./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec8_product16.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/email_spec8_product16.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 8a7679b9688c44fd84543e8b684d34e72b379518d806d27199a245477e871776 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 04:55:37,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 04:55:37,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 04:55:37,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 04:55:37,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 04:55:37,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 04:55:37,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 04:55:37,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 04:55:37,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 04:55:37,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 04:55:37,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 04:55:37,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 04:55:37,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 04:55:37,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 04:55:37,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 04:55:37,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 04:55:37,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 04:55:37,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 04:55:37,109 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 04:55:37,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 04:55:37,118 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 04:55:37,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 04:55:37,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 04:55:37,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 04:55:37,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 04:55:37,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 04:55:37,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 04:55:37,127 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 04:55:37,128 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 04:55:37,129 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 04:55:37,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 04:55:37,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 04:55:37,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 04:55:37,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 04:55:37,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 04:55:37,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 04:55:37,134 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 04:55:37,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 04:55:37,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 04:55:37,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 04:55:37,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 04:55:37,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 04:55:37,145 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 04:55:37,182 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 04:55:37,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 04:55:37,183 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 04:55:37,183 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 04:55:37,184 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 04:55:37,184 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 04:55:37,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 04:55:37,185 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 04:55:37,185 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 04:55:37,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 04:55:37,187 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 04:55:37,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 04:55:37,187 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 04:55:37,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 04:55:37,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 04:55:37,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 04:55:37,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 04:55:37,188 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 04:55:37,188 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 04:55:37,188 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 04:55:37,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 04:55:37,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 04:55:37,189 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 04:55:37,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 04:55:37,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 04:55:37,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 04:55:37,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 04:55:37,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 04:55:37,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 04:55:37,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 04:55:37,191 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 04:55:37,191 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 04:55:37,191 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 04:55:37,192 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a7679b9688c44fd84543e8b684d34e72b379518d806d27199a245477e871776 [2022-07-21 04:55:37,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 04:55:37,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 04:55:37,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 04:55:37,527 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 04:55:37,528 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 04:55:37,530 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec8_product16.cil.c [2022-07-21 04:55:37,582 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e15194fc8/cc1080c8c76a436a96bc17ab0a9b1a15/FLAGf5f4dc9f1 [2022-07-21 04:55:38,152 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 04:55:38,153 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec8_product16.cil.c [2022-07-21 04:55:38,180 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e15194fc8/cc1080c8c76a436a96bc17ab0a9b1a15/FLAGf5f4dc9f1 [2022-07-21 04:55:38,425 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e15194fc8/cc1080c8c76a436a96bc17ab0a9b1a15 [2022-07-21 04:55:38,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 04:55:38,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 04:55:38,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 04:55:38,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 04:55:38,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 04:55:38,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:55:38" (1/1) ... [2022-07-21 04:55:38,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f0690a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:38, skipping insertion in model container [2022-07-21 04:55:38,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:55:38" (1/1) ... [2022-07-21 04:55:38,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 04:55:38,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 04:55:39,080 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec8_product16.cil.c[51682,51695] [2022-07-21 04:55:39,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 04:55:39,144 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 04:55:39,207 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec8_product16.cil.c[51682,51695] [2022-07-21 04:55:39,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 04:55:39,251 INFO L208 MainTranslator]: Completed translation [2022-07-21 04:55:39,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:39 WrapperNode [2022-07-21 04:55:39,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 04:55:39,254 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 04:55:39,254 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 04:55:39,254 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 04:55:39,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:39" (1/1) ... [2022-07-21 04:55:39,297 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:39" (1/1) ... [2022-07-21 04:55:39,369 INFO L137 Inliner]: procedures = 126, calls = 201, calls flagged for inlining = 57, calls inlined = 52, statements flattened = 994 [2022-07-21 04:55:39,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 04:55:39,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 04:55:39,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 04:55:39,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 04:55:39,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:39" (1/1) ... [2022-07-21 04:55:39,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:39" (1/1) ... [2022-07-21 04:55:39,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:39" (1/1) ... [2022-07-21 04:55:39,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:39" (1/1) ... [2022-07-21 04:55:39,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:39" (1/1) ... [2022-07-21 04:55:39,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:39" (1/1) ... [2022-07-21 04:55:39,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:39" (1/1) ... [2022-07-21 04:55:39,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 04:55:39,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 04:55:39,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 04:55:39,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 04:55:39,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:39" (1/1) ... [2022-07-21 04:55:39,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 04:55:39,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:55:39,497 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) [2022-07-21 04:55:39,524 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 [2022-07-21 04:55:39,543 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-07-21 04:55:39,544 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-07-21 04:55:39,544 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-07-21 04:55:39,544 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-07-21 04:55:39,544 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-07-21 04:55:39,544 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-07-21 04:55:39,544 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-07-21 04:55:39,545 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-07-21 04:55:39,545 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-07-21 04:55:39,545 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-07-21 04:55:39,546 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-07-21 04:55:39,546 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-07-21 04:55:39,546 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-07-21 04:55:39,546 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-07-21 04:55:39,546 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-07-21 04:55:39,546 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-07-21 04:55:39,546 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-07-21 04:55:39,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 04:55:39,547 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-07-21 04:55:39,547 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-07-21 04:55:39,547 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-07-21 04:55:39,547 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-07-21 04:55:39,547 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-07-21 04:55:39,547 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-07-21 04:55:39,548 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-07-21 04:55:39,548 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-07-21 04:55:39,548 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-07-21 04:55:39,548 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-07-21 04:55:39,548 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-07-21 04:55:39,549 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-07-21 04:55:39,549 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-07-21 04:55:39,549 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-07-21 04:55:39,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 04:55:39,549 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-07-21 04:55:39,550 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-07-21 04:55:39,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 04:55:39,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 04:55:39,805 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 04:55:39,806 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 04:55:40,481 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 04:55:40,508 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 04:55:40,509 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 04:55:40,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:55:40 BoogieIcfgContainer [2022-07-21 04:55:40,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 04:55:40,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 04:55:40,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 04:55:40,517 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 04:55:40,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:55:38" (1/3) ... [2022-07-21 04:55:40,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29928594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:55:40, skipping insertion in model container [2022-07-21 04:55:40,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:39" (2/3) ... [2022-07-21 04:55:40,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29928594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:55:40, skipping insertion in model container [2022-07-21 04:55:40,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:55:40" (3/3) ... [2022-07-21 04:55:40,521 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec8_product16.cil.c [2022-07-21 04:55:40,534 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 04:55:40,535 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 04:55:40,599 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 04:55:40,606 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@32e8fcf9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4ac18ee1 [2022-07-21 04:55:40,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 04:55:40,616 INFO L276 IsEmpty]: Start isEmpty. Operand has 299 states, 236 states have (on average 1.5338983050847457) internal successors, (362), 240 states have internal predecessors, (362), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-07-21 04:55:40,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-21 04:55:40,642 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:55:40,643 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, 1] [2022-07-21 04:55:40,646 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:55:40,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:55:40,653 INFO L85 PathProgramCache]: Analyzing trace with hash -806898450, now seen corresponding path program 1 times [2022-07-21 04:55:40,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:55:40,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519004260] [2022-07-21 04:55:40,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:55:40,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:55:40,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:41,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:55:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:41,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:55:41,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:41,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:55:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:41,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 04:55:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:41,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 04:55:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:41,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 04:55:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:41,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 04:55:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:41,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 04:55:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:41,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:55:41,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:41,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 04:55:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:41,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 04:55:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:41,135 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-21 