./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec1_product16.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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_spec1_product16.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8953ac6143780bf628ca2bf650b2a5c9b00061ee3dd80e32fadc01758229df18 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 14:53:28,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 14:53:28,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 14:53:28,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 14:53:28,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 14:53:28,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 14:53:28,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 14:53:28,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 14:53:28,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 14:53:28,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 14:53:28,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 14:53:28,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 14:53:28,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 14:53:28,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 14:53:28,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 14:53:28,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 14:53:28,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 14:53:28,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 14:53:28,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 14:53:28,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 14:53:28,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 14:53:28,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 14:53:28,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 14:53:28,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 14:53:28,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 14:53:28,521 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 14:53:28,521 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 14:53:28,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 14:53:28,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 14:53:28,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 14:53:28,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 14:53:28,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 14:53:28,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 14:53:28,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 14:53:28,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 14:53:28,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 14:53:28,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 14:53:28,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 14:53:28,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 14:53:28,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 14:53:28,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 14:53:28,531 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 14:53:28,557 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 14:53:28,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 14:53:28,558 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 14:53:28,558 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 14:53:28,559 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 14:53:28,559 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 14:53:28,560 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 14:53:28,560 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 14:53:28,560 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 14:53:28,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 14:53:28,561 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 14:53:28,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 14:53:28,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 14:53:28,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 14:53:28,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 14:53:28,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 14:53:28,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 14:53:28,562 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 14:53:28,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 14:53:28,562 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 14:53:28,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 14:53:28,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 14:53:28,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 14:53:28,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 14:53:28,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 14:53:28,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 14:53:28,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 14:53:28,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 14:53:28,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 14:53:28,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 14:53:28,563 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 14:53:28,564 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 14:53:28,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 14:53:28,564 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 14:53:28,564 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8953ac6143780bf628ca2bf650b2a5c9b00061ee3dd80e32fadc01758229df18 [2021-12-17 14:53:28,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 14:53:28,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 14:53:28,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 14:53:28,760 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 14:53:28,760 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 14:53:28,761 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec1_product16.cil.c [2021-12-17 14:53:28,827 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75e2e5fc9/31b330a80bad4cf6890b981fba6640ba/FLAG6e47153fa [2021-12-17 14:53:29,197 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 14:53:29,202 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec1_product16.cil.c [2021-12-17 14:53:29,212 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75e2e5fc9/31b330a80bad4cf6890b981fba6640ba/FLAG6e47153fa [2021-12-17 14:53:29,553 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75e2e5fc9/31b330a80bad4cf6890b981fba6640ba [2021-12-17 14:53:29,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 14:53:29,556 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 14:53:29,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 14:53:29,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 14:53:29,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 14:53:29,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 02:53:29" (1/1) ... [2021-12-17 14:53:29,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74ac97ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:53:29, skipping insertion in model container [2021-12-17 14:53:29,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 02:53:29" (1/1) ... [2021-12-17 14:53:29,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 14:53:29,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 14:53:29,877 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_spec1_product16.cil.c[36116,36129] [2021-12-17 14:53:29,971 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 14:53:29,978 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 14:53:30,016 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_spec1_product16.cil.c[36116,36129] [2021-12-17 14:53:30,042 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 14:53:30,071 INFO L208 MainTranslator]: Completed translation [2021-12-17 14:53:30,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:53:30 WrapperNode [2021-12-17 14:53:30,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 14:53:30,073 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 14:53:30,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 14:53:30,074 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 14:53:30,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:53:30" (1/1) ... [2021-12-17 14:53:30,102 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:53:30" (1/1) ... [2021-12-17 14:53:30,167 INFO L137 Inliner]: procedures = 125, calls = 196, calls flagged for inlining = 56, calls inlined = 51, statements flattened = 980 [2021-12-17 14:53:30,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 14:53:30,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 14:53:30,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 14:53:30,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 14:53:30,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:53:30" (1/1) ... [2021-12-17 14:53:30,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:53:30" (1/1) ... [2021-12-17 14:53:30,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:53:30" (1/1) ... [2021-12-17 14:53:30,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:53:30" (1/1) ... [2021-12-17 14:53:30,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:53:30" (1/1) ... [2021-12-17 14:53:30,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:53:30" (1/1) ... [2021-12-17 14:53:30,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:53:30" (1/1) ... [2021-12-17 14:53:30,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 14:53:30,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 14:53:30,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 14:53:30,229 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 14:53:30,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:53:30" (1/1) ... [2021-12-17 14:53:30,246 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 14:53:30,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:53:30,270 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) [2021-12-17 14:53:30,292 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 [2021-12-17 14:53:30,299 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-17 14:53:30,299 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-17 14:53:30,300 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-17 14:53:30,300 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-17 14:53:30,300 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-17 14:53:30,300 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-17 14:53:30,300 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-17 14:53:30,300 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-17 14:53:30,300 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-17 14:53:30,301 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-17 14:53:30,301 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-17 14:53:30,301 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-17 14:53:30,301 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-17 14:53:30,301 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-17 14:53:30,301 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-17 14:53:30,301 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-17 14:53:30,301 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-17 14:53:30,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 14:53:30,302 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-17 14:53:30,302 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-17 14:53:30,302 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-17 14:53:30,302 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-17 14:53:30,302 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-17 14:53:30,302 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-17 14:53:30,302 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-17 14:53:30,302 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-17 14:53:30,303 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-17 14:53:30,303 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-17 14:53:30,303 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-17 14:53:30,303 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-17 14:53:30,303 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-17 14:53:30,303 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-17 14:53:30,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 14:53:30,303 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-17 14:53:30,304 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-17 14:53:30,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 14:53:30,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 14:53:30,498 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 14:53:30,499 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 14:53:30,953 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 14:53:30,967 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 14:53:30,967 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 14:53:30,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 02:53:30 BoogieIcfgContainer [2021-12-17 14:53:30,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 14:53:30,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 14:53:30,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 14:53:30,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 14:53:30,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 02:53:29" (1/3) ... [2021-12-17 14:53:30,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600ef0c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 02:53:30, skipping insertion in model container [2021-12-17 14:53:30,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:53:30" (2/3) ... [2021-12-17 14:53:30,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600ef0c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 02:53:30, skipping insertion in model container [2021-12-17 14:53:30,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 02:53:30" (3/3) ... [2021-12-17 14:53:30,976 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec1_product16.cil.c [2021-12-17 14:53:30,979 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 14:53:30,979 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 14:53:31,015 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 14:53:31,019 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 [2021-12-17 14:53:31,019 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 14:53:31,041 INFO L276 IsEmpty]: Start isEmpty. Operand has 298 states, 235 states have (on average 1.5361702127659576) internal successors, (361), 239 states have internal predecessors, (361), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-12-17 14:53:31,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-17 14:53:31,051 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:53:31,052 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:53:31,052 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:53:31,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:53:31,056 INFO L85 PathProgramCache]: Analyzing trace with hash 56806197, now seen corresponding path program 1 times [2021-12-17 14:53:31,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:53:31,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824171742] [2021-12-17 14:53:31,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:53:31,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:53:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:31,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:53:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:31,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:53:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:31,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:53:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:31,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 14:53:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:31,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-17 14:53:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:31,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 14:53:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:31,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 14:53:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:31,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-17 14:53:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:31,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 14:53:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:31,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-17 14:53:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:31,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-17 