./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec11_product15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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_product15.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 34de882518b863b3a10882f7e6c83b5092b3f8512e5800a72c11385e11ff9a6e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 00:43:29,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 00:43:29,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 00:43:29,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 00:43:29,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 00:43:29,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 00:43:29,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 00:43:29,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 00:43:29,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 00:43:29,383 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 00:43:29,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 00:43:29,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 00:43:29,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 00:43:29,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 00:43:29,390 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 00:43:29,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 00:43:29,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 00:43:29,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 00:43:29,394 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 00:43:29,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 00:43:29,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 00:43:29,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 00:43:29,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 00:43:29,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 00:43:29,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 00:43:29,406 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 00:43:29,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 00:43:29,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 00:43:29,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 00:43:29,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 00:43:29,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 00:43:29,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 00:43:29,411 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 00:43:29,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 00:43:29,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 00:43:29,413 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 00:43:29,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 00:43:29,414 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 00:43:29,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 00:43:29,414 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 00:43:29,415 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 00:43:29,416 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 00:43:29,444 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 00:43:29,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 00:43:29,445 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 00:43:29,446 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 00:43:29,446 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 00:43:29,446 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 00:43:29,447 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 00:43:29,448 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 00:43:29,448 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 00:43:29,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 00:43:29,449 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 00:43:29,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 00:43:29,449 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 00:43:29,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 00:43:29,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 00:43:29,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 00:43:29,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 00:43:29,449 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 00:43:29,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 00:43:29,450 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 00:43:29,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 00:43:29,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 00:43:29,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 00:43:29,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 00:43:29,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 00:43:29,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 00:43:29,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 00:43:29,451 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 00:43:29,451 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 00:43:29,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 00:43:29,451 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 00:43:29,452 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 00:43:29,452 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 00:43:29,452 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34de882518b863b3a10882f7e6c83b5092b3f8512e5800a72c11385e11ff9a6e [2021-12-28 00:43:29,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 00:43:29,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 00:43:29,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 00:43:29,734 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 00:43:29,736 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 00:43:29,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec11_product15.cil.c [2021-12-28 00:43:29,780 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e6ec816b/6ffbc751fa7e44e0b448375fac7aa15d/FLAGacaf9050c [2021-12-28 00:43:30,267 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 00:43:30,272 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec11_product15.cil.c [2021-12-28 00:43:30,293 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e6ec816b/6ffbc751fa7e44e0b448375fac7aa15d/FLAGacaf9050c [2021-12-28 00:43:30,759 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e6ec816b/6ffbc751fa7e44e0b448375fac7aa15d [2021-12-28 00:43:30,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 00:43:30,761 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 00:43:30,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 00:43:30,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 00:43:30,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 00:43:30,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 12:43:30" (1/1) ... [2021-12-28 00:43:30,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2883cc85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:43:30, skipping insertion in model container [2021-12-28 00:43:30,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 12:43:30" (1/1) ... [2021-12-28 00:43:30,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 00:43:30,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 00:43:31,153 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_product15.cil.c[45629,45642] [2021-12-28 00:43:31,238 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 00:43:31,245 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 00:43:31,297 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_product15.cil.c[45629,45642] [2021-12-28 00:43:31,315 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 00:43:31,334 INFO L208 MainTranslator]: Completed translation [2021-12-28 00:43:31,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:43:31 WrapperNode [2021-12-28 00:43:31,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 00:43:31,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 00:43:31,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 00:43:31,336 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 00:43:31,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:43:31" (1/1) ... [2021-12-28 00:43:31,357 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:43:31" (1/1) ... [2021-12-28 00:43:31,387 INFO L137 Inliner]: procedures = 125, calls = 195, calls flagged for inlining = 53, calls inlined = 46, statements flattened = 895 [2021-12-28 00:43:31,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 00:43:31,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 00:43:31,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 00:43:31,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 00:43:31,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:43:31" (1/1) ... [2021-12-28 00:43:31,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:43:31" (1/1) ... [2021-12-28 00:43:31,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:43:31" (1/1) ... [2021-12-28 00:43:31,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:43:31" (1/1) ... [2021-12-28 00:43:31,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:43:31" (1/1) ... [2021-12-28 00:43:31,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:43:31" (1/1) ... [2021-12-28 00:43:31,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:43:31" (1/1) ... [2021-12-28 00:43:31,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 00:43:31,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 00:43:31,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 00:43:31,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 00:43:31,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:43:31" (1/1) ... [2021-12-28 00:43:31,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 00:43:31,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:43:31,487 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) [2021-12-28 00:43:31,504 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 [2021-12-28 00:43:31,530 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-28 00:43:31,530 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-28 00:43:31,530 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-28 00:43:31,530 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-28 00:43:31,530 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-28 00:43:31,530 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-28 00:43:31,531 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-28 00:43:31,531 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-28 00:43:31,531 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-28 00:43:31,531 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-28 00:43:31,531 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-28 00:43:31,531 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-28 00:43:31,531 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-28 00:43:31,531 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-28 00:43:31,531 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-28 00:43:31,531 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-28 00:43:31,531 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-28 00:43:31,531 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-28 00:43:31,531 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-28 00:43:31,531 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-28 00:43:31,531 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-28 00:43:31,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 00:43:31,532 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-28 00:43:31,532 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-28 00:43:31,532 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-28 00:43:31,532 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-28 00:43:31,532 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-28 00:43:31,532 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-28 00:43:31,532 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-28 00:43:31,532 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-28 00:43:31,532 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-28 00:43:31,532 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-28 00:43:31,532 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-28 00:43:31,532 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-28 00:43:31,532 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-28 00:43:31,532 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-28 00:43:31,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 00:43:31,533 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-28 00:43:31,533 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-28 00:43:31,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 00:43:31,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 00:43:31,720 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 00:43:31,721 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 00:43:32,259 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 00:43:32,266 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 00:43:32,266 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 00:43:32,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 12:43:32 BoogieIcfgContainer [2021-12-28 00:43:32,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 00:43:32,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 00:43:32,270 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 00:43:32,272 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 00:43:32,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 12:43:30" (1/3) ... [2021-12-28 00:43:32,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68c48c7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 12:43:32, skipping insertion in model container [2021-12-28 00:43:32,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:43:31" (2/3) ... [2021-12-28 00:43:32,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68c48c7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 12:43:32, skipping insertion in model container [2021-12-28 00:43:32,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 12:43:32" (3/3) ... [2021-12-28 00:43:32,274 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product15.cil.c [2021-12-28 00:43:32,277 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 00:43:32,278 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 00:43:32,312 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 00:43:32,317 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 00:43:32,318 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 00:43:32,334 INFO L276 IsEmpty]: Start isEmpty. Operand has 290 states, 228 states have (on average 1.5394736842105263) internal successors, (351), 232 states have internal predecessors, (351), 42 states have call successors, (42), 18 states have call predecessors, (42), 18 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-12-28 00:43:32,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-28 00:43:32,346 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:32,347 INFO L514 BasicCegarLoop]: 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] [2021-12-28 00:43:32,348 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:32,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:32,352 INFO L85 PathProgramCache]: Analyzing trace with hash -130731673, now seen corresponding path program 1 times [2021-12-28 00:43:32,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:32,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065156812] [2021-12-28 00:43:32,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:32,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:32,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:32,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:32,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:32,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:32,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 00:43:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:32,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 00:43:32,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:32,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 00:43:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:32,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 00:43:32,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:32,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-28 00:43:32,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:32,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 00:43:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:32,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 00:43:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:32,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 00:43:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:32,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 00:43:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:32,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:43:32,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:32,736 