04:55:41,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:55:41,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519004260] [2022-07-21 04:55:41,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519004260] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:55:41,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839998026] [2022-07-21 04:55:41,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:55:41,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:55:41,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:55:41,139 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) [2022-07-21 04:55:41,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 04:55:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:41,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 958 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 04:55:41,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:55:41,446 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 04:55:41,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:55:41,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839998026] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:55:41,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:55:41,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-07-21 04:55:41,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230193244] [2022-07-21 04:55:41,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:55:41,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 04:55:41,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:55:41,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 04:55:41,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:55:41,481 INFO L87 Difference]: Start difference. First operand has 299 states, 236 states have (on average 1.5338983050847457) internal successors, (362), 240 states have internal predecessors, (362), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 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) [2022-07-21 04:55:41,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:55:41,527 INFO L93 Difference]: Finished difference Result 444 states and 658 transitions. [2022-07-21 04:55:41,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 04:55:41,529 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 89 [2022-07-21 04:55:41,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:55:41,548 INFO L225 Difference]: With dead ends: 444 [2022-07-21 04:55:41,549 INFO L226 Difference]: Without dead ends: 292 [2022-07-21 04:55:41,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:55:41,557 INFO L413 NwaCegarLoop]: 448 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, 448 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 [2022-07-21 04:55:41,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:55:41,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-07-21 04:55:41,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2022-07-21 04:55:41,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 230 states have (on average 1.5260869565217392) internal successors, (351), 233 states have internal predecessors, (351), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-07-21 04:55:41,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 440 transitions. [2022-07-21 04:55:41,612 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 440 transitions. Word has length 89 [2022-07-21 04:55:41,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:55:41,614 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 440 transitions. [2022-07-21 04:55:41,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 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) [2022-07-21 04:55:41,615 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 440 transitions. [2022-07-21 04:55:41,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-21 04:55:41,619 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:55:41,619 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, 1, 1] [2022-07-21 04:55:41,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 04:55:41,845 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 [2022-07-21 04:55:41,845 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:55:41,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:55:41,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1177822227, now seen corresponding path program 1 times [2022-07-21 04:55:41,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:55:41,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434509924] [2022-07-21 04:55:41,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:55:41,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:55:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:41,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:55:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:41,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:55:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:41,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:55:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:41,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 04:55:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:41,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 04:55:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:41,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 04:55:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:41,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 04:55:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:41,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:55:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:41,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:55:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:41,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 04:55:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:41,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 04:55:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:41,992 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-21 04:55:41,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:55:41,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434509924] [2022-07-21 04:55:41,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434509924] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:55:41,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026949423] [2022-07-21 04:55:41,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:55:41,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:55:41,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:55:41,995 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) [2022-07-21 04:55:42,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 04:55:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:42,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 04:55:42,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:55:42,278 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 04:55:42,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:55:42,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026949423] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:55:42,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:55:42,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-21 04:55:42,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064129241] [2022-07-21 04:55:42,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:55:42,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 04:55:42,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:55:42,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 04:55:42,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:55:42,284 INFO L87 Difference]: Start difference. First operand 292 states and 440 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2022-07-21 04:55:42,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:55:42,330 INFO L93 Difference]: Finished difference Result 434 states and 639 transitions. [2022-07-21 04:55:42,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 04:55:42,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 90 [2022-07-21 04:55:42,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:55:42,340 INFO L225 Difference]: With dead ends: 434 [2022-07-21 04:55:42,340 INFO L226 Difference]: Without dead ends: 295 [2022-07-21 04:55:42,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:55:42,343 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 1 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 874 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 [2022-07-21 04:55:42,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 874 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:55:42,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-07-21 04:55:42,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 294. [2022-07-21 04:55:42,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 232 states have (on average 1.521551724137931) internal successors, (353), 235 states have internal predecessors, (353), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-07-21 04:55:42,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 442 transitions. [2022-07-21 04:55:42,367 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 442 transitions. Word has length 90 [2022-07-21 04:55:42,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:55:42,367 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 442 transitions. [2022-07-21 04:55:42,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2022-07-21 04:55:42,368 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 442 transitions. [2022-07-21 04:55:42,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-21 04:55:42,370 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:55:42,370 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] [2022-07-21 04:55:42,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 04:55:42,593 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 [2022-07-21 04:55:42,594 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:55:42,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:55:42,595 INFO L85 PathProgramCache]: Analyzing trace with hash 213599068, now seen corresponding path program 1 times [2022-07-21 04:55:42,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:55:42,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871746125] [2022-07-21 04:55:42,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:55:42,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:55:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:42,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:55:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:42,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:55:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:42,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:55:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:42,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 04:55:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:42,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 04:55:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:42,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 04:55:42,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:42,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 04:55:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:42,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 04:55:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:42,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 04:55:42,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:42,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 04:55:42,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:42,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 04:55:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:42,724 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 04:55:42,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:55:42,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871746125] [2022-07-21 04:55:42,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871746125] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:55:42,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224767697] [2022-07-21 04:55:42,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:55:42,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:55:42,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:55:42,727 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) [2022-07-21 04:55:42,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 04:55:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:42,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:55:42,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:55:43,001 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 04:55:43,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:55:43,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224767697] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:55:43,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:55:43,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-21 04:55:43,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657107920] [2022-07-21 04:55:43,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:55:43,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 04:55:43,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:55:43,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 04:55:43,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:55:43,008 INFO L87 Difference]: Start difference. First operand 294 states and 442 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2022-07-21 04:55:43,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:55:43,044 INFO L93 Difference]: Finished difference Result 618 states and 943 transitions. [2022-07-21 04:55:43,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 04:55:43,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 96 [2022-07-21 04:55:43,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:55:43,049 INFO L225 Difference]: With dead ends: 618 [2022-07-21 04:55:43,049 INFO L226 Difference]: Without dead ends: 351 [2022-07-21 04:55:43,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:55:43,054 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 107 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 858 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 [2022-07-21 04:55:43,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 858 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:55:43,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-07-21 04:55:43,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 343. [2022-07-21 04:55:43,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 270 states have (on average 1.537037037037037) internal successors, (415), 273 states have internal predecessors, (415), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-07-21 04:55:43,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 526 transitions. [2022-07-21 04:55:43,098 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 526 transitions. Word has length 96 [2022-07-21 04:55:43,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:55:43,098 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 526 transitions. [2022-07-21 04:55:43,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2022-07-21 04:55:43,098 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 526 transitions. [2022-07-21 04:55:43,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-21 04:55:43,101 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:55:43,101 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] [2022-07-21 04:55:43,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 04:55:43,323 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 [2022-07-21 04:55:43,324 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:55:43,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:55:43,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1191934709, now seen corresponding path program 1 times [2022-07-21 04:55:43,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:55:43,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283631801] [2022-07-21 04:55:43,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:55:43,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:55:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:43,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:55:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:43,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:55:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:43,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:55:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:43,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 