14:53:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:31,436 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-17 14:53:31,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:53:31,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824171742] [2021-12-17 14:53:31,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824171742] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:53:31,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580450709] [2021-12-17 14:53:31,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:53:31,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:53:31,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:53:31,440 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) [2021-12-17 14:53:31,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 14:53:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:31,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-17 14:53:31,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:53:31,816 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-17 14:53:31,816 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:53:31,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580450709] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:53:31,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:53:31,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-17 14:53:31,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868760798] [2021-12-17 14:53:31,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:53:31,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 14:53:31,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:53:31,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 14:53:31,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:53:31,839 INFO L87 Difference]: Start difference. First operand has 298 states, 235 states have (on average 1.5361702127659576) internal successors, (361), 239 states have internal predecessors, (361), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:53:31,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:53:31,883 INFO L93 Difference]: Finished difference Result 442 states and 656 transitions. [2021-12-17 14:53:31,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 14:53:31,886 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 89 [2021-12-17 14:53:31,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:53:31,906 INFO L225 Difference]: With dead ends: 442 [2021-12-17 14:53:31,906 INFO L226 Difference]: Without dead ends: 291 [2021-12-17 14:53:31,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:53:31,939 INFO L933 BasicCegarLoop]: 447 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, 447 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 [2021-12-17 14:53:31,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:53:31,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-12-17 14:53:31,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2021-12-17 14:53:31,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 229 states have (on average 1.5283842794759825) internal successors, (350), 232 states have internal predecessors, (350), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-12-17 14:53:31,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 439 transitions. [2021-12-17 14:53:31,989 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 439 transitions. Word has length 89 [2021-12-17 14:53:31,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:53:31,990 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 439 transitions. [2021-12-17 14:53:31,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:53:31,990 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 439 transitions. [2021-12-17 14:53:31,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-17 14:53:31,994 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:53:31,994 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:53:32,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 14:53:32,201 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 [2021-12-17 14:53:32,201 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:53:32,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:53:32,202 INFO L85 PathProgramCache]: Analyzing trace with hash -774067971, now seen corresponding path program 1 times [2021-12-17 14:53:32,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:53:32,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197842601] [2021-12-17 14:53:32,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:53:32,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:53:32,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:32,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:53:32,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:32,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:53:32,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:32,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:53:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:32,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 14:53:32,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:32,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-17 14:53:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:32,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 14:53:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:32,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-17 14:53:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:32,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 14:53:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:32,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-17 14:53:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:32,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-17 14:53:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:32,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-17 14:53:32,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:32,330 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-17 14:53:32,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:53:32,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197842601] [2021-12-17 14:53:32,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197842601] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:53:32,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772819752] [2021-12-17 14:53:32,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:53:32,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:53:32,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:53:32,338 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) [2021-12-17 14:53:32,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 14:53:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:32,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 14:53:32,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:53:32,657 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-17 14:53:32,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:53:32,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772819752] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:53:32,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:53:32,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-17 14:53:32,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322621366] [2021-12-17 14:53:32,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:53:32,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 14:53:32,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:53:32,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 14:53:32,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:53:32,673 INFO L87 Difference]: Start difference. First operand 291 states and 439 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:53:32,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:53:32,710 INFO L93 Difference]: Finished difference Result 432 states and 637 transitions. [2021-12-17 14:53:32,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 14:53:32,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 90 [2021-12-17 14:53:32,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:53:32,716 INFO L225 Difference]: With dead ends: 432 [2021-12-17 14:53:32,716 INFO L226 Difference]: Without dead ends: 294 [2021-12-17 14:53:32,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:53:32,717 INFO L933 BasicCegarLoop]: 437 mSDtfsCounter, 1 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 872 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 [2021-12-17 14:53:32,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 872 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:53:32,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-12-17 14:53:32,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 293. [2021-12-17 14:53:32,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 231 states have (on average 1.5238095238095237) internal successors, (352), 234 states have internal predecessors, (352), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-12-17 14:53:32,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 441 transitions. [2021-12-17 14:53:32,732 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 441 transitions. Word has length 90 [2021-12-17 14:53:32,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:53:32,732 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 441 transitions. [2021-12-17 14:53:32,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:53:32,732 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 441 transitions. [2021-12-17 14:53:32,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-17 14:53:32,734 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:53:32,735 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:53:32,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 14:53:32,943 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 [2021-12-17 14:53:32,943 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:53:32,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:53:32,944 INFO L85 PathProgramCache]: Analyzing trace with hash 232109862, now seen corresponding path program 1 times [2021-12-17 14:53:32,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:53:32,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355887052] [2021-12-17 14:53:32,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:53:32,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:53:32,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:32,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:53:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:33,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:53:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:33,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:53:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:33,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 14:53:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:33,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-17 14:53:33,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:33,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 14:53:33,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:33,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 14:53:33,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:33,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-17 14:53:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:33,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-17 14:53:33,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:33,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-17 14:53:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:33,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-17 14:53:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:33,067 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-17 14:53:33,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:53:33,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355887052] [2021-12-17 14:53:33,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355887052] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:53:33,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534506473] [2021-12-17 14:53:33,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:53:33,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:53:33,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:53:33,071 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) [2021-12-17 14:53:33,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 14:53:33,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:33,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 962 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-17 14:53:33,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:53:33,404 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-17 14:53:33,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:53:33,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534506473] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:53:33,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:53:33,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-17 14:53:33,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433162427] [2021-12-17 14:53:33,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:53:33,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 14:53:33,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:53:33,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 14:53:33,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:53:33,407 INFO L87 Difference]: Start difference. First operand 293 states and 441 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:53:33,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:53:33,432 INFO L93 Difference]: Finished difference Result 616 states and 941 transitions. [2021-12-17 14:53:33,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 14:53:33,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 96 [2021-12-17 14:53:33,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:53:33,437 INFO L225 Difference]: With dead ends: 616 [2021-12-17 14:53:33,437 INFO L226 Difference]: Without dead ends: 350 [2021-12-17 14:53:33,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:53:33,440 INFO L933 BasicCegarLoop]: 454 mSDtfsCounter, 107 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 845 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 [2021-12-17 14:53:33,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 845 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:53:33,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-12-17 14:53:33,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 342. [2021-12-17 14:53:33,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 269 states have (on average 1.5390334572490707) internal successors, (414), 272 states have internal predecessors, (414), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2021-12-17 14:53:33,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 525 transitions. [2021-12-17 14:53:33,471 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 525 transitions. Word has length 96 [2021-12-17 14:53:33,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:53:33,473 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 525 transitions. [2021-12-17 14:53:33,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:53:33,473 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 525 transitions. [2021-12-17 14:53:33,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 14:53:33,477 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:53:33,477 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:53:33,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-17 14:53:33,693 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 [2021-12-17 14:53:33,694 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:53:33,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:53:33,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1191161156, now seen corresponding path program 1 times [2021-12-17 14:53:33,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:53:33,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390332773] [2021-12-17 