./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec4_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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_spec4_product31.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 87743dcc2c25562bb963887f71637e8ebeccc1d21e21cc059ac68c446a3d9b4f --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 14:38:03,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 14:38:03,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 14:38:03,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 14:38:03,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 14:38:03,922 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 14:38:03,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 14:38:03,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 14:38:03,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 14:38:03,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 14:38:03,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 14:38:03,927 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 14:38:03,928 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 14:38:03,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 14:38:03,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 14:38:03,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 14:38:03,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 14:38:03,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 14:38:03,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 14:38:03,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 14:38:03,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 14:38:03,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 14:38:03,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 14:38:03,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 14:38:03,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 14:38:03,939 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 14:38:03,939 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 14:38:03,940 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 14:38:03,940 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 14:38:03,941 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 14:38:03,941 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 14:38:03,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 14:38:03,942 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 14:38:03,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 14:38:03,943 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 14:38:03,944 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 14:38:03,944 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 14:38:03,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 14:38:03,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 14:38:03,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 14:38:03,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 14:38:03,946 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 14:38:03,960 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 14:38:03,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 14:38:03,961 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 14:38:03,961 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 14:38:03,961 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 14:38:03,962 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 14:38:03,962 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 14:38:03,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 14:38:03,962 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 14:38:03,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 14:38:03,963 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 14:38:03,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 14:38:03,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 14:38:03,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 14:38:03,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 14:38:03,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 14:38:03,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 14:38:03,964 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 14:38:03,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 14:38:03,964 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 14:38:03,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 14:38:03,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 14:38:03,964 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 14:38:03,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 14:38:03,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 14:38:03,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 14:38:03,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 14:38:03,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 14:38:03,965 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 14:38:03,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 14:38:03,966 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 14:38:03,966 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 14:38:03,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 14:38:03,966 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 14:38:03,966 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87743dcc2c25562bb963887f71637e8ebeccc1d21e21cc059ac68c446a3d9b4f [2021-12-14 14:38:04,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 14:38:04,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 14:38:04,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 14:38:04,171 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 14:38:04,172 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 14:38:04,173 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec4_product31.cil.c [2021-12-14 14:38:04,213 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bb6888fe/577aec9939e14b0db2b8995c693ee16c/FLAGacdb573f4 [2021-12-14 14:38:04,689 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 14:38:04,690 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec4_product31.cil.c [2021-12-14 14:38:04,711 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bb6888fe/577aec9939e14b0db2b8995c693ee16c/FLAGacdb573f4 [2021-12-14 14:38:04,726 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bb6888fe/577aec9939e14b0db2b8995c693ee16c [2021-12-14 14:38:04,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 14:38:04,730 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 14:38:04,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 14:38:04,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 14:38:04,734 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 14:38:04,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:38:04" (1/1) ... [2021-12-14 14:38:04,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c9725d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:04, skipping insertion in model container [2021-12-14 14:38:04,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:38:04" (1/1) ... [2021-12-14 14:38:04,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 14:38:04,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 14:38:05,053 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_spec4_product31.cil.c[26985,26998] [2021-12-14 14:38:05,219 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 14:38:05,228 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 14:38:05,275 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_spec4_product31.cil.c[26985,26998] [2021-12-14 14:38:05,311 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 14:38:05,337 INFO L208 MainTranslator]: Completed translation [2021-12-14 14:38:05,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:05 WrapperNode [2021-12-14 14:38:05,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 14:38:05,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 14:38:05,338 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 14:38:05,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 14:38:05,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:05" (1/1) ... [2021-12-14 14:38:05,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:05" (1/1) ... [2021-12-14 14:38:05,437 INFO L137 Inliner]: procedures = 131, calls = 218, calls flagged for inlining = 61, calls inlined = 56, statements flattened = 1018 [2021-12-14 14:38:05,438 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 14:38:05,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 14:38:05,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 14:38:05,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 14:38:05,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:05" (1/1) ... [2021-12-14 14:38:05,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:05" (1/1) ... [2021-12-14 14:38:05,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:05" (1/1) ... [2021-12-14 14:38:05,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:05" (1/1) ... [2021-12-14 14:38:05,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:05" (1/1) ... [2021-12-14 14:38:05,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:05" (1/1) ... [2021-12-14 14:38:05,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:05" (1/1) ... [2021-12-14 14:38:05,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 14:38:05,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 14:38:05,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 14:38:05,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 14:38:05,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:05" (1/1) ... [2021-12-14 14:38:05,540 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 14:38:05,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:38:05,570 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) [2021-12-14 14:38:05,587 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 [2021-12-14 14:38:05,604 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-12-14 14:38:05,604 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-12-14 14:38:05,605 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-14 14:38:05,605 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-14 14:38:05,605 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-14 14:38:05,605 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-14 14:38:05,606 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-14 14:38:05,606 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-14 14:38:05,606 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-14 14:38:05,609 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-14 14:38:05,609 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-14 14:38:05,609 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-14 14:38:05,609 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-14 14:38:05,609 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-14 14:38:05,610 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-14 14:38:05,610 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-14 14:38:05,610 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-14 14:38:05,610 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-14 14:38:05,610 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-14 14:38:05,610 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-14 14:38:05,611 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-14 14:38:05,611 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-14 14:38:05,611 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-14 14:38:05,611 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-14 14:38:05,611 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-14 14:38:05,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 14:38:05,611 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-14 14:38:05,611 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-14 14:38:05,612 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-12-14 14:38:05,612 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-12-14 14:38:05,612 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-14 14:38:05,612 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-14 14:38:05,612 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-14 14:38:05,613 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-14 14:38:05,613 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-14 14:38:05,613 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-14 14:38:05,613 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-14 14:38:05,613 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-14 14:38:05,613 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-14 14:38:05,614 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-14 14:38:05,614 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-14 14:38:05,614 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-14 14:38:05,614 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-14 14:38:05,614 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-14 14:38:05,614 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-14 14:38:05,614 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-14 14:38:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 14:38:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-14 14:38:05,615 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-14 14:38:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 14:38:05,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 14:38:05,807 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 14:38:05,808 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 14:38:06,405 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 14:38:06,417 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 14:38:06,417 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 14:38:06,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:38:06 BoogieIcfgContainer [2021-12-14 14:38:06,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 14:38:06,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 14:38:06,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 14:38:06,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 14:38:06,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:38:04" (1/3) ... [2021-12-14 14:38:06,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2149167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:38:06, skipping insertion in model container [2021-12-14 14:38:06,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:05" (2/3) ... [2021-12-14 14:38:06,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2149167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:38:06, skipping insertion in model container [2021-12-14 14:38:06,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:38:06" (3/3) ... [2021-12-14 14:38:06,429 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec4_product31.cil.c [2021-12-14 14:38:06,433 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 14:38:06,433 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 14:38:06,474 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 14:38:06,480 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 [2021-12-14 14:38:06,480 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 14:38:06,512 INFO L276 IsEmpty]: Start isEmpty. Operand has 369 states, 285 states have (on average 1.5017543859649123) internal successors, (428), 289 states have internal predecessors, (428), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2021-12-14 14:38:06,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-14 14:38:06,527 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:38:06,528 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:38:06,528 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:38:06,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:38:06,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1712392195, now seen corresponding path program 1 times [2021-12-14 14:38:06,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:38:06,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088531425] [2021-12-14 14:38:06,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:38:06,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:38:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:06,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:38:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:06,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:38:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:06,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:38:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:06,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 14:38:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:06,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 14:38:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:06,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 14:38:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:06,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 14:38:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:06,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-14 14:38:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:06,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-14 14:38:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:06,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 14:38:06,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:06,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 14:38:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:06,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-14 