./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec0_product16.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_spec0_product16.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5ce5fd5bda0c8594f52541a2ff1031f1544bc9165bf7645718c7801e066263fc --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 05:57:11,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 05:57:11,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 05:57:11,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 05:57:11,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 05:57:11,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 05:57:11,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 05:57:11,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 05:57:11,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 05:57:11,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 05:57:11,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 05:57:11,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 05:57:11,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 05:57:11,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 05:57:11,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 05:57:11,086 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 05:57:11,087 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 05:57:11,088 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 05:57:11,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 05:57:11,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 05:57:11,094 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 05:57:11,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 05:57:11,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 05:57:11,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 05:57:11,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 05:57:11,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 05:57:11,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 05:57:11,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 05:57:11,101 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 05:57:11,101 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 05:57:11,102 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 05:57:11,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 05:57:11,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 05:57:11,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 05:57:11,104 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 05:57:11,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 05:57:11,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 05:57:11,106 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 05:57:11,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 05:57:11,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 05:57:11,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 05:57:11,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 05:57:11,109 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 05:57:11,130 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 05:57:11,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 05:57:11,131 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 05:57:11,131 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 05:57:11,131 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 05:57:11,132 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 05:57:11,132 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 05:57:11,132 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 05:57:11,132 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 05:57:11,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 05:57:11,133 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 05:57:11,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 05:57:11,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 05:57:11,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 05:57:11,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 05:57:11,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 05:57:11,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 05:57:11,134 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 05:57:11,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 05:57:11,134 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 05:57:11,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 05:57:11,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 05:57:11,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 05:57:11,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 05:57:11,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 05:57:11,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 05:57:11,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 05:57:11,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 05:57:11,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 05:57:11,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 05:57:11,136 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 05:57:11,137 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 05:57:11,137 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 05:57:11,137 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ce5fd5bda0c8594f52541a2ff1031f1544bc9165bf7645718c7801e066263fc [2022-07-12 05:57:11,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 05:57:11,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 05:57:11,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 05:57:11,333 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 05:57:11,333 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 05:57:11,334 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec0_product16.cil.c [2022-07-12 05:57:11,389 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34e2208b9/ed95fe70fc814901b766fe3ed88a83b9/FLAG57a10b062 [2022-07-12 05:57:11,844 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 05:57:11,852 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec0_product16.cil.c [2022-07-12 05:57:11,875 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34e2208b9/ed95fe70fc814901b766fe3ed88a83b9/FLAG57a10b062 [2022-07-12 05:57:12,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34e2208b9/ed95fe70fc814901b766fe3ed88a83b9 [2022-07-12 05:57:12,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 05:57:12,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 05:57:12,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 05:57:12,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 05:57:12,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 05:57:12,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 05:57:12" (1/1) ... [2022-07-12 05:57:12,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@786bd529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:57:12, skipping insertion in model container [2022-07-12 05:57:12,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 05:57:12" (1/1) ... [2022-07-12 05:57:12,216 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 05:57:12,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 05:57:12,477 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_spec0_product16.cil.c[7449,7462] [2022-07-12 05:57:12,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 05:57:12,653 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 05:57:12,679 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_spec0_product16.cil.c[7449,7462] [2022-07-12 05:57:12,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 05:57:12,756 INFO L208 MainTranslator]: Completed translation [2022-07-12 05:57:12,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:57:12 WrapperNode [2022-07-12 05:57:12,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 05:57:12,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 05:57:12,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 05:57:12,758 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 05:57:12,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:57:12" (1/1) ... [2022-07-12 05:57:12,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:57:12" (1/1) ... [2022-07-12 05:57:12,830 INFO L137 Inliner]: procedures = 125, calls = 195, calls flagged for inlining = 55, calls inlined = 50, statements flattened = 971 [2022-07-12 05:57:12,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 05:57:12,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 05:57:12,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 05:57:12,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 05:57:12,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:57:12" (1/1) ... [2022-07-12 05:57:12,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:57:12" (1/1) ... [2022-07-12 05:57:12,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:57:12" (1/1) ... [2022-07-12 05:57:12,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:57:12" (1/1) ... [2022-07-12 05:57:12,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:57:12" (1/1) ... [2022-07-12 05:57:12,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:57:12" (1/1) ... [2022-07-12 05:57:12,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:57:12" (1/1) ... [2022-07-12 05:57:12,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 05:57:12,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 05:57:12,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 05:57:12,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 05:57:12,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:57:12" (1/1) ... [2022-07-12 05:57:12,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 05:57:12,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:57:12,951 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 05:57:12,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 05:57:12,991 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-07-12 05:57:12,991 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-07-12 05:57:12,991 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-07-12 05:57:12,991 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-07-12 05:57:12,992 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-07-12 05:57:12,992 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-07-12 05:57:12,992 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-07-12 05:57:12,992 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-07-12 05:57:12,993 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-07-12 05:57:12,993 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-07-12 05:57:12,993 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-07-12 05:57:12,993 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-07-12 05:57:12,993 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-07-12 05:57:12,993 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-07-12 05:57:12,993 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-07-12 05:57:12,993 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-07-12 05:57:12,994 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-07-12 05:57:12,994 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-07-12 05:57:12,994 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-07-12 05:57:12,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 05:57:12,994 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-07-12 05:57:12,994 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-07-12 05:57:12,994 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-07-12 05:57:12,994 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-07-12 05:57:12,994 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-07-12 05:57:12,995 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-07-12 05:57:12,995 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-07-12 05:57:12,995 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-07-12 05:57:12,995 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-07-12 05:57:12,995 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-07-12 05:57:12,995 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-07-12 05:57:12,995 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-07-12 05:57:12,995 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-07-12 05:57:12,996 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-07-12 05:57:12,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 05:57:12,996 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-07-12 05:57:12,996 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-07-12 05:57:12,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 05:57:12,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 05:57:13,221 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 05:57:13,225 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 05:57:13,764 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 05:57:13,773 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 05:57:13,773 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 05:57:13,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 05:57:13 BoogieIcfgContainer [2022-07-12 05:57:13,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 05:57:13,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 05:57:13,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 05:57:13,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 05:57:13,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 05:57:12" (1/3) ... [2022-07-12 05:57:13,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c9425b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 05:57:13, skipping insertion in model container [2022-07-12 05:57:13,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:57:12" (2/3) ... [2022-07-12 05:57:13,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c9425b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 05:57:13, skipping insertion in model container [2022-07-12 05:57:13,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 05:57:13" (3/3) ... [2022-07-12 05:57:13,783 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec0_product16.cil.c [2022-07-12 05:57:13,793 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 05:57:13,793 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 05:57:13,846 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 05:57:13,851 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@70ae0c3, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@15e0d376 [2022-07-12 05:57:13,851 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 05:57:13,856 INFO L276 IsEmpty]: Start isEmpty. Operand has 299 states, 235 states have (on average 1.5319148936170213) internal successors, (360), 239 states have internal predecessors, (360), 45 states have call successors, (45), 17 states have call predecessors, (45), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-07-12 05:57:13,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-12 05:57:13,868 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:57:13,869 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-12 05:57:13,869 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:57:13,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:57:13,873 INFO L85 PathProgramCache]: Analyzing trace with hash -702970754, now seen corresponding path program 1 times [2022-07-12 05:57:13,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:57:13,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465461422] [2022-07-12 05:57:13,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:57:13,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:57:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:14,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 05:57:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:14,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:57:14,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:14,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 05:57:14,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:14,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 05:57:14,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:14,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 05:57:14,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:14,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 05:57:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:14,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 05:57:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:14,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 05:57:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:14,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 05:57:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:14,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 05:57:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:14,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 05:57:14,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:14,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 05:57:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:14,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 05:57:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:14,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:57:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:14,351 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 05:57:14,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:57:14,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465461422] [2022-07-12 05:57:14,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465461422] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:57:14,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020792398] [2022-07-12 05:57:14,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:57:14,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:57:14,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:57:14,357 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:57:14,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 05:57:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:14,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 1070 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 05:57:14,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:57:14,631 