14:53:33,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:53:33,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:53:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:33,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:53:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:33,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:53:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:33,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:53:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:33,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 14:53:33,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:33,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-17 14:53:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:33,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 14:53:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:33,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-17 14:53:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:33,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 14:53:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:33,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-17 14:53:33,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:33,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-17 14:53:33,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:33,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-17 14:53:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:33,807 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-17 14:53:33,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:53:33,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390332773] [2021-12-17 14:53:33,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390332773] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:53:33,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623588593] [2021-12-17 14:53:33,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:53:33,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:53:33,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:53:33,809 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) [2021-12-17 14:53:33,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-17 14:53:33,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:33,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 969 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-17 14:53:33,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:53:34,133 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-17 14:53:34,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:53:34,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623588593] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:53:34,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:53:34,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-17 14:53:34,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300029943] [2021-12-17 14:53:34,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:53:34,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 14:53:34,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:53:34,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 14:53:34,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 14:53:34,134 INFO L87 Difference]: Start difference. First operand 342 states and 525 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:53:34,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:53:34,184 INFO L93 Difference]: Finished difference Result 675 states and 1040 transitions. [2021-12-17 14:53:34,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 14:53:34,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2021-12-17 14:53:34,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:53:34,187 INFO L225 Difference]: With dead ends: 675 [2021-12-17 14:53:34,187 INFO L226 Difference]: Without dead ends: 344 [2021-12-17 14:53:34,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:53:34,198 INFO L933 BasicCegarLoop]: 430 mSDtfsCounter, 125 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1576 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 [2021-12-17 14:53:34,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 1576 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:53:34,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-12-17 14:53:34,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2021-12-17 14:53:34,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 270 states have (on average 1.537037037037037) internal successors, (415), 274 states have internal predecessors, (415), 56 states have call successors, (56), 16 states have call predecessors, (56), 17 states have return successors, (57), 55 states have call predecessors, (57), 55 states have call successors, (57) [2021-12-17 14:53:34,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 528 transitions. [2021-12-17 14:53:34,208 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 528 transitions. Word has length 97 [2021-12-17 14:53:34,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:53:34,208 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 528 transitions. [2021-12-17 14:53:34,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:53:34,208 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 528 transitions. [2021-12-17 14:53:34,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 14:53:34,209 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:53:34,210 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:53:34,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-17 14:53:34,412 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 [2021-12-17 14:53:34,412 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:53:34,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:53:34,412 INFO L85 PathProgramCache]: Analyzing trace with hash 77511015, now seen corresponding path program 1 times [2021-12-17 14:53:34,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:53:34,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816242139] [2021-12-17 14:53:34,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:53:34,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:53:34,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:34,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:53:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:34,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:53:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:34,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:53:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:34,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:53:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:34,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 14:53:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:34,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-17 14:53:34,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:34,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-17 14:53:34,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:34,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 14:53:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:34,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-17 14:53:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:34,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 14:53:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:34,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-17 14:53:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:34,512 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 14:53:34,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:53:34,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816242139] [2021-12-17 14:53:34,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816242139] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:53:34,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063903535] [2021-12-17 14:53:34,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:53:34,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:53:34,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:53:34,513 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) [2021-12-17 14:53:34,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-17 14:53:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:34,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 970 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-17 14:53:34,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:53:34,857 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-17 14:53:34,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:53:34,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063903535] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:53:34,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:53:34,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-17 14:53:34,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136932472] [2021-12-17 14:53:34,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:53:34,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 14:53:34,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:53:34,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 14:53:34,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-17 14:53:34,858 INFO L87 Difference]: Start difference. First operand 344 states and 528 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:53:34,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:53:34,911 INFO L93 Difference]: Finished difference Result 677 states and 1045 transitions. [2021-12-17 14:53:34,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 14:53:34,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 98 [2021-12-17 14:53:34,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:53:34,913 INFO L225 Difference]: With dead ends: 677 [2021-12-17 14:53:34,913 INFO L226 Difference]: Without dead ends: 346 [2021-12-17 14:53:34,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-17 14:53:34,915 INFO L933 BasicCegarLoop]: 428 mSDtfsCounter, 124 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1565 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 [2021-12-17 14:53:34,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1565 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:53:34,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-12-17 14:53:34,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2021-12-17 14:53:34,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 271 states have (on average 1.5350553505535056) internal successors, (416), 276 states have internal predecessors, (416), 56 states have call successors, (56), 16 states have call predecessors, (56), 18 states have return successors, (62), 55 states have call predecessors, (62), 55 states have call successors, (62) [2021-12-17 14:53:34,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 534 transitions. [2021-12-17 14:53:34,927 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 534 transitions. Word has length 98 [2021-12-17 14:53:34,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:53:34,927 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 534 transitions. [2021-12-17 14:53:34,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:53:34,927 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 534 transitions. [2021-12-17 14:53:34,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-17 14:53:34,929 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:53:34,929 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:53:34,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-17 14:53:35,152 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 [2021-12-17 14:53:35,152 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:53:35,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:53:35,153 INFO L85 PathProgramCache]: Analyzing trace with hash -807330812, now seen corresponding path program 1 times [2021-12-17 14:53:35,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:53:35,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056352399] [2021-12-17 14:53:35,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:53:35,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:53:35,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:35,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:53:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:35,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:53:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:35,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:53:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:35,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:53:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:35,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:53:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:35,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-17 14:53:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:35,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-17 14:53:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:35,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-17 14:53:35,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:35,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-17 14:53:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:35,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-17 14:53:35,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:35,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-17 14:53:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:35,249 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-17 14:53:35,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:53:35,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056352399] [2021-12-17 14:53:35,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056352399] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:53:35,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:53:35,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 14:53:35,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691494832] [2021-12-17 14:53:35,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:53:35,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 14:53:35,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:53:35,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 14:53:35,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:53:35,251 INFO L87 Difference]: Start difference. First operand 346 states and 534 transitions. Second operand has 9 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:53:36,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:53:36,447 INFO L93 Difference]: Finished difference Result 816 states and 1258 transitions. [2021-12-17 14:53:36,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 14:53:36,448 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 99 [2021-12-17 14:53:36,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:53:36,450 INFO L225 Difference]: With dead ends: 816 [2021-12-17 14:53:36,451 INFO L226 Difference]: Without dead ends: 493 [2021-12-17 14:53:36,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 14:53:36,452 INFO L933 BasicCegarLoop]: 555 mSDtfsCounter, 1019 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 1681 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 2042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 1681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:53:36,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1036 Valid, 1579 Invalid, 2042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 1681 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 14:53:36,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2021-12-17 14:53:36,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 346. [2021-12-17 14:53:36,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 271 states have (on average 1.5350553505535056) internal successors, (416), 276 states have internal predecessors, (416), 56 states have call successors, (56), 16 states have call predecessors, (56), 18 states have return successors, (61), 55 states have call predecessors, (61), 55 states have call successors, (61) [2021-12-17 14:53:36,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 533 transitions. [2021-12-17 14:53:36,468 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 533 transitions. Word has length 99 [2021-12-17 14:53:36,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:53:36,469 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 533 transitions. [2021-12-17 14:53:36,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:53:36,469 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 