./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec1_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/email_spec1_product30.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 c07a23e40b849b33d08a88f08826cd6b68b33a2f2aee4edabb68f594c2a0aef6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 17:09:16,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 17:09:16,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 17:09:16,939 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 17:09:16,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 17:09:16,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 17:09:16,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 17:09:16,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 17:09:16,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 17:09:16,944 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 17:09:16,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 17:09:16,945 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 17:09:16,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 17:09:16,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 17:09:16,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 17:09:16,948 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 17:09:16,948 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 17:09:16,949 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 17:09:16,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 17:09:16,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 17:09:16,969 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 17:09:16,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 17:09:16,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 17:09:16,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 17:09:16,986 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 17:09:16,988 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 17:09:16,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 17:09:16,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 17:09:16,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 17:09:16,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 17:09:16,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 17:09:16,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 17:09:16,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 17:09:16,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 17:09:16,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 17:09:16,992 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 17:09:16,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 17:09:16,993 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 17:09:16,993 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 17:09:16,993 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 17:09:16,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 17:09:17,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 17:09:17,003 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 17:09:17,025 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 17:09:17,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 17:09:17,027 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 17:09:17,027 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 17:09:17,027 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 17:09:17,027 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 17:09:17,028 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 17:09:17,028 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 17:09:17,028 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 17:09:17,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 17:09:17,029 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 17:09:17,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 17:09:17,029 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 17:09:17,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 17:09:17,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 17:09:17,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 17:09:17,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 17:09:17,030 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 17:09:17,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 17:09:17,031 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 17:09:17,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 17:09:17,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 17:09:17,032 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 17:09:17,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 17:09:17,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:09:17,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 17:09:17,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 17:09:17,033 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 17:09:17,033 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 17:09:17,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 17:09:17,033 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 17:09:17,034 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 17:09:17,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 17:09:17,034 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c07a23e40b849b33d08a88f08826cd6b68b33a2f2aee4edabb68f594c2a0aef6 [2022-07-19 17:09:17,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 17:09:17,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 17:09:17,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 17:09:17,264 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 17:09:17,264 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 17:09:17,265 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec1_product30.cil.c [2022-07-19 17:09:17,315 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6377f4583/2897e977354f49ba8481d294e71eb656/FLAG231312604 [2022-07-19 17:09:17,721 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 17:09:17,722 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec1_product30.cil.c [2022-07-19 17:09:17,738 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6377f4583/2897e977354f49ba8481d294e71eb656/FLAG231312604 [2022-07-19 17:09:18,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6377f4583/2897e977354f49ba8481d294e71eb656 [2022-07-19 17:09:18,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 17:09:18,048 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 17:09:18,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 17:09:18,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 17:09:18,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 17:09:18,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:09:18" (1/1) ... [2022-07-19 17:09:18,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11337d94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:09:18, skipping insertion in model container [2022-07-19 17:09:18,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:09:18" (1/1) ... [2022-07-19 17:09:18,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 17:09:18,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 17:09:18,534 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec1_product30.cil.c[58327,58340] [2022-07-19 17:09:18,543 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:09:18,549 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 17:09:18,617 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec1_product30.cil.c[58327,58340] [2022-07-19 17:09:18,621 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:09:18,642 INFO L208 MainTranslator]: Completed translation [2022-07-19 17:09:18,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:09:18 WrapperNode [2022-07-19 17:09:18,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 17:09:18,643 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 17:09:18,643 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 17:09:18,643 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 17:09:18,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:09:18" (1/1) ... [2022-07-19 17:09:18,675 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:09:18" (1/1) ... [2022-07-19 17:09:18,711 INFO L137 Inliner]: procedures = 131, calls = 218, calls flagged for inlining = 60, calls inlined = 50, statements flattened = 909 [2022-07-19 17:09:18,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 17:09:18,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 17:09:18,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 