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-12 05:57:14,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:57:14,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020792398] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:57:14,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:57:14,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-07-12 05:57:14,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989092886] [2022-07-12 05:57:14,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:57:14,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 05:57:14,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:57:14,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 05:57:14,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:57:14,664 INFO L87 Difference]: Start difference. First operand has 299 states, 235 states have (on average 1.5319148936170213) internal successors, (360), 239 states have internal predecessors, (360), 45 states have call successors, (45), 17 states have call predecessors, (45), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 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) [2022-07-12 05:57:14,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:57:14,718 INFO L93 Difference]: Finished difference Result 444 states and 654 transitions. [2022-07-12 05:57:14,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 05:57:14,720 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 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 115 [2022-07-12 05:57:14,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:57:14,732 INFO L225 Difference]: With dead ends: 444 [2022-07-12 05:57:14,732 INFO L226 Difference]: Without dead ends: 292 [2022-07-12 05:57:14,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:57:14,741 INFO L413 NwaCegarLoop]: 446 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, 446 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:57:14,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:57:14,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-07-12 05:57:14,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2022-07-12 05:57:14,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 229 states have (on average 1.5240174672489082) internal successors, (349), 232 states have internal predecessors, (349), 45 states have call successors, (45), 17 states have call predecessors, (45), 17 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-07-12 05:57:14,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 438 transitions. [2022-07-12 05:57:14,799 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 438 transitions. Word has length 115 [2022-07-12 05:57:14,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:57:14,805 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 438 transitions. [2022-07-12 05:57:14,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 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) [2022-07-12 05:57:14,805 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 438 transitions. [2022-07-12 05:57:14,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-12 05:57:14,809 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:57:14,811 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-12 05:57:14,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 05:57:15,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-12 05:57:15,014 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:57:15,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:57:15,014 INFO L85 PathProgramCache]: Analyzing trace with hash -703418094, now seen corresponding path program 1 times [2022-07-12 05:57:15,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:57:15,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626971231] [2022-07-12 05:57:15,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:57:15,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:57:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:15,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 05:57:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:15,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:57:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:15,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 05:57:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:15,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 05:57:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:15,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 05:57:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:15,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 05:57:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:15,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 05:57:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:15,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 05:57:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:15,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 05:57:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:15,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 05:57:15,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:15,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 05:57:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:15,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 05:57:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:15,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 05:57:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:15,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:57:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:15,205 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 05:57:15,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:57:15,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626971231] [2022-07-12 05:57:15,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626971231] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:57:15,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37271024] [2022-07-12 05:57:15,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:57:15,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:57:15,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:57:15,207 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:57:15,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 05:57:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:15,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 1071 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 05:57:15,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:57:15,472 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-12 05:57:15,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:57:15,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37271024] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:57:15,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:57:15,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-12 05:57:15,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296509169] [2022-07-12 05:57:15,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:57:15,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 05:57:15,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:57:15,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 05:57:15,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 05:57:15,474 INFO L87 Difference]: Start difference. First operand 292 states and 438 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (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) [2022-07-12 05:57:15,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:57:15,527 INFO L93 Difference]: Finished difference Result 434 states and 635 transitions. [2022-07-12 05:57:15,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 05:57:15,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (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 116 [2022-07-12 05:57:15,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:57:15,531 INFO L225 Difference]: With dead ends: 434 [2022-07-12 05:57:15,532 INFO L226 Difference]: Without dead ends: 295 [2022-07-12 05:57:15,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 05:57:15,535 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 1 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:57:15,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 870 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:57:15,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-07-12 05:57:15,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 294. [2022-07-12 05:57:15,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 231 states have (on average 1.5194805194805194) internal successors, (351), 234 states have internal predecessors, (351), 45 states have call successors, (45), 17 states have call predecessors, (45), 17 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-07-12 05:57:15,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 440 transitions. [2022-07-12 05:57:15,576 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 440 transitions. Word has length 116 [2022-07-12 05:57:15,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:57:15,576 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 440 transitions. [2022-07-12 05:57:15,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (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) [2022-07-12 05:57:15,577 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 440 transitions. [2022-07-12 05:57:15,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-12 05:57:15,579 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:57:15,579 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-12 05:57:15,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 05:57:15,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-12 05:57:15,802 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:57:15,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:57:15,803 INFO L85 PathProgramCache]: Analyzing trace with hash 571691387, now seen corresponding path program 1 times [2022-07-12 05:57:15,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:57:15,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109661737] [2022-07-12 05:57:15,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:57:15,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:57:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:15,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 05:57:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:15,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:57:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:15,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 05:57:15,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:15,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 05:57:15,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:15,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 05:57:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:15,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 05:57:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:15,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 05:57:15,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:15,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 05:57:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:15,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 05:57:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:15,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 05:57:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:15,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 05:57:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:15,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 05:57:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:15,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 05:57:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:15,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:57:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:15,936 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-12 05:57:15,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:57:15,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109661737] [2022-07-12 05:57:15,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109661737] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:57:15,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784796796] [2022-07-12 05:57:15,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:57:15,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:57:15,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:57:15,940 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:57:15,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 05:57:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:16,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 1085 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:57:16,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:57:16,198 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-12 05:57:16,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:57:16,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784796796] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:57:16,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:57:16,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-12 05:57:16,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594999154] [2022-07-12 05:57:16,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:57:16,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 05:57:16,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:57:16,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 05:57:16,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 05:57:16,202 INFO L87 Difference]: Start difference. First operand 294 states and 440 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2022-07-12 05:57:16,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:57:16,244 INFO L93 Difference]: Finished difference Result 618 states and 939 transitions. [2022-07-12 05:57:16,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 05:57:16,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 122 [2022-07-12 05:57:16,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:57:16,250 INFO L225 Difference]: With dead ends: 618 [2022-07-12 05:57:16,250 INFO L226 Difference]: Without dead ends: 351 [2022-07-12 05:57:16,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 05:57:16,254 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 107 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:57:16,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 854 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:57:16,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-07-12 05:57:16,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 343. [2022-07-12 05:57:16,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 269 states have (on average 1.5353159851301115) internal successors, (413), 272 states have internal predecessors, (413), 56 states have call successors, (56), 17 states have call predecessors, (56), 17 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-07-12 05:57:16,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 524 transitions. [2022-07-12 05:57:16,285 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 524 transitions. Word has length 122 [2022-07-12 05:57:16,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:57:16,285 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 524 transitions. [2022-07-12 05:57:16,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2022-07-12 05:57:16,286 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 524 transitions. [2022-07-12 05:57:16,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-12 05:57:16,289 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:57:16,290 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-12 05:57:16,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 05:57:16,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:57:16,512 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:57:16,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:57:16,512 INFO L85 PathProgramCache]: Analyzing trace with hash 761677637, now seen corresponding path program 1 times [2022-07-12 05:57:16,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:57:16,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757655293] [2022-07-12 05:57:16,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:57:16,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:57:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:16,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 05:57:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:16,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:57:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:16,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 05:57:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:16,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 05:57:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:16,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 05:57:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:16,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 05:57:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:16,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 05:57:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:16,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 05:57:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:16,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 05:57:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:16,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 05:57:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:16,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 05:57:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:16,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 05:57:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:16,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 