14:38:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:06,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-14 14:38:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:07,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 14:38:07,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:07,010 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-14 14:38:07,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:38:07,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088531425] [2021-12-14 14:38:07,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088531425] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:38:07,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704085411] [2021-12-14 14:38:07,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:38:07,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:38:07,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:38:07,041 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) [2021-12-14 14:38:07,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 14:38:07,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:07,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-14 14:38:07,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:38:07,503 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-14 14:38:07,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:38:07,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704085411] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:38:07,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:38:07,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-14 14:38:07,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464706443] [2021-12-14 14:38:07,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:38:07,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 14:38:07,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:38:07,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 14:38:07,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 14:38:07,541 INFO L87 Difference]: Start difference. First operand has 369 states, 285 states have (on average 1.5017543859649123) internal successors, (428), 289 states have internal predecessors, (428), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) Second operand has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:38:07,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:38:07,583 INFO L93 Difference]: Finished difference Result 584 states and 846 transitions. [2021-12-14 14:38:07,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 14:38:07,585 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 107 [2021-12-14 14:38:07,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:38:07,595 INFO L225 Difference]: With dead ends: 584 [2021-12-14 14:38:07,596 INFO L226 Difference]: Without dead ends: 362 [2021-12-14 14:38:07,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 14:38:07,603 INFO L933 BasicCegarLoop]: 542 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, 542 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 [2021-12-14 14:38:07,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:38:07,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-12-14 14:38:07,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2021-12-14 14:38:07,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 279 states have (on average 1.4946236559139785) internal successors, (417), 282 states have internal predecessors, (417), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2021-12-14 14:38:07,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 534 transitions. [2021-12-14 14:38:07,670 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 534 transitions. Word has length 107 [2021-12-14 14:38:07,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:38:07,671 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 534 transitions. [2021-12-14 14:38:07,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:38:07,672 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 534 transitions. [2021-12-14 14:38:07,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-14 14:38:07,680 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:38:07,680 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:38:07,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 14:38:07,898 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 [2021-12-14 14:38:07,899 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:38:07,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:38:07,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1773212290, now seen corresponding path program 1 times [2021-12-14 14:38:07,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:38:07,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279562204] [2021-12-14 14:38:07,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:38:07,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:38:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:07,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:38:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:07,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:38:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:07,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:38:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:07,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 14:38:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:07,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 14:38:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:07,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 14:38:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:07,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 14:38:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:08,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 14:38:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:08,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 14:38:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:08,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 14:38:08,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:08,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-14 14:38:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:08,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 14:38:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:08,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-14 14:38:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:08,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 14:38:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:08,021 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-14 14:38:08,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:38:08,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279562204] [2021-12-14 14:38:08,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279562204] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:38:08,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958511080] [2021-12-14 14:38:08,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:38:08,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:38:08,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:38:08,024 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) [2021-12-14 14:38:08,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 14:38:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:08,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 14:38:08,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:38:08,381 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-14 14:38:08,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:38:08,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958511080] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:38:08,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:38:08,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-14 14:38:08,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12362462] [2021-12-14 14:38:08,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:38:08,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 14:38:08,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:38:08,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 14:38:08,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:38:08,384 INFO L87 Difference]: Start difference. First operand 362 states and 534 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:38:08,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:38:08,409 INFO L93 Difference]: Finished difference Result 574 states and 827 transitions. [2021-12-14 14:38:08,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 14:38:08,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 108 [2021-12-14 14:38:08,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:38:08,412 INFO L225 Difference]: With dead ends: 574 [2021-12-14 14:38:08,412 INFO L226 Difference]: Without dead ends: 365 [2021-12-14 14:38:08,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:38:08,415 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 1 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1062 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 [2021-12-14 14:38:08,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1062 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:38:08,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-12-14 14:38:08,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 364. [2021-12-14 14:38:08,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 281 states have (on average 1.491103202846975) internal successors, (419), 284 states have internal predecessors, (419), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2021-12-14 14:38:08,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 536 transitions. [2021-12-14 14:38:08,431 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 536 transitions. Word has length 108 [2021-12-14 14:38:08,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:38:08,432 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 536 transitions. [2021-12-14 14:38:08,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:38:08,432 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 536 transitions. [2021-12-14 14:38:08,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-14 14:38:08,434 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:38:08,453 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:38:08,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 14:38:08,670 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 [2021-12-14 14:38:08,671 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:38:08,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:38:08,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1520631755, now seen corresponding path program 1 times [2021-12-14 14:38:08,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:38:08,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328662758] [2021-12-14 14:38:08,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:38:08,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:38:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:08,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:38:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:08,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:38:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:08,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:38:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:08,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 14:38:08,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:08,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 14:38:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:08,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 14:38:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:08,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 14:38:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:08,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-14 14:38:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:08,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 14:38:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:08,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-14 14:38:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:08,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 14:38:08,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:08,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-14 14:38:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:08,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 14:38:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:08,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 14:38:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:08,807 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-14 14:38:08,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:38:08,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328662758] [2021-12-14 14:38:08,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328662758] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:38:08,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130448083] [2021-12-14 14:38:08,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:38:08,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:38:08,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:38:08,809 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) [2021-12-14 14:38:08,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 14:38:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:09,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 14:38:09,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:38:09,147 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-14 14:38:09,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:38:09,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130448083] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:38:09,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:38:09,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-14 14:38:09,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196030737] [2021-12-14 14:38:09,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:38:09,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 14:38:09,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:38:09,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 14:38:09,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:38:09,150 INFO L87 Difference]: Start difference. First operand 364 states and 536 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:38:09,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:38:09,171 INFO L93 Difference]: Finished difference Result 758 states and 1131 transitions. [2021-12-14 14:38:09,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 14:38:09,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 114 [2021-12-14 14:38:09,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:38:09,175 INFO L225 Difference]: With dead ends: 758 [2021-12-14 14:38:09,175 INFO L226 Difference]: Without dead ends: 421 [2021-12-14 14:38:09,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:38:09,177 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 107 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1042 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 [2021-12-14 14:38:09,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 1042 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:38:09,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-12-14 14:38:09,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 413. [2021-12-14 14:38:09,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 319 states have (on average 1.5078369905956113) internal successors, (481), 322 states have internal predecessors, (481), 70 states have call successors, (70), 23 states have call predecessors, (70), 23 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2021-12-14 14:38:09,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 620 transitions. [2021-12-14 14:38:09,194 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 620 transitions. Word has length 114 [2021-12-14 14:38:09,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:38:09,195 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 620 transitions. [2021-12-14 14:38:09,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:38:09,195 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 620 transitions. [2021-12-14 14:38:09,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-14 14:38:09,197 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:38:09,198 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:38:09,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-14 14:38:09,411 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 [2021-12-14 14:38:09,412 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:38:09,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:38:09,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1393137846, now seen corresponding path program 1 times [2021-12-14 14:38:09,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:38:09,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587419250] [2021-12-14 14:38:09,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:38:09,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:38:09,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:09,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:38:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:09,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:38:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:09,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:38:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:09,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 