./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec11_product18.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_spec11_product18.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 58fd69d2f74506159a7a57598b08a18ff098ebf1233f7e6688a335d4e30dd566 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 04:43:34,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 04:43:34,312 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 04:43:34,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 04:43:34,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 04:43:34,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 04:43:34,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 04:43:34,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 04:43:34,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 04:43:34,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 04:43:34,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 04:43:34,350 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 04:43:34,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 04:43:34,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 04:43:34,353 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 04:43:34,354 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 04:43:34,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 04:43:34,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 04:43:34,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 04:43:34,362 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 04:43:34,363 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 04:43:34,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 04:43:34,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 04:43:34,368 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 04:43:34,369 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 04:43:34,371 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 04:43:34,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 04:43:34,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 04:43:34,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 04:43:34,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 04:43:34,377 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 04:43:34,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 04:43:34,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 04:43:34,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 04:43:34,381 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 04:43:34,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 04:43:34,383 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 04:43:34,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 04:43:34,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 04:43:34,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 04:43:34,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 04:43:34,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 04:43:34,388 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 04:43:34,404 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 04:43:34,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 04:43:34,409 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 04:43:34,409 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 04:43:34,409 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 04:43:34,410 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 04:43:34,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 04:43:34,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 04:43:34,411 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 04:43:34,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 04:43:34,419 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 04:43:34,419 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 04:43:34,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 04:43:34,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 04:43:34,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 04:43:34,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 04:43:34,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 04:43:34,420 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 04:43:34,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 04:43:34,420 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 04:43:34,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 04:43:34,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 04:43:34,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 04:43:34,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 04:43:34,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 04:43:34,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 04:43:34,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 04:43:34,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 04:43:34,422 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 04:43:34,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 04:43:34,423 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 04:43:34,423 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 04:43:34,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 04:43:34,423 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58fd69d2f74506159a7a57598b08a18ff098ebf1233f7e6688a335d4e30dd566 [2022-07-21 04:43:34,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 04:43:34,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 04:43:34,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 04:43:34,694 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 04:43:34,694 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 04:43:34,696 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec11_product18.cil.c [2022-07-21 04:43:34,742 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20bb15fe5/dc9e7e89e8ad4313a33fdebfd9837375/FLAGa6e121302 [2022-07-21 04:43:35,204 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 04:43:35,205 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec11_product18.cil.c [2022-07-21 04:43:35,221 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20bb15fe5/dc9e7e89e8ad4313a33fdebfd9837375/FLAGa6e121302 [2022-07-21 04:43:35,539 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20bb15fe5/dc9e7e89e8ad4313a33fdebfd9837375 [2022-07-21 04:43:35,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 04:43:35,542 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 04:43:35,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 04:43:35,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 04:43:35,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 04:43:35,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:43:35" (1/1) ... [2022-07-21 04:43:35,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5507671b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:35, skipping insertion in model container [2022-07-21 04:43:35,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:43:35" (1/1) ... [2022-07-21 04:43:35,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 04:43:35,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 04:43:36,035 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec11_product18.cil.c[57905,57918] [2022-07-21 04:43:36,067 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 04:43:36,078 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 04:43:36,143 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec11_product18.cil.c[57905,57918] [2022-07-21 04:43:36,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 04:43:36,176 INFO L208 MainTranslator]: Completed translation [2022-07-21 04:43:36,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:36 WrapperNode [2022-07-21 04:43:36,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 04:43:36,178 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 04:43:36,178 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 04:43:36,178 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 04:43:36,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:36" (1/1) ... [2022-07-21 04:43:36,200 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:36" (1/1) ... [2022-07-21 04:43:36,280 INFO L137 Inliner]: procedures = 127, calls = 198, calls flagged for inlining = 59, calls inlined = 50, statements flattened = 907 [2022-07-21 04:43:36,280 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 04:43:36,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 04:43:36,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 04:43:36,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 04:43:36,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:36" (1/1) ... [2022-07-21 04:43:36,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:36" (1/1) ... [2022-07-21 04:43:36,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:36" (1/1) ... [2022-07-21 04:43:36,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:36" (1/1) ... [2022-07-21 04:43:36,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:36" (1/1) ... [2022-07-21 04:43:36,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:36" (1/1) ... [2022-07-21 04:43:36,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:36" (1/1) ... [2022-07-21 04:43:36,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 04:43:36,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 04:43:36,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 04:43:36,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 04:43:36,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:36" (1/1) ... [2022-07-21 04:43:36,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 04:43:36,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:43:36,387 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 04:43:36,411 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 04:43:36,427 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-07-21 04:43:36,428 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-07-21 04:43:36,428 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-07-21 04:43:36,428 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-07-21 04:43:36,428 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-07-21 04:43:36,428 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-07-21 04:43:36,428 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-07-21 04:43:36,429 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-07-21 04:43:36,429 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-07-21 04:43:36,429 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-07-21 04:43:36,429 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-07-21 04:43:36,429 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-07-21 04:43:36,429 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-07-21 04:43:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-07-21 04:43:36,430 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-07-21 04:43:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-07-21 04:43:36,430 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-07-21 04:43:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 04:43:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-07-21 04:43:36,430 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-07-21 04:43:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-07-21 04:43:36,430 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-07-21 04:43:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-07-21 04:43:36,431 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-07-21 04:43:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-07-21 04:43:36,431 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-07-21 04:43:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-07-21 04:43:36,431 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-07-21 04:43:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-07-21 04:43:36,431 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-07-21 04:43:36,432 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-07-21 04:43:36,432 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-07-21 04:43:36,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 04:43:36,432 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-07-21 04:43:36,432 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-07-21 04:43:36,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 04:43:36,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 04:43:36,637 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 04:43:36,639 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 04:43:37,157 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 04:43:37,164 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 04:43:37,165 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 04:43:37,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:43:37 BoogieIcfgContainer [2022-07-21 04:43:37,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 04:43:37,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 04:43:37,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 04:43:37,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 04:43:37,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:43:35" (1/3) ... [2022-07-21 04:43:37,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e172bbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:43:37, skipping insertion in model container [2022-07-21 04:43:37,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:36" (2/3) ... [2022-07-21 04:43:37,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e172bbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:43:37, skipping insertion in model container [2022-07-21 04:43:37,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:43:37" (3/3) ... [2022-07-21 04:43:37,173 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product18.cil.c [2022-07-21 04:43:37,185 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 04:43:37,185 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 04:43:37,235 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 04:43:37,241 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@58e6bfb4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5cd27c07 [2022-07-21 04:43:37,241 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 04:43:37,254 INFO L276 IsEmpty]: Start isEmpty. Operand has 284 states, 228 states have (on average 1.5482456140350878) internal successors, (353), 230 states have internal predecessors, (353), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-07-21 04:43:37,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-21 04:43:37,268 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:37,269 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:37,269 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:37,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:37,276 INFO L85 PathProgramCache]: Analyzing trace with hash -420694025, now seen corresponding path program 1 times [2022-07-21 04:43:37,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:37,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658296713] [2022-07-21 04:43:37,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:37,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:37,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:37,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:37,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:43:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:37,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 04:43:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:37,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 04:43:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:37,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 04:43:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:37,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 04:43:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:37,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 04:43:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:37,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 04:43:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:37,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:43:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:37,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 04:43:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:37,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 04:43:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:37,691 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 04:43:37,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:37,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658296713] [2022-07-21 04:43:37,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658296713] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:43:37,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603737348] [2022-07-21 04:43:37,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:37,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:43:37,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:43:37,694 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 04:43:37,699 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 04:43:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:37,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 1043 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 04:43:37,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:43:38,025 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-21 