05:57:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:16,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:57:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:16,615 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-12 05:57:16,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:57:16,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757655293] [2022-07-12 05:57:16,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757655293] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:57:16,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982780009] [2022-07-12 05:57:16,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:57:16,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:57:16,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:57:16,619 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:57:16,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 05:57:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:16,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 1092 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 05:57:16,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:57:16,887 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-12 05:57:16,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:57:16,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982780009] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:57:16,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:57:16,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-07-12 05:57:16,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241207460] [2022-07-12 05:57:16,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:57:16,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 05:57:16,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:57:16,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 05:57:16,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-12 05:57:16,889 INFO L87 Difference]: Start difference. First operand 343 states and 524 transitions. Second operand has 5 states, 4 states have (on average 20.0) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-12 05:57:16,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:57:16,930 INFO L93 Difference]: Finished difference Result 677 states and 1038 transitions. [2022-07-12 05:57:16,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:57:16,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.0) internal successors, (80), 5 states have internal predecessors, (80), 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 123 [2022-07-12 05:57:16,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:57:16,932 INFO L225 Difference]: With dead ends: 677 [2022-07-12 05:57:16,932 INFO L226 Difference]: Without dead ends: 345 [2022-07-12 05:57:16,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-12 05:57:16,934 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 125 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:57:16,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1571 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:57:16,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-07-12 05:57:16,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2022-07-12 05:57:16,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 270 states have (on average 1.5333333333333334) internal successors, (414), 274 states have internal predecessors, (414), 56 states have call successors, (56), 17 states have call predecessors, (56), 18 states have return successors, (57), 55 states have call predecessors, (57), 55 states have call successors, (57) [2022-07-12 05:57:16,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 527 transitions. [2022-07-12 05:57:16,947 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 527 transitions. Word has length 123 [2022-07-12 05:57:16,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:57:16,947 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 527 transitions. [2022-07-12 05:57:16,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.0) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-12 05:57:16,948 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 527 transitions. [2022-07-12 05:57:16,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 05:57:16,949 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:57:16,949 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 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] [2022-07-12 05:57:16,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 05:57:17,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:57:17,154 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:57:17,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:57:17,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1150133454, now seen corresponding path program 1 times [2022-07-12 05:57:17,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:57:17,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387151362] [2022-07-12 05:57:17,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:57:17,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:57:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:17,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 05:57:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:17,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:57:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:17,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 05:57:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:17,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 05:57:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:17,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 05:57:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:17,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:57:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:17,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 05:57:17,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:17,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 05:57:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:17,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:57:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:17,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 05:57:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:17,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 05:57:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:17,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 05:57:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:17,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 05:57:17,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:17,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:57:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:17,264 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-12 05:57:17,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:57:17,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387151362] [2022-07-12 05:57:17,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387151362] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:57:17,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122650718] [2022-07-12 05:57:17,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:57:17,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:57:17,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:57:17,265 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:57:17,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 05:57:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:17,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 05:57:17,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:57:17,507 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-12 05:57:17,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:57:17,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122650718] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:57:17,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:57:17,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-12 05:57:17,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094186061] [2022-07-12 05:57:17,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:57:17,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 05:57:17,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:57:17,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 05:57:17,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-12 05:57:17,510 INFO L87 Difference]: Start difference. First operand 345 states and 527 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2022-07-12 05:57:17,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:57:17,570 INFO L93 Difference]: Finished difference Result 679 states and 1043 transitions. [2022-07-12 05:57:17,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:57:17,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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 124 [2022-07-12 05:57:17,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:57:17,573 INFO L225 Difference]: With dead ends: 679 [2022-07-12 05:57:17,574 INFO L226 Difference]: Without dead ends: 347 [2022-07-12 05:57:17,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-12 05:57:17,575 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 124 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:57:17,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1560 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:57:17,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-07-12 05:57:17,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2022-07-12 05:57:17,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 271 states have (on average 1.5313653136531364) internal successors, (415), 276 states have internal predecessors, (415), 56 states have call successors, (56), 17 states have call predecessors, (56), 19 states have return successors, (62), 55 states have call predecessors, (62), 55 states have call successors, (62) [2022-07-12 05:57:17,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 533 transitions. [2022-07-12 05:57:17,597 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 533 transitions. Word has length 124 [2022-07-12 05:57:17,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:57:17,598 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 533 transitions. [2022-07-12 05:57:17,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2022-07-12 05:57:17,599 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 533 transitions. [2022-07-12 05:57:17,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-12 05:57:17,601 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:57:17,601 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:57:17,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 05:57:17,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:57:17,818 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:57:17,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:57:17,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1920927241, now seen corresponding path program 1 times [2022-07-12 05:57:17,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:57:17,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12087633] [2022-07-12 05:57:17,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:57:17,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:57:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:17,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 05:57:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:17,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:57:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:17,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 05:57:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:17,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 05:57:17,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:17,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:57:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:17,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 05:57:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:17,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 05:57:17,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:17,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 05:57:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:17,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 05:57:17,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:17,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 05:57:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:17,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 05:57:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:17,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 05:57:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:17,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 05:57:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:17,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:57:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:17,899 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-12 05:57:17,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:57:17,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12087633] [2022-07-12 05:57:17,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12087633] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:57:17,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:57:17,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 05:57:17,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802669618] [2022-07-12 05:57:17,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:57:17,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 05:57:17,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:57:17,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 05:57:17,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:57:17,901 INFO L87 Difference]: Start difference. First operand 347 states and 533 transitions. Second operand has 9 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 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) [2022-07-12 05:57:19,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:57:19,132 INFO L93 Difference]: Finished difference Result 818 states and 1253 transitions. [2022-07-12 05:57:19,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 05:57:19,133 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 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 125 [2022-07-12 05:57:19,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:57:19,136 INFO L225 Difference]: With dead ends: 818 [2022-07-12 05:57:19,136 INFO L226 Difference]: Without dead ends: 494 [2022-07-12 05:57:19,137 INFO L412 NwaCegarLoop]: 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 [2022-07-12 05:57:19,137 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 1071 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1711 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 2094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 1711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:57:19,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1088 Valid, 1314 Invalid, 2094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 1711 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 05:57:19,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2022-07-12 05:57:19,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 347. [2022-07-12 05:57:19,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 271 states have (on average 1.5313653136531364) internal successors, (415), 276 states have internal predecessors, (415), 56 states have call successors, (56), 17 states have call predecessors, (56), 19 states have return successors, (61), 55 states have call predecessors, (61), 55 states have call successors, (61) [2022-07-12 05:57:19,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 532 transitions. [2022-07-12 05:57:19,181 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 532 transitions. Word has length 125 [2022-07-12 05:57:19,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:57:19,181 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 532 transitions. [2022-07-12 05:57:19,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 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) [2022-07-12 05:57:19,181 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 532 transitions. [2022-07-12 05:57:19,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-12 05:57:19,184 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:57:19,184 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 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] [2022-07-12 05:57:19,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 05:57:19,184 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:57:19,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:57:19,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1875232994, now seen corresponding path program 2 times [2022-07-12 05:57:19,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:57:19,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393410244] [2022-07-12 05:57:19,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:57:19,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:57:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:19,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 05:57:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:19,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:57:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:19,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 05:57:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:19,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 05:57:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:19,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:57:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:19,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:57:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:19,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 05:57:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:19,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 