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-28 00:43:32,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:32,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065156812] [2021-12-28 00:43:32,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065156812] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:43:32,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624275447] [2021-12-28 00:43:32,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:32,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:43:32,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:43:32,740 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) [2021-12-28 00:43:32,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 00:43:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:32,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 1052 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-28 00:43:33,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:43:33,197 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-28 00:43:33,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:43:33,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624275447] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:33,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:43:33,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-28 00:43:33,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421443624] [2021-12-28 00:43:33,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:33,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 00:43:33,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:33,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 00:43:33,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:43:33,224 INFO L87 Difference]: Start difference. First operand has 290 states, 228 states have (on average 1.5394736842105263) internal successors, (351), 232 states have internal predecessors, (351), 42 states have call successors, (42), 18 states have call predecessors, (42), 18 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:43:33,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:33,262 INFO L93 Difference]: Finished difference Result 426 states and 624 transitions. [2021-12-28 00:43:33,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 00:43:33,263 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 109 [2021-12-28 00:43:33,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:33,274 INFO L225 Difference]: With dead ends: 426 [2021-12-28 00:43:33,275 INFO L226 Difference]: Without dead ends: 283 [2021-12-28 00:43:33,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:43:33,281 INFO L933 BasicCegarLoop]: 431 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, 431 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 [2021-12-28 00:43:33,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:43:33,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-12-28 00:43:33,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2021-12-28 00:43:33,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 222 states have (on average 1.5315315315315314) internal successors, (340), 225 states have internal predecessors, (340), 42 states have call successors, (42), 18 states have call predecessors, (42), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-12-28 00:43:33,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 423 transitions. [2021-12-28 00:43:33,347 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 423 transitions. Word has length 109 [2021-12-28 00:43:33,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:33,349 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 423 transitions. [2021-12-28 00:43:33,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:43:33,350 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 423 transitions. [2021-12-28 00:43:33,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-28 00:43:33,358 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:33,358 INFO L514 BasicCegarLoop]: 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, 1] [2021-12-28 00:43:33,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 00:43:33,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-28 00:43:33,568 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:33,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:33,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1587062791, now seen corresponding path program 1 times [2021-12-28 00:43:33,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:33,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557179765] [2021-12-28 00:43:33,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:33,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:33,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:33,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:33,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:33,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 00:43:33,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:33,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 00:43:33,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:33,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 00:43:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:33,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-28 00:43:33,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:33,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 00:43:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:33,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 00:43:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:33,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 00:43:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:33,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 00:43:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:33,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 00:43:33,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:33,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:43:33,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:33,753 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-28 00:43:33,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:33,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557179765] [2021-12-28 00:43:33,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557179765] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:43:33,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804013607] [2021-12-28 00:43:33,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:33,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:43:33,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:43:33,759 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) [2021-12-28 00:43:33,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 00:43:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:34,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 1053 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 00:43:34,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:43:34,186 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-28 00:43:34,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:43:34,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804013607] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:34,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:43:34,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-28 00:43:34,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092975081] [2021-12-28 00:43:34,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:34,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 00:43:34,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:34,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 00:43:34,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 00:43:34,194 INFO L87 Difference]: Start difference. First operand 283 states and 423 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:43:34,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:34,247 INFO L93 Difference]: Finished difference Result 416 states and 605 transitions. [2021-12-28 00:43:34,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 00:43:34,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 110 [2021-12-28 00:43:34,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:34,252 INFO L225 Difference]: With dead ends: 416 [2021-12-28 00:43:34,255 INFO L226 Difference]: Without dead ends: 286 [2021-12-28 00:43:34,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 00:43:34,259 INFO L933 BasicCegarLoop]: 421 mSDtfsCounter, 1 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 840 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 [2021-12-28 00:43:34,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 840 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:43:34,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-12-28 00:43:34,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 285. [2021-12-28 00:43:34,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 224 states have (on average 1.5267857142857142) internal successors, (342), 227 states have internal predecessors, (342), 42 states have call successors, (42), 18 states have call predecessors, (42), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-12-28 00:43:34,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 425 transitions. [2021-12-28 00:43:34,303 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 425 transitions. Word has length 110 [2021-12-28 00:43:34,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:34,304 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 425 transitions. [2021-12-28 00:43:34,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:43:34,305 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 425 transitions. [2021-12-28 00:43:34,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-28 00:43:34,308 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:34,309 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:43:34,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 00:43:34,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-28 00:43:34,528 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:34,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:34,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1218993074, now seen corresponding path program 1 times [2021-12-28 00:43:34,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:34,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674618019] [2021-12-28 00:43:34,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:34,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:34,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:34,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:34,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:34,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 00:43:34,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:34,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 00:43:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:34,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 00:43:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:34,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-28 00:43:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:34,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 00:43:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:34,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 00:43:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:34,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-28 00:43:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:34,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 00:43:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:34,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-28 00:43:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:34,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:43:34,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:34,662 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-28 00:43:34,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:34,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674618019] [2021-12-28 00:43:34,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674618019] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:43:34,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914573255] [2021-12-28 00:43:34,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:34,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:43:34,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:43:34,664 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) [2021-12-28 00:43:34,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 00:43:34,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:34,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 00:43:34,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:43:35,036 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-28 00:43:35,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:43:35,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914573255] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:35,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:43:35,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-28 00:43:35,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331943021] [2021-12-28 00:43:35,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:35,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 00:43:35,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:35,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 00:43:35,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 00:43:35,041 INFO L87 Difference]: Start difference. First operand 285 states and 425 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:43:35,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:35,067 INFO L93 Difference]: Finished difference Result 600 states and 909 transitions. [2021-12-28 00:43:35,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 00:43:35,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 119 [2021-12-28 00:43:35,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:35,074 INFO L225 Difference]: With dead ends: 600 [2021-12-28 00:43:35,074 INFO L226 Difference]: Without dead ends: 342 [2021-12-28 00:43:35,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 00:43:35,078 INFO L933 BasicCegarLoop]: 438 mSDtfsCounter, 107 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 814 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 [2021-12-28 00:43:35,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 814 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:43:35,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-12-28 00:43:35,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 334. [2021-12-28 00:43:35,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 262 states have (on average 1.5419847328244274) internal successors, (404), 265 states have internal predecessors, (404), 53 states have call successors, (53), 18 states have call predecessors, (53), 18 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2021-12-28 00:43:35,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 509 transitions. [2021-12-28 00:43:35,114 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 509 transitions. Word has length 119 [2021-12-28 00:43:35,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:35,115 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 509 transitions. [2021-12-28 00:43:35,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:43:35,115 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 509 transitions. [2021-12-28 00:43:35,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-28 00:43:35,120 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:35,120 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:43:35,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-28 00:43:35,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:43:35,343 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:35,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:35,344 INFO L85 PathProgramCache]: Analyzing trace with hash 953950118, now seen corresponding path program 1 times [2021-12-28 00:43:35,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:35,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238964339] [2021-12-28 00:43:35,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:35,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:35,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:35,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:35,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:35,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:35,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 00:43:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:35,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 