04:43:38,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:43:38,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603737348] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:38,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:43:38,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-07-21 04:43:38,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585724200] [2022-07-21 04:43:38,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:38,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 04:43:38,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:38,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 04:43:38,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:43:38,066 INFO L87 Difference]: Start difference. First operand has 284 states, 228 states have (on average 1.5482456140350878) internal successors, (353), 230 states have internal predecessors, (353), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:43:38,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:38,110 INFO L93 Difference]: Finished difference Result 414 states and 612 transitions. [2022-07-21 04:43:38,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 04:43:38,112 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 98 [2022-07-21 04:43:38,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:38,125 INFO L225 Difference]: With dead ends: 414 [2022-07-21 04:43:38,127 INFO L226 Difference]: Without dead ends: 277 [2022-07-21 04:43:38,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 118 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 04:43:38,138 INFO L413 NwaCegarLoop]: 425 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, 425 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 04:43:38,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:43:38,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-07-21 04:43:38,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2022-07-21 04:43:38,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 222 states have (on average 1.5405405405405406) internal successors, (342), 223 states have internal predecessors, (342), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-21 04:43:38,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 417 transitions. [2022-07-21 04:43:38,196 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 417 transitions. Word has length 98 [2022-07-21 04:43:38,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:38,197 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 417 transitions. [2022-07-21 04:43:38,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:43:38,197 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 417 transitions. [2022-07-21 04:43:38,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-21 04:43:38,203 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:38,204 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-07-21 04:43:38,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-21 04:43:38,415 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 04:43:38,415 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:38,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:38,416 INFO L85 PathProgramCache]: Analyzing trace with hash -2127493050, now seen corresponding path program 1 times [2022-07-21 04:43:38,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:38,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5122378] [2022-07-21 04:43:38,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:38,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:38,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:38,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:38,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:38,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:38,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:43:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:38,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 04:43:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:38,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 04:43:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:38,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 04:43:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:38,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 04:43:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:38,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:43:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:38,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 04:43:38,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:38,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 04:43:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:38,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 04:43:38,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:38,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 04:43:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:38,591 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 04:43:38,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:38,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5122378] [2022-07-21 04:43:38,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5122378] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:43:38,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448490507] [2022-07-21 04:43:38,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:38,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:43:38,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:43:38,597 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 04:43:38,599 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 04:43:38,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:38,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 04:43:38,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:43:38,826 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-21 04:43:38,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:43:38,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448490507] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:38,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:43:38,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-21 04:43:38,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445886164] [2022-07-21 04:43:38,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:38,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 04:43:38,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:38,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 04:43:38,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:43:38,829 INFO L87 Difference]: Start difference. First operand 277 states and 417 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:43:38,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:38,894 INFO L93 Difference]: Finished difference Result 404 states and 593 transitions. [2022-07-21 04:43:38,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 04:43:38,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 99 [2022-07-21 04:43:38,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:38,898 INFO L225 Difference]: With dead ends: 404 [2022-07-21 04:43:38,898 INFO L226 Difference]: Without dead ends: 280 [2022-07-21 04:43:38,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 118 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 04:43:38,900 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 1 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 828 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 04:43:38,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 828 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:43:38,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-07-21 04:43:38,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 279. [2022-07-21 04:43:38,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 224 states have (on average 1.5357142857142858) internal successors, (344), 225 states have internal predecessors, (344), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-21 04:43:38,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 419 transitions. [2022-07-21 04:43:38,960 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 419 transitions. Word has length 99 [2022-07-21 04:43:38,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:38,962 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 419 transitions. [2022-07-21 04:43:38,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:43:38,963 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 419 transitions. [2022-07-21 04:43:38,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-21 04:43:38,969 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:38,969 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:38,990 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 04:43:39,190 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 04:43:39,190 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:39,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:39,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1018330324, now seen corresponding path program 1 times [2022-07-21 04:43:39,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:39,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302170965] [2022-07-21 04:43:39,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:39,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:39,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:39,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:39,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:43:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:39,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 04:43:39,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:39,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 04:43:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:39,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 04:43:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:39,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 04:43:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:39,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:43:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:39,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 04:43:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:39,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 04:43:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:39,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 04:43:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:39,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 04:43:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:39,298 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-21 04:43:39,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:39,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302170965] [2022-07-21 04:43:39,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302170965] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:43:39,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777831883] [2022-07-21 04:43:39,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:39,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:43:39,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:43:39,300 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 04:43:39,301 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 04:43:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:39,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 1071 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:43:39,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:43:39,525 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-21 04:43:39,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:43:39,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777831883] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:39,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:43:39,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-21 04:43:39,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263464164] [2022-07-21 04:43:39,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:39,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 04:43:39,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:39,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 04:43:39,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:43:39,527 INFO L87 Difference]: Start difference. First operand 279 states and 419 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:43:39,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:39,561 INFO L93 Difference]: Finished difference Result 588 states and 897 transitions. [2022-07-21 04:43:39,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 04:43:39,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2022-07-21 04:43:39,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:39,566 INFO L225 Difference]: With dead ends: 588 [2022-07-21 04:43:39,566 INFO L226 Difference]: Without dead ends: 336 [2022-07-21 04:43:39,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 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 04:43:39,568 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 107 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 800 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 04:43:39,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 800 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:43:39,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-07-21 04:43:39,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 328. [2022-07-21 04:43:39,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 262 states have (on average 1.549618320610687) internal successors, (406), 263 states have internal predecessors, (406), 49 states have call successors, (49), 16 states have call predecessors, (49), 16 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-07-21 04:43:39,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 503 transitions. [2022-07-21 04:43:39,593 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 503 transitions. Word has length 108 [2022-07-21 04:43:39,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:39,593 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 503 transitions. [2022-07-21 04:43:39,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:43:39,593 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 503 transitions. [2022-07-21 04:43:39,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-21 04:43:39,598 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:39,598 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:39,618 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 04:43:39,799 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 04:43:39,799 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:39,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:39,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1552258535, now seen corresponding path program 1 times [2022-07-21 04:43:39,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:39,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960802800] [2022-07-21 04:43:39,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:39,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:39,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:39,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:39,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:43:39,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:39,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 04:43:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:39,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 04:43:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:39,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 04:43:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:39,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 04:43:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:39,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 04:43:39,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:39,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:43:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:39,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 04:43:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:39,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 04:43:39,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:39,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 04:43:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:39,905 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-21 04:43:39,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:39,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960802800] [2022-07-21 04:43:39,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960802800] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:43:39,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711594366] [2022-07-21 04:43:39,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:39,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:43:39,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:43:39,907 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 04:43:39,908 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 04:43:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:40,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 1078 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 04:43:40,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:43:40,182 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-21 