05:57:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:19,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 05:57:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:19,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 05:57:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:19,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 05:57:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:19,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 05:57:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:19,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 05:57:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:19,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:57:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:19,286 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-12 05:57:19,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:57:19,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393410244] [2022-07-12 05:57:19,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393410244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:57:19,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:57:19,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 05:57:19,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401915978] [2022-07-12 05:57:19,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:57:19,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 05:57:19,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:57:19,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 05:57:19,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:57:19,289 INFO L87 Difference]: Start difference. First operand 347 states and 532 transitions. Second operand has 9 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 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) [2022-07-12 05:57:20,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:57:20,478 INFO L93 Difference]: Finished difference Result 820 states and 1256 transitions. [2022-07-12 05:57:20,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 05:57:20,478 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 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 126 [2022-07-12 05:57:20,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:57:20,481 INFO L225 Difference]: With dead ends: 820 [2022-07-12 05:57:20,481 INFO L226 Difference]: Without dead ends: 496 [2022-07-12 05:57:20,482 INFO L412 NwaCegarLoop]: 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 [2022-07-12 05:57:20,482 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 1130 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1697 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 2106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 1697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:57:20,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 1320 Invalid, 2106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 1697 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 05:57:20,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2022-07-12 05:57:20,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 349. [2022-07-12 05:57:20,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 272 states have (on average 1.5294117647058822) internal successors, (416), 278 states have internal predecessors, (416), 56 states have call successors, (56), 17 states have call predecessors, (56), 20 states have return successors, (63), 55 states have call predecessors, (63), 55 states have call successors, (63) [2022-07-12 05:57:20,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 535 transitions. [2022-07-12 05:57:20,498 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 535 transitions. Word has length 126 [2022-07-12 05:57:20,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:57:20,498 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 535 transitions. [2022-07-12 05:57:20,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 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) [2022-07-12 05:57:20,498 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 535 transitions. [2022-07-12 05:57:20,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-12 05:57:20,500 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:57:20,500 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:57:20,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 05:57:20,500 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:57:20,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:57:20,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1015199076, now seen corresponding path program 1 times [2022-07-12 05:57:20,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:57:20,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759788170] [2022-07-12 05:57:20,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:57:20,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:57:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:20,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 05:57:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:20,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:57:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:20,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 05:57:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:20,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 05:57:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:20,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:57:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:20,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 05:57:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:20,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 05:57:20,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:20,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 05:57:20,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:20,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 05:57:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:20,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 05:57:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:20,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 05:57:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:20,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 05:57:20,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:20,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 05:57:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:20,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:57:20,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:20,639 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-12 05:57:20,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:57:20,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759788170] [2022-07-12 05:57:20,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759788170] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:57:20,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:57:20,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 05:57:20,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345668013] [2022-07-12 05:57:20,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:57:20,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 05:57:20,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:57:20,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 05:57:20,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-12 05:57:20,640 INFO L87 Difference]: Start difference. First operand 349 states and 535 transitions. Second operand has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 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) [2022-07-12 05:57:22,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:57:22,376 INFO L93 Difference]: Finished difference Result 818 states and 1251 transitions. [2022-07-12 05:57:22,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 05:57:22,377 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 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 127 [2022-07-12 05:57:22,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:57:22,380 INFO L225 Difference]: With dead ends: 818 [2022-07-12 05:57:22,380 INFO L226 Difference]: Without dead ends: 496 [2022-07-12 05:57:22,382 INFO L412 NwaCegarLoop]: 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 [2022-07-12 05:57:22,382 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 1142 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3259 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 3695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 3259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 05:57:22,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 1646 Invalid, 3695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 3259 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 05:57:22,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2022-07-12 05:57:22,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 349. [2022-07-12 05:57:22,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 272 states have (on average 1.5294117647058822) internal successors, (416), 278 states have internal predecessors, (416), 56 states have call successors, (56), 17 states have call predecessors, (56), 20 states have return successors, (62), 55 states have call predecessors, (62), 55 states have call successors, (62) [2022-07-12 05:57:22,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 534 transitions. [2022-07-12 05:57:22,400 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 534 transitions. Word has length 127 [2022-07-12 05:57:22,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:57:22,401 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 534 transitions. [2022-07-12 05:57:22,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 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) [2022-07-12 05:57:22,401 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 534 transitions. [2022-07-12 05:57:22,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-12 05:57:22,403 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:57:22,403 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:57:22,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 05:57:22,403 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:57:22,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:57:22,404 INFO L85 PathProgramCache]: Analyzing trace with hash 768592743, now seen corresponding path program 2 times [2022-07-12 05:57:22,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:57:22,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745775990] [2022-07-12 05:57:22,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:57:22,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:57:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:22,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 05:57:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:22,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:57:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:22,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 05:57:22,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:22,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 05:57:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:22,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:57:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:22,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 05:57:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:22,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 05:57:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:22,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 05:57:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:22,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 05:57:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:22,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 05:57:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:22,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 05:57:22,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:22,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 05:57:22,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:22,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 05:57:22,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:22,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:57:22,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:22,542 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-12 05:57:22,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:57:22,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745775990] [2022-07-12 05:57:22,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745775990] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:57:22,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:57:22,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 05:57:22,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495431657] [2022-07-12 05:57:22,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:57:22,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 05:57:22,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:57:22,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 05:57:22,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-12 05:57:22,544 INFO L87 Difference]: Start difference. First operand 349 states and 534 transitions. Second operand has 12 states, 11 states have (on average 7.636363636363637) internal successors, (84), 8 states have internal predecessors, (84), 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) [2022-07-12 05:57:24,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:57:24,209 INFO L93 Difference]: Finished difference Result 820 states and 1257 transitions. [2022-07-12 05:57:24,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 05:57:24,209 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.636363636363637) internal successors, (84), 8 states have internal predecessors, (84), 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 128 [2022-07-12 05:57:24,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:57:24,211 INFO L225 Difference]: With dead ends: 820 [2022-07-12 05:57:24,211 INFO L226 Difference]: Without dead ends: 498 [2022-07-12 05:57:24,212 INFO L412 NwaCegarLoop]: 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 [2022-07-12 05:57:24,213 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 1202 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3138 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1202 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 3572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 3138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 05:57:24,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1202 Valid, 1625 Invalid, 3572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 3138 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 05:57:24,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2022-07-12 05:57:24,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 351. [2022-07-12 05:57:24,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 273 states have (on average 1.5274725274725274) internal successors, (417), 280 states have internal predecessors, (417), 56 states have call successors, (56), 17 states have call predecessors, (56), 21 states have return successors, (67), 55 states have call predecessors, (67), 55 states have call successors, (67) [2022-07-12 05:57:24,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 540 transitions. [2022-07-12 05:57:24,229 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 540 transitions. Word has length 128 [2022-07-12 05:57:24,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:57:24,230 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 540 transitions. [2022-07-12 05:57:24,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.636363636363637) internal successors, (84), 8 states have internal predecessors, (84), 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) [2022-07-12 05:57:24,230 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 540 transitions. [2022-07-12 05:57:24,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-12 05:57:24,231 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:57:24,231 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:57:24,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 05:57:24,232 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:57:24,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:57:24,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1519679615, now seen corresponding path program 1 times [2022-07-12 05:57:24,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:57:24,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427924541] [2022-07-12 05:57:24,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:57:24,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:57:24,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:24,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 05:57:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:24,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:57:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:24,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 05:57:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:24,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 05:57:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:24,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:57:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:24,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 05:57:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:24,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 05:57:24,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:24,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 05:57:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:24,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 05:57:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:24,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 05:57:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:24,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 05:57:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:24,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 05:57:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:24,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 05:57:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:24,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:57:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:24,309 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 05:57:24,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:57:24,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427924541] [2022-07-12 05:57:24,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427924541] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:57:24,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184553126] [2022-07-12 05:57:24,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:57:24,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:57:24,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:57:24,310 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:57:24,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 05:57:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:24,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:57:24,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:57:24,527 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 05:57:24,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 05:57:24,597 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 05:57:24,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184553126] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 05:57:24,598 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 05:57:24,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2022-07-12 05:57:24,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036614981] [2022-07-12 05:57:24,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 05:57:24,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 05:57:24,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:57:24,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 05:57:24,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:57:24,599 INFO L87 Difference]: Start difference. First operand 351 states and 540 transitions. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 7 states have internal predecessors, (114), 2 states have call successors, (34), 6 states have call predecessors, (34), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-12 05:57:26,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:57:26,230 INFO L93 Difference]: Finished difference Result 989 states and 1585 transitions. [2022-07-12 05:57:26,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 05:57:26,230 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 7 states have internal predecessors, (114), 2 states have call successors, (34), 6 states have call predecessors, (34), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 129 [2022-07-12 05:57:26,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:57:26,234 INFO L225 Difference]: With dead ends: 989 [2022-07-12 05:57:26,234 INFO L226 Difference]: Without dead ends: 850 [2022-07-12 05:57:26,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-07-12 05:57:26,237 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 1314 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 2514 mSolverCounterSat, 521 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1359 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 3035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 521 IncrementalHoareTripleChecker+Valid, 2514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 05:57:26,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1359 Valid, 1895 Invalid, 3035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [521 Valid, 2514 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 05:57:26,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2022-07-12 05:57:26,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 679. [2022-07-12 05:57:26,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 537 states have (on average 1.5921787709497206) internal successors, (855), 544 states have internal predecessors, (855), 120 states have call successors, (120), 17 states have call predecessors, (120), 21 states have return successors, (141), 119 states have call predecessors, (141), 119 states have call successors, (141) [2022-07-12 05:57:26,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1116 transitions. [2022-07-12 05:57:26,279 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1116 transitions. Word has length 129 [2022-07-12 05:57:26,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:57:26,279 INFO L495 AbstractCegarLoop]: Abstraction has 679 states and 1116 transitions. [2022-07-12 05:57:26,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 7 states have internal predecessors, (114), 2 states have call successors, (34), 6 states have call predecessors, (34), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-12 05:57:26,279 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1116 transitions. [2022-07-12 05:57:26,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-12 05:57:26,282 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:57:26,282 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:57:26,318 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-12 05:57:26,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:57:26,504 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:57:26,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:57:26,504 INFO L85 PathProgramCache]: Analyzing trace with hash -805071874, now seen corresponding path program 1 times [2022-07-12 05:57:26,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:57:26,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937076668] [2022-07-12 05:57:26,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:57:26,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:57:26,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:26,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 05:57:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:26,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:57:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:26,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 05:57:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:26,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 05:57:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:26,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:57:26,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:26,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 05:57:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:26,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 05:57:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:26,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 05:57:26,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:26,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 05:57:26,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:26,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 05:57:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:26,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 05:57:26,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:26,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 05:57:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:26,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 05:57:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:26,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:57:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:26,582 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 05:57:26,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:57:26,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937076668] [2022-07-12 05:57:26,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937076668] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:57:26,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:57:26,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:57:26,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282686064] [2022-07-12 05:57:26,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:57:26,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:57:26,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:57:26,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:57:26,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:57:26,585 INFO L87 Difference]: Start difference. First operand 679 states and 1116 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) [2022-07-12 05:57:27,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:57:27,534 INFO L93 Difference]: Finished difference Result 1770 states and 2956 transitions. [2022-07-12 05:57:27,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 05:57:27,534 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 135 [2022-07-12 05:57:27,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:57:27,542 INFO L225 Difference]: With dead ends: 1770 [2022-07-12 05:57:27,542 INFO L226 Difference]: Without dead ends: 1159 [2022-07-12 05:57:27,545 INFO L412 NwaCegarLoop]: 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 [2022-07-12 05:57:27,545 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 1065 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 05:57:27,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 1198 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 05:57:27,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2022-07-12 05:57:27,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1004. [2022-07-12 05:57:27,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 798 states have (on average 1.6040100250626566) internal successors, (1280), 805 states have internal predecessors, (1280), 184 states have call successors, (184), 17 states have call predecessors, (184), 21 states have return successors, (215), 183 states have call predecessors, (215), 183 states have call successors, (215) [2022-07-12 05:57:27,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1679 transitions. [2022-07-12 05:57:27,593 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1679 transitions. Word has length 135 [2022-07-12 05:57:27,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:57:27,593 INFO L495 AbstractCegarLoop]: Abstraction has 1004 states and 1679 transitions. [2022-07-12 05:57:27,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (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) [2022-07-12 05:57:27,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1679 transitions. [2022-07-12 05:57:27,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-12 05:57:27,597 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:57:27,597 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:57:27,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 05:57:27,598 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:57:27,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:57:27,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1467472897, now seen corresponding path program 1 times [2022-07-12 05:57:27,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:57:27,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391731231] [2022-07-12 05:57:27,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:57:27,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:57:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:27,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 05:57:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:27,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:57:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:27,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 05:57:27,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:27,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 05:57:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:27,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:57:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:27,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 05:57:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:27,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 05:57:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:27,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 05:57:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:27,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 05:57:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:27,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 05:57:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:27,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 05:57:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:27,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 05:57:27,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:27,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 05:57:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:27,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:57:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:27,668 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 05:57:27,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:57:27,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391731231] [2022-07-12 05:57:27,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391731231] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:57:27,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:57:27,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:57:27,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758505396] [2022-07-12 05:57:27,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:57:27,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:57:27,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:57:27,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:57:27,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:57:27,670 INFO L87 Difference]: Start difference. First operand 1004 states and 1679 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) [2022-07-12 05:57:28,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:57:28,647 INFO L93 Difference]: Finished difference Result 2550 states and 4305 transitions. [2022-07-12 05:57:28,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 05:57:28,648 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 136 [2022-07-12 05:57:28,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:57:28,658 INFO L225 Difference]: With dead ends: 2550 [2022-07-12 05:57:28,659 INFO L226 Difference]: Without dead ends: 1667 [2022-07-12 05:57:28,663 INFO L412 NwaCegarLoop]: 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 [2022-07-12 05:57:28,664 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 1026 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 423 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 423 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 05:57:28,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1041 Valid, 1206 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [423 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 05:57:28,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2022-07-12 05:57:28,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1512. [2022-07-12 05:57:28,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1211 states have (on average 1.611065235342692) internal successors, (1951), 1218 states have internal predecessors, (1951), 279 states have call successors, (279), 17 states have call predecessors, (279), 21 states have return successors, (310), 278 states have call predecessors, (310), 278 states have call successors, (310) [2022-07-12 05:57:28,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 2540 transitions. [2022-07-12 05:57:28,766 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 2540 transitions. Word has length 136 [2022-07-12 05:57:28,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:57:28,766 INFO L495 AbstractCegarLoop]: Abstraction has 1512 states and 2540 transitions. [2022-07-12 05:57:28,766 INFO L496 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) [2022-07-12 05:57:28,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 2540 transitions. [2022-07-12 05:57:28,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-12 05:57:28,773 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:57:28,773 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:57:28,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 05:57:28,773 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:57:28,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:57:28,774 INFO L85 PathProgramCache]: Analyzing trace with hash -543683200, now seen corresponding path program 1 times [2022-07-12 05:57:28,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:57:28,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682235763] [2022-07-12 05:57:28,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:57:28,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:57:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:28,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 05:57:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:28,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:57:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:28,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 05:57:28,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:28,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 05:57:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:28,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:57:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:28,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 05:57:28,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:28,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 05:57:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:28,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 