04:55:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:43,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 04:55:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:43,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 04:55:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:43,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 04:55:43,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:43,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 04:55:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:43,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 04:55:43,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:43,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 04:55:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:43,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 04:55:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:43,451 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 04:55:43,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:55:43,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283631801] [2022-07-21 04:55:43,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283631801] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:55:43,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942978142] [2022-07-21 04:55:43,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:55:43,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:55:43,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:55:43,453 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) [2022-07-21 04:55:43,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 04:55:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:43,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 04:55:43,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:55:43,751 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-21 04:55:43,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:55:43,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942978142] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:55:43,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:55:43,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-07-21 04:55:43,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751468190] [2022-07-21 04:55:43,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:55:43,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:55:43,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:55:43,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:55:43,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:55:43,754 INFO L87 Difference]: Start difference. First operand 343 states and 526 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 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) [2022-07-21 04:55:43,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:55:43,828 INFO L93 Difference]: Finished difference Result 677 states and 1042 transitions. [2022-07-21 04:55:43,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:55:43,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2022-07-21 04:55:43,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:55:43,833 INFO L225 Difference]: With dead ends: 677 [2022-07-21 04:55:43,833 INFO L226 Difference]: Without dead ends: 345 [2022-07-21 04:55:43,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:55:43,839 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 125 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1579 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 [2022-07-21 04:55:43,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1579 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:55:43,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-07-21 04:55:43,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2022-07-21 04:55:43,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 271 states have (on average 1.5350553505535056) internal successors, (416), 275 states have internal predecessors, (416), 56 states have call successors, (56), 16 states have call predecessors, (56), 17 states have return successors, (57), 55 states have call predecessors, (57), 55 states have call successors, (57) [2022-07-21 04:55:43,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 529 transitions. [2022-07-21 04:55:43,864 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 529 transitions. Word has length 97 [2022-07-21 04:55:43,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:55:43,865 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 529 transitions. [2022-07-21 04:55:43,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 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) [2022-07-21 04:55:43,865 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 529 transitions. [2022-07-21 04:55:43,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-21 04:55:43,867 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:55:43,867 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] [2022-07-21 04:55:43,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 04:55:44,091 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 [2022-07-21 04:55:44,092 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:55:44,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:55:44,092 INFO L85 PathProgramCache]: Analyzing trace with hash -398998019, now seen corresponding path program 1 times [2022-07-21 04:55:44,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:55:44,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570473602] [2022-07-21 04:55:44,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:55:44,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:55:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:44,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:55:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:44,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:55:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:44,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:55:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:44,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:55:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:44,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 04:55:44,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:44,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:55:44,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:44,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 04:55:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:44,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:55:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:44,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 04:55:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:44,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 04:55:44,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:44,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 04:55:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:44,230 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-21 04:55:44,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:55:44,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570473602] [2022-07-21 04:55:44,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570473602] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:55:44,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809060394] [2022-07-21 04:55:44,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:55:44,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:55:44,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:55:44,232 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) [2022-07-21 04:55:44,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 04:55:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:44,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 981 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 04:55:44,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:55:44,511 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-21 04:55:44,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:55:44,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809060394] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:55:44,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:55:44,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-21 04:55:44,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764418239] [2022-07-21 04:55:44,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:55:44,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:55:44,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:55:44,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:55:44,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:55:44,513 INFO L87 Difference]: Start difference. First operand 345 states and 529 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2022-07-21 04:55:44,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:55:44,572 INFO L93 Difference]: Finished difference Result 679 states and 1047 transitions. [2022-07-21 04:55:44,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:55:44,573 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 98 [2022-07-21 04:55:44,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:55:44,575 INFO L225 Difference]: With dead ends: 679 [2022-07-21 04:55:44,575 INFO L226 Difference]: Without dead ends: 347 [2022-07-21 04:55:44,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-21 04:55:44,577 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 124 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1568 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 [2022-07-21 04:55:44,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1568 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:55:44,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-07-21 04:55:44,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2022-07-21 04:55:44,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 272 states have (on average 1.5330882352941178) internal successors, (417), 277 states have internal predecessors, (417), 56 states have call successors, (56), 16 states have call predecessors, (56), 18 states have return successors, (62), 55 states have call predecessors, (62), 55 states have call successors, (62) [2022-07-21 04:55:44,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 535 transitions. [2022-07-21 04:55:44,594 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 535 transitions. Word has length 98 [2022-07-21 04:55:44,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:55:44,594 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 535 transitions. [2022-07-21 04:55:44,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2022-07-21 04:55:44,595 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 535 transitions. [2022-07-21 04:55:44,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-21 04:55:44,597 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:55:44,597 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] [2022-07-21 04:55:44,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 04:55:44,819 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 [2022-07-21 04:55:44,820 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:55:44,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:55:44,820 INFO L85 PathProgramCache]: Analyzing trace with hash 262721501, now seen corresponding path program 1 times [2022-07-21 04:55:44,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:55:44,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122983100] [2022-07-21 04:55:44,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:55:44,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:55:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:44,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:55:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:44,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:55:44,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:44,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:55:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:44,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:55:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:44,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:55:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:44,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 04:55:44,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:44,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 04:55:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:44,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:55:44,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:44,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 04:55:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:44,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 04:55:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:44,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 04:55:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:44,925 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 04:55:44,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:55:44,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122983100] [2022-07-21 04:55:44,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122983100] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:55:44,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:55:44,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:55:44,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832755] [2022-07-21 04:55:44,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:55:44,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:55:44,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:55:44,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:55:44,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:55:44,928 INFO L87 Difference]: Start difference. First operand 347 states and 535 transitions. Second operand has 9 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 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) [2022-07-21 04:55:46,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:55:46,538 INFO L93 Difference]: Finished difference Result 819 states and 1261 transitions. [2022-07-21 04:55:46,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 04:55:46,538 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 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 99 [2022-07-21 04:55:46,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:55:46,542 INFO L225 Difference]: With dead ends: 819 [2022-07-21 04:55:46,543 INFO L226 Difference]: Without dead ends: 495 [2022-07-21 04:55:46,544 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 [2022-07-21 04:55:46,545 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 1023 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1893 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 2258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 1893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:55:46,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1040 Valid, 1371 Invalid, 2258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 1893 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 04:55:46,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2022-07-21 04:55:46,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 347. [2022-07-21 04:55:46,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 272 states have (on average 1.5330882352941178) internal successors, (417), 277 states have internal predecessors, (417), 56 states have call successors, (56), 16 states have call predecessors, (56), 18 states have return successors, (61), 55 states have call predecessors, (61), 55 states have call successors, (61) [2022-07-21 04:55:46,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 534 transitions. [2022-07-21 04:55:46,575 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 534 transitions. Word has length 99 [2022-07-21 04:55:46,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:55:46,576 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 534 transitions. [2022-07-21 04:55:46,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 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) [2022-07-21 04:55:46,576 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 534 transitions. [2022-07-21 04:55:46,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-21 04:55:46,578 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:55:46,578 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] [2022-07-21 