04:43:40,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:43:40,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711594366] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:40,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:43:40,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-07-21 04:43:40,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553149310] [2022-07-21 04:43:40,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:40,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:43:40,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:40,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:43:40,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:43:40,185 INFO L87 Difference]: Start difference. First operand 328 states and 503 transitions. Second operand has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-21 04:43:40,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:40,255 INFO L93 Difference]: Finished difference Result 647 states and 996 transitions. [2022-07-21 04:43:40,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:43:40,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 109 [2022-07-21 04:43:40,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:40,263 INFO L225 Difference]: With dead ends: 647 [2022-07-21 04:43:40,263 INFO L226 Difference]: Without dead ends: 330 [2022-07-21 04:43:40,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 126 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 04:43:40,268 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 125 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1487 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 04:43:40,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1487 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:43:40,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-07-21 04:43:40,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2022-07-21 04:43:40,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 263 states have (on average 1.5475285171102662) internal successors, (407), 265 states have internal predecessors, (407), 49 states have call successors, (49), 16 states have call predecessors, (49), 17 states have return successors, (50), 48 states have call predecessors, (50), 48 states have call successors, (50) [2022-07-21 04:43:40,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 506 transitions. [2022-07-21 04:43:40,304 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 506 transitions. Word has length 109 [2022-07-21 04:43:40,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:40,304 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 506 transitions. [2022-07-21 04:43:40,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-21 04:43:40,305 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 506 transitions. [2022-07-21 04:43:40,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-21 04:43:40,307 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:40,308 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:40,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-21 04:43:40,518 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 04:43:40,519 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:40,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:40,519 INFO L85 PathProgramCache]: Analyzing trace with hash 618315860, now seen corresponding path program 1 times [2022-07-21 04:43:40,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:40,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093611560] [2022-07-21 04:43:40,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:40,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:40,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:40,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:40,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:43:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:40,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:43:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:40,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 04:43:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:40,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:43:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:40,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 04:43:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:40,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 04:43:40,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:40,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 04:43:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:40,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 04:43:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:40,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 04:43:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:40,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 04:43:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:40,646 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-21 04:43:40,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:40,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093611560] [2022-07-21 04:43:40,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093611560] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:43:40,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590659852] [2022-07-21 04:43:40,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:40,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:43:40,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:43:40,648 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 04:43:40,649 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 04:43:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:40,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 04:43:40,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:43:40,897 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-21 04:43:40,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:43:40,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590659852] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:40,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:43:40,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-21 04:43:40,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059836076] [2022-07-21 04:43:40,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:40,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:43:40,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:40,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:43:40,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:43:40,901 INFO L87 Difference]: Start difference. First operand 330 states and 506 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-21 04:43:40,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:40,954 INFO L93 Difference]: Finished difference Result 649 states and 1001 transitions. [2022-07-21 04:43:40,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:43:40,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 110 [2022-07-21 04:43:40,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:40,957 INFO L225 Difference]: With dead ends: 649 [2022-07-21 04:43:40,957 INFO L226 Difference]: Without dead ends: 332 [2022-07-21 04:43:40,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 126 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 04:43:40,959 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 124 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1476 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 04:43:40,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1476 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:43:40,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-07-21 04:43:40,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2022-07-21 04:43:40,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 264 states have (on average 1.5454545454545454) internal successors, (408), 267 states have internal predecessors, (408), 49 states have call successors, (49), 16 states have call predecessors, (49), 18 states have return successors, (55), 48 states have call predecessors, (55), 48 states have call successors, (55) [2022-07-21 04:43:40,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 512 transitions. [2022-07-21 04:43:40,985 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 512 transitions. Word has length 110 [2022-07-21 04:43:40,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:40,987 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 512 transitions. [2022-07-21 04:43:40,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-21 04:43:40,987 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 512 transitions. [2022-07-21 04:43:40,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-21 04:43:40,989 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:40,989 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:41,025 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 04:43:41,199 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 04:43:41,199 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:41,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:41,200 INFO L85 PathProgramCache]: Analyzing trace with hash 231538481, now seen corresponding path program 1 times [2022-07-21 04:43:41,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:41,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982173390] [2022-07-21 04:43:41,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:41,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:41,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:41,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:41,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:41,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:41,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:43:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:41,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:43:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:41,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:43:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:41,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 04:43:41,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:41,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 04:43:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:41,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:43:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:41,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 04:43:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:41,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 04:43:41,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:41,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 04:43:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:41,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 04:43:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:41,281 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-21 04:43:41,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:41,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982173390] [2022-07-21 04:43:41,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982173390] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:41,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:43:41,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:43:41,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925056132] [2022-07-21 04:43:41,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:41,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:43:41,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:41,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:43:41,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:43:41,283 INFO L87 Difference]: Start difference. First operand 332 states and 512 transitions. Second operand has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-21 04:43:42,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:42,339 INFO L93 Difference]: Finished difference Result 742 states and 1149 transitions. [2022-07-21 04:43:42,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 04:43:42,339 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 111 [2022-07-21 04:43:42,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:42,342 INFO L225 Difference]: With dead ends: 742 [2022-07-21 04:43:42,342 INFO L226 Difference]: Without dead ends: 433 [2022-07-21 04:43:42,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 04:43:42,343 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 987 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 1801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:43:42,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1004 Valid, 1306 Invalid, 1801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 1528 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 04:43:42,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-07-21 04:43:42,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 332. [2022-07-21 04:43:42,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 264 states have (on average 1.5454545454545454) internal successors, (408), 267 states have internal predecessors, (408), 49 states have call successors, (49), 16 states have call predecessors, (49), 18 states have return successors, (54), 48 states have call predecessors, (54), 48 states have call successors, (54) [2022-07-21 04:43:42,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 511 transitions. [2022-07-21 04:43:42,360 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 511 transitions. Word has length 111 [2022-07-21 04:43:42,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:42,360 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 511 transitions. [2022-07-21 04:43:42,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-21 04:43:42,360 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 511 transitions. [2022-07-21 04:43:42,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 04:43:42,361 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:42,362 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:42,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 04:43:42,362 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:42,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:42,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1338357194, now seen corresponding path program 2 times [2022-07-21 04:43:42,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:42,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961238457] [2022-07-21 04:43:42,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:42,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:42,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:42,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:42,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:43:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:42,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:43:42,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:42,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:43:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:42,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:43:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:42,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:43:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:42,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 04:43:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:42,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 04:43:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:42,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 04:43:42,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:42,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 04:43:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:42,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 04:43:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:42,435 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-21 04:43:42,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:42,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961238457] [2022-07-21 04:43:42,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961238457] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:42,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:43:42,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:43:42,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870793328] [2022-07-21 04:43:42,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:42,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:43:42,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:42,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:43:42,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:43:42,452 INFO L87 Difference]: Start difference. First operand 332 states and 511 transitions. Second operand has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-21 04:43:43,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:43,501 INFO L93 Difference]: Finished difference Result 744 states and 1152 transitions. [2022-07-21 04:43:43,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 04:43:43,502 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 112 [2022-07-21 04:43:43,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:43,504 INFO L225 Difference]: With dead ends: 744 [2022-07-21 04:43:43,504 INFO L226 Difference]: Without dead ends: 435 [2022-07-21 