00:43:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:35,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 00:43:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:35,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 00:43:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:35,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 00:43:35,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:35,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 00:43:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:35,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 00:43:35,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:35,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 00:43:35,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:35,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 00:43:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:35,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:43:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:35,513 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-28 00:43:35,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:35,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238964339] [2021-12-28 00:43:35,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238964339] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:43:35,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205225535] [2021-12-28 00:43:35,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:35,515 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:43:35,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:43:35,516 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) [2021-12-28 00:43:35,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 00:43:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:35,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 00:43:35,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:43:35,915 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-28 00:43:35,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:43:35,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205225535] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:35,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:43:35,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-28 00:43:35,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719737517] [2021-12-28 00:43:35,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:35,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 00:43:35,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:35,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 00:43:35,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-28 00:43:35,918 INFO L87 Difference]: Start difference. First operand 334 states and 509 transitions. Second operand has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-28 00:43:35,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:35,961 INFO L93 Difference]: Finished difference Result 659 states and 1008 transitions. [2021-12-28 00:43:35,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 00:43:35,961 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 120 [2021-12-28 00:43:35,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:35,963 INFO L225 Difference]: With dead ends: 659 [2021-12-28 00:43:35,963 INFO L226 Difference]: Without dead ends: 336 [2021-12-28 00:43:35,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:43:35,965 INFO L933 BasicCegarLoop]: 414 mSDtfsCounter, 125 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 00:43:35,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 1512 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:43:35,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-12-28 00:43:35,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2021-12-28 00:43:35,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 263 states have (on average 1.5399239543726235) internal successors, (405), 267 states have internal predecessors, (405), 53 states have call successors, (53), 18 states have call predecessors, (53), 19 states have return successors, (54), 52 states have call predecessors, (54), 52 states have call successors, (54) [2021-12-28 00:43:35,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 512 transitions. [2021-12-28 00:43:35,975 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 512 transitions. Word has length 120 [2021-12-28 00:43:35,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:35,976 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 512 transitions. [2021-12-28 00:43:35,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-28 00:43:35,976 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 512 transitions. [2021-12-28 00:43:35,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-28 00:43:35,977 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:35,978 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:43:35,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 00:43:36,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:43:36,195 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:36,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:36,195 INFO L85 PathProgramCache]: Analyzing trace with hash -573539803, now seen corresponding path program 1 times [2021-12-28 00:43:36,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:36,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160558399] [2021-12-28 00:43:36,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:36,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:36,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:36,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:36,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:36,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:36,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:36,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:43:36,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:36,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-28 00:43:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:36,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 00:43:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:36,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-28 00:43:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:36,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-28 00:43:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:36,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 00:43:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:36,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 00:43:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:36,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 00:43:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:36,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-28 00:43:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:36,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:43:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:36,347 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-28 00:43:36,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:36,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160558399] [2021-12-28 00:43:36,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160558399] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:43:36,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685619943] [2021-12-28 00:43:36,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:36,348 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:43:36,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:43:36,349 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) [2021-12-28 00:43:36,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 00:43:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:36,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 00:43:36,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:43:36,801 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-28 00:43:36,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:43:36,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685619943] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:36,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:43:36,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-28 00:43:36,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606247657] [2021-12-28 00:43:36,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:36,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 00:43:36,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:36,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 00:43:36,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-28 00:43:36,803 INFO L87 Difference]: Start difference. First operand 336 states and 512 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-28 00:43:36,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:36,848 INFO L93 Difference]: Finished difference Result 661 states and 1013 transitions. [2021-12-28 00:43:36,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 00:43:36,849 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 121 [2021-12-28 00:43:36,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:36,850 INFO L225 Difference]: With dead ends: 661 [2021-12-28 00:43:36,850 INFO L226 Difference]: Without dead ends: 338 [2021-12-28 00:43:36,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-28 00:43:36,852 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 124 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 00:43:36,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1501 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:43:36,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-12-28 00:43:36,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2021-12-28 00:43:36,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 264 states have (on average 1.5378787878787878) internal successors, (406), 269 states have internal predecessors, (406), 53 states have call successors, (53), 18 states have call predecessors, (53), 20 states have return successors, (59), 52 states have call predecessors, (59), 52 states have call successors, (59) [2021-12-28 00:43:36,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 518 transitions. [2021-12-28 00:43:36,862 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 518 transitions. Word has length 121 [2021-12-28 00:43:36,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:36,863 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 518 transitions. [2021-12-28 00:43:36,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-28 00:43:36,863 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 518 transitions. [2021-12-28 00:43:36,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-28 00:43:36,865 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:36,865 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:43:36,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-28 00:43:37,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:43:37,084 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:37,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:37,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1250731846, now seen corresponding path program 1 times [2021-12-28 00:43:37,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:37,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152392646] [2021-12-28 00:43:37,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:37,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:37,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:37,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:37,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:37,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:43:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:37,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:43:37,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:37,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 00:43:37,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:37,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 00:43:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:37,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 00:43:37,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:37,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 00:43:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:37,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 00:43:37,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:37,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 00:43:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:37,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 00:43:37,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:37,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:43:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:37,188 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-28 00:43:37,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:37,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152392646] [2021-12-28 00:43:37,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152392646] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:37,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:43:37,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 00:43:37,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557311694] [2021-12-28 00:43:37,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:37,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 00:43:37,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:37,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 00:43:37,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:43:37,190 INFO L87 Difference]: Start difference. First operand 338 states and 518 transitions. Second operand has 9 states, 8 states have (on average 10.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-28 00:43:38,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:38,307 INFO L93 Difference]: Finished difference Result 742 states and 1140 transitions. [2021-12-28 00:43:38,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 00:43:38,308 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 122 [2021-12-28 00:43:38,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:38,310 INFO L225 Difference]: With dead ends: 742 [2021-12-28 00:43:38,310 INFO L226 Difference]: Without dead ends: 427 [2021-12-28 00:43:38,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 00:43:38,312 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 979 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 1285 SdHoareTripleChecker+Invalid, 1773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 00:43:38,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [996 Valid, 1285 Invalid, 1773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-28 00:43:38,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-12-28 00:43:38,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 338. [2021-12-28 00:43:38,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 264 states have (on average 1.5378787878787878) internal successors, (406), 269 states have internal predecessors, (406), 53 states have call successors, (53), 18 states have call predecessors, (53), 20 states have return successors, (58), 52 states have call predecessors, (58), 52 states have call successors, (58) [2021-12-28 00:43:38,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 517 transitions. [2021-12-28 00:43:38,345 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 517 transitions. Word has length 122 [2021-12-28 00:43:38,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:38,345 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 517 transitions. [2021-12-28 00:43:38,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-28 00:43:38,345 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 517 transitions. [2021-12-28 00:43:38,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-28 00:43:38,347 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:38,347 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:43:38,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 00:43:38,347 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:38,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:38,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1587058725, now seen corresponding path program 2 times [2021-12-28 00:43:38,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:38,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746833152] [2021-12-28 00:43:38,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:38,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:38,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:38,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:38,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:38,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:43:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:38,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:43:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:38,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 