04:55:46,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 04:55:46,579 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:55:46,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:55:46,579 INFO L85 PathProgramCache]: Analyzing trace with hash 963094467, now seen corresponding path program 2 times [2022-07-21 04:55:46,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:55:46,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073278914] [2022-07-21 04:55:46,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:55:46,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:55:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:46,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:55:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:46,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:55:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:46,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:55:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:46,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:55:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:46,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:55:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:46,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:55:46,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:46,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 04:55:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:46,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 04:55:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:46,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:55:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:46,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 04:55:46,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:46,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 04:55:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:46,680 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 04:55:46,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:55:46,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073278914] [2022-07-21 04:55:46,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073278914] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:55:46,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:55:46,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:55:46,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493632255] [2022-07-21 04:55:46,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:55:46,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:55:46,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:55:46,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:55:46,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:55:46,682 INFO L87 Difference]: Start difference. First operand 347 states and 534 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) [2022-07-21 04:55:48,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:55:48,257 INFO L93 Difference]: Finished difference Result 821 states and 1264 transitions. [2022-07-21 04:55:48,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 04:55:48,257 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 [2022-07-21 04:55:48,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:55:48,261 INFO L225 Difference]: With dead ends: 821 [2022-07-21 04:55:48,261 INFO L226 Difference]: Without dead ends: 497 [2022-07-21 04:55:48,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 04:55:48,263 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 1018 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1908 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 2268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 1908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:55:48,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 1372 Invalid, 2268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 1908 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 04:55:48,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-07-21 04:55:48,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 349. [2022-07-21 04:55:48,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 273 states have (on average 1.531135531135531) internal successors, (418), 279 states have internal predecessors, (418), 56 states have call successors, (56), 16 states have call predecessors, (56), 19 states have return successors, (63), 55 states have call predecessors, (63), 55 states have call successors, (63) [2022-07-21 04:55:48,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 537 transitions. [2022-07-21 04:55:48,297 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 537 transitions. Word has length 100 [2022-07-21 04:55:48,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:55:48,299 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 537 transitions. [2022-07-21 04:55:48,299 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) [2022-07-21 04:55:48,299 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 537 transitions. [2022-07-21 04:55:48,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-21 04:55:48,301 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:55:48,301 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] [2022-07-21 04:55:48,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 04:55:48,302 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:55:48,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:55:48,302 INFO L85 PathProgramCache]: Analyzing trace with hash -868146014, now seen corresponding path program 1 times [2022-07-21 04:55:48,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:55:48,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834550376] [2022-07-21 04:55:48,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:55:48,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:55:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:48,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:55:48,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:48,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:55:48,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:48,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:55:48,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:48,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:55:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:48,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:55:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:48,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:55:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:48,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 04:55:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:48,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 04:55:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:48,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:55:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:48,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 04:55:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:48,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 04:55:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:48,457 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-21 04:55:48,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:55:48,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834550376] [2022-07-21 04:55:48,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834550376] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:55:48,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:55:48,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 04:55:48,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861939148] [2022-07-21 04:55:48,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:55:48,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 04:55:48,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:55:48,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 04:55:48,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:55:48,460 INFO L87 Difference]: Start difference. First operand 349 states and 537 transitions. Second operand has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 8 states have internal predecessors, (69), 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) [2022-07-21 04:55:50,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:55:50,605 INFO L93 Difference]: Finished difference Result 819 states and 1259 transitions. [2022-07-21 04:55:50,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 04:55:50,606 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 8 states have internal predecessors, (69), 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 101 [2022-07-21 04:55:50,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:55:50,609 INFO L225 Difference]: With dead ends: 819 [2022-07-21 04:55:50,609 INFO L226 Difference]: Without dead ends: 497 [2022-07-21 04:55:50,610 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 [2022-07-21 04:55:50,612 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 1130 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3393 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1130 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 3810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 3393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:55:50,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1130 Valid, 1668 Invalid, 3810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 3393 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-21 04:55:50,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-07-21 04:55:50,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 349. [2022-07-21 04:55:50,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 273 states have (on average 1.531135531135531) internal successors, (418), 279 states have internal predecessors, (418), 56 states have call successors, (56), 16 states have call predecessors, (56), 19 states have return successors, (62), 55 states have call predecessors, (62), 55 states have call successors, (62) [2022-07-21 04:55:50,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 536 transitions. [2022-07-21 04:55:50,637 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 536 transitions. Word has length 101 [2022-07-21 04:55:50,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:55:50,637 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 536 transitions. [2022-07-21 04:55:50,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 8 states have internal predecessors, (69), 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) [2022-07-21 04:55:50,638 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 536 transitions. [2022-07-21 04:55:50,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-21 04:55:50,640 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:55:50,640 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] [2022-07-21 04:55:50,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 04:55:50,641 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:55:50,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:55:50,642 INFO L85 PathProgramCache]: Analyzing trace with hash 400437826, now seen corresponding path program 2 times [2022-07-21 04:55:50,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:55:50,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650000975] [2022-07-21 04:55:50,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:55:50,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:55:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:50,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:55:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:50,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:55:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:50,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:55:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:50,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:55:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:50,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:55:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:50,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:55:50,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:50,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 04:55:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:50,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:55:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:50,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 04:55:50,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:50,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 04:55:50,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:50,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 04:55:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:50,789 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-21 04:55:50,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:55:50,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650000975] [2022-07-21 04:55:50,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650000975] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:55:50,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:55:50,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 04:55:50,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000973028] [2022-07-21 04:55:50,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:55:50,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 04:55:50,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:55:50,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 04:55:50,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:55:50,793 INFO L87 Difference]: Start difference. First operand 349 states and 536 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) [2022-07-21 04:55:52,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:55:52,865 INFO L93 Difference]: Finished difference Result 821 states and 1265 transitions. [2022-07-21 04:55:52,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 04:55:52,866 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 [2022-07-21 04:55:52,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:55:52,869 INFO L225 Difference]: With dead ends: 821 [2022-07-21 04:55:52,869 INFO L226 Difference]: Without dead ends: 499 [2022-07-21 04:55:52,870 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 [2022-07-21 04:55:52,871 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 1125 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3426 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 3838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 3426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-21 04:55:52,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1125 Valid, 1669 Invalid, 3838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 3426 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-21 04:55:52,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-07-21 04:55:52,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 351. [2022-07-21 04:55:52,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 274 states have (on average 1.5291970802919708) internal successors, (419), 281 states have internal predecessors, (419), 56 states have call successors, (56), 16 states have call predecessors, (56), 20 states have return successors, (67), 55 states have call predecessors, (67), 55 states have call successors, (67) [2022-07-21 04:55:52,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 542 transitions. [2022-07-21 04:55:52,896 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 542 transitions. Word has length 102 [2022-07-21 04:55:52,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:55:52,897 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 542 transitions. [2022-07-21 04:55:52,897 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) [2022-07-21 04:55:52,897 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 542 transitions. [2022-07-21 04:55:52,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-21 04:55:52,899 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:55:52,899 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] [2022-07-21 04:55:52,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 04:55:52,899 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:55:52,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:55:52,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1821386649, now seen corresponding path program 1 times [2022-07-21 04:55:52,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:55:52,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955287068] [2022-07-21 