14:38:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:09,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 14:38:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:09,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 14:38:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:09,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-14 14:38:09,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:09,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 14:38:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:09,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 14:38:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:09,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 14:38:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:09,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 14:38:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:09,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 14:38:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:09,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 14:38:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:09,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 14:38:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:09,571 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-14 14:38:09,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:38:09,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587419250] [2021-12-14 14:38:09,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587419250] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:38:09,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902858334] [2021-12-14 14:38:09,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:38:09,572 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:38:09,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:38:09,585 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) [2021-12-14 14:38:09,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 14:38:09,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:09,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 14:38:09,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:38:09,944 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-14 14:38:09,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:38:09,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902858334] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:38:09,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:38:09,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-14 14:38:09,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915537288] [2021-12-14 14:38:09,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:38:09,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 14:38:09,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:38:09,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 14:38:09,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-14 14:38:09,946 INFO L87 Difference]: Start difference. First operand 413 states and 620 transitions. Second operand has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-14 14:38:09,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:38:09,989 INFO L93 Difference]: Finished difference Result 817 states and 1230 transitions. [2021-12-14 14:38:09,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 14:38:09,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 115 [2021-12-14 14:38:09,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:38:09,992 INFO L225 Difference]: With dead ends: 817 [2021-12-14 14:38:09,992 INFO L226 Difference]: Without dead ends: 415 [2021-12-14 14:38:09,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:38:09,994 INFO L933 BasicCegarLoop]: 525 mSDtfsCounter, 125 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1956 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 [2021-12-14 14:38:09,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 1956 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:38:09,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-12-14 14:38:10,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2021-12-14 14:38:10,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 320 states have (on average 1.50625) internal successors, (482), 324 states have internal predecessors, (482), 70 states have call successors, (70), 23 states have call predecessors, (70), 24 states have return successors, (71), 69 states have call predecessors, (71), 69 states have call successors, (71) [2021-12-14 14:38:10,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 623 transitions. [2021-12-14 14:38:10,017 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 623 transitions. Word has length 115 [2021-12-14 14:38:10,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:38:10,017 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 623 transitions. [2021-12-14 14:38:10,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-14 14:38:10,017 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 623 transitions. [2021-12-14 14:38:10,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-14 14:38:10,019 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:38:10,019 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:38:10,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-14 14:38:10,237 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 [2021-12-14 14:38:10,237 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:38:10,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:38:10,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1218570185, now seen corresponding path program 1 times [2021-12-14 14:38:10,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:38:10,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550655354] [2021-12-14 14:38:10,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:38:10,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:38:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:10,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:38:10,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:10,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:38:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:10,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:38:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:10,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:38:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:10,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-14 14:38:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:10,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-14 14:38:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:10,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 14:38:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:10,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-14 14:38:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:10,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 14:38:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:10,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 14:38:10,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:10,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 14:38:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:10,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 14:38:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:10,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-14 14:38:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:10,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-14 14:38:10,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:10,352 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-14 14:38:10,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:38:10,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550655354] [2021-12-14 14:38:10,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550655354] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:38:10,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986195907] [2021-12-14 14:38:10,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:38:10,353 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:38:10,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:38:10,366 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) [2021-12-14 14:38:10,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-14 14:38:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:10,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 14:38:10,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:38:10,763 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-14 14:38:10,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:38:10,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986195907] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:38:10,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:38:10,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-14 14:38:10,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429854773] [2021-12-14 14:38:10,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:38:10,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 14:38:10,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:38:10,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 14:38:10,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-14 14:38:10,766 INFO L87 Difference]: Start difference. First operand 415 states and 623 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-14 14:38:10,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:38:10,812 INFO L93 Difference]: Finished difference Result 819 states and 1235 transitions. [2021-12-14 14:38:10,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 14:38:10,813 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2021-12-14 14:38:10,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:38:10,815 INFO L225 Difference]: With dead ends: 819 [2021-12-14 14:38:10,815 INFO L226 Difference]: Without dead ends: 417 [2021-12-14 14:38:10,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-14 14:38:10,817 INFO L933 BasicCegarLoop]: 523 mSDtfsCounter, 124 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1945 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 [2021-12-14 14:38:10,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1945 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:38:10,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-12-14 14:38:10,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2021-12-14 14:38:10,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 321 states have (on average 1.5046728971962617) internal successors, (483), 326 states have internal predecessors, (483), 70 states have call successors, (70), 23 states have call predecessors, (70), 25 states have return successors, (76), 69 states have call predecessors, (76), 69 states have call successors, (76) [2021-12-14 14:38:10,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 629 transitions. [2021-12-14 14:38:10,829 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 629 transitions. Word has length 116 [2021-12-14 14:38:10,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:38:10,830 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 629 transitions. [2021-12-14 14:38:10,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-14 14:38:10,830 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 629 transitions. [2021-12-14 14:38:10,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-14 14:38:10,831 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:38:10,831 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:38:10,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-14 14:38:11,049 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 [2021-12-14 14:38:11,050 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:38:11,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:38:11,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1926411301, now seen corresponding path program 1 times [2021-12-14 14:38:11,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:38:11,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062669206] [2021-12-14 14:38:11,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:38:11,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:38:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:11,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:38:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:11,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:38:11,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:11,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:38:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:11,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:38:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:11,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:38:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:11,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 14:38:11,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:11,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-14 14:38:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:11,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 14:38:11,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:11,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 14:38:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:11,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-14 14:38:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:11,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 14:38:11,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:11,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 14:38:11,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:11,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 14:38:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:11,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 14:38:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:11,143 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-14 14:38:11,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:38:11,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062669206] [2021-12-14 14:38:11,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062669206] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:38:11,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:38:11,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 14:38:11,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069401533] [2021-12-14 14:38:11,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:38:11,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 14:38:11,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:38:11,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 14:38:11,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 14:38:11,145 INFO L87 Difference]: Start difference. First operand 417 states and 629 transitions. Second operand has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-14 14:38:12,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:38:12,669 INFO L93 Difference]: Finished difference Result 996 states and 1501 transitions. [2021-12-14 14:38:12,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 14:38:12,670 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 117 [2021-12-14 14:38:12,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:38:12,673 INFO L225 Difference]: With dead ends: 996 [2021-12-14 14:38:12,673 INFO L226 Difference]: Without dead ends: 602 [2021-12-14 14:38:12,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 14:38:12,675 INFO L933 BasicCegarLoop]: 673 mSDtfsCounter, 1293 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 2084 mSolverCounterSat, 524 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1310 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 2608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 524 IncrementalHoareTripleChecker+Valid, 2084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 14:38:12,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1310 Valid, 1790 Invalid, 2608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [524 Valid, 2084 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 14:38:12,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-12-14 14:38:12,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 417. [2021-12-14 14:38:12,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 321 states have (on average 1.5046728971962617) internal successors, (483), 326 states have internal predecessors, (483), 70 states have call successors, (70), 23 states have call predecessors, (70), 25 states have return successors, (75), 69 states have call predecessors, (75), 69 states have call successors, (75) [2021-12-14 14:38:12,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 628 transitions. [2021-12-14 14:38:12,697 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 628 transitions. Word has length 117 [2021-12-14 14:38:12,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:38:12,697 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 628 transitions. [2021-12-14 14:38:12,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-14 14:38:12,697 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 628 transitions. [2021-12-14 