05:57:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:28,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 05:57:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:28,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 05:57:28,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:28,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 05:57:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:28,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 05:57:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:28,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 05:57:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:28,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:57:28,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:28,854 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 05:57:28,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:57:28,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682235763] [2022-07-12 05:57:28,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682235763] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:57:28,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:57:28,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:57:28,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723486684] [2022-07-12 05:57:28,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:57:28,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:57:28,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:57:28,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:57:28,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:57:28,856 INFO L87 Difference]: Start difference. First operand 1512 states and 2540 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) [2022-07-12 05:57:29,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:57:29,888 INFO L93 Difference]: Finished difference Result 3702 states and 6314 transitions. [2022-07-12 05:57:29,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 05:57:29,889 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 137 [2022-07-12 05:57:29,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:57:29,898 INFO L225 Difference]: With dead ends: 3702 [2022-07-12 05:57:29,899 INFO L226 Difference]: Without dead ends: 2436 [2022-07-12 05:57:29,902 INFO L412 NwaCegarLoop]: 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 [2022-07-12 05:57:29,903 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 1075 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 05:57:29,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 1164 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 05:57:29,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2436 states. [2022-07-12 05:57:29,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2436 to 2281. [2022-07-12 05:57:29,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2281 states, 1857 states have (on average 1.6165858912224018) internal successors, (3002), 1864 states have internal predecessors, (3002), 402 states have call successors, (402), 17 states have call predecessors, (402), 21 states have return successors, (449), 401 states have call predecessors, (449), 401 states have call successors, (449) [2022-07-12 05:57:29,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 3853 transitions. [2022-07-12 05:57:29,983 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 3853 transitions. Word has length 137 [2022-07-12 05:57:29,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:57:29,983 INFO L495 AbstractCegarLoop]: Abstraction has 2281 states and 3853 transitions. [2022-07-12 05:57:29,984 INFO L496 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) [2022-07-12 05:57:29,984 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 3853 transitions. [2022-07-12 05:57:29,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-12 05:57:29,992 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:57:29,992 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:57:29,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 05:57:29,993 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:57:29,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:57:29,993 INFO L85 PathProgramCache]: Analyzing trace with hash 736700544, now seen corresponding path program 1 times [2022-07-12 05:57:29,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:57:29,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601615661] [2022-07-12 05:57:29,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:57:29,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:57:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:30,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 05:57:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:30,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:57:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:30,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 05:57:30,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:30,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 05:57:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:30,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:57:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:30,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 05:57:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:30,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:57:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:30,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 05:57:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:30,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 05:57:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:30,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 05:57:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:30,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 05:57:30,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:30,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 05:57:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:30,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 05:57:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:30,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:57:30,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:30,080 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 05:57:30,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:57:30,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601615661] [2022-07-12 05:57:30,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601615661] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:57:30,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:57:30,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:57:30,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681894343] [2022-07-12 05:57:30,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:57:30,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:57:30,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:57:30,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:57:30,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:57:30,081 INFO L87 Difference]: Start difference. First operand 2281 states and 3853 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) [2022-07-12 05:57:31,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:57:31,118 INFO L93 Difference]: Finished difference Result 5496 states and 9448 transitions. [2022-07-12 05:57:31,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 05:57:31,119 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 138 [2022-07-12 05:57:31,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:57:31,134 INFO L225 Difference]: With dead ends: 5496 [2022-07-12 05:57:31,134 INFO L226 Difference]: Without dead ends: 3665 [2022-07-12 05:57:31,139 INFO L412 NwaCegarLoop]: 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 [2022-07-12 05:57:31,139 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 1090 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 05:57:31,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1105 Valid, 1140 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 05:57:31,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3665 states. [2022-07-12 05:57:31,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3665 to 3510. [2022-07-12 05:57:31,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3510 states, 2907 states have (on average 1.6198830409356726) internal successors, (4709), 2914 states have internal predecessors, (4709), 581 states have call successors, (581), 17 states have call predecessors, (581), 21 states have return successors, (654), 580 states have call predecessors, (654), 580 states have call successors, (654) [2022-07-12 05:57:31,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3510 states to 3510 states and 5944 transitions. [2022-07-12 05:57:31,301 INFO L78 Accepts]: Start accepts. Automaton has 3510 states and 5944 transitions. Word has length 138 [2022-07-12 05:57:31,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:57:31,301 INFO L495 AbstractCegarLoop]: Abstraction has 3510 states and 5944 transitions. [2022-07-12 05:57:31,301 INFO L496 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) [2022-07-12 05:57:31,302 INFO L276 IsEmpty]: Start isEmpty. Operand 3510 states and 5944 transitions. [2022-07-12 05:57:31,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-12 05:57:31,312 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:57:31,312 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:57:31,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 05:57:31,312 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:57:31,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:57:31,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1948596892, now seen corresponding path program 1 times [2022-07-12 05:57:31,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:57:31,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920122266] [2022-07-12 05:57:31,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:57:31,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:57:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:31,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 05:57:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:31,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:57:31,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:31,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 05:57:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:31,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 05:57:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:31,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:57:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:31,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 05:57:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:31,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 05:57:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:31,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 05:57:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:31,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 05:57:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:31,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 05:57:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:31,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 05:57:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:31,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 05:57:31,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:31,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 05:57:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:31,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:57:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:31,380 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 05:57:31,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:57:31,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920122266] [2022-07-12 05:57:31,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920122266] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:57:31,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:57:31,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:57:31,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318316950] [2022-07-12 05:57:31,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:57:31,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:57:31,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:57:31,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:57:31,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:57:31,382 INFO L87 Difference]: Start difference. First operand 3510 states and 5944 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) [2022-07-12 05:57:32,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:57:32,440 INFO L93 Difference]: Finished difference Result 8444 states and 14595 transitions. [2022-07-12 05:57:32,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 05:57:32,441 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 139 [2022-07-12 05:57:32,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:57:32,464 INFO L225 Difference]: With dead ends: 8444 [2022-07-12 05:57:32,464 INFO L226 Difference]: Without dead ends: 5696 [2022-07-12 05:57:32,472 INFO L412 NwaCegarLoop]: 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 [2022-07-12 05:57:32,473 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 1049 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 423 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 423 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 05:57:32,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1064 Valid, 1205 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [423 Valid, 954 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 05:57:32,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2022-07-12 05:57:32,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 5541. [2022-07-12 05:57:32,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5541 states, 4562 states have (on average 1.6135466900482245) internal successors, (7361), 4569 states have internal predecessors, (7361), 957 states have call successors, (957), 17 states have call predecessors, (957), 21 states have return successors, (1074), 956 states have call predecessors, (1074), 956 states have call successors, (1074) [2022-07-12 05:57:32,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5541 states to 5541 states and 9392 transitions. [2022-07-12 05:57:32,742 INFO L78 Accepts]: Start accepts. Automaton has 5541 states and 9392 transitions. Word has length 139 [2022-07-12 05:57:32,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:57:32,743 INFO L495 AbstractCegarLoop]: Abstraction has 5541 states and 9392 transitions. [2022-07-12 05:57:32,743 INFO L496 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) [2022-07-12 05:57:32,743 INFO L276 IsEmpty]: Start isEmpty. Operand 5541 states and 9392 transitions. [2022-07-12 05:57:32,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-12 05:57:32,759 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:57:32,759 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:57:32,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 05:57:32,760 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:57:32,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:57:32,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1145408356, now seen corresponding path program 1 times [2022-07-12 05:57:32,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:57:32,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928926633] [2022-07-12 05:57:32,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:57:32,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:57:32,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:32,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 05:57:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:32,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:57:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:32,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 05:57:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:32,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 05:57:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:32,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:57:32,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:32,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 05:57:32,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:32,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 05:57:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:32,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 05:57:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:32,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 05:57:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:32,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 05:57:32,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:32,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 05:57:32,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:32,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 05:57:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:32,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 05:57:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:32,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:57:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:32,836 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 05:57:32,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:57:32,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928926633] [2022-07-12 05:57:32,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928926633] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:57:32,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:57:32,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:57:32,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483322451] [2022-07-12 