04:55:52,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:55:52,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:55:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:52,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:55:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:52,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:55:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:52,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:55:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:52,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:55:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:52,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:55:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:52,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:55:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:52,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:55:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:52,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 04:55:52,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:52,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 04:55:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:52,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 04:55:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:52,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 04:55:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:52,994 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:55:52,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:55:52,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955287068] [2022-07-21 04:55:52,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955287068] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:55:52,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750523770] [2022-07-21 04:55:52,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:55:52,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:55:52,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:55:52,996 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) [2022-07-21 04:55:53,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 04:55:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:53,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:55:53,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:55:53,278 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:55:53,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 04:55:53,352 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:55:53,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750523770] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 04:55:53,353 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 04:55:53,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2022-07-21 04:55:53,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857114082] [2022-07-21 04:55:53,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 04:55:53,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 04:55:53,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:55:53,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 04:55:53,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-07-21 04:55:53,355 INFO L87 Difference]: Start difference. First operand 351 states and 542 transitions. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:55:54,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:55:54,858 INFO L93 Difference]: Finished difference Result 990 states and 1593 transitions. [2022-07-21 04:55:54,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:55:54,858 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 103 [2022-07-21 04:55:54,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:55:54,865 INFO L225 Difference]: With dead ends: 990 [2022-07-21 04:55:54,865 INFO L226 Difference]: Without dead ends: 851 [2022-07-21 04:55:54,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-07-21 04:55:54,867 INFO L413 NwaCegarLoop]: 645 mSDtfsCounter, 1529 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 538 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1574 SdHoareTripleChecker+Valid, 1647 SdHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 538 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:55:54,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1574 Valid, 1647 Invalid, 1796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [538 Valid, 1258 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 04:55:54,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-07-21 04:55:54,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 679. [2022-07-21 04:55:54,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 538 states have (on average 1.5929368029739777) internal successors, (857), 545 states have internal predecessors, (857), 120 states have call successors, (120), 16 states have call predecessors, (120), 20 states have return successors, (141), 119 states have call predecessors, (141), 119 states have call successors, (141) [2022-07-21 04:55:54,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1118 transitions. [2022-07-21 04:55:54,918 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1118 transitions. Word has length 103 [2022-07-21 04:55:54,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:55:54,918 INFO L495 AbstractCegarLoop]: Abstraction has 679 states and 1118 transitions. [2022-07-21 04:55:54,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:55:54,918 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1118 transitions. [2022-07-21 04:55:54,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-21 04:55:54,923 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:55:54,923 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] [2022-07-21 04:55:54,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 04:55:55,150 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 [2022-07-21 04:55:55,151 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:55:55,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:55:55,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1014946556, now seen corresponding path program 1 times [2022-07-21 04:55:55,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:55:55,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593757143] [2022-07-21 04:55:55,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:55:55,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:55:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:55,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:55:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:55,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:55:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:55,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:55:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:55,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:55:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:55,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:55:55,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:55,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:55:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:55,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 04:55:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:55,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:55:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:55,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 04:55:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:55,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 04:55:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:55,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 04:55:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:55,268 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:55:55,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:55:55,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593757143] [2022-07-21 04:55:55,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593757143] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:55:55,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:55:55,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:55:55,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065151288] [2022-07-21 04:55:55,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:55:55,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:55:55,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:55:55,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:55:55,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:55:55,270 INFO L87 Difference]: Start difference. First operand 679 states and 1118 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) [2022-07-21 04:55:56,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:55:56,504 INFO L93 Difference]: Finished difference Result 1771 states and 2964 transitions. [2022-07-21 04:55:56,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:55:56,505 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 [2022-07-21 04:55:56,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:55:56,515 INFO L225 Difference]: With dead ends: 1771 [2022-07-21 04:55:56,515 INFO L226 Difference]: Without dead ends: 1160 [2022-07-21 04:55:56,518 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 [2022-07-21 04:55:56,519 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 1014 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 1425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:55:56,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 1240 Invalid, 1425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [408 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 04:55:56,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2022-07-21 04:55:56,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1004. [2022-07-21 04:55:56,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 799 states have (on average 1.6045056320400501) internal successors, (1282), 806 states have internal predecessors, (1282), 184 states have call successors, (184), 16 states have call predecessors, (184), 20 states have return successors, (215), 183 states have call predecessors, (215), 183 states have call successors, (215) [2022-07-21 04:55:56,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1681 transitions. [2022-07-21 04:55:56,606 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1681 transitions. Word has length 109 [2022-07-21 04:55:56,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:55:56,607 INFO L495 AbstractCegarLoop]: Abstraction has 1004 states and 1681 transitions. [2022-07-21 04:55:56,607 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) [2022-07-21 04:55:56,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1681 transitions. [2022-07-21 04:55:56,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-21 04:55:56,612 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:55:56,612 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] [2022-07-21 04:55:56,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 04:55:56,612 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:55:56,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:55:56,613 INFO L85 PathProgramCache]: Analyzing trace with hash 2033055594, now seen corresponding path program 1 times [2022-07-21 04:55:56,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:55:56,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082432819] [2022-07-21 04:55:56,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:55:56,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:55:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:56,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:55:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:56,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:55:56,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:56,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:55:56,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:56,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:55:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:56,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:55:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:56,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:55:56,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:56,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 04:55:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:56,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:55:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:56,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 04:55:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:56,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 04:55:56,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:56,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 04:55:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:56,695 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:55:56,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:55:56,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082432819] [2022-07-21 04:55:56,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082432819] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:55:56,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:55:56,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:55:56,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539277093] [2022-07-21 04:55:56,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:55:56,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:55:56,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:55:56,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:55:56,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:55:56,697 INFO L87 Difference]: Start difference. First operand 1004 states and 1681 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) [2022-07-21 04:55:57,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:55:57,897 INFO L93 Difference]: Finished difference Result 2551 states and 4313 transitions. [2022-07-21 04:55:57,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:55:57,898 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 [2022-07-21 04:55:57,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:55:57,907 INFO L225 Difference]: With dead ends: 2551 [2022-07-21 04:55:57,907 INFO L226 Difference]: Without dead ends: 1668 [2022-07-21 04:55:57,910 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 [2022-07-21 04:55:57,911 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 1012 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:55:57,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1027 Valid, 1255 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 04:55:57,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2022-07-21 04:55:57,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1512. [2022-07-21 04:55:57,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1212 states have (on average 1.6113861386138615) internal successors, (1953), 1219 states have internal predecessors, (1953), 279 states have call successors, (279), 16 states have call predecessors, (279), 20 states have return successors, (310), 278 states have call predecessors, (310), 278 states have call successors, (310) [2022-07-21 04:55:58,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 2542 transitions. [2022-07-21 04:55:58,005 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 2542 transitions. Word has length 110 [2022-07-21 04:55:58,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:55:58,005 INFO L495 AbstractCegarLoop]: Abstraction has 1512 states and 2542 transitions. [2022-07-21 04:55:58,005 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) [2022-07-21 04:55:58,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 2542 transitions. [2022-07-21 04:55:58,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-21 04:55:58,012 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:55:58,013 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] [2022-07-21 04:55:58,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 04:55:58,013 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:55:58,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:55:58,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1439293862, now seen corresponding path program 1 times [2022-07-21 04:55:58,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:55:58,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495716173] [2022-07-21 