14:38:12,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-14 14:38:12,699 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:38:12,699 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:38:12,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 14:38:12,700 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:38:12,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:38:12,700 INFO L85 PathProgramCache]: Analyzing trace with hash 562265254, now seen corresponding path program 2 times [2021-12-14 14:38:12,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:38:12,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395428309] [2021-12-14 14:38:12,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:38:12,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:38:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:12,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:38:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:12,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:38:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:12,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:38:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:12,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:38:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:12,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:38:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:12,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 14:38:12,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:12,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-14 14:38:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:12,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 14:38:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:12,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 14:38:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:12,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-14 14:38:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:12,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-14 14:38:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:12,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 14:38:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:12,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-14 14:38:12,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:12,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 14:38:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:12,806 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-14 14:38:12,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:38:12,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395428309] [2021-12-14 14:38:12,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395428309] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:38:12,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:38:12,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 14:38:12,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934516697] [2021-12-14 14:38:12,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:38:12,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 14:38:12,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:38:12,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 14:38:12,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 14:38:12,808 INFO L87 Difference]: Start difference. First operand 417 states and 628 transitions. Second operand has 9 states, 8 states have (on average 9.25) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-14 14:38:14,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:38:14,247 INFO L93 Difference]: Finished difference Result 998 states and 1504 transitions. [2021-12-14 14:38:14,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 14:38:14,248 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.25) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 118 [2021-12-14 14:38:14,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:38:14,250 INFO L225 Difference]: With dead ends: 998 [2021-12-14 14:38:14,250 INFO L226 Difference]: Without dead ends: 604 [2021-12-14 14:38:14,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 14:38:14,252 INFO L933 BasicCegarLoop]: 674 mSDtfsCounter, 1288 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 2099 mSolverCounterSat, 522 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 2621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 522 IncrementalHoareTripleChecker+Valid, 2099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 14:38:14,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1305 Valid, 1791 Invalid, 2621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [522 Valid, 2099 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 14:38:14,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-12-14 14:38:14,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 419. [2021-12-14 14:38:14,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 322 states have (on average 1.5031055900621118) internal successors, (484), 328 states have internal predecessors, (484), 70 states have call successors, (70), 23 states have call predecessors, (70), 26 states have return successors, (77), 69 states have call predecessors, (77), 69 states have call successors, (77) [2021-12-14 14:38:14,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 631 transitions. [2021-12-14 14:38:14,271 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 631 transitions. Word has length 118 [2021-12-14 14:38:14,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:38:14,271 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 631 transitions. [2021-12-14 14:38:14,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.25) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-14 14:38:14,271 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 631 transitions. [2021-12-14 14:38:14,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-14 14:38:14,273 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:38:14,273 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:38:14,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 14:38:14,273 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:38:14,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:38:14,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1566483968, now seen corresponding path program 1 times [2021-12-14 14:38:14,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:38:14,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930685484] [2021-12-14 14:38:14,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:38:14,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:38:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:14,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:38:14,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:14,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:38:14,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:14,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:38:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:14,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:38:14,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:14,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:38:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:14,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:38:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:14,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-14 14:38:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:14,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-14 14:38:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:14,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 14:38:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:14,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 14:38:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:14,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 14:38:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:14,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 14:38:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:14,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-14 14:38:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:14,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 14:38:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:14,396 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-14 14:38:14,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:38:14,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930685484] [2021-12-14 14:38:14,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930685484] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:38:14,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:38:14,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-14 14:38:14,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351072815] [2021-12-14 14:38:14,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:38:14,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 14:38:14,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:38:14,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 14:38:14,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-14 14:38:14,397 INFO L87 Difference]: Start difference. First operand 419 states and 631 transitions. Second operand has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-14 14:38:16,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:38:16,075 INFO L93 Difference]: Finished difference Result 996 states and 1499 transitions. [2021-12-14 14:38:16,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 14:38:16,075 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 119 [2021-12-14 14:38:16,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:38:16,078 INFO L225 Difference]: With dead ends: 996 [2021-12-14 14:38:16,078 INFO L226 Difference]: Without dead ends: 604 [2021-12-14 14:38:16,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-14 14:38:16,081 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 1400 mSDsluCounter, 1680 mSDsCounter, 0 mSdLazyCounter, 3760 mSolverCounterSat, 577 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1400 SdHoareTripleChecker+Valid, 2340 SdHoareTripleChecker+Invalid, 4337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 577 IncrementalHoareTripleChecker+Valid, 3760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-14 14:38:16,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1400 Valid, 2340 Invalid, 4337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [577 Valid, 3760 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-14 14:38:16,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-12-14 14:38:16,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 419. [2021-12-14 14:38:16,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 322 states have (on average 1.5031055900621118) internal successors, (484), 328 states have internal predecessors, (484), 70 states have call successors, (70), 23 states have call predecessors, (70), 26 states have return successors, (76), 69 states have call predecessors, (76), 69 states have call successors, (76) [2021-12-14 14:38:16,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 630 transitions. [2021-12-14 14:38:16,101 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 630 transitions. Word has length 119 [2021-12-14 14:38:16,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:38:16,101 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 630 transitions. [2021-12-14 14:38:16,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-14 14:38:16,101 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 630 transitions. [2021-12-14 14:38:16,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-14 14:38:16,103 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:38:16,103 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:38:16,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 14:38:16,104 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:38:16,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:38:16,104 INFO L85 PathProgramCache]: Analyzing trace with hash 556945230, now seen corresponding path program 2 times [2021-12-14 14:38:16,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:38:16,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562187351] [2021-12-14 14:38:16,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:38:16,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:38:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:16,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:38:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:16,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:38:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:16,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:38:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:16,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:38:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:16,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:38:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:16,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:38:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:16,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 14:38:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:16,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 14:38:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:16,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 14:38:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:16,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 14:38:16,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:16,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 14:38:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:16,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 14:38:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:16,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 14:38:16,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:16,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-14 14:38:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:16,215 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-14 14:38:16,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:38:16,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562187351] [2021-12-14 14:38:16,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562187351] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:38:16,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:38:16,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-14 14:38:16,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471771162] [2021-12-14 14:38:16,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:38:16,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 14:38:16,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:38:16,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 14:38:16,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-14 14:38:16,217 INFO L87 Difference]: Start difference. First operand 419 states and 630 transitions. Second operand has 12 states, 11 states have (on average 7.181818181818182) internal successors, (79), 8 states have internal predecessors, (79), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-14 14:38:18,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:38:18,148 INFO L93 Difference]: Finished difference Result 998 states and 1505 transitions. [2021-12-14 14:38:18,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 14:38:18,148 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.181818181818182) internal successors, (79), 8 states have internal predecessors, (79), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 120 [2021-12-14 14:38:18,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:38:18,152 INFO L225 Difference]: With dead ends: 998 [2021-12-14 14:38:18,152 INFO L226 Difference]: Without dead ends: 606 [2021-12-14 14:38:18,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-14 14:38:18,155 INFO L933 BasicCegarLoop]: 661 mSDtfsCounter, 1395 mSDsluCounter, 1680 mSDsCounter, 0 mSdLazyCounter, 3785 mSolverCounterSat, 574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1395 SdHoareTripleChecker+Valid, 2341 SdHoareTripleChecker+Invalid, 4359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 574 IncrementalHoareTripleChecker+Valid, 3785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-14 14:38:18,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1395 Valid, 2341 Invalid, 4359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [574 Valid, 3785 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-14 14:38:18,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-12-14 14:38:18,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 421. [2021-12-14 14:38:18,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 323 states have (on average 1.501547987616099) internal successors, (485), 330 states have internal predecessors, (485), 70 states have call successors, (70), 23 states have call predecessors, (70), 27 states have return successors, (81), 69 states have call predecessors, (81), 69 states have call successors, (81) [2021-12-14 14:38:18,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 636 transitions. [2021-12-14 14:38:18,176 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 636 transitions. Word has length 120 [2021-12-14 14:38:18,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:38:18,177 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 