00:43:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:38,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 00:43:38,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:38,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 00:43:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:38,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 00:43:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:38,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 00:43:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:38,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 00:43:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:38,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 00:43:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:38,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:43:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:38,439 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-28 00:43:38,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:38,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746833152] [2021-12-28 00:43:38,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746833152] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:38,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:43:38,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 00:43:38,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863673334] [2021-12-28 00:43:38,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:38,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 00:43:38,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:38,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 00:43:38,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:43:38,441 INFO L87 Difference]: Start difference. First operand 338 states and 517 transitions. Second operand has 9 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-28 00:43:39,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:39,492 INFO L93 Difference]: Finished difference Result 744 states and 1143 transitions. [2021-12-28 00:43:39,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 00:43:39,493 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 123 [2021-12-28 00:43:39,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:39,496 INFO L225 Difference]: With dead ends: 744 [2021-12-28 00:43:39,496 INFO L226 Difference]: Without dead ends: 429 [2021-12-28 00:43:39,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 00:43:39,500 INFO L933 BasicCegarLoop]: 465 mSDtfsCounter, 989 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1006 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 1769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 00:43:39,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1006 Valid, 1280 Invalid, 1769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-28 00:43:39,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-12-28 00:43:39,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 340. [2021-12-28 00:43:39,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 265 states have (on average 1.5358490566037737) internal successors, (407), 271 states have internal predecessors, (407), 53 states have call successors, (53), 18 states have call predecessors, (53), 21 states have return successors, (60), 52 states have call predecessors, (60), 52 states have call successors, (60) [2021-12-28 00:43:39,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 520 transitions. [2021-12-28 00:43:39,533 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 520 transitions. Word has length 123 [2021-12-28 00:43:39,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:39,533 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 520 transitions. [2021-12-28 00:43:39,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-28 00:43:39,534 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 520 transitions. [2021-12-28 00:43:39,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-28 00:43:39,541 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:39,542 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:43:39,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 00:43:39,542 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:39,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:39,542 INFO L85 PathProgramCache]: Analyzing trace with hash 532459317, now seen corresponding path program 1 times [2021-12-28 00:43:39,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:39,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029197321] [2021-12-28 00:43:39,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:39,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:39,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:39,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:39,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:39,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:39,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:43:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:39,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:43:39,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:39,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:43:39,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:39,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 00:43:39,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:39,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 00:43:39,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:39,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 00:43:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:39,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 00:43:39,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:39,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 00:43:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:39,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-28 00:43:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:39,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:43:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:39,682 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-28 00:43:39,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:39,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029197321] [2021-12-28 00:43:39,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029197321] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:39,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:43:39,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-28 00:43:39,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519481348] [2021-12-28 00:43:39,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:39,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 00:43:39,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:39,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 00:43:39,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-28 00:43:39,685 INFO L87 Difference]: Start difference. First operand 340 states and 520 transitions. Second operand has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 8 states have internal predecessors, (85), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-28 00:43:41,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:41,137 INFO L93 Difference]: Finished difference Result 742 states and 1138 transitions. [2021-12-28 00:43:41,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 00:43:41,138 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 8 states have internal predecessors, (85), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 124 [2021-12-28 00:43:41,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:41,140 INFO L225 Difference]: With dead ends: 742 [2021-12-28 00:43:41,140 INFO L226 Difference]: Without dead ends: 429 [2021-12-28 00:43:41,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-28 00:43:41,142 INFO L933 BasicCegarLoop]: 457 mSDtfsCounter, 1086 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 2644 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 1589 SdHoareTripleChecker+Invalid, 3006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 2644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-28 00:43:41,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1086 Valid, 1589 Invalid, 3006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 2644 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-28 00:43:41,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-12-28 00:43:41,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 340. [2021-12-28 00:43:41,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 265 states have (on average 1.5358490566037737) internal successors, (407), 271 states have internal predecessors, (407), 53 states have call successors, (53), 18 states have call predecessors, (53), 21 states have return successors, (59), 52 states have call predecessors, (59), 52 states have call successors, (59) [2021-12-28 00:43:41,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 519 transitions. [2021-12-28 00:43:41,158 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 519 transitions. Word has length 124 [2021-12-28 00:43:41,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:41,158 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 519 transitions. [2021-12-28 00:43:41,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 8 states have internal predecessors, (85), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-28 00:43:41,159 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 519 transitions. [2021-12-28 00:43:41,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-28 00:43:41,160 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:41,160 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:43:41,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 00:43:41,161 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:41,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:41,161 INFO L85 PathProgramCache]: Analyzing trace with hash 422211000, now seen corresponding path program 2 times [2021-12-28 00:43:41,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:41,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798028319] [2021-12-28 00:43:41,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:41,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:41,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:41,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:41,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:41,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:41,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:41,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:43:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:41,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:43:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:41,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:43:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:41,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 00:43:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:41,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 00:43:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:41,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 00:43:41,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:41,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 00:43:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:41,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 00:43:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:41,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 00:43:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:41,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:43:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:41,262 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-28 00:43:41,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:41,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798028319] [2021-12-28 00:43:41,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798028319] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:41,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:43:41,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-28 00:43:41,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147300557] [2021-12-28 00:43:41,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:41,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 00:43:41,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:41,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 00:43:41,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-28 00:43:41,264 INFO L87 Difference]: Start difference. First operand 340 states and 519 transitions. Second operand has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-28 00:43:42,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:42,654 INFO L93 Difference]: Finished difference Result 744 states and 1144 transitions. [2021-12-28 00:43:42,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 00:43:42,655 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 125 [2021-12-28 00:43:42,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:42,657 INFO L225 Difference]: With dead ends: 744 [2021-12-28 00:43:42,657 INFO L226 Difference]: Without dead ends: 431 [2021-12-28 00:43:42,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-28 00:43:42,660 INFO L933 BasicCegarLoop]: 458 mSDtfsCounter, 1081 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 2668 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 3026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 2668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-28 00:43:42,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1081 Valid, 1590 Invalid, 3026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 2668 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-28 00:43:42,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-12-28 00:43:42,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 342. [2021-12-28 00:43:42,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 266 states have (on average 1.5338345864661653) internal successors, (408), 273 states have internal predecessors, (408), 53 states have call successors, (53), 18 states have call predecessors, (53), 22 states have return successors, (64), 52 states have call predecessors, (64), 52 states have call successors, (64) [2021-12-28 00:43:42,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 525 transitions. [2021-12-28 00:43:42,695 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 525 transitions. Word has length 125 [2021-12-28 00:43:42,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:42,695 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 525 transitions. [2021-12-28 00:43:42,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-28 00:43:42,696 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 525 transitions. [2021-12-28 00:43:42,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-28 00:43:42,697 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:42,697 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:43:42,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 00:43:42,697 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:42,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:42,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1806801298, now seen corresponding path program 1 times [2021-12-28 00:43:42,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:42,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512253583] [2021-12-28 00:43:42,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:42,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:42,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:42,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:42,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:42,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:43:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:42,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:43:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:42,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:43:42,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:42,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-28 00:43:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:42,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 00:43:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:42,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 00:43:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:42,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 