05:57:32,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:57:32,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:57:32,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:57:32,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:57:32,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:57:32,838 INFO L87 Difference]: Start difference. First operand 5541 states and 9392 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (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) [2022-07-12 05:57:34,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:57:34,010 INFO L93 Difference]: Finished difference Result 13781 states and 23816 transitions. [2022-07-12 05:57:34,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 05:57:34,010 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (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 140 [2022-07-12 05:57:34,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:57:34,053 INFO L225 Difference]: With dead ends: 13781 [2022-07-12 05:57:34,053 INFO L226 Difference]: Without dead ends: 9379 [2022-07-12 05:57:34,066 INFO L412 NwaCegarLoop]: 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 [2022-07-12 05:57:34,067 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 1067 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 05:57:34,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 1163 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 05:57:34,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9379 states. [2022-07-12 05:57:34,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9379 to 9224. [2022-07-12 05:57:34,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9224 states, 7639 states have (on average 1.6110747480036653) internal successors, (12307), 7646 states have internal predecessors, (12307), 1563 states have call successors, (1563), 17 states have call predecessors, (1563), 21 states have return successors, (1758), 1562 states have call predecessors, (1758), 1562 states have call successors, (1758) [2022-07-12 05:57:34,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9224 states to 9224 states and 15628 transitions. [2022-07-12 05:57:34,527 INFO L78 Accepts]: Start accepts. Automaton has 9224 states and 15628 transitions. Word has length 140 [2022-07-12 05:57:34,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:57:34,527 INFO L495 AbstractCegarLoop]: Abstraction has 9224 states and 15628 transitions. [2022-07-12 05:57:34,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (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) [2022-07-12 05:57:34,528 INFO L276 IsEmpty]: Start isEmpty. Operand 9224 states and 15628 transitions. [2022-07-12 05:57:34,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-12 05:57:34,549 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:57:34,549 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:57:34,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 05:57:34,549 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:57:34,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:57:34,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1941188202, now seen corresponding path program 1 times [2022-07-12 05:57:34,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:57:34,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772440603] [2022-07-12 05:57:34,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:57:34,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:57:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:34,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 05:57:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:34,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:57:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:34,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 05:57:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:34,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 05:57:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:34,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:57:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:34,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 05:57:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:34,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 05:57:34,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:34,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 05:57:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:34,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 05:57:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:34,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 05:57:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:34,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 05:57:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:34,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 05:57:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:34,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-12 05:57:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:34,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:57:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:34,628 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 05:57:34,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:57:34,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772440603] [2022-07-12 05:57:34,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772440603] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:57:34,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:57:34,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:57:34,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281955208] [2022-07-12 05:57:34,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:57:34,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:57:34,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:57:34,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:57:34,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:57:34,630 INFO L87 Difference]: Start difference. First operand 9224 states and 15628 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (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) [2022-07-12 05:57:35,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:57:35,955 INFO L93 Difference]: Finished difference Result 23965 states and 41362 transitions. [2022-07-12 05:57:35,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 05:57:35,956 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (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 141 [2022-07-12 05:57:35,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:57:36,008 INFO L225 Difference]: With dead ends: 23965 [2022-07-12 05:57:36,008 INFO L226 Difference]: Without dead ends: 16332 [2022-07-12 05:57:36,032 INFO L412 NwaCegarLoop]: 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 [2022-07-12 05:57:36,033 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 1059 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 05:57:36,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 1241 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 05:57:36,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16332 states. [2022-07-12 05:57:36,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16332 to 16177. [2022-07-12 05:57:36,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16177 states, 13389 states have (on average 1.6019867055045187) internal successors, (21449), 13396 states have internal predecessors, (21449), 2766 states have call successors, (2766), 17 states have call predecessors, (2766), 21 states have return successors, (3105), 2765 states have call predecessors, (3105), 2765 states have call successors, (3105) [2022-07-12 05:57:36,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16177 states to 16177 states and 27320 transitions. [2022-07-12 05:57:36,834 INFO L78 Accepts]: Start accepts. Automaton has 16177 states and 27320 transitions. Word has length 141 [2022-07-12 05:57:36,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:57:36,834 INFO L495 AbstractCegarLoop]: Abstraction has 16177 states and 27320 transitions. [2022-07-12 05:57:36,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (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) [2022-07-12 05:57:36,834 INFO L276 IsEmpty]: Start isEmpty. Operand 16177 states and 27320 transitions. [2022-07-12 05:57:36,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-12 05:57:36,861 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:57:36,861 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:57:36,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 05:57:36,862 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:57:36,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:57:36,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1855002885, now seen corresponding path program 1 times [2022-07-12 05:57:36,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:57:36,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446824164] [2022-07-12 05:57:36,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:57:36,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:57:36,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:36,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 05:57:36,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:36,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:57:36,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:36,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 05:57:36,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:36,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 05:57:36,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:36,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:57:36,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:36,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 05:57:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:36,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 05:57:36,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:36,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 05:57:36,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:36,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 05:57:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:36,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 05:57:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:36,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 05:57:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:36,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 05:57:36,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:36,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-12 05:57:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:36,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:57:36,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:36,931 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 05:57:36,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:57:36,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446824164] [2022-07-12 05:57:36,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446824164] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:57:36,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:57:36,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:57:36,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556259735] [2022-07-12 05:57:36,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:57:36,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:57:36,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:57:36,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:57:36,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:57:36,933 INFO L87 Difference]: Start difference. First operand 16177 states and 27320 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (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) [2022-07-12 05:57:38,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:57:38,868 INFO L93 Difference]: Finished difference Result 42931 states and 73961 transitions. [2022-07-12 05:57:38,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 05:57:38,869 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (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 142 [2022-07-12 05:57:38,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:57:39,010 INFO L225 Difference]: With dead ends: 42931 [2022-07-12 05:57:39,010 INFO L226 Difference]: Without dead ends: 28987 [2022-07-12 05:57:39,062 INFO L412 NwaCegarLoop]: 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 [2022-07-12 05:57:39,062 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 1139 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 05:57:39,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1154 Valid, 1151 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 05:57:39,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28987 states. [2022-07-12 05:57:40,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28987 to 28832. [2022-07-12 05:57:40,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28832 states, 24005 states have (on average 1.5977088106644448) internal successors, (38353), 24012 states have internal predecessors, (38353), 4805 states have call successors, (4805), 17 states have call predecessors, (4805), 21 states have return successors, (5418), 4804 states have call predecessors, (5418), 4804 states have call successors, (5418) [2022-07-12 05:57:40,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28832 states to 28832 states and 48576 transitions. [2022-07-12 05:57:40,962 INFO L78 Accepts]: Start accepts. Automaton has 28832 states and 48576 transitions. Word has length 142 [2022-07-12 05:57:40,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:57:40,963 INFO L495 AbstractCegarLoop]: Abstraction has 28832 states and 48576 transitions. [2022-07-12 05:57:40,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (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) [2022-07-12 05:57:40,963 INFO L276 IsEmpty]: Start isEmpty. Operand 28832 states and 48576 transitions. [2022-07-12 05:57:41,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-12 05:57:41,222 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:57:41,222 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:57:41,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 05:57:41,223 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:57:41,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:57:41,223 INFO L85 PathProgramCache]: Analyzing trace with hash -92590932, now seen corresponding path program 1 times [2022-07-12 05:57:41,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:57:41,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704406500] [2022-07-12 05:57:41,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:57:41,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:57:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:41,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 05:57:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:41,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:57:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:41,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 05:57:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:41,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 05:57:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:41,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:57:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:41,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 05:57:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:41,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 05:57:41,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:41,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 05:57:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:41,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 05:57:41,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:41,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 05:57:41,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:41,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 05:57:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:41,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 05:57:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:41,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 05:57:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:41,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:57:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:41,324 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 05:57:41,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:57:41,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704406500] [2022-07-12 05:57:41,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704406500] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:57:41,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:57:41,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:57:41,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238054245] [2022-07-12 05:57:41,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:57:41,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:57:41,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:57:41,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:57:41,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:57:41,328 INFO L87 Difference]: Start difference. First operand 28832 states and 48576 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (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) [2022-07-12 05:57:44,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:57:44,423 INFO L93 Difference]: Finished difference Result 78693 states and 134720 transitions. [2022-07-12 05:57:44,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 05:57:44,428 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (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 143 [2022-07-12 05:57:44,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:57:44,666 INFO L225 Difference]: With dead ends: 78693 [2022-07-12 05:57:44,667 INFO L226 Difference]: Without dead ends: 52866 [2022-07-12 05:57:44,750 INFO L412 NwaCegarLoop]: 