636 transitions. [2021-12-14 14:38:18,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.181818181818182) internal successors, (79), 8 states have internal predecessors, (79), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-14 14:38:18,177 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 636 transitions. [2021-12-14 14:38:18,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-14 14:38:18,178 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:38:18,179 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:38:18,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 14:38:18,179 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:38:18,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:38:18,179 INFO L85 PathProgramCache]: Analyzing trace with hash -606320571, now seen corresponding path program 1 times [2021-12-14 14:38:18,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:38:18,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749922701] [2021-12-14 14:38:18,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:38:18,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:38:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:18,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:38:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:18,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:38:18,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:18,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:38:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:18,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:38:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:18,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:38:18,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:18,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:38:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:18,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-14 14:38:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:18,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 14:38:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:18,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 14:38:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:18,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 14:38:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:18,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 14:38:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:18,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 14:38:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:18,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 14:38:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:18,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 14:38:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:18,265 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-14 14:38:18,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:38:18,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749922701] [2021-12-14 14:38:18,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749922701] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:38:18,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332196295] [2021-12-14 14:38:18,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:38:18,266 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:38:18,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:38:18,274 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) [2021-12-14 14:38:18,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-14 14:38:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:18,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 14:38:18,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:38:18,580 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-14 14:38:18,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 14:38:18,710 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-14 14:38:18,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332196295] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 14:38:18,710 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 14:38:18,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2021-12-14 14:38:18,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154253708] [2021-12-14 14:38:18,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 14:38:18,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 14:38:18,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:38:18,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 14:38:18,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-12-14 14:38:18,714 INFO L87 Difference]: Start difference. First operand 421 states and 636 transitions. Second operand has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 7 states have internal predecessors, (112), 2 states have call successors, (33), 6 states have call predecessors, (33), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-14 14:38:20,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:38:20,145 INFO L93 Difference]: Finished difference Result 1167 states and 1833 transitions. [2021-12-14 14:38:20,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 14:38:20,146 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 7 states have internal predecessors, (112), 2 states have call successors, (33), 6 states have call predecessors, (33), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 121 [2021-12-14 14:38:20,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:38:20,151 INFO L225 Difference]: With dead ends: 1167 [2021-12-14 14:38:20,152 INFO L226 Difference]: Without dead ends: 958 [2021-12-14 14:38:20,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-12-14 14:38:20,154 INFO L933 BasicCegarLoop]: 766 mSDtfsCounter, 1562 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 1889 mSolverCounterSat, 674 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 2274 SdHoareTripleChecker+Invalid, 2563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 674 IncrementalHoareTripleChecker+Valid, 1889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 14:38:20,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1607 Valid, 2274 Invalid, 2563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [674 Valid, 1889 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 14:38:20,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2021-12-14 14:38:20,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 749. [2021-12-14 14:38:20,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 587 states have (on average 1.5724020442930153) internal successors, (923), 594 states have internal predecessors, (923), 134 states have call successors, (134), 23 states have call predecessors, (134), 27 states have return successors, (155), 133 states have call predecessors, (155), 133 states have call successors, (155) [2021-12-14 14:38:20,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1212 transitions. [2021-12-14 14:38:20,190 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1212 transitions. Word has length 121 [2021-12-14 14:38:20,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:38:20,191 INFO L470 AbstractCegarLoop]: Abstraction has 749 states and 1212 transitions. [2021-12-14 14:38:20,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 7 states have internal predecessors, (112), 2 states have call successors, (33), 6 states have call predecessors, (33), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-14 14:38:20,191 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1212 transitions. [2021-12-14 14:38:20,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-14 14:38:20,193 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:38:20,194 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:38:20,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-14 14:38:20,412 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 [2021-12-14 14:38:20,412 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:38:20,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:38:20,413 INFO L85 PathProgramCache]: Analyzing trace with hash -80189790, now seen corresponding path program 1 times [2021-12-14 14:38:20,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:38:20,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865133437] [2021-12-14 14:38:20,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:38:20,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:38:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:20,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:38:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:20,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:38:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:20,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:38:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:20,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:38:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:20,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:38:20,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:20,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:38:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:20,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 14:38:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:20,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 14:38:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:20,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 14:38:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:20,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 14:38:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:20,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 14:38:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:20,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 14:38:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:20,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-14 14:38:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:20,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-14 14:38:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:20,490 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-14 14:38:20,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:38:20,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865133437] [2021-12-14 14:38:20,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865133437] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:38:20,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:38:20,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:38:20,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576832132] [2021-12-14 14:38:20,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:38:20,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:38:20,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:38:20,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:38:20,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:38:20,493 INFO L87 Difference]: Start difference. First operand 749 states and 1212 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:38:21,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:38:21,733 INFO L93 Difference]: Finished difference Result 1948 states and 3204 transitions. [2021-12-14 14:38:21,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:38:21,734 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 127 [2021-12-14 14:38:21,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:38:21,739 INFO L225 Difference]: With dead ends: 1948 [2021-12-14 14:38:21,740 INFO L226 Difference]: Without dead ends: 1267 [2021-12-14 14:38:21,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:38:21,742 INFO L933 BasicCegarLoop]: 713 mSDtfsCounter, 1284 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 573 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 573 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-14 14:38:21,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1299 Valid, 1507 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [573 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-14 14:38:21,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2021-12-14 14:38:21,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1074. [2021-12-14 14:38:21,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 848 states have (on average 1.5896226415094339) internal successors, (1348), 855 states have internal predecessors, (1348), 198 states have call successors, (198), 23 states have call predecessors, (198), 27 states have return successors, (229), 197 states have call predecessors, (229), 197 states have call successors, (229) [2021-12-14 14:38:21,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1775 transitions. [2021-12-14 14:38:21,780 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1775 transitions. Word has length 127 [2021-12-14 14:38:21,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:38:21,781 INFO L470 AbstractCegarLoop]: Abstraction has 1074 states and 1775 transitions. [2021-12-14 14:38:21,781 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:38:21,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1775 transitions. [2021-12-14 14:38:21,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-14 14:38:21,784 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:38:21,785 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:38:21,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 14:38:21,785 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:38:21,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:38:21,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1842424016, now seen corresponding path program 1 times [2021-12-14 14:38:21,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:38:21,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022665187] [2021-12-14 14:38:21,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:38:21,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:38:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:21,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:38:21,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:21,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:38:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:21,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:38:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:21,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:38:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:21,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:38:21,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:21,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:38:21,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:21,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 14:38:21,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:21,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 14:38:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:21,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 14:38:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:21,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-14 14:38:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:21,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 14:38:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:21,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 14:38:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:21,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 14:38:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:21,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 14:38:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:21,877 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-14 14:38:21,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:38:21,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022665187] [2021-12-14 14:38:21,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022665187] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:38:21,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:38:21,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:38:21,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585990745] [2021-12-14 14:38:21,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:38:21,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:38:21,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:38:21,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:38:21,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:38:21,879 INFO L87 Difference]: Start difference. First operand 1074 states and 1775 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:38:23,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:38:23,019 INFO L93 Difference]: Finished difference Result 2728 states and 4553 transitions. [2021-12-14 14:38:23,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:38:23,019 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 128 [2021-12-14 14:38:23,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:38:23,028 INFO L225 Difference]: With dead ends: 2728 [2021-12-14 14:38:23,028 INFO L226 Difference]: Without dead ends: 1775 [2021-12-14 14:38:23,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:38:23,033 INFO L933 BasicCegarLoop]: 701 mSDtfsCounter, 1282 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 573 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1297 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 1651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 573 