533 transitions. [2021-12-17 14:53:36,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-17 14:53:36,470 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:53:36,470 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:53:36,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 14:53:36,470 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:53:36,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:53:36,471 INFO L85 PathProgramCache]: Analyzing trace with hash -805719347, now seen corresponding path program 2 times [2021-12-17 14:53:36,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:53:36,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105728223] [2021-12-17 14:53:36,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:53:36,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:53:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:36,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:53:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:36,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:53:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:36,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:53:36,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:36,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:53:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:36,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:53:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:36,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:53:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:36,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-17 14:53:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:36,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-17 14:53:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:36,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-17 14:53:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:36,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-17 14:53:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:36,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-17 14:53:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:36,543 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-17 14:53:36,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:53:36,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105728223] [2021-12-17 14:53:36,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105728223] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:53:36,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:53:36,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 14:53:36,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438521414] [2021-12-17 14:53:36,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:53:36,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 14:53:36,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:53:36,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 14:53:36,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:53:36,544 INFO L87 Difference]: Start difference. First operand 346 states and 533 transitions. Second operand has 9 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:53:37,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:53:37,663 INFO L93 Difference]: Finished difference Result 818 states and 1261 transitions. [2021-12-17 14:53:37,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 14:53:37,664 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 100 [2021-12-17 14:53:37,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:53:37,666 INFO L225 Difference]: With dead ends: 818 [2021-12-17 14:53:37,666 INFO L226 Difference]: Without dead ends: 495 [2021-12-17 14:53:37,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 14:53:37,668 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 1014 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 1691 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 2052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 1691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:53:37,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1031 Valid, 1580 Invalid, 2052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 1691 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 14:53:37,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-12-17 14:53:37,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 348. [2021-12-17 14:53:37,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 272 states have (on average 1.5330882352941178) internal successors, (417), 278 states have internal predecessors, (417), 56 states have call successors, (56), 16 states have call predecessors, (56), 19 states have return successors, (63), 55 states have call predecessors, (63), 55 states have call successors, (63) [2021-12-17 14:53:37,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 536 transitions. [2021-12-17 14:53:37,684 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 536 transitions. Word has length 100 [2021-12-17 14:53:37,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:53:37,684 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 536 transitions. [2021-12-17 14:53:37,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:53:37,685 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 536 transitions. [2021-12-17 14:53:37,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-17 14:53:37,686 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:53:37,686 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:53:37,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 14:53:37,686 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:53:37,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:53:37,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1471237417, now seen corresponding path program 1 times [2021-12-17 14:53:37,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:53:37,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812616461] [2021-12-17 14:53:37,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:53:37,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:53:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:37,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:53:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:37,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:53:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:37,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:53:37,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:37,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:53:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:37,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:53:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:37,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:53:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:37,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-17 14:53:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:37,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-17 14:53:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:37,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-17 14:53:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:37,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-17 14:53:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:37,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-17 14:53:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:37,810 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 14:53:37,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:53:37,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812616461] [2021-12-17 14:53:37,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812616461] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:53:37,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:53:37,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 14:53:37,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486988584] [2021-12-17 14:53:37,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:53:37,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 14:53:37,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:53:37,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 14:53:37,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-17 14:53:37,811 INFO L87 Difference]: Start difference. First operand 348 states and 536 transitions. Second operand has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-17 14:53:39,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:53:39,326 INFO L93 Difference]: Finished difference Result 816 states and 1256 transitions. [2021-12-17 14:53:39,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 14:53:39,326 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 101 [2021-12-17 14:53:39,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:53:39,329 INFO L225 Difference]: With dead ends: 816 [2021-12-17 14:53:39,329 INFO L226 Difference]: Without dead ends: 495 [2021-12-17 14:53:39,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-17 14:53:39,330 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 1126 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 3018 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 2036 SdHoareTripleChecker+Invalid, 3430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 3018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 14:53:39,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1126 Valid, 2036 Invalid, 3430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 3018 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 14:53:39,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-12-17 14:53:39,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 348. [2021-12-17 14:53:39,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 272 states have (on average 1.5330882352941178) internal successors, (417), 278 states have internal predecessors, (417), 56 states have call successors, (56), 16 states have call predecessors, (56), 19 states have return successors, (62), 55 states have call predecessors, (62), 55 states have call successors, (62) [2021-12-17 14:53:39,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 535 transitions. [2021-12-17 14:53:39,346 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 535 transitions. Word has length 101 [2021-12-17 14:53:39,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:53:39,347 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 535 transitions. [2021-12-17 14:53:39,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-17 14:53:39,347 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 535 transitions. [2021-12-17 14:53:39,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-17 14:53:39,350 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:53:39,350 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:53:39,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 14:53:39,351 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:53:39,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:53:39,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1244916972, now seen corresponding path program 2 times [2021-12-17 14:53:39,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:53:39,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394447720] [2021-12-17 14:53:39,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:53:39,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:53:39,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:39,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:53:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:39,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:53:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:39,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:53:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:39,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:53:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:39,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:53:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:39,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:53:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:39,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 14:53:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:39,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 14:53:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:39,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-17 14:53:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:39,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 14:53:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:39,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-17 14:53:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:39,450 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 14:53:39,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:53:39,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394447720] [2021-12-17 14:53:39,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394447720] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:53:39,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:53:39,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 14:53:39,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973613573] [2021-12-17 14:53:39,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:53:39,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 14:53:39,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:53:39,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 14:53:39,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-17 14:53:39,452 INFO L87 Difference]: Start difference. First operand 348 states and 535 transitions. Second operand has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-17 14:53:40,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:53:40,961 INFO L93 Difference]: Finished difference Result 818 states and 1262 transitions. [2021-12-17 14:53:40,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 14:53:40,962 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 102 [2021-12-17 14:53:40,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:53:40,964 INFO L225 Difference]: With dead ends: 818 [2021-12-17 14:53:40,964 INFO L226 Difference]: Without dead ends: 497 [2021-12-17 14:53:40,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-17 14:53:40,965 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 1121 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 3042 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 2037 SdHoareTripleChecker+Invalid, 3455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 3042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 14:53:40,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1121 Valid, 2037 Invalid, 3455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 3042 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 14:53:40,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-12-17 14:53:40,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 350. [2021-12-17 14:53:40,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 273 states have (on average 1.531135531135531) internal successors, (418), 280 states have internal predecessors, (418), 56 states have call successors, (56), 16 states have call predecessors, (56), 20 states have return successors, (67), 55 states have call predecessors, (67), 55 states have call successors, (67) [2021-12-17 14:53:40,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 541 transitions. [2021-12-17 14:53:40,981 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 541 transitions. Word has length 102 [2021-12-17 14:53:40,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:53:40,981 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 541 transitions. [2021-12-17 14:53:40,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-17 14:53:40,982 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 541 transitions. [2021-12-17 14:53:40,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-17 14:53:40,983 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:53:40,983 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:53:40,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 14:53:40,983 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:53:40,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:53:40,984 INFO L85 PathProgramCache]: Analyzing