00:43:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:42,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 00:43:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:42,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-28 00:43:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:42,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:43:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:42,795 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-28 00:43:42,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:42,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512253583] [2021-12-28 00:43:42,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512253583] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:42,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:43:42,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 00:43:42,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064369377] [2021-12-28 00:43:42,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:42,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 00:43:42,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:42,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 00:43:42,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:43:42,797 INFO L87 Difference]: Start difference. First operand 342 states and 525 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-28 00:43:43,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:43,820 INFO L93 Difference]: Finished difference Result 746 states and 1147 transitions. [2021-12-28 00:43:43,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 00:43:43,821 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 126 [2021-12-28 00:43:43,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:43,823 INFO L225 Difference]: With dead ends: 746 [2021-12-28 00:43:43,823 INFO L226 Difference]: Without dead ends: 431 [2021-12-28 00:43:43,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-12-28 00:43:43,832 INFO L933 BasicCegarLoop]: 460 mSDtfsCounter, 994 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 1434 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 1755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 00:43:43,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1011 Valid, 1273 Invalid, 1755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1434 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-28 00:43:43,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-12-28 00:43:43,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 342. [2021-12-28 00:43:43,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 266 states have (on average 1.5338345864661653) internal successors, (408), 273 states have internal predecessors, (408), 53 states have call successors, (53), 18 states have call predecessors, (53), 22 states have return successors, (64), 52 states have call predecessors, (64), 52 states have call successors, (64) [2021-12-28 00:43:43,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 525 transitions. [2021-12-28 00:43:43,848 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 525 transitions. Word has length 126 [2021-12-28 00:43:43,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:43,848 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 525 transitions. [2021-12-28 00:43:43,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-28 00:43:43,849 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 525 transitions. [2021-12-28 00:43:43,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-28 00:43:43,850 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:43,850 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:43:43,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 00:43:43,850 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:43,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:43,851 INFO L85 PathProgramCache]: Analyzing trace with hash 921408048, now seen corresponding path program 1 times [2021-12-28 00:43:43,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:43,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213845057] [2021-12-28 00:43:43,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:43,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:43,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:43,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:43,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:43,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:43:43,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:43,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:43:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:43,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:43:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:43,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-28 00:43:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:43,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 00:43:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:43,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 00:43:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:43,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 00:43:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:43,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 00:43:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:43,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-28 00:43:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:43,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:43:43,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:43,967 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-28 00:43:43,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:43,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213845057] [2021-12-28 00:43:43,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213845057] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:43:43,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894021237] [2021-12-28 00:43:43,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:43,968 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:43:43,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:43:43,984 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) [2021-12-28 00:43:43,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 00:43:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:44,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 00:43:44,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:43:44,375 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 00:43:44,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 00:43:44,584 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 00:43:44,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894021237] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 00:43:44,585 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 00:43:44,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2021-12-28 00:43:44,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841134620] [2021-12-28 00:43:44,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 00:43:44,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-28 00:43:44,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:44,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-28 00:43:44,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-28 00:43:44,587 INFO L87 Difference]: Start difference. First operand 342 states and 525 transitions. Second operand has 15 states, 14 states have (on average 9.785714285714286) internal successors, (137), 11 states have internal predecessors, (137), 4 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2021-12-28 00:43:46,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:46,946 INFO L93 Difference]: Finished difference Result 1423 states and 2371 transitions. [2021-12-28 00:43:46,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-28 00:43:46,946 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 9.785714285714286) internal successors, (137), 11 states have internal predecessors, (137), 4 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) Word has length 126 [2021-12-28 00:43:46,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:46,952 INFO L225 Difference]: With dead ends: 1423 [2021-12-28 00:43:46,952 INFO L226 Difference]: Without dead ends: 1112 [2021-12-28 00:43:46,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-12-28 00:43:46,954 INFO L933 BasicCegarLoop]: 635 mSDtfsCounter, 2477 mSDsluCounter, 2906 mSDsCounter, 0 mSdLazyCounter, 3876 mSolverCounterSat, 981 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2479 SdHoareTripleChecker+Valid, 3541 SdHoareTripleChecker+Invalid, 4857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 981 IncrementalHoareTripleChecker+Valid, 3876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-28 00:43:46,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2479 Valid, 3541 Invalid, 4857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [981 Valid, 3876 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-28 00:43:46,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2021-12-28 00:43:46,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 670. [2021-12-28 00:43:46,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 530 states have (on average 1.5830188679245283) internal successors, (839), 537 states have internal predecessors, (839), 117 states have call successors, (117), 18 states have call predecessors, (117), 22 states have return successors, (138), 116 states have call predecessors, (138), 116 states have call successors, (138) [2021-12-28 00:43:46,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1094 transitions. [2021-12-28 00:43:46,999 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1094 transitions. Word has length 126 [2021-12-28 00:43:46,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:46,999 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 1094 transitions. [2021-12-28 00:43:47,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 9.785714285714286) internal successors, (137), 11 states have internal predecessors, (137), 4 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2021-12-28 00:43:47,000 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1094 transitions. [2021-12-28 00:43:47,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-28 00:43:47,003 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:47,004 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:43:47,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-28 00:43:47,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:43:47,223 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:47,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:47,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1280611105, now seen corresponding path program 1 times [2021-12-28 00:43:47,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:47,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433782076] [2021-12-28 00:43:47,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:47,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:47,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:47,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:47,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:47,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:47,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:43:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:47,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:43:47,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:47,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:43:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:47,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 00:43:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:47,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 00:43:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:47,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 00:43:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:47,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 00:43:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:47,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 00:43:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:47,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 00:43:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:47,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:43:47,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:47,340 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 00:43:47,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:47,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433782076] [2021-12-28 00:43:47,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433782076] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:47,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:43:47,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:43:47,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350815809] [2021-12-28 00:43:47,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:47,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:43:47,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:47,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:43:47,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:43:47,342 INFO L87 Difference]: Start difference. First operand 670 states and 1094 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:43:48,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:48,188 INFO L93 Difference]: Finished difference Result 1659 states and 2774 transitions. [2021-12-28 00:43:48,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:43:48,189 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2021-12-28 00:43:48,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:48,194 INFO L225 Difference]: With dead ends: 1659 [2021-12-28 00:43:48,194 INFO L226 Difference]: Without dead ends: 1067 [2021-12-28 00:43:48,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:43:48,196 INFO L933 BasicCegarLoop]: 502 mSDtfsCounter, 988 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 00:43:48,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1003 Valid, 1147 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-28 00:43:48,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2021-12-28 00:43:48,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 970. [2021-12-28 00:43:48,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 766 states have (on average 1.597911227154047) internal successors, (1224), 773 states have internal predecessors, (1224), 181 states have call successors, (181), 18 states have call predecessors, (181), 22 states have return successors, (212), 180 states have call predecessors, (212), 180 states have call successors, (212) [2021-12-28 00:43:48,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1617 transitions. [2021-12-28 00:43:48,247 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1617 transitions. Word has length 129 [2021-12-28 00:43:48,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:48,248 INFO L470 AbstractCegarLoop]: Abstraction has 970 states and 1617 transitions. [2021-12-28 00:43:48,248 INFO L471 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:43:48,248 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1617 transitions. [2021-12-28 00:43:48,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-28 00:43:48,252 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:48,252 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:43:48,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-28 00:43:48,253 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:48,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:48,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1528960084, now seen corresponding path program 1 times [2021-12-28 00:43:48,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:48,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275619377] [2021-12-28 00:43:48,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:48,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:48,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:48,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:48,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:48,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:43:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:48,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:43:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:48,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:43:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:48,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 00:43:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:48,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 00:43:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:48,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 