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 14:38:23,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1297 Valid, 1458 Invalid, 1651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [573 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 14:38:23,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775 states. [2021-12-14 14:38:23,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775 to 1582. [2021-12-14 14:38:23,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1261 states have (on average 1.6011102299762094) internal successors, (2019), 1268 states have internal predecessors, (2019), 293 states have call successors, (293), 23 states have call predecessors, (293), 27 states have return successors, (324), 292 states have call predecessors, (324), 292 states have call successors, (324) [2021-12-14 14:38:23,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2636 transitions. [2021-12-14 14:38:23,117 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2636 transitions. Word has length 128 [2021-12-14 14:38:23,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:38:23,118 INFO L470 AbstractCegarLoop]: Abstraction has 1582 states and 2636 transitions. [2021-12-14 14:38:23,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:38:23,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2636 transitions. [2021-12-14 14:38:23,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-14 14:38:23,123 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:38:23,124 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:38:23,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 14:38:23,124 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:38:23,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:38:23,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1744735292, now seen corresponding path program 1 times [2021-12-14 14:38:23,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:38:23,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117936434] [2021-12-14 14:38:23,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:38:23,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:38:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:23,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:38:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:23,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:38:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:23,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:38:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:23,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:38:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:23,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:38:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:23,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:38:23,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:23,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 14:38:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:23,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 14:38:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:23,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 14:38:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:23,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-14 14:38:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:23,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 14:38:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:23,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-14 14:38:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:23,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-14 14:38:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:23,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-14 14:38:23,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:23,193 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-14 14:38:23,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:38:23,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117936434] [2021-12-14 14:38:23,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117936434] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:38:23,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:38:23,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:38:23,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723145673] [2021-12-14 14:38:23,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:38:23,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:38:23,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:38:23,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:38:23,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:38:23,195 INFO L87 Difference]: Start difference. First operand 1582 states and 2636 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:38:24,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:38:24,338 INFO L93 Difference]: Finished difference Result 3880 states and 6562 transitions. [2021-12-14 14:38:24,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:38:24,338 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 129 [2021-12-14 14:38:24,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:38:24,349 INFO L225 Difference]: With dead ends: 3880 [2021-12-14 14:38:24,349 INFO L226 Difference]: Without dead ends: 2544 [2021-12-14 14:38:24,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:38:24,356 INFO L933 BasicCegarLoop]: 702 mSDtfsCounter, 1280 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 562 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 562 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-14 14:38:24,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1295 Valid, 1462 Invalid, 1644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [562 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-14 14:38:24,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2544 states. [2021-12-14 14:38:24,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2544 to 2351. [2021-12-14 14:38:24,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2351 states, 1907 states have (on average 1.609858416360776) internal successors, (3070), 1914 states have internal predecessors, (3070), 416 states have call successors, (416), 23 states have call predecessors, (416), 27 states have return successors, (463), 415 states have call predecessors, (463), 415 states have call successors, (463) [2021-12-14 14:38:24,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2351 states to 2351 states and 3949 transitions. [2021-12-14 14:38:24,440 INFO L78 Accepts]: Start accepts. Automaton has 2351 states and 3949 transitions. Word has length 129 [2021-12-14 14:38:24,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:38:24,440 INFO L470 AbstractCegarLoop]: Abstraction has 2351 states and 3949 transitions. [2021-12-14 14:38:24,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:38:24,441 INFO L276 IsEmpty]: Start isEmpty. Operand 2351 states and 3949 transitions. [2021-12-14 14:38:24,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-14 14:38:24,449 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:38:24,449 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:38:24,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 14:38:24,450 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:38:24,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:38:24,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1064489199, now seen corresponding path program 1 times [2021-12-14 14:38:24,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:38:24,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632287743] [2021-12-14 14:38:24,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:38:24,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:38:24,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:24,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:38:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:24,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:38:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:24,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:38:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:24,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:38:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:24,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:38:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:24,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:38:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:24,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 14:38:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:24,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 14:38:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:24,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 14:38:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:24,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-14 14:38:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:24,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 14:38:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:24,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 14:38:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:24,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-14 14:38:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:24,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-14 14:38:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:24,527 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-14 14:38:24,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:38:24,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632287743] [2021-12-14 14:38:24,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632287743] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:38:24,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:38:24,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:38:24,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129727190] [2021-12-14 14:38:24,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:38:24,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:38:24,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:38:24,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:38:24,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:38:24,529 INFO L87 Difference]: Start difference. First operand 2351 states and 3949 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:38:25,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:38:25,630 INFO L93 Difference]: Finished difference Result 5674 states and 9696 transitions. [2021-12-14 14:38:25,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:38:25,631 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 130 [2021-12-14 14:38:25,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:38:25,648 INFO L225 Difference]: With dead ends: 5674 [2021-12-14 14:38:25,648 INFO L226 Difference]: Without dead ends: 3773 [2021-12-14 14:38:25,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:38:25,655 INFO L933 BasicCegarLoop]: 702 mSDtfsCounter, 1278 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 570 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 570 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-14 14:38:25,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1293 Valid, 1462 Invalid, 1644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [570 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-14 14:38:25,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3773 states. [2021-12-14 14:38:25,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3773 to 3580. [2021-12-14 14:38:25,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3580 states, 2957 states have (on average 1.6154886709502874) internal successors, (4777), 2964 states have internal predecessors, (4777), 595 states have call successors, (595), 23 states have call predecessors, (595), 27 states have return successors, (668), 594 states have call predecessors, (668), 594 states have call successors, (668) [2021-12-14 14:38:25,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3580 states to 3580 states and 6040 transitions. [2021-12-14 14:38:25,803 INFO L78 Accepts]: Start accepts. Automaton has 3580 states and 6040 transitions. Word has length 130 [2021-12-14 14:38:25,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:38:25,804 INFO L470 AbstractCegarLoop]: Abstraction has 3580 states and 6040 transitions. [2021-12-14 14:38:25,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:38:25,804 INFO L276 IsEmpty]: Start isEmpty. Operand 3580 states and 6040 transitions. [2021-12-14 14:38:25,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-14 14:38:25,812 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:38:25,813 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:38:25,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-14 14:38:25,813 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:38:25,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:38:25,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1428129408, now seen corresponding path program 1 times [2021-12-14 14:38:25,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:38:25,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330048516] [2021-12-14 14:38:25,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:38:25,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:38:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:25,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:38:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:25,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:38:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:25,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:38:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:25,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:38:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:25,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:38:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:25,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:38:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:25,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 14:38:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:25,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-14 14:38:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:25,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 14:38:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:25,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-14 14:38:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:25,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 14:38:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:25,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 14:38:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:25,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 14:38:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:25,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 14:38:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:25,881 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-14 14:38:25,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:38:25,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330048516] [2021-12-14 14:38:25,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330048516] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:38:25,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:38:25,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:38:25,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700171303] [2021-12-14 14:38:25,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:38:25,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:38:25,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:38:25,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:38:25,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:38:25,883 INFO L87 Difference]: Start difference. First operand 3580 states and 6040 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:38:27,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:38:27,129 INFO L93 Difference]: Finished difference Result 8622 states and 14843 transitions. [2021-12-14 14:38:27,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:38:27,129 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 131 [2021-12-14 14:38:27,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:38:27,155 INFO L225 Difference]: With dead ends: 8622 [2021-12-14 14:38:27,155 INFO L226 Difference]: Without dead ends: 5804 [2021-12-14 14:38:27,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:38:27,166 INFO L933 BasicCegarLoop]: 711 mSDtfsCounter, 1276 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1291 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 1661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 572 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 14:38:27,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1291 Valid, 1486 Invalid, 1661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [572 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 14:38:27,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5804 states. [2021-12-14 14:38:27,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5804 to 5611. [2021-12-14 14:38:27,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5611 states, 4612 states have (on average 1.6107979184735473) internal successors, (7429), 4619 states have internal predecessors, (7429), 971 states have call