04:43:43,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 04:43:43,506 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 982 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 1810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:43:43,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [999 Valid, 1307 Invalid, 1810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 1528 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 04:43:43,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-07-21 04:43:43,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 334. [2022-07-21 04:43:43,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 265 states have (on average 1.5433962264150944) internal successors, (409), 269 states have internal predecessors, (409), 49 states have call successors, (49), 16 states have call predecessors, (49), 19 states have return successors, (56), 48 states have call predecessors, (56), 48 states have call successors, (56) [2022-07-21 04:43:43,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 514 transitions. [2022-07-21 04:43:43,528 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 514 transitions. Word has length 112 [2022-07-21 04:43:43,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:43,529 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 514 transitions. [2022-07-21 04:43:43,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-21 04:43:43,529 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 514 transitions. [2022-07-21 04:43:43,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-21 04:43:43,531 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:43,531 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:43,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 04:43:43,531 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:43,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:43,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1357662934, now seen corresponding path program 1 times [2022-07-21 04:43:43,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:43,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856891113] [2022-07-21 04:43:43,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:43,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:43,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:43,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:43,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:43,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:43:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:43,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:43:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:43,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:43:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:43,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:43:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:43,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:43:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:43,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 04:43:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:43,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 04:43:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:43,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 04:43:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:43,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 04:43:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:43,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 04:43:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:43,685 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-21 04:43:43,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:43,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856891113] [2022-07-21 04:43:43,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856891113] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:43,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:43:43,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 04:43:43,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818407476] [2022-07-21 04:43:43,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:43,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 04:43:43,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:43,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 04:43:43,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:43:43,686 INFO L87 Difference]: Start difference. First operand 334 states and 514 transitions. Second operand has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-21 04:43:45,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:45,059 INFO L93 Difference]: Finished difference Result 742 states and 1147 transitions. [2022-07-21 04:43:45,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 04:43:45,060 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 113 [2022-07-21 04:43:45,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:45,062 INFO L225 Difference]: With dead ends: 742 [2022-07-21 04:43:45,062 INFO L226 Difference]: Without dead ends: 435 [2022-07-21 04:43:45,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 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 04:43:45,063 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 1094 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 2748 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 3082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 2748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 04:43:45,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1094 Valid, 1603 Invalid, 3082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 2748 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 04:43:45,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-07-21 04:43:45,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 334. [2022-07-21 04:43:45,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 265 states have (on average 1.5433962264150944) internal successors, (409), 269 states have internal predecessors, (409), 49 states have call successors, (49), 16 states have call predecessors, (49), 19 states have return successors, (55), 48 states have call predecessors, (55), 48 states have call successors, (55) [2022-07-21 04:43:45,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 513 transitions. [2022-07-21 04:43:45,080 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 513 transitions. Word has length 113 [2022-07-21 04:43:45,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:45,080 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 513 transitions. [2022-07-21 04:43:45,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-21 04:43:45,081 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 513 transitions. [2022-07-21 04:43:45,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-21 04:43:45,083 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:45,083 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:45,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 04:43:45,083 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:45,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:45,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1580989753, now seen corresponding path program 2 times [2022-07-21 04:43:45,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:45,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374506063] [2022-07-21 04:43:45,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:45,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:45,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:45,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:45,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:45,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:43:45,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:45,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:43:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:45,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:43:45,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:45,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:43:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:45,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 04:43:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:45,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 04:43:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:45,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 04:43:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:45,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 04:43:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:45,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 04:43:45,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:45,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 04:43:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:45,209 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-21 04:43:45,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:45,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374506063] [2022-07-21 04:43:45,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374506063] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:45,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:43:45,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 04:43:45,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315542774] [2022-07-21 04:43:45,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:45,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 04:43:45,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:45,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 04:43:45,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:43:45,211 INFO L87 Difference]: Start difference. First operand 334 states and 513 transitions. Second operand has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-21 04:43:46,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:46,579 INFO L93 Difference]: Finished difference Result 744 states and 1153 transitions. [2022-07-21 04:43:46,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 04:43:46,580 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 114 [2022-07-21 04:43:46,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:46,582 INFO L225 Difference]: With dead ends: 744 [2022-07-21 04:43:46,582 INFO L226 Difference]: Without dead ends: 437 [2022-07-21 04:43:46,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 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 04:43:46,585 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 1089 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 2772 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 1604 SdHoareTripleChecker+Invalid, 3103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 2772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 04:43:46,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1089 Valid, 1604 Invalid, 3103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 2772 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 04:43:46,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-07-21 04:43:46,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 336. [2022-07-21 04:43:46,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 266 states have (on average 1.5413533834586466) internal successors, (410), 271 states have internal predecessors, (410), 49 states have call successors, (49), 16 states have call predecessors, (49), 20 states have return successors, (60), 48 states have call predecessors, (60), 48 states have call successors, (60) [2022-07-21 04:43:46,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 519 transitions. [2022-07-21 04:43:46,604 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 519 transitions. Word has length 114 [2022-07-21 04:43:46,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:46,605 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 519 transitions. [2022-07-21 04:43:46,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-21 04:43:46,605 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 519 transitions. [2022-07-21 04:43:46,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-21 04:43:46,607 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:46,607 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:46,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 04:43:46,607 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:46,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:46,608 INFO L85 PathProgramCache]: Analyzing trace with hash 823426557, now seen corresponding path program 1 times [2022-07-21 04:43:46,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:46,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814676096] [2022-07-21 04:43:46,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:46,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:46,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:46,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:46,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:43:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:46,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:43:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:46,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:43:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:46,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:43:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:46,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 04:43:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:46,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 04:43:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:46,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 04:43:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:46,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 04:43:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:46,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 04:43:46,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:46,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 04:43:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:46,712 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 04:43:46,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:46,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814676096] [2022-07-21 04:43:46,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814676096] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:46,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:43:46,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:43:46,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617179356] [2022-07-21 04:43:46,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:46,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:43:46,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:46,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:43:46,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:43:46,714 INFO L87 Difference]: Start difference. First operand 336 states and 519 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-21 04:43:47,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:47,764 INFO L93 Difference]: Finished difference Result 746 states and 1156 transitions. [2022-07-21 04:43:47,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 04:43:47,765 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 115 [2022-07-21 04:43:47,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:47,768 INFO L225 Difference]: With dead ends: 746 [2022-07-21 04:43:47,768 INFO L226 Difference]: Without dead ends: 437 [2022-07-21 04:43:47,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-07-21 04:43:47,771 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 984 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 1522 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 1522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:43:47,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 1302 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 1522 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 04:43:47,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-07-21 04:43:47,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 336. [2022-07-21 04:43:47,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 266 states have (on average 1.5413533834586466) internal successors, (410), 271 states have internal predecessors, (410), 49 states have call successors, (49), 16 states have call predecessors, (49), 20 states have return successors, (60), 48 states have call predecessors, (60), 48 states have call successors, (60) [2022-07-21 04:43:47,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 519 transitions. [2022-07-21 04:43:47,791 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 519 transitions. Word has length 115 [2022-07-21 04:43:47,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:47,792 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 519 transitions. [2022-07-21 04:43:47,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-21 04:43:47,792 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 519 transitions. [2022-07-21 04:43:47,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-21 04:43:47,793 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:47,794 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:47,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 04:43:47,794 