trace with hash -74300082, now seen corresponding path program 1 times [2021-12-17 14:53:40,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:53:40,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235481634] [2021-12-17 14:53:40,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:53:40,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:53:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:41,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:53:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:41,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:53:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:41,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:53:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:41,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:53:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:41,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:53:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:41,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:53:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:41,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 14:53:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:41,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-17 14:53:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:41,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-17 14:53:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:41,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-17 14:53:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:41,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 14:53:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:41,076 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 14:53:41,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:53:41,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235481634] [2021-12-17 14:53:41,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235481634] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:53:41,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969182620] [2021-12-17 14:53:41,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:53:41,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:53:41,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:53:41,077 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) [2021-12-17 14:53:41,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-17 14:53:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:41,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-17 14:53:41,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:53:41,413 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 14:53:41,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 14:53:41,575 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 14:53:41,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969182620] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 14:53:41,575 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 14:53:41,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2021-12-17 14:53:41,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513496766] [2021-12-17 14:53:41,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 14:53:41,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 14:53:41,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:53:41,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 14:53:41,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-12-17 14:53:41,578 INFO L87 Difference]: Start difference. First operand 350 states and 541 transitions. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-17 14:53:42,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:53:42,914 INFO L93 Difference]: Finished difference Result 987 states and 1590 transitions. [2021-12-17 14:53:42,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 14:53:42,914 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 103 [2021-12-17 14:53:42,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:53:42,918 INFO L225 Difference]: With dead ends: 987 [2021-12-17 14:53:42,918 INFO L226 Difference]: Without dead ends: 849 [2021-12-17 14:53:42,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-12-17 14:53:42,920 INFO L933 BasicCegarLoop]: 648 mSDtfsCounter, 1324 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 2004 mSolverCounterSat, 516 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 516 IncrementalHoareTripleChecker+Valid, 2004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 14:53:42,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1369 Valid, 2079 Invalid, 2520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [516 Valid, 2004 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 14:53:42,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2021-12-17 14:53:42,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 678. [2021-12-17 14:53:42,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 537 states have (on average 1.5940409683426444) internal successors, (856), 544 states have internal predecessors, (856), 120 states have call successors, (120), 16 states have call predecessors, (120), 20 states have return successors, (141), 119 states have call predecessors, (141), 119 states have call successors, (141) [2021-12-17 14:53:42,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1117 transitions. [2021-12-17 14:53:42,946 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1117 transitions. Word has length 103 [2021-12-17 14:53:42,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:53:42,947 INFO L470 AbstractCegarLoop]: Abstraction has 678 states and 1117 transitions. [2021-12-17 14:53:42,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-17 14:53:42,947 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1117 transitions. [2021-12-17 14:53:42,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-17 14:53:42,950 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:53:42,950 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:53:42,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-17 14:53:43,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:53:43,159 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:53:43,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:53:43,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1454059765, now seen corresponding path program 1 times [2021-12-17 14:53:43,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:53:43,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587756677] [2021-12-17 14:53:43,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:53:43,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:53:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:43,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:53:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:43,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:53:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:43,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:53:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:43,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:53:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:43,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:53:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:43,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:53:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:43,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 14:53:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:43,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-17 14:53:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:43,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-17 14:53:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:43,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-17 14:53:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:43,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-17 14:53:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:43,238 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 14:53:43,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:53:43,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587756677] [2021-12-17 14:53:43,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587756677] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:53:43,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:53:43,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:53:43,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614776856] [2021-12-17 14:53:43,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:53:43,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:53:43,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:53:43,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:53:43,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:53:43,241 INFO L87 Difference]: Start difference. First operand 678 states and 1117 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:53:44,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:53:44,152 INFO L93 Difference]: Finished difference Result 1768 states and 2961 transitions. [2021-12-17 14:53:44,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:53:44,153 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2021-12-17 14:53:44,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:53:44,158 INFO L225 Difference]: With dead ends: 1768 [2021-12-17 14:53:44,158 INFO L226 Difference]: Without dead ends: 1158 [2021-12-17 14:53:44,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:53:44,161 INFO L933 BasicCegarLoop]: 592 mSDtfsCounter, 1010 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 14:53:44,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1025 Valid, 1337 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 14:53:44,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2021-12-17 14:53:44,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1003. [2021-12-17 14:53:44,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 798 states have (on average 1.605263157894737) internal successors, (1281), 805 states have internal predecessors, (1281), 184 states have call successors, (184), 16 states have call predecessors, (184), 20 states have return successors, (215), 183 states have call predecessors, (215), 183 states have call successors, (215) [2021-12-17 14:53:44,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1680 transitions. [2021-12-17 14:53:44,201 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1680 transitions. Word has length 109 [2021-12-17 14:53:44,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:53:44,201 INFO L470 AbstractCegarLoop]: Abstraction has 1003 states and 1680 transitions. [2021-12-17 14:53:44,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:53:44,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1680 transitions. [2021-12-17 14:53:44,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-17 14:53:44,205 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:53:44,205 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:53:44,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 14:53:44,205 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:53:44,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:53:44,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1651482476, now seen corresponding path program 1 times [2021-12-17 14:53:44,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:53:44,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301069498] [2021-12-17 14:53:44,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:53:44,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:53:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:44,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:53:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:44,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:53:44,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:44,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:53:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:44,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:53:44,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:44,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:53:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:44,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:53:44,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:44,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-17 14:53:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:44,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-17 14:53:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:44,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-17 14:53:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:44,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 14:53:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:44,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-17 14:53:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:44,269 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 14:53:44,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:53:44,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301069498] [2021-12-17 14:53:44,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301069498] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:53:44,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:53:44,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:53:44,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854077274] [2021-12-17 14:53:44,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:53:44,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:53:44,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:53:44,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:53:44,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:53:44,271 INFO L87 Difference]: Start difference. First operand 1003 states and 1680 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:53:45,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:53:45,165 INFO L93 Difference]: Finished difference Result 2548 states and 4310 transitions. [2021-12-17 14:53:45,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:53:45,165 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2021-12-17 14:53:45,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:53:45,173 INFO L225 Difference]: With dead ends: 2548 [2021-12-17 14:53:45,173 INFO L226 Difference]: Without dead ends: 1666 [2021-12-17 14:53:45,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:53:45,177 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 1008 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 14:53:45,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1023 Valid, 1314 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 14:53:45,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2021-12-17 14:53:45,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1511. [2021-12-17 14:53:45,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1211 states have (on average 1.611890999174236) internal successors, (1952), 1218 states have internal predecessors, (1952), 279 states have call successors, (279), 16 states have call predecessors, (279), 20 states have return successors, (310), 278 states have call predecessors, (310), 278 states have call successors, (310) [2021-12-17 14:53:45,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 2541 transitions. [2021-12-17 14:53:45,241 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 2541 transitions. Word has length 110 [2021-12-17 14:53:45,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:53:45,241 INFO L470 AbstractCegarLoop]: Abstraction has 1511 states and 2541 transitions. [2021-12-17 14:53:45,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:53:45,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 2541 transitions. [2021-12-17 14:53:45,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-17 14:53:45,246 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:53:45,246 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:53:45,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 14:53:45,246 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:53:45,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:53:45,247 INFO L85 PathProgramCache]: Analyzing trace with hash 225800205, now seen corresponding path program 1 times [2021-12-17 