04:55:58,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:55:58,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:55:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:58,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:55:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:58,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:55:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:58,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:55:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:58,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:55:58,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:58,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:55:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:58,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:55:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:58,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 04:55:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:58,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 04:55:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:58,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 04:55:58,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:58,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 04:55:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:58,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 04:55:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:58,096 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:55:58,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:55:58,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495716173] [2022-07-21 04:55:58,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495716173] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:55:58,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:55:58,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:55:58,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551297024] [2022-07-21 04:55:58,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:55:58,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:55:58,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:55:58,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:55:58,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:55:58,099 INFO L87 Difference]: Start difference. First operand 1512 states and 2542 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) [2022-07-21 04:55:59,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:55:59,343 INFO L93 Difference]: Finished difference Result 3703 states and 6322 transitions. [2022-07-21 04:55:59,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:55:59,343 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 [2022-07-21 04:55:59,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:55:59,356 INFO L225 Difference]: With dead ends: 3703 [2022-07-21 04:55:59,356 INFO L226 Difference]: Without dead ends: 2437 [2022-07-21 04:55:59,361 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 [2022-07-21 04:55:59,362 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 1010 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:55:59,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 1218 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 04:55:59,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2437 states. [2022-07-21 04:55:59,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2437 to 2281. [2022-07-21 04:55:59,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2281 states, 1858 states have (on average 1.6167922497308935) internal successors, (3004), 1865 states have internal predecessors, (3004), 402 states have call successors, (402), 16 states have call predecessors, (402), 20 states have return successors, (449), 401 states have call predecessors, (449), 401 states have call successors, (449) [2022-07-21 04:55:59,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 3855 transitions. [2022-07-21 04:55:59,520 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 3855 transitions. Word has length 111 [2022-07-21 04:55:59,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:55:59,520 INFO L495 AbstractCegarLoop]: Abstraction has 2281 states and 3855 transitions. [2022-07-21 04:55:59,520 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) [2022-07-21 04:55:59,520 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 3855 transitions. [2022-07-21 04:55:59,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 04:55:59,528 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:55:59,529 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] [2022-07-21 04:55:59,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 04:55:59,529 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:55:59,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:55:59,530 INFO L85 PathProgramCache]: Analyzing trace with hash -497333621, now seen corresponding path program 1 times [2022-07-21 04:55:59,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:55:59,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621733954] [2022-07-21 04:55:59,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:55:59,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:55:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:59,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:55:59,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:59,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:55:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:59,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:55:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:59,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:55:59,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:59,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:55:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:59,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:55:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:59,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 04:55:59,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:59,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 04:55:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:59,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 04:55:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:59,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 04:55:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:59,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 04:55:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:55:59,616 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:55:59,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:55:59,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621733954] [2022-07-21 04:55:59,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621733954] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:55:59,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:55:59,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:55:59,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515705845] [2022-07-21 04:55:59,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:55:59,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:55:59,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:55:59,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:55:59,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:55:59,619 INFO L87 Difference]: Start difference. First operand 2281 states and 3855 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) [2022-07-21 04:56:00,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:56:00,759 INFO L93 Difference]: Finished difference Result 5497 states and 9456 transitions. [2022-07-21 04:56:00,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:56:00,760 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 [2022-07-21 04:56:00,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:56:00,781 INFO L225 Difference]: With dead ends: 5497 [2022-07-21 04:56:00,782 INFO L226 Difference]: Without dead ends: 3666 [2022-07-21 04:56:00,789 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 [2022-07-21 04:56:00,790 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 1008 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 1401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:56:00,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1023 Valid, 1218 Invalid, 1401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 04:56:00,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3666 states. [2022-07-21 04:56:00,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3666 to 3510. [2022-07-21 04:56:01,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3510 states, 2908 states have (on average 1.6200137551581844) internal successors, (4711), 2915 states have internal predecessors, (4711), 581 states have call successors, (581), 16 states have call predecessors, (581), 20 states have return successors, (654), 580 states have call predecessors, (654), 580 states have call successors, (654) [2022-07-21 04:56:01,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3510 states to 3510 states and 5946 transitions. [2022-07-21 04:56:01,011 INFO L78 Accepts]: Start accepts. Automaton has 3510 states and 5946 transitions. Word has length 112 [2022-07-21 04:56:01,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:56:01,012 INFO L495 AbstractCegarLoop]: Abstraction has 3510 states and 5946 transitions. [2022-07-21 04:56:01,012 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) [2022-07-21 04:56:01,012 INFO L276 IsEmpty]: Start isEmpty. Operand 3510 states and 5946 transitions. [2022-07-21 04:56:01,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-21 04:56:01,021 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:56:01,022 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] [2022-07-21 04:56:01,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 04:56:01,022 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:56:01,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:56:01,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1467419038, now seen corresponding path program 1 times [2022-07-21 04:56:01,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:56:01,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185312613] [2022-07-21 04:56:01,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:56:01,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:56:01,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:01,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:56:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:01,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:56:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:01,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:56:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:01,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:56:01,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:01,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:56:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:01,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:56:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:01,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 04:56:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:01,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 04:56:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:01,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 04:56:01,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:01,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 04:56:01,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:01,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 04:56:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:01,115 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:56:01,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:56:01,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185312613] [2022-07-21 04:56:01,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185312613] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:56:01,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:56:01,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:56:01,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336901198] [2022-07-21 04:56:01,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:56:01,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:56:01,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:56:01,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:56:01,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:56:01,118 INFO L87 Difference]: Start difference. First operand 3510 states and 5946 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) [2022-07-21 04:56:02,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:56:02,352 INFO L93 Difference]: Finished difference Result 8445 states and 14603 transitions. [2022-07-21 04:56:02,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:56:02,353 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 [2022-07-21 04:56:02,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:56:02,386 INFO L225 Difference]: With dead ends: 8445 [2022-07-21 04:56:02,387 INFO L226 Difference]: Without dead ends: 5697 [2022-07-21 04:56:02,397 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 [2022-07-21 04:56:02,398 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 1006 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:56:02,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1021 Valid, 1220 Invalid, 1428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [408 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 04:56:02,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5697 states. [2022-07-21 04:56:02,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5697 to 5541. [2022-07-21 04:56:02,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5541 states, 4563 states have (on average 1.613631382862152) internal successors, (7363), 4570 states have internal predecessors, (7363), 957 states have call successors, (957), 16 states have call predecessors, (957), 20 states have return successors, (1074), 956 states have call predecessors, (1074), 956 states have call successors, (1074) [2022-07-21 04:56:02,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5541 states to 5541 states and 9394 transitions. [2022-07-21 04:56:02,799 INFO L78 Accepts]: Start accepts. Automaton has 5541 states and 9394 transitions. Word has length 113 [2022-07-21 04:56:02,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:56:02,800 INFO L495 AbstractCegarLoop]: Abstraction has 5541 states and 9394 transitions. [2022-07-21 04:56:02,801 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) [2022-07-21 04:56:02,801 INFO L276 IsEmpty]: Start isEmpty. Operand 5541 states and 9394 transitions. [2022-07-21 04:56:02,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-21 04:56:02,813 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:56:02,813 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] [2022-07-21 04:56:02,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 04:56:02,814 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:56:02,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:56:02,814 INFO L85 PathProgramCache]: Analyzing trace with hash -678340145, now seen corresponding path program 1 times [2022-07-21 04:56:02,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:56:02,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927643788] [2022-07-21 04:56:02,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:56:02,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:56:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:02,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:56:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:02,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:56:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:02,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:56:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:02,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:56:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:02,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:56:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:02,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:56:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:02,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:56:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:02,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 04:56:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:02,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 04:56:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:02,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 