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:47,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:47,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1790777211, now seen corresponding path program 1 times [2022-07-21 04:43:47,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:47,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971378713] [2022-07-21 04:43:47,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:47,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:47,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:47,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:47,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:47,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:43:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:47,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:43:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:47,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:43:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:47,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:43:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:47,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 04:43:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:47,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 04:43:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:47,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 04:43:47,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:47,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 04:43:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:47,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 04:43:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:47,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 04:43:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:47,895 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-21 04:43:47,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:47,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971378713] [2022-07-21 04:43:47,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971378713] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:43:47,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989235995] [2022-07-21 04:43:47,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:47,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:43:47,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:43:47,897 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 04:43:47,898 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 04:43:48,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:48,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:43:48,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:43:48,130 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-21 04:43:48,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 04:43:48,203 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-21 04:43:48,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989235995] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 04:43:48,203 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 04:43:48,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2022-07-21 04:43:48,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877934055] [2022-07-21 04:43:48,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 04:43:48,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 04:43:48,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:48,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 04:43:48,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:43:48,205 INFO L87 Difference]: Start difference. First operand 336 states and 519 transitions. Second operand has 15 states, 14 states have (on average 8.857142857142858) internal successors, (124), 11 states have internal predecessors, (124), 4 states have call successors, (29), 6 states have call predecessors, (29), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-21 04:43:50,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:50,527 INFO L93 Difference]: Finished difference Result 1423 states and 2380 transitions. [2022-07-21 04:43:50,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 04:43:50,528 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 8.857142857142858) internal successors, (124), 11 states have internal predecessors, (124), 4 states have call successors, (29), 6 states have call predecessors, (29), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) Word has length 115 [2022-07-21 04:43:50,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:50,533 INFO L225 Difference]: With dead ends: 1423 [2022-07-21 04:43:50,533 INFO L226 Difference]: Without dead ends: 1118 [2022-07-21 04:43:50,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2022-07-21 04:43:50,535 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 2788 mSDsluCounter, 2810 mSDsCounter, 0 mSdLazyCounter, 4106 mSolverCounterSat, 983 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2790 SdHoareTripleChecker+Valid, 3456 SdHoareTripleChecker+Invalid, 5089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 983 IncrementalHoareTripleChecker+Valid, 4106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:43:50,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2790 Valid, 3456 Invalid, 5089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [983 Valid, 4106 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-21 04:43:50,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2022-07-21 04:43:50,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 664. [2022-07-21 04:43:50,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 530 states have (on average 1.5867924528301887) internal successors, (841), 535 states have internal predecessors, (841), 113 states have call successors, (113), 16 states have call predecessors, (113), 20 states have return successors, (134), 112 states have call predecessors, (134), 112 states have call successors, (134) [2022-07-21 04:43:50,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1088 transitions. [2022-07-21 04:43:50,586 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1088 transitions. Word has length 115 [2022-07-21 04:43:50,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:50,586 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 1088 transitions. [2022-07-21 04:43:50,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 8.857142857142858) internal successors, (124), 11 states have internal predecessors, (124), 4 states have call successors, (29), 6 states have call predecessors, (29), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-21 04:43:50,586 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1088 transitions. [2022-07-21 04:43:50,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-21 04:43:50,589 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:50,589 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:50,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-21 04:43:50,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:43:50,795 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:50,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:50,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1228091855, now seen corresponding path program 1 times [2022-07-21 04:43:50,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:50,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869448420] [2022-07-21 04:43:50,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:50,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:50,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:50,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:50,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:50,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:43:50,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:50,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:43:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:50,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:43:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:50,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:43:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:50,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 04:43:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:50,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:43:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:50,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 04:43:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:50,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 04:43:50,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:50,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 04:43:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:50,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 04:43:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:50,872 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-21 04:43:50,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:50,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869448420] [2022-07-21 04:43:50,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869448420] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:50,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:43:50,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:43:50,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311524921] [2022-07-21 04:43:50,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:50,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:43:50,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:50,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:43:50,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:43:50,874 INFO L87 Difference]: Start difference. First operand 664 states and 1088 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, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:43:51,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:51,723 INFO L93 Difference]: Finished difference Result 1659 states and 2783 transitions. [2022-07-21 04:43:51,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:43:51,723 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, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 118 [2022-07-21 04:43:51,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:51,728 INFO L225 Difference]: With dead ends: 1659 [2022-07-21 04:43:51,728 INFO L226 Difference]: Without dead ends: 1073 [2022-07-21 04:43:51,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 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 04:43:51,733 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 978 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 04:43:51,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 1170 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 04:43:51,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2022-07-21 04:43:51,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 964. [2022-07-21 04:43:51,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 766 states have (on average 1.6005221932114881) internal successors, (1226), 771 states have internal predecessors, (1226), 177 states have call successors, (177), 16 states have call predecessors, (177), 20 states have return successors, (208), 176 states have call predecessors, (208), 176 states have call successors, (208) [2022-07-21 04:43:51,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1611 transitions. [2022-07-21 04:43:51,786 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1611 transitions. Word has length 118 [2022-07-21 04:43:51,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:51,787 INFO L495 AbstractCegarLoop]: Abstraction has 964 states and 1611 transitions. [2022-07-21 04:43:51,787 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, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:43:51,787 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1611 transitions. [2022-07-21 04:43:51,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-21 04:43:51,790 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:51,791 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:51,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 04:43:51,791 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:51,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:51,791 INFO L85 PathProgramCache]: Analyzing trace with hash -340585153, now seen corresponding path program 1 times [2022-07-21 04:43:51,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:51,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14055445] [2022-07-21 04:43:51,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:51,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:51,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:51,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:51,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:51,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:43:51,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:51,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:43:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:51,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:43:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:51,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:43:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:51,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 04:43:51,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:51,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:43:51,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:51,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 04:43:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:51,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 04:43:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:51,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 04:43:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:51,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-21 04:43:51,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:51,864 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-21 04:43:51,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:51,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14055445] [2022-07-21 04:43:51,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14055445] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:51,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:43:51,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:43:51,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167039601] [2022-07-21 04:43:51,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:51,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:43:51,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:51,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:43:51,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:43:51,866 INFO L87 Difference]: Start difference. First operand 964 states and 1611 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, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:43:52,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:52,689 INFO L93 Difference]: Finished difference Result 2399 states and 4063 transitions. [2022-07-21 04:43:52,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:43:52,689 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, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2022-07-21 04:43:52,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:52,696 INFO L225 Difference]: With dead ends: 2399 [2022-07-21 04:43:52,696 INFO L226 Difference]: Without dead ends: 1566 [2022-07-21 04:43:52,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 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 04:43:52,699 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 975 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 04:43:52,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [990 Valid, 1146 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 04:43:52,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2022-07-21 04:43:52,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1457. [2022-07-21 04:43:52,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1457 states, 1164 states have (on average 1.604810996563574) internal successors, (1868), 1169 states have internal predecessors, (1868), 272 states have call successors, (272), 16 states have call predecessors, (272), 20 states have return successors, (303), 271 states have call predecessors, (303), 271 states have call successors, (303) [2022-07-21 04:43:52,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2443 transitions. [2022-07-21 04:43:52,769 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2443 transitions. Word has length 119 [2022-07-21 04:43:52,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:52,769 INFO L495 AbstractCegarLoop]: Abstraction has 1457 states and 2443 transitions. [2022-07-21 04:43:52,769 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, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:43:52,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2443 transitions. [2022-07-21 04:43:52,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-21 04:43:52,774 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:52,774 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:52,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 04:43:52,775 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:52,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:52,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1853840995, now