successors, (971), 23 states have call predecessors, (971), 27 states have return successors, (1088), 970 states have call predecessors, (1088), 970 states have call successors, (1088) [2021-12-14 14:38:27,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5611 states to 5611 states and 9488 transitions. [2021-12-14 14:38:27,436 INFO L78 Accepts]: Start accepts. Automaton has 5611 states and 9488 transitions. Word has length 131 [2021-12-14 14:38:27,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:38:27,436 INFO L470 AbstractCegarLoop]: Abstraction has 5611 states and 9488 transitions. [2021-12-14 14:38:27,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:38:27,437 INFO L276 IsEmpty]: Start isEmpty. Operand 5611 states and 9488 transitions. [2021-12-14 14:38:27,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-14 14:38:27,453 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:38:27,453 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:38:27,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-14 14:38:27,453 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:38:27,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:38:27,453 INFO L85 PathProgramCache]: Analyzing trace with hash 2036981845, now seen corresponding path program 1 times [2021-12-14 14:38:27,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:38:27,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476345473] [2021-12-14 14:38:27,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:38:27,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:38:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:27,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:38:27,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:27,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:38:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:27,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:38:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:27,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:38:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:27,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:38:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:27,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:38:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:27,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 14:38:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:27,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 14:38:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:27,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-14 14:38:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:27,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 14:38:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:27,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 14:38:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:27,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 14:38:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:27,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-14 14:38:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:27,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 14:38:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:27,544 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-14 14:38:27,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:38:27,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476345473] [2021-12-14 14:38:27,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476345473] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:38:27,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:38:27,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:38:27,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642956375] [2021-12-14 14:38:27,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:38:27,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:38:27,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:38:27,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:38:27,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:38:27,546 INFO L87 Difference]: Start difference. First operand 5611 states and 9488 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:38:28,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:38:28,885 INFO L93 Difference]: Finished difference Result 13959 states and 24064 transitions. [2021-12-14 14:38:28,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:38:28,886 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 132 [2021-12-14 14:38:28,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:38:28,937 INFO L225 Difference]: With dead ends: 13959 [2021-12-14 14:38:28,937 INFO L226 Difference]: Without dead ends: 9487 [2021-12-14 14:38:28,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:38:28,955 INFO L933 BasicCegarLoop]: 702 mSDtfsCounter, 1274 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 576 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1289 SdHoareTripleChecker+Valid, 1461 SdHoareTripleChecker+Invalid, 1655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 576 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 14:38:28,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1289 Valid, 1461 Invalid, 1655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [576 Valid, 1079 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 14:38:28,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9487 states. [2021-12-14 14:38:29,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9487 to 9294. [2021-12-14 14:38:29,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9294 states, 7689 states have (on average 1.609442060085837) internal successors, (12375), 7696 states have internal predecessors, (12375), 1577 states have call successors, (1577), 23 states have call predecessors, (1577), 27 states have return successors, (1772), 1576 states have call predecessors, (1772), 1576 states have call successors, (1772) [2021-12-14 14:38:29,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9294 states to 9294 states and 15724 transitions. [2021-12-14 14:38:29,345 INFO L78 Accepts]: Start accepts. Automaton has 9294 states and 15724 transitions. Word has length 132 [2021-12-14 14:38:29,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:38:29,345 INFO L470 AbstractCegarLoop]: Abstraction has 9294 states and 15724 transitions. [2021-12-14 14:38:29,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:38:29,345 INFO L276 IsEmpty]: Start isEmpty. Operand 9294 states and 15724 transitions. [2021-12-14 14:38:29,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-14 14:38:29,364 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:38:29,364 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:38:29,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-14 14:38:29,364 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:38:29,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:38:29,365 INFO L85 PathProgramCache]: Analyzing trace with hash -622442002, now seen corresponding path program 1 times [2021-12-14 14:38:29,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:38:29,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226106328] [2021-12-14 14:38:29,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:38:29,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:38:29,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:29,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:38:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:29,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:38:29,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:29,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:38:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:29,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:38:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:29,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:38:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:29,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:38:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:29,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 14:38:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:29,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 14:38:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:29,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 14:38:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:29,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 14:38:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:29,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-14 14:38:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:29,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-14 14:38:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:29,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-14 14:38:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:29,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-14 14:38:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:29,445 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-14 14:38:29,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:38:29,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226106328] [2021-12-14 14:38:29,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226106328] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:38:29,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:38:29,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:38:29,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487331915] [2021-12-14 14:38:29,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:38:29,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:38:29,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:38:29,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:38:29,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:38:29,448 INFO L87 Difference]: Start difference. First operand 9294 states and 15724 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:38:30,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:38:30,904 INFO L93 Difference]: Finished difference Result 24143 states and 41610 transitions. [2021-12-14 14:38:30,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:38:30,905 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 133 [2021-12-14 14:38:30,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:38:30,954 INFO L225 Difference]: With dead ends: 24143 [2021-12-14 14:38:30,954 INFO L226 Difference]: Without dead ends: 16440 [2021-12-14 14:38:30,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:38:30,978 INFO L933 BasicCegarLoop]: 713 mSDtfsCounter, 1272 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 562 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1287 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 1656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 562 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-14 14:38:30,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1287 Valid, 1501 Invalid, 1656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [562 Valid, 1094 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-14 14:38:30,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16440 states. [2021-12-14 14:38:31,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16440 to 16247. [2021-12-14 14:38:31,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16247 states, 13439 states have (on average 1.6010863903564254) internal successors, (21517), 13446 states have internal predecessors, (21517), 2780 states have call successors, (2780), 23 states have call predecessors, (2780), 27 states have return successors, (3119), 2779 states have call predecessors, (3119), 2779 states have call successors, (3119) [2021-12-14 14:38:31,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16247 states to 16247 states and 27416 transitions. [2021-12-14 14:38:31,607 INFO L78 Accepts]: Start accepts. Automaton has 16247 states and 27416 transitions. Word has length 133 [2021-12-14 14:38:31,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:38:31,608 INFO L470 AbstractCegarLoop]: Abstraction has 16247 states and 27416 transitions. [2021-12-14 14:38:31,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:38:31,608 INFO L276 IsEmpty]: Start isEmpty. Operand 16247 states and 27416 transitions. [2021-12-14 14:38:31,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 14:38:31,639 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:38:31,640 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:38:31,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-14 14:38:31,640 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:38:31,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:38:31,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1154109098, now seen corresponding path program 1 times [2021-12-14 14:38:31,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:38:31,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737987795] [2021-12-14 14:38:31,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:38:31,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:38:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:31,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:38:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:31,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:38:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:31,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:38:31,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:31,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:38:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:31,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:38:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:31,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:38:31,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:31,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 14:38:31,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:31,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-14 14:38:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:31,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 14:38:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:31,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 14:38:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:31,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 14:38:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:31,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 14:38:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:31,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-14 14:38:31,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:31,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 14:38:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:31,715 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-14 14:38:31,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:38:31,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737987795] [2021-12-14 14:38:31,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737987795] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:38:31,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:38:31,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:38:31,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442073724] [2021-12-14 14:38:31,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:38:31,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:38:31,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:38:31,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:38:31,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:38:31,719 INFO L87 Difference]: Start difference. First operand 16247 states and 27416 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:38:33,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:38:33,645 INFO L93 Difference]: Finished difference Result 43109 states and 74209 transitions. [2021-12-14 14:38:33,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:38:33,645 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 134 [2021-12-14 14:38:33,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:38:33,805 INFO L225 Difference]: With dead ends: 43109 [2021-12-14 14:38:33,805 INFO L226 Difference]: Without dead ends: 29095 [2021-12-14 14:38:33,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:38:33,842 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 1270 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 573 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1285 SdHoareTripleChecker+Valid, 1467 SdHoareTripleChecker+Invalid, 1660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 573 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 14:38:33,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1285 Valid, 1467 Invalid, 1660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [573 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 14:38:33,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29095 states. [2021-12-14 14:38:34,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29095 to 28902. [2021-12-14 14:38:35,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28902 states, 24055 states have (on average 1.5972147162752026) internal successors, (38421), 24062 states have internal predecessors, (38421), 4819 states have call successors, (4819), 23 states have call predecessors, (4819), 27 states have return successors, (5432), 4818 states have call predecessors, (5432), 4818 states