04:56:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:02,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 04:56:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:02,893 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:56:02,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:56:02,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927643788] [2022-07-21 04:56:02,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927643788] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:56:02,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:56:02,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:56:02,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544653056] [2022-07-21 04:56:02,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:56:02,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:56:02,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:56:02,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:56:02,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:56:02,896 INFO L87 Difference]: Start difference. First operand 5541 states and 9394 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) [2022-07-21 04:56:04,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:56:04,307 INFO L93 Difference]: Finished difference Result 13782 states and 23824 transitions. [2022-07-21 04:56:04,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:56:04,307 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 [2022-07-21 04:56:04,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:56:04,355 INFO L225 Difference]: With dead ends: 13782 [2022-07-21 04:56:04,355 INFO L226 Difference]: Without dead ends: 9380 [2022-07-21 04:56:04,375 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 [2022-07-21 04:56:04,376 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 1004 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:56:04,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1019 Valid, 1219 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 04:56:04,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9380 states. [2022-07-21 04:56:04,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9380 to 9224. [2022-07-21 04:56:04,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9224 states, 7640 states have (on average 1.6111256544502617) internal successors, (12309), 7647 states have internal predecessors, (12309), 1563 states have call successors, (1563), 16 states have call predecessors, (1563), 20 states have return successors, (1758), 1562 states have call predecessors, (1758), 1562 states have call successors, (1758) [2022-07-21 04:56:04,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9224 states to 9224 states and 15630 transitions. [2022-07-21 04:56:04,922 INFO L78 Accepts]: Start accepts. Automaton has 9224 states and 15630 transitions. Word has length 114 [2022-07-21 04:56:04,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:56:04,922 INFO L495 AbstractCegarLoop]: Abstraction has 9224 states and 15630 transitions. [2022-07-21 04:56:04,922 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) [2022-07-21 04:56:04,923 INFO L276 IsEmpty]: Start isEmpty. Operand 9224 states and 15630 transitions. [2022-07-21 04:56:04,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-21 04:56:04,941 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:56:04,941 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] [2022-07-21 04:56:04,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 04:56:04,941 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:56:04,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:56:04,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1860754352, now seen corresponding path program 1 times [2022-07-21 04:56:04,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:56:04,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944089890] [2022-07-21 04:56:04,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:56:04,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:56:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:04,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:56:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:04,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:56:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:04,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:56:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:05,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:56:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:05,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:56:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:05,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:56:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:05,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:56:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:05,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:56:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:05,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 04:56:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:05,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 04:56:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:05,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 04:56:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:05,029 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:56:05,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:56:05,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944089890] [2022-07-21 04:56:05,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944089890] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:56:05,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:56:05,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:56:05,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93606110] [2022-07-21 04:56:05,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:56:05,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:56:05,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:56:05,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:56:05,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:56:05,032 INFO L87 Difference]: Start difference. First operand 9224 states and 15630 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) [2022-07-21 04:56:06,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:56:06,516 INFO L93 Difference]: Finished difference Result 23966 states and 41370 transitions. [2022-07-21 04:56:06,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:56:06,516 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 [2022-07-21 04:56:06,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:56:06,584 INFO L225 Difference]: With dead ends: 23966 [2022-07-21 04:56:06,584 INFO L226 Difference]: Without dead ends: 16333 [2022-07-21 04:56:06,617 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 [2022-07-21 04:56:06,618 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 1002 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 1426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:56:06,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1017 Valid, 1265 Invalid, 1426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 04:56:06,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16333 states. [2022-07-21 04:56:07,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16333 to 16177. [2022-07-21 04:56:07,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16177 states, 13390 states have (on average 1.6020164301717699) internal successors, (21451), 13397 states have internal predecessors, (21451), 2766 states have call successors, (2766), 16 states have call predecessors, (2766), 20 states have return successors, (3105), 2765 states have call predecessors, (3105), 2765 states have call successors, (3105) [2022-07-21 04:56:07,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16177 states to 16177 states and 27322 transitions. [2022-07-21 04:56:07,574 INFO L78 Accepts]: Start accepts. Automaton has 16177 states and 27322 transitions. Word has length 115 [2022-07-21 04:56:07,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:56:07,574 INFO L495 AbstractCegarLoop]: Abstraction has 16177 states and 27322 transitions. [2022-07-21 04:56:07,574 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) [2022-07-21 04:56:07,575 INFO L276 IsEmpty]: Start isEmpty. Operand 16177 states and 27322 transitions. [2022-07-21 04:56:07,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-21 04:56:07,594 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:56:07,595 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] [2022-07-21 04:56:07,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 04:56:07,595 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:56:07,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:56:07,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1941197296, now seen corresponding path program 1 times [2022-07-21 04:56:07,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:56:07,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011646590] [2022-07-21 04:56:07,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:56:07,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:56:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:07,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:56:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:07,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:56:07,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:07,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:56:07,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:07,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:56:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:07,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:56:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:07,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:56:07,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:07,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 04:56:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:07,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 04:56:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:07,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 04:56:07,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:07,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 04:56:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:07,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 04:56:07,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:07,677 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:56:07,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:56:07,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011646590] [2022-07-21 04:56:07,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011646590] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:56:07,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:56:07,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:56:07,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849465640] [2022-07-21 04:56:07,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:56:07,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:56:07,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:56:07,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:56:07,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:56:07,681 INFO L87 Difference]: Start difference. First operand 16177 states and 27322 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) [2022-07-21 04:56:09,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:56:09,841 INFO L93 Difference]: Finished difference Result 42932 states and 73969 transitions. [2022-07-21 04:56:09,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:56:09,842 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 [2022-07-21 04:56:09,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:56:09,958 INFO L225 Difference]: With dead ends: 42932 [2022-07-21 04:56:09,958 INFO L226 Difference]: Without dead ends: 28988 [2022-07-21 04:56:10,000 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 [2022-07-21 04:56:10,001 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 1000 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:56:10,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 1219 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 04:56:10,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28988 states. [2022-07-21 04:56:11,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28988 to 28832. [2022-07-21 04:56:11,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28832 states, 24006 states have (on average 1.597725568607848) internal successors, (38355), 24013 states have internal predecessors, (38355), 4805 states have call successors, (4805), 16 states have call predecessors, (4805), 20 states have return successors, (5418), 4804 states have call predecessors, (5418), 4804 states have call successors, (5418) [2022-07-21 04:56:11,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28832 states to 28832 states and 48578 transitions. [2022-07-21 04:56:11,470 INFO L78 Accepts]: Start accepts. Automaton has 28832 states and 48578 transitions. Word has length 116 [2022-07-21 04:56:11,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:56:11,470 INFO L495 AbstractCegarLoop]: Abstraction has 28832 states and 48578 transitions. [2022-07-21 04:56:11,471 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) [2022-07-21 04:56:11,471 INFO L276 IsEmpty]: Start isEmpty. Operand 28832 states and 48578 transitions. [2022-07-21 04:56:11,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-21 04:56:11,493 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:56:11,493 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] [2022-07-21 04:56:11,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 04:56:11,494 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:56:11,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:56:11,494 INFO L85 PathProgramCache]: Analyzing trace with hash -732373582, now seen corresponding path program 1 times [2022-07-21 04:56:11,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:56:11,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080342879] [2022-07-21 04:56:11,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:56:11,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:56:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:11,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:56:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:11,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:56:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:11,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:56:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:11,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:56:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:11,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:56:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:11,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:56:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:11,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 04:56:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:11,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 04:56:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:11,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 04:56:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:11,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 04:56:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:11,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 04:56:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:11,604 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:56:11,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:56:11,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080342879] [2022-07-21 04:56:11,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080342879] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:56:11,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:56:11,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:56:11,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918106790] [2022-07-21 04:56:11,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:56:11,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:56:11,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:56:11,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:56:11,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:56:11,607 INFO L87 Difference]: Start difference. First operand 28832 states and 48578 