seen corresponding path program 1 times [2022-07-21 04:43:52,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:52,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058217894] [2022-07-21 04:43:52,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:52,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:52,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:52,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:52,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:52,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:52,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:43:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:52,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:43:52,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:52,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:43:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:52,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:43:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:52,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 04:43:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:52,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 04:43:52,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:52,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 04:43:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:52,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 04:43:52,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:52,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 04:43:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:52,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 04:43:52,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:52,853 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-21 04:43:52,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:52,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058217894] [2022-07-21 04:43:52,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058217894] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:52,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:43:52,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:43:52,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141445532] [2022-07-21 04:43:52,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:52,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:43:52,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:52,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:43:52,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:43:52,855 INFO L87 Difference]: Start difference. First operand 1457 states and 2443 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, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:43:53,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:53,684 INFO L93 Difference]: Finished difference Result 3501 states and 5981 transitions. [2022-07-21 04:43:53,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:43:53,685 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, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2022-07-21 04:43:53,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:53,693 INFO L225 Difference]: With dead ends: 3501 [2022-07-21 04:43:53,694 INFO L226 Difference]: Without dead ends: 2310 [2022-07-21 04:43:53,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 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 04:43:53,697 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 973 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 04:43:53,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 1145 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 04:43:53,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2022-07-21 04:43:53,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 2201. [2022-07-21 04:43:53,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2201 states, 1785 states have (on average 1.6084033613445379) internal successors, (2871), 1790 states have internal predecessors, (2871), 395 states have call successors, (395), 16 states have call predecessors, (395), 20 states have return successors, (442), 394 states have call predecessors, (442), 394 states have call successors, (442) [2022-07-21 04:43:53,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2201 states to 2201 states and 3708 transitions. [2022-07-21 04:43:53,818 INFO L78 Accepts]: Start accepts. Automaton has 2201 states and 3708 transitions. Word has length 120 [2022-07-21 04:43:53,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:53,818 INFO L495 AbstractCegarLoop]: Abstraction has 2201 states and 3708 transitions. [2022-07-21 04:43:53,818 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, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:43:53,818 INFO L276 IsEmpty]: Start isEmpty. Operand 2201 states and 3708 transitions. [2022-07-21 04:43:53,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-21 04:43:53,825 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:53,825 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:53,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 04:43:53,825 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:53,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:53,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1617382594, now seen corresponding path program 1 times [2022-07-21 04:43:53,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:53,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428531089] [2022-07-21 04:43:53,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:53,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:53,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:53,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:53,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:53,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:43:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:53,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:43:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:53,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:43:53,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:53,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:43:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:53,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 04:43:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:53,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 04:43:53,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:53,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 04:43:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:53,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 04:43:53,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:53,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 04:43:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:53,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 04:43:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:53,896 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-21 04:43:53,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:53,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428531089] [2022-07-21 04:43:53,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428531089] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:53,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:43:53,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:43:53,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301489477] [2022-07-21 04:43:53,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:53,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:43:53,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:53,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:43:53,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:43:53,898 INFO L87 Difference]: Start difference. First operand 2201 states and 3708 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, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:43:54,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:54,815 INFO L93 Difference]: Finished difference Result 5210 states and 8961 transitions. [2022-07-21 04:43:54,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:43:54,815 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, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 121 [2022-07-21 04:43:54,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:54,827 INFO L225 Difference]: With dead ends: 5210 [2022-07-21 04:43:54,828 INFO L226 Difference]: Without dead ends: 3494 [2022-07-21 04:43:54,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 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 04:43:54,832 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 971 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 04:43:54,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 1146 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 04:43:54,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3494 states. [2022-07-21 04:43:54,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3494 to 3385. [2022-07-21 04:43:54,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3385 states, 2790 states have (on average 1.610394265232975) internal successors, (4493), 2795 states have internal predecessors, (4493), 574 states have call successors, (574), 16 states have call predecessors, (574), 20 states have return successors, (647), 573 states have call predecessors, (647), 573 states have call successors, (647) [2022-07-21 04:43:55,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3385 states to 3385 states and 5714 transitions. [2022-07-21 04:43:55,002 INFO L78 Accepts]: Start accepts. Automaton has 3385 states and 5714 transitions. Word has length 121 [2022-07-21 04:43:55,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:55,002 INFO L495 AbstractCegarLoop]: Abstraction has 3385 states and 5714 transitions. [2022-07-21 04:43:55,002 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, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:43:55,002 INFO L276 IsEmpty]: Start isEmpty. Operand 3385 states and 5714 transitions. [2022-07-21 04:43:55,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-21 04:43:55,010 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:55,011 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:55,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 04:43:55,011 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:55,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:55,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1042849497, now seen corresponding path program 1 times [2022-07-21 04:43:55,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:55,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384786972] [2022-07-21 04:43:55,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:55,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:55,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:55,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:55,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:43:55,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:55,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:43:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:55,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:43:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:55,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:43:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:55,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 04:43:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:55,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 04:43:55,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:55,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 04:43:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:55,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 04:43:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:55,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 04:43:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:55,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 04:43:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:55,076 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-21 04:43:55,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:55,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384786972] [2022-07-21 04:43:55,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384786972] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:55,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:43:55,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:43:55,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308574281] [2022-07-21 04:43:55,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:55,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:43:55,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:55,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:43:55,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:43:55,078 INFO L87 Difference]: Start difference. First operand 3385 states and 5714 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, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:43:56,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:56,042 INFO L93 Difference]: Finished difference Result 8283 states and 14277 transitions. [2022-07-21 04:43:56,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:43:56,043 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, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 122 [2022-07-21 04:43:56,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:56,067 INFO L225 Difference]: With dead ends: 8283 [2022-07-21 04:43:56,067 INFO L226 Difference]: Without dead ends: 5635 [2022-07-21 04:43:56,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 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 04:43:56,075 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 970 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 04:43:56,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 1170 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 04:43:56,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5635 states. [2022-07-21 04:43:56,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5635 to 5526. [2022-07-21 04:43:56,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5526 states, 4555 states have (on average 1.6024149286498353) internal successors, (7299), 4560 states have internal predecessors, (7299), 950 states have call successors, (950), 16 states have call predecessors, (950), 20 states have return successors, (1067), 949 states have call predecessors, (1067), 949 states have call successors, (1067) [2022-07-21 04:43:56,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5526 states to 5526 states and 9316 transitions. [2022-07-21 04:43:56,369 INFO L78 Accepts]: Start accepts. Automaton has 5526 states and 9316 transitions. Word has length 122 [2022-07-21 04:43:56,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:56,369 INFO L495 AbstractCegarLoop]: Abstraction has 5526 states and 9316 transitions. [2022-07-21 04:43:56,370 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, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:43:56,370 INFO L276 IsEmpty]: Start isEmpty. Operand 5526 states and 9316 transitions. [2022-07-21 04:43:56,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 04:43:56,381 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:56,381 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:56,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 04:43:56,381 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:56,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:56,381 INFO L85 PathProgramCache]: Analyzing trace with hash 168070266, now seen corresponding path program 1 times [2022-07-21 04:43:56,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:56,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193744099] [2022-07-21 04:43:56,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:56,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:56,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:56,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:56,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:43:56,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:56,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:43:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:56,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:43:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:56,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:43:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:56,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:43:56,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:56,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 04:43:56,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:56,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 04:43:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:56,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 04:43:56,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:56,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 04:43:56,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:56,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-21 04:43:56,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:56,476 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-21 