:07:31,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=197, Invalid=1609, Unknown=0, NotChecked=0, Total=1806 [2022-07-19 17:07:31,753 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 511 mSDsluCounter, 3160 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 3515 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 17:07:31,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 3515 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 17:07:31,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98257 states. [2022-07-19 17:07:36,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98257 to 98202. [2022-07-19 17:07:36,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98202 states, 82854 states have (on average 1.5716923745383446) internal successors, (130221), 82860 states have internal predecessors, (130221), 15318 states have call successors, (15318), 22 states have call predecessors, (15318), 29 states have return successors, (17512), 15319 states have call predecessors, (17512), 15316 states have call successors, (17512) [2022-07-19 17:07:37,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98202 states to 98202 states and 163051 transitions. [2022-07-19 17:07:37,257 INFO L78 Accepts]: Start accepts. Automaton has 98202 states and 163051 transitions. Word has length 117 [2022-07-19 17:07:37,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:07:37,257 INFO L495 AbstractCegarLoop]: Abstraction has 98202 states and 163051 transitions. [2022-07-19 17:07:37,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 10 states have internal predecessors, (87), 5 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2022-07-19 17:07:37,257 INFO L276 IsEmpty]: Start isEmpty. Operand 98202 states and 163051 transitions. [2022-07-19 17:07:37,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-19 17:07:37,271 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:07:37,271 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:07:37,289 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-19 17:07:37,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:07:37,472 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:07:37,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:07:37,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1192113793, now seen corresponding path program 1 times [2022-07-19 17:07:37,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:07:37,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336254552] [2022-07-19 17:07:37,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:37,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:07:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:37,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:07:37,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:37,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:07:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:37,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:07:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:37,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:07:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:37,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:07:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:37,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:07:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:37,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 17:07:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:37,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 17:07:37,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:37,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 17:07:37,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:37,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 17:07:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:37,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 17:07:37,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:37,569 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:07:37,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:07:37,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336254552] [2022-07-19 17:07:37,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336254552] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:07:37,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:07:37,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 17:07:37,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812251270] [2022-07-19 17:07:37,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:07:37,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 17:07:37,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:07:37,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 17:07:37,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:07:37,571 INFO L87 Difference]: Start difference. First operand 98202 states and 163051 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11)