00:43:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:48,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 00:43:48,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:48,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 00:43:48,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:48,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 00:43:48,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:48,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:43:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:48,343 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 00:43:48,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:48,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275619377] [2021-12-28 00:43:48,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275619377] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:48,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:43:48,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:43:48,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665242927] [2021-12-28 00:43:48,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:48,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:43:48,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:48,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:43:48,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:43:48,345 INFO L87 Difference]: Start difference. First operand 970 states and 1617 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:43:49,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:49,160 INFO L93 Difference]: Finished difference Result 2399 states and 4054 transitions. [2021-12-28 00:43:49,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:43:49,161 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 130 [2021-12-28 00:43:49,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:49,167 INFO L225 Difference]: With dead ends: 2399 [2021-12-28 00:43:49,168 INFO L226 Difference]: Without dead ends: 1560 [2021-12-28 00:43:49,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:43:49,171 INFO L933 BasicCegarLoop]: 483 mSDtfsCounter, 1004 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 00:43:49,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1019 Valid, 1115 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-28 00:43:49,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2021-12-28 00:43:49,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1463. [2021-12-28 00:43:49,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1463 states, 1164 states have (on average 1.6030927835051547) internal successors, (1866), 1171 states have internal predecessors, (1866), 276 states have call successors, (276), 18 states have call predecessors, (276), 22 states have return successors, (307), 275 states have call predecessors, (307), 275 states have call successors, (307) [2021-12-28 00:43:49,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 2449 transitions. [2021-12-28 00:43:49,258 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 2449 transitions. Word has length 130 [2021-12-28 00:43:49,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:49,258 INFO L470 AbstractCegarLoop]: Abstraction has 1463 states and 2449 transitions. [2021-12-28 00:43:49,258 INFO L471 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:43:49,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 2449 transitions. [2021-12-28 00:43:49,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-28 00:43:49,266 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:49,266 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:43:49,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-28 00:43:49,266 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:49,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:49,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1300702513, now seen corresponding path program 1 times [2021-12-28 00:43:49,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:49,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521266576] [2021-12-28 00:43:49,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:49,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:49,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:49,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:49,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:49,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:49,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:49,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:43:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:49,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:43:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:49,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:43:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:49,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 00:43:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:49,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 00:43:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:49,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 00:43:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:49,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 00:43:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:49,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 00:43:49,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:49,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-28 00:43:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:49,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:43:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:49,353 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 00:43:49,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:49,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521266576] [2021-12-28 00:43:49,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521266576] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:49,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:43:49,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:43:49,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268027605] [2021-12-28 00:43:49,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:49,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:43:49,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:49,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:43:49,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:43:49,355 INFO L87 Difference]: Start difference. First operand 1463 states and 2449 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:43:50,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:50,292 INFO L93 Difference]: Finished difference Result 3501 states and 5972 transitions. [2021-12-28 00:43:50,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:43:50,292 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 131 [2021-12-28 00:43:50,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:50,301 INFO L225 Difference]: With dead ends: 3501 [2021-12-28 00:43:50,302 INFO L226 Difference]: Without dead ends: 2304 [2021-12-28 00:43:50,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:43:50,306 INFO L933 BasicCegarLoop]: 493 mSDtfsCounter, 968 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 00:43:50,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [983 Valid, 1120 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-28 00:43:50,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2304 states. [2021-12-28 00:43:50,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2304 to 2207. [2021-12-28 00:43:50,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2207 states, 1785 states have (on average 1.6072829131652662) internal successors, (2869), 1792 states have internal predecessors, (2869), 399 states have call successors, (399), 18 states have call predecessors, (399), 22 states have return successors, (446), 398 states have call predecessors, (446), 398 states have call successors, (446) [2021-12-28 00:43:50,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 3714 transitions. [2021-12-28 00:43:50,468 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 3714 transitions. Word has length 131 [2021-12-28 00:43:50,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:50,469 INFO L470 AbstractCegarLoop]: Abstraction has 2207 states and 3714 transitions. [2021-12-28 00:43:50,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:43:50,469 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 3714 transitions. [2021-12-28 00:43:50,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-28 00:43:50,479 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:50,479 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:43:50,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-28 00:43:50,479 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:50,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:50,480 INFO L85 PathProgramCache]: Analyzing trace with hash -190136019, now seen corresponding path program 1 times [2021-12-28 00:43:50,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:50,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414625902] [2021-12-28 00:43:50,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:50,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:50,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:50,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:50,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:50,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:43:50,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:50,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:43:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:50,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:43:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:50,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 00:43:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:50,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 00:43:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:50,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-28 00:43:50,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:50,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 00:43:50,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:50,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 00:43:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:50,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-28 00:43:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:50,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:43:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:50,577 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 00:43:50,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:50,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414625902] [2021-12-28 00:43:50,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414625902] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:50,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:43:50,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:43:50,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097327059] [2021-12-28 00:43:50,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:50,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:43:50,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:50,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:43:50,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:43:50,579 INFO L87 Difference]: Start difference. First operand 2207 states and 3714 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:43:51,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:51,525 INFO L93 Difference]: Finished difference Result 5210 states and 8952 transitions. [2021-12-28 00:43:51,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:43:51,525 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 132 [2021-12-28 00:43:51,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:51,539 INFO L225 Difference]: With dead ends: 5210 [2021-12-28 00:43:51,540 INFO L226 Difference]: Without dead ends: 3488 [2021-12-28 00:43:51,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:43:51,546 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 997 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 00:43:51,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1012 Valid, 1112 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-28 00:43:51,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2021-12-28 00:43:51,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 3391. [2021-12-28 00:43:51,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3391 states, 2790 states have (on average 1.6096774193548387) internal successors, (4491), 2797 states have internal predecessors, (4491), 578 states have call successors, (578), 18 states have call predecessors, (578), 22 states have return successors, (651), 577 states have call predecessors, (651), 577 states have call successors, (651) [2021-12-28 00:43:51,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3391 states to 3391 states and 5720 transitions. [2021-12-28 00:43:51,754 INFO L78 Accepts]: Start accepts. Automaton has 3391 states and 5720 transitions. Word has length 132 [2021-12-28 00:43:51,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:51,754 INFO L470 AbstractCegarLoop]: Abstraction has 3391 states and 5720 transitions. [2021-12-28 00:43:51,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:43:51,755 INFO L276 IsEmpty]: Start isEmpty. Operand 3391 states and 5720 transitions. [2021-12-28 00:43:51,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-28 00:43:51,767 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:51,767 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:43:51,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-28 00:43:51,768 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:51,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:51,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1431730347, now seen corresponding path program 1 times [2021-12-28 00:43:51,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:51,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861858374] [2021-12-28 00:43:51,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:51,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:51,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:51,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:51,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:51,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:51,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:43:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:51,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:43:51,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:51,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:43:51,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:51,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 00:43:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:51,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 00:43:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:51,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 00:43:51,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:51,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 00:43:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:51,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-28 00:43:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:51,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 00:43:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:51,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:43:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:51,851 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 00:43:51,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:51,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861858374] [2021-12-28 00:43:51,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861858374] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:51,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:43:51,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:43:51,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017608616] [2021-12-28 00:43:51,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:51,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:43:51,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:51,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:43:51,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:43:51,853 INFO L87 Difference]: Start difference. First operand 3391 states and 5720 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:43:52,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:52,857 INFO L93 Difference]: Finished difference Result 