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 [2022-07-12 05:57:44,750 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 1055 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 05:57:44,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1070 Valid, 1184 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 05:57:44,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52866 states. [2022-07-12 05:57:47,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52866 to 52711. [2022-07-12 05:57:47,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52711 states, 44169 states have (on average 1.5921121148316693) internal successors, (70322), 44176 states have internal predecessors, (70322), 8520 states have call successors, (8520), 17 states have call predecessors, (8520), 21 states have return successors, (9665), 8519 states have call predecessors, (9665), 8519 states have call successors, (9665) [2022-07-12 05:57:47,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52711 states to 52711 states and 88507 transitions. [2022-07-12 05:57:47,324 INFO L78 Accepts]: Start accepts. Automaton has 52711 states and 88507 transitions. Word has length 143 [2022-07-12 05:57:47,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:57:47,325 INFO L495 AbstractCegarLoop]: Abstraction has 52711 states and 88507 transitions. [2022-07-12 05:57:47,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (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) [2022-07-12 05:57:47,325 INFO L276 IsEmpty]: Start isEmpty. Operand 52711 states and 88507 transitions. [2022-07-12 05:57:47,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-12 05:57:47,374 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:57:47,375 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:57:47,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 05:57:47,375 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:57:47,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:57:47,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1419007045, now seen corresponding path program 1 times [2022-07-12 05:57:47,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:57:47,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319943178] [2022-07-12 05:57:47,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:57:47,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:57:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:47,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 05:57:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:47,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:57:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:47,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 05:57:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:47,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 05:57:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:47,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:57:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:47,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 05:57:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:47,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 05:57:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:47,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 05:57:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:47,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 05:57:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:47,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 05:57:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:47,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 05:57:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:47,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 05:57:47,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:47,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 05:57:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:47,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:57:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:47,701 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 05:57:47,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:57:47,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319943178] [2022-07-12 05:57:47,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319943178] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:57:47,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:57:47,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:57:47,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332610499] [2022-07-12 05:57:47,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:57:47,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:57:47,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:57:47,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:57:47,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:57:47,704 INFO L87 Difference]: Start difference. First operand 52711 states and 88507 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 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) [2022-07-12 05:57:51,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:57:51,332 INFO L93 Difference]: Finished difference Result 98464 states and 168907 transitions. [2022-07-12 05:57:51,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 05:57:51,332 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 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 144 [2022-07-12 05:57:51,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:57:51,724 INFO L225 Difference]: With dead ends: 98464 [2022-07-12 05:57:51,724 INFO L226 Difference]: Without dead ends: 98325 [2022-07-12 05:57:51,774 INFO L412 NwaCegarLoop]: 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 [2022-07-12 05:57:51,775 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 1006 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 05:57:51,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1021 Valid, 1197 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 05:57:51,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98325 states. [2022-07-12 05:57:55,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98325 to 98170. [2022-07-12 05:57:55,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98170 states, 82829 states have (on average 1.58509700708689) internal successors, (131292), 82836 states have internal predecessors, (131292), 15319 states have call successors, (15319), 17 states have call predecessors, (15319), 21 states have return successors, (17510), 15318 states have call predecessors, (17510), 15318 states have call successors, (17510) [2022-07-12 05:57:56,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98170 states to 98170 states and 164121 transitions. [2022-07-12 05:57:56,217 INFO L78 Accepts]: Start accepts. Automaton has 98170 states and 164121 transitions. Word has length 144 [2022-07-12 05:57:56,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:57:56,217 INFO L495 AbstractCegarLoop]: Abstraction has 98170 states and 164121 transitions. [2022-07-12 05:57:56,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 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) [2022-07-12 05:57:56,217 INFO L276 IsEmpty]: Start isEmpty. Operand 98170 states and 164121 transitions. [2022-07-12 05:57:56,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 05:57:56,282 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:57:56,282 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:57:56,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 05:57:56,282 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:57:56,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:57:56,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1257113227, now seen corresponding path program 1 times [2022-07-12 05:57:56,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:57:56,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617009548] [2022-07-12 05:57:56,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:57:56,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:57:56,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:56,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 05:57:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:56,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:57:56,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:56,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 05:57:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:56,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 05:57:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:56,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:57:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:56,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 05:57:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:56,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 05:57:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:56,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 05:57:56,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:56,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 05:57:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:56,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 05:57:56,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:56,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 05:57:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:56,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 05:57:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:56,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 05:57:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:56,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:57:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:56,418 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-12 05:57:56,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:57:56,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617009548] [2022-07-12 05:57:56,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617009548] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:57:56,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402765530] [2022-07-12 05:57:56,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:57:56,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:57:56,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:57:56,421 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:57:56,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 05:57:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:57:56,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 1167 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-12 05:57:56,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:57:56,959 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 05:57:56,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:57:56,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402765530] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:57:56,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:57:56,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 26 [2022-07-12 05:57:56,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509190328] [2022-07-12 05:57:56,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:57:56,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 05:57:56,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:57:56,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 05:57:56,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2022-07-12 05:57:56,960 INFO L87 Difference]: Start difference. First operand 98170 states and 164121 transitions. Second operand has 12 states, 11 states have (on average 9.909090909090908) internal successors, (109), 9 states have internal predecessors, (109), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2022-07-12 05:58:03,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:58:03,969 INFO L93 Difference]: Finished difference Result 195738 states and 332707 transitions. [2022-07-12 05:58:03,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 05:58:03,970 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.909090909090908) internal successors, (109), 9 states have internal predecessors, (109), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 145 [2022-07-12 05:58:03,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:58:04,734 INFO L225 Difference]: With dead ends: 195738 [2022-07-12 05:58:04,734 INFO L226 Difference]: Without dead ends: 195605 [2022-07-12 05:58:04,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=166, Invalid=1166, Unknown=0, NotChecked=0, Total=1332 [2022-07-12 05:58:04,818 INFO L413 NwaCegarLoop]: 677 mSDtfsCounter, 878 mSDsluCounter, 4681 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 5358 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 05:58:04,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 5358 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1236 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 05:58:04,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195605 states. [2022-07-12 05:58:14,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195605 to 195556. [2022-07-12 05:58:14,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195556 states, 165064 states have (on average 1.5859060727960064) internal successors, (261776), 164969 states have internal predecessors, (261776), 30440 states have call successors, (30440), 44 states have call predecessors, (30440), 51 states have return successors, (38097), 30550 states have call predecessors, (38097), 30437 states have call successors, (38097) [2022-07-12 05:58:15,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195556 states to 195556 states and 330313 transitions. [2022-07-12 05:58:15,177 INFO L78 Accepts]: Start accepts. Automaton has 195556 states and 330313 transitions. Word has length 145 [2022-07-12 05:58:15,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:58:15,177 INFO L495 AbstractCegarLoop]: Abstraction has 195556 states and 330313 transitions. [2022-07-12 05:58:15,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.909090909090908) internal successors, (109), 9 states have internal predecessors, (109), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2022-07-12 05:58:15,178 INFO L276 IsEmpty]: Start isEmpty. Operand 195556 states and 330313 transitions. [2022-07-12 05:58:15,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 05:58:15,298 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:58:15,298 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:58:15,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 05:58:15,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:58:15,501 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:58:15,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:58:15,501 INFO L85 PathProgramCache]: Analyzing trace with hash 21918144, now seen corresponding path program 1 times [2022-07-12 05:58:15,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:58:15,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211690082] [2022-07-12 05:58:15,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:58:15,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:58:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:58:15,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 05:58:15,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:58:15,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:58:15,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:58:15,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 05:58:15,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:58:15,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 05:58:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:58:15,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:58:15,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:58:15,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 05:58:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:58:15,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 05:58:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:58:15,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 05:58:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:58:15,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 05:58:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:58:15,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 05:58:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:58:15,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 05:58:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:58:15,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 05:58:15,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:58:15,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 05:58:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:58:15,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:58:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:58:15,603 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 05:58:15,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:58:15,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211690082] [2022-07-12 05:58:15,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211690082] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:58:15,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:58:15,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 05:58:15,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142951442] [2022-07-12 05:58:15,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:58:15,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 05:58:15,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:58:15,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 05:58:15,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-12 05:58:15,605 INFO L87 Difference]: Start difference. First operand 195556 states and 330313 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 6 states have internal predecessors, (97), 5 states have call successors, (16), 7 states have call predecessors, (16), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14)