14:53:45,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:53:45,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25901139] [2021-12-17 14:53:45,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:53:45,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:53:45,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:45,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:53:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:45,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:53:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:45,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:53:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:45,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:53:45,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:45,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:53:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:45,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:53:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:45,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-17 14:53:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:45,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-17 14:53:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:45,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 14:53:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:45,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 14:53:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:45,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-17 14:53:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:45,312 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 14:53:45,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:53:45,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25901139] [2021-12-17 14:53:45,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25901139] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:53:45,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:53:45,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:53:45,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951082591] [2021-12-17 14:53:45,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:53:45,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:53:45,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:53:45,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:53:45,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:53:45,314 INFO L87 Difference]: Start difference. First operand 1511 states and 2541 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:53:46,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:53:46,214 INFO L93 Difference]: Finished difference Result 3700 states and 6319 transitions. [2021-12-17 14:53:46,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:53:46,215 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 111 [2021-12-17 14:53:46,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:53:46,225 INFO L225 Difference]: With dead ends: 3700 [2021-12-17 14:53:46,225 INFO L226 Difference]: Without dead ends: 2435 [2021-12-17 14:53:46,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:53:46,230 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 1006 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 14:53:46,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1021 Valid, 1313 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 14:53:46,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2435 states. [2021-12-17 14:53:46,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2435 to 2280. [2021-12-17 14:53:46,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2280 states, 1857 states have (on average 1.617124394184168) internal successors, (3003), 1864 states have internal predecessors, (3003), 402 states have call successors, (402), 16 states have call predecessors, (402), 20 states have return successors, (449), 401 states have call predecessors, (449), 401 states have call successors, (449) [2021-12-17 14:53:46,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 3854 transitions. [2021-12-17 14:53:46,329 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 3854 transitions. Word has length 111 [2021-12-17 14:53:46,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:53:46,330 INFO L470 AbstractCegarLoop]: Abstraction has 2280 states and 3854 transitions. [2021-12-17 14:53:46,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:53:46,330 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 3854 transitions. [2021-12-17 14:53:46,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-17 14:53:46,336 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:53:46,336 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:53:46,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 14:53:46,336 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:53:46,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:53:46,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1877105493, now seen corresponding path program 1 times [2021-12-17 14:53:46,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:53:46,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566205924] [2021-12-17 14:53:46,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:53:46,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:53:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:46,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:53:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:46,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:53:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:46,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:53:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:46,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:53:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:46,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:53:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:46,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:53:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:46,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-17 14:53:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:46,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-17 14:53:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:46,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-17 14:53:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:46,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-17 14:53:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:46,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 14:53:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:46,400 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 14:53:46,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:53:46,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566205924] [2021-12-17 14:53:46,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566205924] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:53:46,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:53:46,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:53:46,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682828627] [2021-12-17 14:53:46,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:53:46,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:53:46,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:53:46,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:53:46,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:53:46,402 INFO L87 Difference]: Start difference. First operand 2280 states and 3854 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:53:47,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:53:47,309 INFO L93 Difference]: Finished difference Result 5494 states and 9453 transitions. [2021-12-17 14:53:47,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:53:47,310 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2021-12-17 14:53:47,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:53:47,325 INFO L225 Difference]: With dead ends: 5494 [2021-12-17 14:53:47,325 INFO L226 Difference]: Without dead ends: 3664 [2021-12-17 14:53:47,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:53:47,330 INFO L933 BasicCegarLoop]: 582 mSDtfsCounter, 1004 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 14:53:47,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1019 Valid, 1307 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 14:53:47,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3664 states. [2021-12-17 14:53:47,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3664 to 3509. [2021-12-17 14:53:47,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3509 states, 2907 states have (on average 1.6202270381836945) internal successors, (4710), 2914 states have internal predecessors, (4710), 581 states have call successors, (581), 16 states have call predecessors, (581), 20 states have return successors, (654), 580 states have call predecessors, (654), 580 states have call successors, (654) [2021-12-17 14:53:47,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3509 states to 3509 states and 5945 transitions. [2021-12-17 14:53:47,501 INFO L78 Accepts]: Start accepts. Automaton has 3509 states and 5945 transitions. Word has length 112 [2021-12-17 14:53:47,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:53:47,501 INFO L470 AbstractCegarLoop]: Abstraction has 3509 states and 5945 transitions. [2021-12-17 14:53:47,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:53:47,502 INFO L276 IsEmpty]: Start isEmpty. Operand 3509 states and 5945 transitions. [2021-12-17 14:53:47,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 14:53:47,509 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:53:47,509 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:53:47,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 14:53:47,510 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:53:47,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:53:47,510 INFO L85 PathProgramCache]: Analyzing trace with hash 463786281, now seen corresponding path program 1 times [2021-12-17 14:53:47,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:53:47,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218193924] [2021-12-17 14:53:47,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:53:47,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:53:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:47,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:53:47,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:47,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:53:47,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:47,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:53:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:47,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:53:47,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:47,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:53:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:47,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:53:47,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:47,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-17 14:53:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:47,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 14:53:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:47,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-17 14:53:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:47,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 14:53:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:47,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 14:53:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:47,578 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 14:53:47,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:53:47,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218193924] [2021-12-17 14:53:47,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218193924] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:53:47,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:53:47,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:53:47,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842785177] [2021-12-17 14:53:47,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:53:47,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:53:47,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:53:47,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:53:47,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:53:47,580 INFO L87 Difference]: Start difference. First operand 3509 states and 5945 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:53:48,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:53:48,546 INFO L93 Difference]: Finished difference Result 8442 states and 14600 transitions. [2021-12-17 14:53:48,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:53:48,547 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 113 [2021-12-17 14:53:48,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:53:48,568 INFO L225 Difference]: With dead ends: 8442 [2021-12-17 14:53:48,568 INFO L226 Difference]: Without dead ends: 5695 [2021-12-17 14:53:48,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:53:48,575 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 1002 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 14:53:48,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1017 Valid, 1322 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 14:53:48,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5695 states. [2021-12-17 14:53:48,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5695 to 5540. [2021-12-17 14:53:48,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5540 states, 4562 states have (on average 1.6137658921525646) internal successors, (7362), 4569 states have internal predecessors, (7362), 957 states have call successors, (957), 16 states have call predecessors, (957), 20 states have return successors, (1074), 956 states have call predecessors, (1074), 956 states have call successors, (1074) [2021-12-17 14:53:48,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5540 states to 5540 states and 9393 transitions. [2021-12-17 14:53:48,812 INFO L78 Accepts]: Start accepts. Automaton has 5540 states and 9393 transitions. Word has length 113 [2021-12-17 14:53:48,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:53:48,813 INFO L470 AbstractCegarLoop]: Abstraction has 5540 states and 9393 transitions. [2021-12-17 14:53:48,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:53:48,813 INFO L276 IsEmpty]: Start isEmpty. Operand 5540 states and 9393 transitions. [2021-12-17 14:53:48,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-17 14:53:48,822 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:53:48,822 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:53:48,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 14:53:48,823 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:53:48,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:53:48,823 INFO L85 PathProgramCache]: Analyzing trace with hash 397519417, now seen corresponding path program 1 times [2021-12-17 14:53:48,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:53:48,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139883926] [2021-12-17 14:53:48,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:53:48,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:53:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:48,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:53:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:48,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:53:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:48,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:53:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:48,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:53:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:48,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:53:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:48,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:53:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:48,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-17 14:53:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:48,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-17 