8283 states and 14268 transitions. [2021-12-28 00:43:52,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:43:52,858 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 133 [2021-12-28 00:43:52,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:52,882 INFO L225 Difference]: With dead ends: 8283 [2021-12-28 00:43:52,882 INFO L226 Difference]: Without dead ends: 5629 [2021-12-28 00:43:52,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:43:52,890 INFO L933 BasicCegarLoop]: 498 mSDtfsCounter, 983 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 00:43:52,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [998 Valid, 1142 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-28 00:43:52,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5629 states. [2021-12-28 00:43:53,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5629 to 5532. [2021-12-28 00:43:53,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5532 states, 4555 states have (on average 1.6019758507135016) internal successors, (7297), 4562 states have internal predecessors, (7297), 954 states have call successors, (954), 18 states have call predecessors, (954), 22 states have return successors, (1071), 953 states have call predecessors, (1071), 953 states have call successors, (1071) [2021-12-28 00:43:53,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5532 states to 5532 states and 9322 transitions. [2021-12-28 00:43:53,201 INFO L78 Accepts]: Start accepts. Automaton has 5532 states and 9322 transitions. Word has length 133 [2021-12-28 00:43:53,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:53,202 INFO L470 AbstractCegarLoop]: Abstraction has 5532 states and 9322 transitions. [2021-12-28 00:43:53,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:43:53,203 INFO L276 IsEmpty]: Start isEmpty. Operand 5532 states and 9322 transitions. [2021-12-28 00:43:53,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-28 00:43:53,218 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:53,218 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:43:53,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-28 00:43:53,219 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:53,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:53,219 INFO L85 PathProgramCache]: Analyzing trace with hash -749720751, now seen corresponding path program 1 times [2021-12-28 00:43:53,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:53,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765222042] [2021-12-28 00:43:53,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:53,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:53,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:53,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:53,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:53,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:43:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:53,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:43:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:53,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:43:53,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:53,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 00:43:53,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:53,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 00:43:53,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:53,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 00:43:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:53,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 00:43:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:53,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-28 00:43:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:53,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 00:43:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:53,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:43:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:53,293 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 00:43:53,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:53,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765222042] [2021-12-28 00:43:53,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765222042] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:53,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:43:53,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:43:53,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580384021] [2021-12-28 00:43:53,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:53,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:43:53,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:53,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:43:53,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:43:53,296 INFO L87 Difference]: Start difference. First operand 5532 states and 9322 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:43:54,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:54,451 INFO L93 Difference]: Finished difference Result 13705 states and 23569 transitions. [2021-12-28 00:43:54,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:43:54,452 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 134 [2021-12-28 00:43:54,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:54,502 INFO L225 Difference]: With dead ends: 13705 [2021-12-28 00:43:54,502 INFO L226 Difference]: Without dead ends: 9312 [2021-12-28 00:43:54,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:43:54,518 INFO L933 BasicCegarLoop]: 490 mSDtfsCounter, 981 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 00:43:54,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [996 Valid, 1122 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 00:43:54,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9312 states. [2021-12-28 00:43:55,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9312 to 9215. [2021-12-28 00:43:55,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9215 states, 7632 states have (on average 1.599056603773585) internal successors, (12204), 7639 states have internal predecessors, (12204), 1560 states have call successors, (1560), 18 states have call predecessors, (1560), 22 states have return successors, (1755), 1559 states have call predecessors, (1755), 1559 states have call successors, (1755) [2021-12-28 00:43:55,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9215 states to 9215 states and 15519 transitions. [2021-12-28 00:43:55,063 INFO L78 Accepts]: Start accepts. Automaton has 9215 states and 15519 transitions. Word has length 134 [2021-12-28 00:43:55,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:55,064 INFO L470 AbstractCegarLoop]: Abstraction has 9215 states and 15519 transitions. [2021-12-28 00:43:55,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:43:55,064 INFO L276 IsEmpty]: Start isEmpty. Operand 9215 states and 15519 transitions. [2021-12-28 00:43:55,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-28 00:43:55,084 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:55,085 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:43:55,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-28 00:43:55,085 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:55,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:55,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1301071539, now seen corresponding path program 1 times [2021-12-28 00:43:55,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:55,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012840509] [2021-12-28 00:43:55,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:55,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:55,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:55,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:55,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:55,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:55,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:55,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:43:55,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:55,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:43:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:55,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:43:55,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:55,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 00:43:55,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:55,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 00:43:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:55,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 00:43:55,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:55,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 00:43:55,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:55,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 00:43:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:55,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-28 00:43:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:55,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:43:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:55,170 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 00:43:55,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:55,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012840509] [2021-12-28 00:43:55,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012840509] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:55,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:43:55,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:43:55,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467225661] [2021-12-28 00:43:55,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:55,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:43:55,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:55,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:43:55,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:43:55,174 INFO L87 Difference]: Start difference. First operand 9215 states and 15519 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:43:56,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:56,652 INFO L93 Difference]: Finished difference Result 23889 states and 41010 transitions. [2021-12-28 00:43:56,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:43:56,656 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 135 [2021-12-28 00:43:56,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:56,784 INFO L225 Difference]: With dead ends: 23889 [2021-12-28 00:43:56,791 INFO L226 Difference]: Without dead ends: 16265 [2021-12-28 00:43:56,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:43:56,849 INFO L933 BasicCegarLoop]: 505 mSDtfsCounter, 972 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 00:43:56,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [987 Valid, 1175 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-28 00:43:56,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16265 states. [2021-12-28 00:43:57,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16265 to 16168. [2021-12-28 00:43:57,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16168 states, 13382 states have (on average 1.5897474219100285) internal successors, (21274), 13389 states have internal predecessors, (21274), 2763 states have call successors, (2763), 18 states have call predecessors, (2763), 22 states have return successors, (3102), 2762 states have call predecessors, (3102), 2762 states have call successors, (3102) [2021-12-28 00:43:57,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16168 states to 16168 states and 27139 transitions. [2021-12-28 00:43:57,789 INFO L78 Accepts]: Start accepts. Automaton has 16168 states and 27139 transitions. Word has length 135 [2021-12-28 00:43:57,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:57,789 INFO L470 AbstractCegarLoop]: Abstraction has 16168 states and 27139 transitions. [2021-12-28 00:43:57,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:43:57,790 INFO L276 IsEmpty]: Start isEmpty. Operand 16168 states and 27139 transitions. [2021-12-28 00:43:57,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-28 00:43:57,818 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:57,818 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:43:57,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-28 00:43:57,818 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:57,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:57,819 INFO L85 PathProgramCache]: Analyzing trace with hash 885036146, now seen corresponding path program 1 times [2021-12-28 00:43:57,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:57,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864235580] [2021-12-28 00:43:57,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:57,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:57,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:57,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:57,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:57,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:57,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:43:57,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:57,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:43:57,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:57,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:43:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:58,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 00:43:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:58,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 00:43:58,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:58,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 00:43:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:58,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 00:43:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:58,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-28 00:43:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:58,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 00:43:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:58,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:43:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:58,022 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 00:43:58,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:58,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864235580] [2021-12-28 00:43:58,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864235580] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:58,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:43:58,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:43:58,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032971424] [2021-12-28 00:43:58,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:58,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:43:58,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:58,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:43:58,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:43:58,024 INFO L87 Difference]: Start difference. First operand 16168 states and 27139 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:43:59,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:59,991 INFO L93 Difference]: Finished difference Result 42855 states and 73407 transitions. [2021-12-28 00:43:59,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:43:59,992 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 136 [2021-12-28 00:43:59,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:44:00,092 INFO L225 Difference]: With dead ends: 42855 [2021-12-28 00:44:00,093 INFO L226 Difference]: Without dead ends: 28920 [2021-12-28 00:44:00,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:44:00,125 INFO L933 BasicCegarLoop]: 493 mSDtfsCounter, 970 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 00:44:00,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [985 Valid, 1121 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-28 00:44:00,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28920 states. [2021-12-28 00:44:01,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28920 to 28823. [2021-12-28 00:44:01,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28823 states, 23998 states have (on average 1.5851737644803734) internal successors, (38041), 24005 states have internal predecessors, (38041), 4802 states have call successors, (4802), 18 states have call predecessors, (4802), 22 states have return successors, (5415), 4801 states have call predecessors, (5415), 4801 states have call successors, (5415) [2021-12-28 00:44:01,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28823 states to 28823 states and 48258 transitions. [2021-12-28 00:44:01,750 INFO L78 Accepts]: Start accepts. Automaton