04:43:56,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:56,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193744099] [2022-07-21 04:43:56,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193744099] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:56,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:43:56,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:43:56,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523010434] [2022-07-21 04:43:56,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:56,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:43:56,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:56,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:43:56,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:43:56,477 INFO L87 Difference]: Start difference. First operand 5526 states and 9316 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:43:57,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:57,652 INFO L93 Difference]: Finished difference Result 13705 states and 23578 transitions. [2022-07-21 04:43:57,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:43:57,655 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 123 [2022-07-21 04:43:57,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:57,712 INFO L225 Difference]: With dead ends: 13705 [2022-07-21 04:43:57,712 INFO L226 Difference]: Without dead ends: 9318 [2022-07-21 04:43:57,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 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 04:43:57,723 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 968 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 04:43:57,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 1149 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 04:43:57,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9318 states. [2022-07-21 04:43:58,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9318 to 9209. [2022-07-21 04:43:58,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9209 states, 7632 states have (on average 1.5993186582809225) internal successors, (12206), 7637 states have internal predecessors, (12206), 1556 states have call successors, (1556), 16 states have call predecessors, (1556), 20 states have return successors, (1751), 1555 states have call predecessors, (1751), 1555 states have call successors, (1751) [2022-07-21 04:43:58,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9209 states to 9209 states and 15513 transitions. [2022-07-21 04:43:58,168 INFO L78 Accepts]: Start accepts. Automaton has 9209 states and 15513 transitions. Word has length 123 [2022-07-21 04:43:58,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:58,168 INFO L495 AbstractCegarLoop]: Abstraction has 9209 states and 15513 transitions. [2022-07-21 04:43:58,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:43:58,168 INFO L276 IsEmpty]: Start isEmpty. Operand 9209 states and 15513 transitions. [2022-07-21 04:43:58,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-21 04:43:58,183 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:58,183 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:58,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 04:43:58,183 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:58,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:58,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1826424603, now seen corresponding path program 1 times [2022-07-21 04:43:58,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:58,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182269045] [2022-07-21 04:43:58,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:58,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:58,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:58,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:58,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:43:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:58,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:43:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:58,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:43:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:58,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:43:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:58,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:43:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:58,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:43:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:58,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 04:43:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:58,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 04:43:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:58,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 04:43:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:58,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 04:43:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:58,273 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-21 04:43:58,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:58,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182269045] [2022-07-21 04:43:58,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182269045] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:58,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:43:58,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:43:58,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765791535] [2022-07-21 04:43:58,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:58,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:43:58,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:58,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:43:58,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:43:58,275 INFO L87 Difference]: Start difference. First operand 9209 states and 15513 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:43:59,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:59,665 INFO L93 Difference]: Finished difference Result 23889 states and 41019 transitions. [2022-07-21 04:43:59,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:43:59,666 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 124 [2022-07-21 04:43:59,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:59,712 INFO L225 Difference]: With dead ends: 23889 [2022-07-21 04:43:59,712 INFO L226 Difference]: Without dead ends: 16271 [2022-07-21 04:43:59,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 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 04:43:59,732 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 966 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 04:43:59,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 1168 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 04:43:59,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16271 states. [2022-07-21 04:44:00,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16271 to 16162. [2022-07-21 04:44:00,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16162 states, 13382 states have (on average 1.5898968764011359) internal successors, (21276), 13387 states have internal predecessors, (21276), 2759 states have call successors, (2759), 16 states have call predecessors, (2759), 20 states have return successors, (3098), 2758 states have call predecessors, (3098), 2758 states have call successors, (3098) [2022-07-21 04:44:00,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16162 states to 16162 states and 27133 transitions. [2022-07-21 04:44:00,510 INFO L78 Accepts]: Start accepts. Automaton has 16162 states and 27133 transitions. Word has length 124 [2022-07-21 04:44:00,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:44:00,510 INFO L495 AbstractCegarLoop]: Abstraction has 16162 states and 27133 transitions. [2022-07-21 04:44:00,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:44:00,511 INFO L276 IsEmpty]: Start isEmpty. Operand 16162 states and 27133 transitions. [2022-07-21 04:44:00,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-21 04:44:00,530 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:44:00,530 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:44:00,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 04:44:00,531 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:44:00,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:44:00,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1043147481, now seen corresponding path program 1 times [2022-07-21 04:44:00,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:44:00,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990237728] [2022-07-21 04:44:00,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:44:00,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:44:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:00,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:44:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:00,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:44:00,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:00,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:44:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:00,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:44:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:00,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:44:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:00,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:44:00,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:00,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 04:44:00,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:00,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 04:44:00,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:00,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 04:44:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:00,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 04:44:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:00,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 04:44:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:00,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-21 04:44:00,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:00,613 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-21 04:44:00,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:44:00,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990237728] [2022-07-21 04:44:00,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990237728] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:44:00,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:44:00,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:44:00,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435635971] [2022-07-21 04:44:00,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:44:00,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:44:00,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:44:00,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:44:00,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:44:00,616 INFO L87 Difference]: Start difference. First operand 16162 states and 27133 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:44:02,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:44:02,589 INFO L93 Difference]: Finished difference Result 42855 states and 73416 transitions. [2022-07-21 04:44:02,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:44:02,590 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 125 [2022-07-21 04:44:02,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:44:02,665 INFO L225 Difference]: With dead ends: 42855 [2022-07-21 04:44:02,666 INFO L226 Difference]: Without dead ends: 28926 [2022-07-21 04:44:02,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 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 04:44:02,692 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 964 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 04:44:02,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 1146 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 04:44:02,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28926 states. [2022-07-21 04:44:03,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28926 to 28817. [2022-07-21 04:44:03,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28817 states, 23998 states have (on average 1.5852571047587298) internal successors, (38043), 24003 states have internal predecessors, (38043), 4798 states have call successors, (4798), 16 states have call predecessors, (4798), 20 states have return successors, (5411), 4797 states have call predecessors, (5411), 4797 states have call successors, (5411) [2022-07-21 04:44:04,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28817 states to 28817 states and 48252 transitions. [2022-07-21 04:44:04,066 INFO L78 Accepts]: Start accepts. Automaton has 28817 states and 48252 transitions. Word has length 125 [2022-07-21 04:44:04,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:44:04,067 INFO L495 AbstractCegarLoop]: Abstraction has 28817 states and 48252 transitions. [2022-07-21 04:44:04,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:44:04,067 INFO L276 IsEmpty]: Start isEmpty. Operand 28817 states and 48252 transitions. [2022-07-21 04:44:04,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-21 04:44:04,092 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:44:04,092 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:44:04,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 04:44:04,092 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:44:04,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:44:04,093 INFO L85 PathProgramCache]: Analyzing trace with hash -472439741, now seen corresponding path program 1 times [2022-07-21 04:44:04,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:44:04,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873383006] [2022-07-21 04:44:04,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:44:04,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:44:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:04,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:44:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:04,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:44:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:04,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:44:04,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:04,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:44:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:04,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:44:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:04,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:44:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:04,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 04:44:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:04,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 04:44:04,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:04,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 04:44:04,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:04,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 04:44:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:04,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 04:44:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:04,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 04:44:04,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:04,165 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-21 04:44:04,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:44:04,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873383006] [2022-07-21 04:44:04,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873383006] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:44:04,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:44:04,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:44:04,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555991271] [2022-07-21 04:44:04,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:44:04,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:44:04,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:44:04,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:44:04,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:44:04,168 INFO L87 Difference]: Start difference. First operand 28817 states and 48252 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:44:07,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:44:07,351 INFO L93 Difference]: Finished difference Result 78617 states and 133780 transitions. [2022-07-21 04:44:07,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:44:07,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 126 [2022-07-21 04:44:07,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:44:07,527 INFO L225 Difference]: With dead ends: 78617 [2022-07-21 04:44:07,527 INFO L226 Difference]: Without dead ends: 52805 [2022-07-21 04:44:07,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 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 04:44:07,578 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 961 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 04:44:07,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 1162 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 04:44:07,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52805 states. [2022-07-21 04:44:09,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52805 