have call successors, (5432) [2021-12-14 14:38:35,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28902 states to 28902 states and 48672 transitions. [2021-12-14 14:38:35,107 INFO L78 Accepts]: Start accepts. Automaton has 28902 states and 48672 transitions. Word has length 134 [2021-12-14 14:38:35,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:38:35,108 INFO L470 AbstractCegarLoop]: Abstraction has 28902 states and 48672 transitions. [2021-12-14 14:38:35,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:38:35,108 INFO L276 IsEmpty]: Start isEmpty. Operand 28902 states and 48672 transitions. [2021-12-14 14:38:35,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-14 14:38:35,145 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:38:35,145 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:38:35,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-14 14:38:35,145 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:38:35,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:38:35,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1946229808, now seen corresponding path program 1 times [2021-12-14 14:38:35,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:38:35,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080729485] [2021-12-14 14:38:35,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:38:35,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:38:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:35,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:38:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:35,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:38:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:35,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:38:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:35,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:38:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:35,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:38:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:35,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:38:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:35,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 14:38:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:35,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-14 14:38:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:35,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 14:38:35,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:35,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 14:38:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:35,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-14 14:38:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:35,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-14 14:38:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:35,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 14:38:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:35,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 14:38:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:35,223 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-14 14:38:35,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:38:35,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080729485] [2021-12-14 14:38:35,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080729485] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:38:35,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:38:35,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:38:35,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403819661] [2021-12-14 14:38:35,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:38:35,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:38:35,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:38:35,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:38:35,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:38:35,225 INFO L87 Difference]: Start difference. First operand 28902 states and 48672 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:38:37,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:38:37,736 INFO L93 Difference]: Finished difference Result 78871 states and 134968 transitions. [2021-12-14 14:38:37,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:38:37,736 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 135 [2021-12-14 14:38:37,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:38:37,936 INFO L225 Difference]: With dead ends: 78871 [2021-12-14 14:38:37,936 INFO L226 Difference]: Without dead ends: 52974 [2021-12-14 14:38:38,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:38:38,003 INFO L933 BasicCegarLoop]: 703 mSDtfsCounter, 1268 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 575 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1283 SdHoareTripleChecker+Valid, 1466 SdHoareTripleChecker+Invalid, 1653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 575 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-14 14:38:38,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1283 Valid, 1466 Invalid, 1653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [575 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-14 14:38:38,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52974 states. [2021-12-14 14:38:40,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52974 to 52781. [2021-12-14 14:38:40,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52781 states, 44219 states have (on average 1.591849657387096) internal successors, (70390), 44226 states have internal predecessors, (70390), 8534 states have call successors, (8534), 23 states have call predecessors, (8534), 27 states have return successors, (9679), 8533 states have call predecessors, (9679), 8533 states have call successors, (9679) [2021-12-14 14:38:40,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52781 states to 52781 states and 88603 transitions. [2021-12-14 14:38:40,451 INFO L78 Accepts]: Start accepts. Automaton has 52781 states and 88603 transitions. Word has length 135 [2021-12-14 14:38:40,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:38:40,452 INFO L470 AbstractCegarLoop]: Abstraction has 52781 states and 88603 transitions. [2021-12-14 14:38:40,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:38:40,452 INFO L276 IsEmpty]: Start isEmpty. Operand 52781 states and 88603 transitions. [2021-12-14 14:38:40,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-14 14:38:40,489 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:38:40,489 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:38:40,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-14 14:38:40,490 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:38:40,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:38:40,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1744381686, now seen corresponding path program 1 times [2021-12-14 14:38:40,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:38:40,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122501675] [2021-12-14 14:38:40,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:38:40,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:38:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:40,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:38:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:40,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:38:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:40,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:38:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:40,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:38:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:40,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:38:40,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:40,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:38:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:40,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-14 14:38:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:40,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 14:38:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:40,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-14 14:38:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:40,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 14:38:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:40,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-14 14:38:40,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:40,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-14 14:38:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:40,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-14 14:38:40,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:40,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-14 14:38:40,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:40,558 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-14 14:38:40,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:38:40,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122501675] [2021-12-14 14:38:40,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122501675] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:38:40,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:38:40,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:38:40,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328553869] [2021-12-14 14:38:40,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:38:40,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:38:40,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:38:40,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:38:40,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:38:40,560 INFO L87 Difference]: Start difference. First operand 52781 states and 88603 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:38:44,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:38:44,412 INFO L93 Difference]: Finished difference Result 98642 states and 169155 transitions. [2021-12-14 14:38:44,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:38:44,413 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 136 [2021-12-14 14:38:44,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:38:44,786 INFO L225 Difference]: With dead ends: 98642 [2021-12-14 14:38:44,786 INFO L226 Difference]: Without dead ends: 98433 [2021-12-14 14:38:44,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:38:44,842 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 1266 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 575 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 1467 SdHoareTripleChecker+Invalid, 1659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 575 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 14:38:44,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1281 Valid, 1467 Invalid, 1659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [575 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 14:38:45,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98433 states. [2021-12-14 14:38:48,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98433 to 98240. [2021-12-14 14:38:48,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98240 states, 82879 states have (on average 1.5849612085087899) internal successors, (131360), 82886 states have internal predecessors, (131360), 15333 states have call successors, (15333), 23 states have call predecessors, (15333), 27 states have return successors, (17524), 15332 states have call predecessors, (17524), 15332 states have call successors, (17524) [2021-12-14 14:38:49,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98240 states to 98240 states and 164217 transitions. [2021-12-14 14:38:49,231 INFO L78 Accepts]: Start accepts. Automaton has 98240 states and 164217 transitions. Word has length 136 [2021-12-14 14:38:49,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:38:49,231 INFO L470 AbstractCegarLoop]: Abstraction has 98240 states and 164217 transitions. [2021-12-14 14:38:49,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:38:49,232 INFO L276 IsEmpty]: Start isEmpty. Operand 98240 states and 164217 transitions. [2021-12-14 14:38:49,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-14 14:38:49,276 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:38:49,276 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:38:49,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-14 14:38:49,276 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:38:49,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:38:49,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1080778319, now seen corresponding path program 1 times [2021-12-14 14:38:49,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:38:49,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364730295] [2021-12-14 14:38:49,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:38:49,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:38:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:49,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:38:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:49,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:38:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:49,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:38:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:49,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:38:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:49,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:38:49,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:49,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:38:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:49,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 14:38:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:49,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 14:38:49,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:49,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-14 14:38:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:49,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 14:38:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:49,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 14:38:49,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:49,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 14:38:49,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:49,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-14 14:38:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:49,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-14 14:38:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:38:49,449 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-14 14:38:49,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:38:49,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364730295] [2021-12-14 14:38:49,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364730295] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:38:49,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:38:49,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-14 14:38:49,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758515402] [2021-12-14 14:38:49,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:38:49,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-14 14:38:49,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:38:49,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-14 14:38:49,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-12-14 14:38:49,451 INFO L87 Difference]: Start difference. First operand 98240 states and 164217 transitions. Second operand has 18 states, 16 states have (on average 5.6875) internal successors, (91), 12 states have internal predecessors, (91), 6 states have call successors, (16), 7 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2021-12-14 14:39:02,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:39:02,147 INFO L93 Difference]: Finished difference Result 196790 states and 340729 transitions. [2021-12-14 14:39:02,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-12-14 14:39:02,147 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.6875) internal successors, (91), 12 states have internal predecessors, (91), 6 states have call successors, (16), 7 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 137 [2021-12-14 14:39:02,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:39:03,170 INFO L225 Difference]: With dead ends: 196790 [2021-12-14 14:39:03,170 INFO L226 Difference]: Without dead ends: 196587 [2021-12-14 14:39:03,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1280 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=872, Invalid=3820, Unknown=0, NotChecked=0, Total=4692 [2021-12-14 14:39:03,517 INFO L933 BasicCegarLoop]: 798 mSDtfsCounter, 4996 mSDsluCounter, 3427 mSDsCounter, 0 mSdLazyCounter, 11518 mSolverCounterSat, 2995 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4996 SdHoareTripleChecker+Valid, 4225 SdHoareTripleChecker+Invalid, 14513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2995 IncrementalHoareTripleChecker+Valid, 11518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-12-14 14:39:03,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4996 Valid, 4225 Invalid, 14513 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2995 Valid, 11518 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2021-12-14 14:39:03,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196587 states.