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 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) [2022-07-21 04:56:14,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:56:14,532 INFO L93 Difference]: Finished difference Result 78694 states and 134728 transitions. [2022-07-21 04:56:14,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:56:14,533 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 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 117 [2022-07-21 04:56:14,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:56:14,764 INFO L225 Difference]: With dead ends: 78694 [2022-07-21 04:56:14,765 INFO L226 Difference]: Without dead ends: 52867 [2022-07-21 04:56:14,854 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 [2022-07-21 04:56:14,855 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 998 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 1412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:56:14,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 1219 Invalid, 1412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 04:56:14,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52867 states. [2022-07-21 04:56:17,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52867 to 52711. [2022-07-21 04:56:17,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52711 states, 44170 states have (on average 1.5921213493321258) internal successors, (70324), 44177 states have internal predecessors, (70324), 8520 states have call successors, (8520), 16 states have call predecessors, (8520), 20 states have return successors, (9665), 8519 states have call predecessors, (9665), 8519 states have call successors, (9665) [2022-07-21 04:56:17,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52711 states to 52711 states and 88509 transitions. [2022-07-21 04:56:17,931 INFO L78 Accepts]: Start accepts. Automaton has 52711 states and 88509 transitions. Word has length 117 [2022-07-21 04:56:17,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:56:17,931 INFO L495 AbstractCegarLoop]: Abstraction has 52711 states and 88509 transitions. [2022-07-21 04:56:17,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 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) [2022-07-21 04:56:17,932 INFO L276 IsEmpty]: Start isEmpty. Operand 52711 states and 88509 transitions. [2022-07-21 04:56:17,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-21 04:56:17,954 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:56:17,955 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] [2022-07-21 04:56:17,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 04:56:17,955 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:56:17,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:56:17,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1116888912, now seen corresponding path program 1 times [2022-07-21 04:56:17,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:56:17,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168734288] [2022-07-21 04:56:17,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:56:17,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:56:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:18,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:56:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:18,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:56:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:18,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:56:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:18,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:56:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:18,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:56:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:18,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:56:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:18,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 04:56:18,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:18,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 04:56:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:18,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 04:56:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:18,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 04:56:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:18,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 04:56:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:18,065 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:56:18,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:56:18,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168734288] [2022-07-21 04:56:18,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168734288] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:56:18,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:56:18,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:56:18,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522522176] [2022-07-21 04:56:18,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:56:18,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:56:18,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:56:18,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:56:18,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:56:18,068 INFO L87 Difference]: Start difference. First operand 52711 states and 88509 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 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) [2022-07-21 04:56:22,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:56:22,197 INFO L93 Difference]: Finished difference Result 98465 states and 168915 transitions. [2022-07-21 04:56:22,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:56:22,198 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 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) Word has length 118 [2022-07-21 04:56:22,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:56:22,640 INFO L225 Difference]: With dead ends: 98465 [2022-07-21 04:56:22,640 INFO L226 Difference]: Without dead ends: 98326 [2022-07-21 04:56:22,697 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 [2022-07-21 04:56:22,698 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 996 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:56:22,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1011 Valid, 1221 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 04:56:22,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98326 states. [2022-07-21 04:56:27,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98326 to 98170. [2022-07-21 04:56:27,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98170 states, 82830 states have (on average 1.5851020161777134) internal successors, (131294), 82837 states have internal predecessors, (131294), 15319 states have call successors, (15319), 16 states have call predecessors, (15319), 20 states have return successors, (17510), 15318 states have call predecessors, (17510), 15318 states have call successors, (17510) [2022-07-21 04:56:27,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98170 states to 98170 states and 164123 transitions. [2022-07-21 04:56:27,428 INFO L78 Accepts]: Start accepts. Automaton has 98170 states and 164123 transitions. Word has length 118 [2022-07-21 04:56:27,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:56:27,428 INFO L495 AbstractCegarLoop]: Abstraction has 98170 states and 164123 transitions. [2022-07-21 04:56:27,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 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) [2022-07-21 04:56:27,428 INFO L276 IsEmpty]: Start isEmpty. Operand 98170 states and 164123 transitions. [2022-07-21 04:56:27,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-21 04:56:27,696 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:56:27,696 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, 1] [2022-07-21 04:56:27,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 04:56:27,697 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:56:27,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:56:27,710 INFO L85 PathProgramCache]: Analyzing trace with hash 2090243313, now seen corresponding path program 1 times [2022-07-21 04:56:27,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:56:27,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230879060] [2022-07-21 04:56:27,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:56:27,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:56:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:27,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:56:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:27,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:56:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:27,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:56:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:27,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:56:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:27,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:56:27,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:27,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:56:27,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:27,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 04:56:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:27,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 04:56:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:27,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 04:56:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:27,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 04:56:27,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:27,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 04:56:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:27,947 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:56:27,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:56:27,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230879060] [2022-07-21 04:56:27,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230879060] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:56:27,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:56:27,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-21 04:56:27,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063338156] [2022-07-21 04:56:27,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:56:27,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 04:56:27,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:56:27,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 04:56:27,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2022-07-21 04:56:27,950 INFO L87 Difference]: Start difference. First operand 98170 states and 164123 transitions. Second operand has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2022-07-21 04:56:40,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:56:40,235 INFO L93 Difference]: Finished difference Result 196666 states and 340630 transitions. [2022-07-21 04:56:40,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-21 04:56:40,237 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 119 [2022-07-21 04:56:40,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:56:41,336 INFO L225 Difference]: With dead ends: 196666 [2022-07-21 04:56:41,337 INFO L226 Difference]: Without dead ends: 196533 [2022-07-21 04:56:41,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1277 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=822, Invalid=3600, Unknown=0, NotChecked=0, Total=4422 [2022-07-21 04:56:41,452 INFO L413 NwaCegarLoop]: 654 mSDtfsCounter, 5082 mSDsluCounter, 2419 mSDsCounter, 0 mSdLazyCounter, 8564 mSolverCounterSat, 2476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5082 SdHoareTripleChecker+Valid, 3073 SdHoareTripleChecker+Invalid, 11040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2476 IncrementalHoareTripleChecker+Valid, 8564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:56:41,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5082 Valid, 3073 Invalid, 11040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2476 Valid, 8564 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-07-21 04:56:41,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196533 states. [2022-07-21 04:56:50,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196533 to 195512. [2022-07-21 04:56:50,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195512 states, 165032 states have (on average 1.5858984924135926) internal successors, (261724), 164935 states have internal predecessors, (261724), 30430 states have call successors, (30430), 41 states have call predecessors, (30430), 49 states have return successors, (38087), 30541 states have call predecessors, (38087), 30427 states have call successors, (38087) [2022-07-21 04:56:51,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195512 states to 195512 states and 330241 transitions. [2022-07-21 04:56:51,707 INFO L78 Accepts]: Start accepts. Automaton has 195512 states and 330241 transitions. Word has length 119 [2022-07-21 04:56:51,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:56:51,707 INFO L495 AbstractCegarLoop]: Abstraction has 195512 states and 330241 transitions. [2022-07-21 04:56:51,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2022-07-21 04:56:51,708 INFO L276 IsEmpty]: Start isEmpty. Operand 195512 states and 330241 transitions. [2022-07-21 04:56:51,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-21 04:56:51,752 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:56:51,752 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, 1, 1] [2022-07-21 04:56:51,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 04:56:51,753 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:56:51,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:56:51,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1622170436, now seen corresponding path program 1 times [2022-07-21 04:56:51,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:56:51,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919503091] [2022-07-21 04:56:51,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:56:51,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:56:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:51,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:56:51,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:51,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:56:51,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:51,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:56:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:51,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:56:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:51,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:56:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:51,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:56:51,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:51,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 04:56:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:51,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 04:56:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:51,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 04:56:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:51,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 04:56:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:51,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-21 04:56:51,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:56:51,919 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:56:51,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:56:51,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919503091] [2022-07-21 04:56:51,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919503091] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:56:51,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:56:51,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 04:56:51,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690524856] [2022-07-21 04:56:51,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:56:51,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 04:56:51,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:56:51,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 04:56:51,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:56:51,922 INFO L87 Difference]: Start difference. First operand 195512 states and 330241 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 6 states have internal predecessors, (83), 4 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11)