to 52696. [2022-07-21 04:44:10,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52696 states, 44162 states have (on average 1.579321588696164) internal successors, (69746), 44167 states have internal predecessors, (69746), 8513 states have call successors, (8513), 16 states have call predecessors, (8513), 20 states have return successors, (9658), 8512 states have call predecessors, (9658), 8512 states have call successors, (9658) [2022-07-21 04:44:10,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52696 states to 52696 states and 87917 transitions. [2022-07-21 04:44:10,227 INFO L78 Accepts]: Start accepts. Automaton has 52696 states and 87917 transitions. Word has length 126 [2022-07-21 04:44:10,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:44:10,228 INFO L495 AbstractCegarLoop]: Abstraction has 52696 states and 87917 transitions. [2022-07-21 04:44:10,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:44:10,228 INFO L276 IsEmpty]: Start isEmpty. Operand 52696 states and 87917 transitions. [2022-07-21 04:44:10,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-21 04:44:10,251 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:44:10,251 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:44:10,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 04:44:10,252 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:44:10,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:44:10,252 INFO L85 PathProgramCache]: Analyzing trace with hash 2014873017, now seen corresponding path program 1 times [2022-07-21 04:44:10,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:44:10,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136437776] [2022-07-21 04:44:10,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:44:10,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:44:10,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:10,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:44:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:10,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:44:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:10,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:44:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:10,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:44:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:10,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:44:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:10,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:44:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:10,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 04:44:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:10,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 04:44:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:10,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 04:44:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:10,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 04:44:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:10,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 04:44:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:10,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 04:44:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:10,317 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-21 04:44:10,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:44:10,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136437776] [2022-07-21 04:44:10,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136437776] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:44:10,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:44:10,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:44:10,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109886026] [2022-07-21 04:44:10,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:44:10,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:44:10,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:44:10,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:44:10,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:44:10,318 INFO L87 Difference]: Start difference. First operand 52696 states and 87917 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:44:14,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:44:14,892 INFO L93 Difference]: Finished difference Result 98388 states and 167710 transitions. [2022-07-21 04:44:14,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:44:14,893 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 127 [2022-07-21 04:44:14,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:44:15,198 INFO L225 Difference]: With dead ends: 98388 [2022-07-21 04:44:15,199 INFO L226 Difference]: Without dead ends: 98264 [2022-07-21 04:44:15,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 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 04:44:15,250 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 959 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 04:44:15,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 1149 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 04:44:15,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98264 states. [2022-07-21 04:44:20,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98264 to 98155. [2022-07-21 04:44:20,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98155 states, 82822 states have (on average 1.5719615561082805) internal successors, (130193), 82827 states have internal predecessors, (130193), 15312 states have call successors, (15312), 16 states have call predecessors, (15312), 20 states have return successors, (17503), 15311 states have call predecessors, (17503), 15311 states have call successors, (17503) [2022-07-21 04:44:20,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98155 states to 98155 states and 163008 transitions. [2022-07-21 04:44:20,512 INFO L78 Accepts]: Start accepts. Automaton has 98155 states and 163008 transitions. Word has length 127 [2022-07-21 04:44:20,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:44:20,512 INFO L495 AbstractCegarLoop]: Abstraction has 98155 states and 163008 transitions. [2022-07-21 04:44:20,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:44:20,512 INFO L276 IsEmpty]: Start isEmpty. Operand 98155 states and 163008 transitions. [2022-07-21 04:44:20,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-21 04:44:20,535 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:44:20,536 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:44:20,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 04:44:20,536 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:44:20,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:44:20,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1780549020, now seen corresponding path program 1 times [2022-07-21 04:44:20,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:44:20,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198452118] [2022-07-21 04:44:20,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:44:20,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:44:20,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:20,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:44:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:20,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:44:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:20,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:44:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:20,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:44:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:20,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:44:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:20,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:44:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:20,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 04:44:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:20,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 04:44:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:20,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 04:44:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:20,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 04:44:20,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:20,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 04:44:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:20,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 04:44:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:20,606 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-21 04:44:20,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:44:20,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198452118] [2022-07-21 04:44:20,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198452118] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:44:20,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432519062] [2022-07-21 04:44:20,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:44:20,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:44:20,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:44:20,624 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:44:20,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 04:44:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:20,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 1140 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-21 04:44:20,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:44:20,954 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 04:44:20,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 04:44:21,160 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 04:44:21,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432519062] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 04:44:21,161 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 04:44:21,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2022-07-21 04:44:21,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472196262] [2022-07-21 04:44:21,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 04:44:21,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-21 04:44:21,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:44:21,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-21 04:44:21,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2022-07-21 04:44:21,164 INFO L87 Difference]: Start difference. First operand 98155 states and 163008 transitions. Second operand has 21 states, 21 states have (on average 10.238095238095237) internal successors, (215), 16 states have internal predecessors, (215), 4 states have call successors, (39), 10 states have call predecessors, (39), 8 states have return successors, (33), 5 states have call predecessors, (33), 4 states have call successors, (33) [2022-07-21 04:44:32,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:44:32,714 INFO L93 Difference]: Finished difference Result 196785 states and 337637 transitions. [2022-07-21 04:44:32,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-07-21 04:44:32,715 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 10.238095238095237) internal successors, (215), 16 states have internal predecessors, (215), 4 states have call successors, (39), 10 states have call predecessors, (39), 8 states have return successors, (33), 5 states have call predecessors, (33), 4 states have call successors, (33) Word has length 128 [2022-07-21 04:44:32,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:44:33,529 INFO L225 Difference]: With dead ends: 196785 [2022-07-21 04:44:33,530 INFO L226 Difference]: Without dead ends: 196667 [2022-07-21 04:44:33,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1108 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=899, Invalid=3657, Unknown=0, NotChecked=0, Total=4556 [2022-07-21 04:44:33,610 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 3020 mSDsluCounter, 2236 mSDsCounter, 0 mSdLazyCounter, 6474 mSolverCounterSat, 977 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3032 SdHoareTripleChecker+Valid, 2858 SdHoareTripleChecker+Invalid, 7451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 977 IncrementalHoareTripleChecker+Valid, 6474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-21 04:44:33,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3032 Valid, 2858 Invalid, 7451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [977 Valid, 6474 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-21 04:44:33,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196667 states. [2022-07-21 04:44:43,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196667 to 196311. [2022-07-21 04:44:43,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196311 states, 165647 states have (on average 1.5719693082277373) internal successors, (260392), 165654 states have internal predecessors, (260392), 30622 states have call successors, (30622), 34 states have call predecessors, (30622), 41 states have return successors, (37184), 30622 states have call predecessors, (37184), 30620 states have call successors, (37184) [2022-07-21 04:44:44,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196311 states to 196311 states and 328198 transitions. [2022-07-21 04:44:44,686 INFO L78 Accepts]: Start accepts. Automaton has 196311 states and 328198 transitions. Word has length 128 [2022-07-21 04:44:44,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:44:44,687 INFO L495 AbstractCegarLoop]: Abstraction has 196311 states and 328198 transitions. [2022-07-21 04:44:44,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.238095238095237) internal successors, (215), 16 states have internal predecessors, (215), 4 states have call successors, (39), 10 states have call predecessors, (39), 8 states have return successors, (33), 5 states have call predecessors, (33), 4 states have call successors, (33) [2022-07-21 04:44:44,687 INFO L276 IsEmpty]: Start isEmpty. Operand 196311 states and 328198 transitions. [2022-07-21 04:44:44,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-21 04:44:44,764 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:44:44,764 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:44:44,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 04:44:44,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:44:44,980 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:44:44,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:44:44,981 INFO L85 PathProgramCache]: Analyzing trace with hash -604992917, now seen corresponding path program 1 times [2022-07-21 04:44:44,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:44:44,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204373852] [2022-07-21 04:44:44,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:44:44,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:44:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:45,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:44:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:45,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:44:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:45,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:44:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:45,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:44:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:45,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:44:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:45,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:44:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:45,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 04:44:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:45,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 04:44:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:45,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 04:44:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:45,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 04:44:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:45,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 04:44:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:45,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-21 04:44:45,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:45,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-21 04:44:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:45,073 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-21 04:44:45,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:44:45,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204373852] [2022-07-21 04:44:45,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204373852] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:44:45,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:44:45,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 04:44:45,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112836491] [2022-07-21 04:44:45,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:44:45,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 04:44:45,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:44:45,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 04:44:45,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-21 04:44:45,075 INFO L87 Difference]: Start difference. First operand 196311 states and 328198 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (15), 7 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13)