has 28823 states and 48258 transitions. Word has length 136 [2021-12-28 00:44:01,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:44:01,751 INFO L470 AbstractCegarLoop]: Abstraction has 28823 states and 48258 transitions. [2021-12-28 00:44:01,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:44:01,751 INFO L276 IsEmpty]: Start isEmpty. Operand 28823 states and 48258 transitions. [2021-12-28 00:44:01,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-28 00:44:01,779 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:44:01,779 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:44:01,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-28 00:44:01,779 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:44:01,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:44:01,780 INFO L85 PathProgramCache]: Analyzing trace with hash -2028823985, now seen corresponding path program 1 times [2021-12-28 00:44:01,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:44:01,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075810922] [2021-12-28 00:44:01,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:44:01,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:44:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:01,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:44:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:01,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:44:01,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:01,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:44:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:01,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:44:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:01,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:44:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:01,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:44:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:01,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 00:44:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:01,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 00:44:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:01,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 00:44:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:01,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 00:44:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:01,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 00:44:01,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:01,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-28 00:44:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:01,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:44:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:01,874 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 00:44:01,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:44:01,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075810922] [2021-12-28 00:44:01,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075810922] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:44:01,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:44:01,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:44:01,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909166733] [2021-12-28 00:44:01,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:44:01,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:44:01,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:44:01,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:44:01,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:44:01,877 INFO L87 Difference]: Start difference. First operand 28823 states and 48258 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:44:04,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:44:04,749 INFO L93 Difference]: Finished difference Result 78617 states and 133771 transitions. [2021-12-28 00:44:04,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:44:04,750 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 137 [2021-12-28 00:44:04,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:44:04,940 INFO L225 Difference]: With dead ends: 78617 [2021-12-28 00:44:04,940 INFO L226 Difference]: Without dead ends: 52799 [2021-12-28 00:44:05,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:44:05,013 INFO L933 BasicCegarLoop]: 497 mSDtfsCounter, 956 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 00:44:05,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [971 Valid, 1133 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-28 00:44:05,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52799 states. [2021-12-28 00:44:08,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52799 to 52702. [2021-12-28 00:44:08,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52702 states, 44162 states have (on average 1.5792763008921697) internal successors, (69744), 44169 states have internal predecessors, (69744), 8517 states have call successors, (8517), 18 states have call predecessors, (8517), 22 states have return successors, (9662), 8516 states have call predecessors, (9662), 8516 states have call successors, (9662) [2021-12-28 00:44:08,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52702 states to 52702 states and 87923 transitions. [2021-12-28 00:44:08,400 INFO L78 Accepts]: Start accepts. Automaton has 52702 states and 87923 transitions. Word has length 137 [2021-12-28 00:44:08,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:44:08,400 INFO L470 AbstractCegarLoop]: Abstraction has 52702 states and 87923 transitions. [2021-12-28 00:44:08,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:44:08,401 INFO L276 IsEmpty]: Start isEmpty. Operand 52702 states and 87923 transitions. [2021-12-28 00:44:08,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-28 00:44:08,439 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:44:08,439 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:44:08,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-28 00:44:08,439 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:44:08,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:44:08,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1611768206, now seen corresponding path program 1 times [2021-12-28 00:44:08,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:44:08,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089164480] [2021-12-28 00:44:08,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:44:08,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:44:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:08,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:44:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:08,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:44:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:08,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:44:08,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:08,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:44:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:08,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:44:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:08,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:44:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:08,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 00:44:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:08,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 00:44:08,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:08,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 00:44:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:08,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 00:44:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:08,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 00:44:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:08,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-28 00:44:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:08,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:44:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:08,506 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 00:44:08,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:44:08,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089164480] [2021-12-28 00:44:08,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089164480] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:44:08,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:44:08,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:44:08,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453286650] [2021-12-28 00:44:08,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:44:08,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:44:08,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:44:08,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:44:08,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:44:08,509 INFO L87 Difference]: Start difference. First operand 52702 states and 87923 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:44:13,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:44:13,352 INFO L93 Difference]: Finished difference Result 98388 states and 167701 transitions. [2021-12-28 00:44:13,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:44:13,353 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 138 [2021-12-28 00:44:13,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:44:13,695 INFO L225 Difference]: With dead ends: 98388 [2021-12-28 00:44:13,695 INFO L226 Difference]: Without dead ends: 98258 [2021-12-28 00:44:13,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:44:13,749 INFO L933 BasicCegarLoop]: 493 mSDtfsCounter, 966 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 00:44:13,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [981 Valid, 1121 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [366 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-28 00:44:13,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98258 states. [2021-12-28 00:44:19,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98258 to 98161. [2021-12-28 00:44:19,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98161 states, 82822 states have (on average 1.5719374079350896) internal successors, (130191), 82829 states have internal predecessors, (130191), 15316 states have call successors, (15316), 18 states have call predecessors, (15316), 22 states have return successors, (17507), 15315 states have call predecessors, (17507), 15315 states have call successors, (17507) [2021-12-28 00:44:19,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98161 states to 98161 states and 163014 transitions. [2021-12-28 00:44:19,442 INFO L78 Accepts]: Start accepts. Automaton has 98161 states and 163014 transitions. Word has length 138 [2021-12-28 00:44:19,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:44:19,455 INFO L470 AbstractCegarLoop]: Abstraction has 98161 states and 163014 transitions. [2021-12-28 00:44:19,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:44:19,471 INFO L276 IsEmpty]: Start isEmpty. Operand 98161 states and 163014 transitions. [2021-12-28 00:44:19,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-28 00:44:19,523 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:44:19,524 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:44:19,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-28 00:44:19,524 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:44:19,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:44:19,524 INFO L85 PathProgramCache]: Analyzing trace with hash 520143022, now seen corresponding path program 1 times [2021-12-28 00:44:19,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:44:19,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861744524] [2021-12-28 00:44:19,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:44:19,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:44:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:19,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:44:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:19,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:44:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:19,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:44:19,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:19,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:44:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:19,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:44:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:19,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:44:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:19,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 00:44:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:19,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 00:44:19,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:19,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 00:44:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:19,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-28 00:44:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:19,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-28 00:44:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:19,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-28 00:44:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:19,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:44:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:19,698 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-28 00:44:19,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:44:19,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861744524] [2021-12-28 00:44:19,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861744524] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:44:19,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4894233] [2021-12-28 00:44:19,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:44:19,699 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:44:19,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:44:19,716 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) [2021-12-28 00:44:19,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-28 00:44:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:19,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 1149 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-28 00:44:19,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:44:20,472 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-28 00:44:20,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:44:20,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4894233] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:44:20,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:44:20,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 26 [2021-12-28 00:44:20,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374015926] [2021-12-28 00:44:20,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:44:20,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 00:44:20,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:44:20,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 00:44:20,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2021-12-28 00:44:20,474 INFO L87 Difference]: Start difference. First operand 98161 states and 163014 transitions. Second operand has 12 states, 11 states have (on average 9.545454545454545) internal successors, (105), 9 states have internal predecessors, (105), 5 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2021-12-28 00:44:30,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:44:30,542 INFO L93 Difference]: Finished difference Result 195666 states and 330425 transitions. [2021-12-28 00:44:30,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 00:44:30,543 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.545454545454545) internal successors, (105), 9 states have internal predecessors, (105), 5 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 139 [2021-12-28 00:44:30,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:44:31,499 INFO L225 Difference]: With dead ends: 195666 [2021-12-28 00:44:31,499 INFO L226 Difference]: Without dead ends: 195542 [2021-12-28 00:44:31,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=166, Invalid=1166, Unknown=0, NotChecked=0, Total=1332 [2021-12-28 00:44:31,592 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 1167 mSDsluCounter, 3939 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 4509 SdHoareTripleChecker+Invalid, 1302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 00:44:31,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1171 Valid, 4509 Invalid, 1302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 00:44:31,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195542 states.