14:53:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:48,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-17 14:53:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:48,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-17 14:53:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:48,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-17 14:53:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:48,887 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 14:53:48,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:53:48,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139883926] [2021-12-17 14:53:48,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139883926] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:53:48,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:53:48,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:53:48,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613381818] [2021-12-17 14:53:48,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:53:48,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:53:48,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:53:48,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:53:48,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:53:48,889 INFO L87 Difference]: Start difference. First operand 5540 states and 9393 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:53:49,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:53:49,947 INFO L93 Difference]: Finished difference Result 13779 states and 23821 transitions. [2021-12-17 14:53:49,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:53:49,948 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 114 [2021-12-17 14:53:49,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:53:49,995 INFO L225 Difference]: With dead ends: 13779 [2021-12-17 14:53:49,995 INFO L226 Difference]: Without dead ends: 9378 [2021-12-17 14:53:50,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:53:50,008 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 1000 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 14:53:50,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1015 Valid, 1317 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 14:53:50,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9378 states. [2021-12-17 14:53:50,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9378 to 9223. [2021-12-17 14:53:50,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9223 states, 7639 states have (on average 1.6112056551904699) internal successors, (12308), 7646 states have internal predecessors, (12308), 1563 states have call successors, (1563), 16 states have call predecessors, (1563), 20 states have return successors, (1758), 1562 states have call predecessors, (1758), 1562 states have call successors, (1758) [2021-12-17 14:53:50,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9223 states to 9223 states and 15629 transitions. [2021-12-17 14:53:50,409 INFO L78 Accepts]: Start accepts. Automaton has 9223 states and 15629 transitions. Word has length 114 [2021-12-17 14:53:50,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:53:50,409 INFO L470 AbstractCegarLoop]: Abstraction has 9223 states and 15629 transitions. [2021-12-17 14:53:50,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:53:50,410 INFO L276 IsEmpty]: Start isEmpty. Operand 9223 states and 15629 transitions. [2021-12-17 14:53:50,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 14:53:50,422 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:53:50,422 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:53:50,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 14:53:50,423 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:53:50,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:53:50,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1530809481, now seen corresponding path program 1 times [2021-12-17 14:53:50,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:53:50,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809599032] [2021-12-17 14:53:50,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:53:50,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:53:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:50,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:53:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:50,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:53:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:50,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:53:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:50,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:53:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:50,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:53:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:50,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:53:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:50,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-17 14:53:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:50,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 14:53:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:50,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 14:53:50,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:50,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-17 14:53:50,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:50,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-17 14:53:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:50,494 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 14:53:50,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:53:50,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809599032] [2021-12-17 14:53:50,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809599032] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:53:50,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:53:50,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:53:50,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959956931] [2021-12-17 14:53:50,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:53:50,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:53:50,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:53:50,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:53:50,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:53:50,497 INFO L87 Difference]: Start difference. First operand 9223 states and 15629 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:53:51,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:53:51,806 INFO L93 Difference]: Finished difference Result 23963 states and 41367 transitions. [2021-12-17 14:53:51,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:53:51,807 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 115 [2021-12-17 14:53:51,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:53:51,859 INFO L225 Difference]: With dead ends: 23963 [2021-12-17 14:53:51,859 INFO L226 Difference]: Without dead ends: 16331 [2021-12-17 14:53:51,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:53:51,881 INFO L933 BasicCegarLoop]: 598 mSDtfsCounter, 998 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 14:53:51,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1013 Valid, 1370 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 14:53:51,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16331 states. [2021-12-17 14:53:52,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16331 to 16176. [2021-12-17 14:53:52,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16176 states, 13389 states have (on average 1.6020613936813803) internal successors, (21450), 13396 states have internal predecessors, (21450), 2766 states have call successors, (2766), 16 states have call predecessors, (2766), 20 states have return successors, (3105), 2765 states have call predecessors, (3105), 2765 states have call successors, (3105) [2021-12-17 14:53:52,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16176 states to 16176 states and 27321 transitions. [2021-12-17 14:53:52,478 INFO L78 Accepts]: Start accepts. Automaton has 16176 states and 27321 transitions. Word has length 115 [2021-12-17 14:53:52,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:53:52,478 INFO L470 AbstractCegarLoop]: Abstraction has 16176 states and 27321 transitions. [2021-12-17 14:53:52,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:53:52,479 INFO L276 IsEmpty]: Start isEmpty. Operand 16176 states and 27321 transitions. [2021-12-17 14:53:52,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-17 14:53:52,494 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:53:52,494 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:53:52,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 14:53:52,495 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:53:52,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:53:52,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1035195930, now seen corresponding path program 1 times [2021-12-17 14:53:52,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:53:52,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257673853] [2021-12-17 14:53:52,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:53:52,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:53:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:52,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:53:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:52,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:53:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:52,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:53:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:52,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:53:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:52,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:53:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:52,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:53:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:52,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-17 14:53:52,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:52,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-17 14:53:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:52,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-17 14:53:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:52,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-17 14:53:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:52,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-17 14:53:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:52,560 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 14:53:52,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:53:52,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257673853] [2021-12-17 14:53:52,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257673853] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:53:52,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:53:52,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:53:52,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743091403] [2021-12-17 14:53:52,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:53:52,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:53:52,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:53:52,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:53:52,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:53:52,563 INFO L87 Difference]: Start difference. First operand 16176 states and 27321 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:53:54,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:53:54,219 INFO L93 Difference]: Finished difference Result 42929 states and 73966 transitions. [2021-12-17 14:53:54,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:53:54,220 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 116 [2021-12-17 14:53:54,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:53:54,316 INFO L225 Difference]: With dead ends: 42929 [2021-12-17 14:53:54,316 INFO L226 Difference]: Without dead ends: 28986 [2021-12-17 14:53:54,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:53:54,355 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 996 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 14:53:54,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1011 Valid, 1312 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 14:53:54,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28986 states. [2021-12-17 14:53:55,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28986 to 28831. [2021-12-17 14:53:55,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28831 states, 24005 states have (on average 1.597750468652364) internal successors, (38354), 24012 states have internal predecessors, (38354), 4805 states have call successors, (4805), 16 states have call predecessors, (4805), 20 states have return successors, (5418), 4804 states have call predecessors, (5418), 4804 states have call successors, (5418) [2021-12-17 14:53:55,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28831 states to 28831 states and 48577 transitions. [2021-12-17 14:53:55,493 INFO L78 Accepts]: Start accepts. Automaton has 28831 states and 48577 transitions. Word has length 116 [2021-12-17 14:53:55,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:53:55,493 INFO L470 AbstractCegarLoop]: Abstraction has 28831 states and 48577 transitions. [2021-12-17 14:53:55,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:53:55,494 INFO L276 IsEmpty]: Start isEmpty. Operand 28831 states and 48577 transitions. [2021-12-17 14:53:55,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-17 14:53:55,510 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:53:55,510 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:53:55,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 14:53:55,510 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:53:55,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:53:55,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1615427271, now seen corresponding path program 1 times [2021-12-17 14:53:55,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:53:55,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510877027] [2021-12-17 14:53:55,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:53:55,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:53:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:55,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:53:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:55,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:53:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:55,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:53:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:55,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:53:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:55,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:53:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:55,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:53:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:55,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-17 14:53:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:55,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-17 14:53:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:55,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-17 14:53:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:55,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-17 14:53:55,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:55,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 14:53:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:53:55,570 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 14:53:55,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:53:55,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510877027] [2021-12-17 14:53:55,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510877027] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:53:55,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:53:55,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:53:55,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965819155] [2021-12-17 14:53:55,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:53:55,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:53:55,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:53:55,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:53:55,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:53:55,572 INFO L87 Difference]: Start difference. First operand 28831 states and 48577 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:53:58,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:53:58,205 INFO L93 Difference]: Finished difference Result 78691 states and 134725 transitions. [2021-12-17 14:53:58,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:53:58,208 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 117 [2021-12-17 14:53:58,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:53:58,376 INFO L225 Difference]: With dead ends: 78691 [2021-12-17 14:53:58,376 INFO L226 Difference]: Without dead ends: 52865 [2021-12-17 14:53:58,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:53:58,433 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 994 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 14:53:58,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1009 Valid, 1317 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 14:53:58,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52865 states. [2021-12-17 14:54:00,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52865 to 52710. [2021-12-17 14:54:00,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52710 states, 44169 states have (on average 1.5921347551450111) internal successors, (70323), 44176 states have internal predecessors, (70323), 8520 states have call successors, (8520), 16 states have call predecessors, (8520), 20 states have return successors, (9665), 8519 states have call predecessors, (9665), 8519 states have call successors, (9665) [2021-12-17 14:54:00,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52710 states to 52710 states and 88508 transitions. [2021-12-17 14:54:00,467 INFO L78 Accepts]: Start accepts. Automaton has 52710 states and 88508 transitions. Word has length 117 [2021-12-17 14:54:00,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:54:00,468 INFO L470 AbstractCegarLoop]: Abstraction has 52710 states and 88508 transitions. [2021-12-17 14:54:00,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:54:00,468 INFO L276 IsEmpty]: Start isEmpty. Operand 52710 states and 88508 transitions. [2021-12-17 14:54:00,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-17 14:54:00,485 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:54:00,485 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:54:00,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 14:54:00,486 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:54:00,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:54:00,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1383712678, now seen corresponding path program 1 times [2021-12-17 14:54:00,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:54:00,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054088976] [2021-12-17 14:54:00,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:54:00,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:54:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:00,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:54:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:00,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:54:00,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:00,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:54:00,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:00,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:54:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:00,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:54:00,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:00,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:54:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:00,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 14:54:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:00,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-17 14:54:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:00,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-17 14:54:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:00,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-17 14:54:00,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:00,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-17 14:54:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:00,559 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 14:54:00,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:54:00,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054088976] [2021-12-17 14:54:00,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054088976] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:54:00,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:54:00,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:54:00,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45895126] [2021-12-17 14:54:00,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:54:00,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:54:00,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:54:00,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:54:00,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:54:00,561 INFO L87 Difference]: Start difference. First operand 52710 states and 88508 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:54:04,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:54:04,021 INFO L93 Difference]: Finished difference Result 98462 states and 168912 transitions. [2021-12-17 14:54:04,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:54:04,022 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 118 [2021-12-17 14:54:04,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:54:04,464 INFO L225 Difference]: With dead ends: 98462 [2021-12-17 14:54:04,464 INFO L226 Difference]: Without dead ends: 98324 [2021-12-17 14:54:04,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:54:04,495 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 992 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 14:54:04,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1007 Valid, 1318 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 14:54:04,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98324 states. [2021-12-17 14:54:07,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98324 to 98169. [2021-12-17 14:54:08,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98169 states, 82829 states have (on average 1.5851090801530865) internal successors, (131293), 82836 states have internal predecessors, (131293), 15319 states have call successors, (15319), 16 states have call predecessors, (15319), 20 states have return successors, (17510), 15318 states have call predecessors, (17510), 15318 states have call successors, (17510) [2021-12-17 14:54:08,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98169 states to 98169 states and 164122 transitions. [2021-12-17 14:54:08,555 INFO L78 Accepts]: Start accepts. Automaton has 98169 states and 164122 transitions. Word has length 118 [2021-12-17 14:54:08,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:54:08,555 INFO L470 AbstractCegarLoop]: Abstraction has 98169 states and 164122 transitions. [2021-12-17 14:54:08,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:54:08,556 INFO L276 IsEmpty]: Start isEmpty. Operand 98169 states and 164122 transitions. [2021-12-17 14:54:08,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-17 14:54:08,575 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:54:08,576 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:54:08,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 14:54:08,576 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:54:08,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:54:08,577 INFO L85 PathProgramCache]: Analyzing trace with hash -548289320, now seen corresponding path program 1 times [2021-12-17 14:54:08,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:54:08,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145025267] [2021-12-17 14:54:08,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:54:08,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:54:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:08,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:54:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:08,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:54:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:08,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:54:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:08,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:54:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:08,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:54:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:08,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:54:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:08,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-17 14:54:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:08,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-17 14:54:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:08,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-17 14:54:08,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:08,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 14:54:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:08,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-17 14:54:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:08,775 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 14:54:08,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:54:08,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145025267] [2021-12-17 14:54:08,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145025267] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:54:08,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:54:08,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-17 14:54:08,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413594393] [2021-12-17 14:54:08,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:54:08,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-17 14:54:08,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:54:08,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-17 14:54:08,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-12-17 14:54:08,777 INFO L87 Difference]: Start difference. First operand 98169 states and 164122 transitions. Second operand has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2021-12-17 14:54:18,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:54:18,941 INFO L93 Difference]: Finished difference Result 196318 states and 340085 transitions. [2021-12-17 14:54:18,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-17 14:54:18,942 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 119 [2021-12-17 14:54:18,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:54:19,941 INFO L225 Difference]: With dead ends: 196318 [2021-12-17 14:54:19,942 INFO L226 Difference]: Without dead ends: 196186 [2021-12-17 14:54:20,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1073 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=691, Invalid=2849, Unknown=0, NotChecked=0, Total=3540 [2021-12-17 14:54:20,030 INFO L933 BasicCegarLoop]: 844 mSDtfsCounter, 3826 mSDsluCounter, 2414 mSDsCounter, 0 mSdLazyCounter, 7751 mSolverCounterSat, 1822 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3838 SdHoareTripleChecker+Valid, 3258 SdHoareTripleChecker+Invalid, 9573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1822 IncrementalHoareTripleChecker+Valid, 7751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-17 14:54:20,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3838 Valid, 3258 Invalid, 9573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1822 Valid, 7751 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-17 14:54:20,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196186 states. [2021-12-17 14:54:27,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196186 to 195589. [2021-12-17 14:54:28,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195589 states, 165093 states have (on average 1.585863725294228) internal successors, (261815), 164999 states have internal predecessors, (261815), 30445 states have call successors, (30445), 41 states have call predecessors, (30445), 50 states have return successors, (38105), 30556 states have call predecessors, (38105), 30442 states have call successors, (38105) [2021-12-17 14:54:28,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195589 states to 195589 states and 330365 transitions. [2021-12-17 14:54:28,998 INFO L78 Accepts]: Start accepts. Automaton has 195589 states and 330365 transitions. Word has length 119 [2021-12-17 14:54:28,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:54:28,998 INFO L470 AbstractCegarLoop]: Abstraction has 195589 states and 330365 transitions. [2021-12-17 14:54:28,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2021-12-17 14:54:28,998 INFO L276 IsEmpty]: Start isEmpty. Operand 195589 states and 330365 transitions. [2021-12-17 14:54:29,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-17 14:54:29,035 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:54:29,035 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:54:29,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-17 14:54:29,035 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:54:29,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:54:29,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1574323709, now seen corresponding path program 1 times [2021-12-17 14:54:29,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:54:29,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090623267] [2021-12-17 14:54:29,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:54:29,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:54:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:29,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:54:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:29,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:54:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:29,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:54:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:29,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:54:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:29,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:54:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:29,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:54:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:29,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-17 14:54:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:29,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-17 14:54:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:29,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-17 14:54:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:29,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 14:54:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:29,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-17 14:54:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:54:29,135 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 14:54:29,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:54:29,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090623267] [2021-12-17 14:54:29,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090623267] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:54:29,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:54:29,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 14:54:29,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320630564] [2021-12-17 14:54:29,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:54:29,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 14:54:29,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:54:29,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 14:54:29,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-17 14:54:29,138 INFO L87 Difference]: Start difference. First operand 195589 states and 330365 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 6 states have internal predecessors, (83), 4 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11)