17:09:18,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 17:09:18,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:09:18" (1/1) ... [2022-07-19 17:09:18,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:09:18" (1/1) ... [2022-07-19 17:09:18,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:09:18" (1/1) ... [2022-07-19 17:09:18,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:09:18" (1/1) ... [2022-07-19 17:09:18,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:09:18" (1/1) ... [2022-07-19 17:09:18,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:09:18" (1/1) ... [2022-07-19 17:09:18,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:09:18" (1/1) ... [2022-07-19 17:09:18,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 17:09:18,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 17:09:18,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 17:09:18,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 17:09:18,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:09:18" (1/1) ... [2022-07-19 17:09:18,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:09:18,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:09:18,822 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) [2022-07-19 17:09:18,840 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 [2022-07-19 17:09:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-07-19 17:09:18,852 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-07-19 17:09:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-07-19 17:09:18,852 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-07-19 17:09:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-07-19 17:09:18,852 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-07-19 17:09:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-07-19 17:09:18,853 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-07-19 17:09:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-07-19 17:09:18,853 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-07-19 17:09:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-07-19 17:09:18,854 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-07-19 17:09:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-07-19 17:09:18,854 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-07-19 17:09:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-07-19 17:09:18,854 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-07-19 17:09:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-07-19 17:09:18,854 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-07-19 17:09:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-07-19 17:09:18,855 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-07-19 17:09:18,855 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-07-19 17:09:18,855 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-07-19 17:09:18,855 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-07-19 17:09:18,855 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-07-19 17:09:18,855 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-07-19 17:09:18,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 17:09:18,855 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-07-19 17:09:18,855 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-07-19 17:09:18,856 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-07-19 17:09:18,856 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-07-19 17:09:18,856 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-07-19 17:09:18,856 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-07-19 17:09:18,856 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-07-19 17:09:18,856 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-07-19 17:09:18,857 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-07-19 17:09:18,857 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-07-19 17:09:18,857 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-07-19 17:09:18,857 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-07-19 17:09:18,857 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-07-19 17:09:18,857 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-07-19 17:09:18,857 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-07-19 17:09:18,857 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-07-19 17:09:18,858 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-07-19 17:09:18,858 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-07-19 17:09:18,858 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-07-19 17:09:18,858 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-07-19 17:09:18,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 17:09:18,858 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-07-19 17:09:18,858 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-07-19 17:09:18,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 17:09:18,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 17:09:19,061 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 17:09:19,063 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 17:09:19,532 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 17:09:19,538 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 17:09:19,538 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 17:09:19,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:09:19 BoogieIcfgContainer [2022-07-19 17:09:19,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 17:09:19,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 17:09:19,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 17:09:19,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 17:09:19,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 05:09:18" (1/3) ... [2022-07-19 17:09:19,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed74371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:09:19, skipping insertion in model container [2022-07-19 17:09:19,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:09:18" (2/3) ... [2022-07-19 17:09:19,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed74371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:09:19, skipping insertion in model container [2022-07-19 17:09:19,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:09:19" (3/3) ... [2022-07-19 17:09:19,545 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec1_product30.cil.c [2022-07-19 17:09:19,554 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 17:09:19,554 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 17:09:19,616 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 17:09:19,622 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@682fd88, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4b88d810 [2022-07-19 17:09:19,622 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 17:09:19,634 INFO L276 IsEmpty]: Start isEmpty. Operand has 347 states, 269 states have (on average 1.516728624535316) internal successors, (408), 273 states have internal predecessors, (408), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-07-19 17:09:19,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 17:09:19,657 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:09:19,657 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:09:19,658 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:09:19,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:09:19,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1478262703, now seen corresponding path program 1 times [2022-07-19 17:09:19,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:09:19,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790672141] [2022-07-19 17:09:19,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:09:19,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:09:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:19,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:09:19,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:19,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:09:19,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:19,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:09:19,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:20,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 17:09:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:20,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 17:09:20,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:20,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 17:09:20,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:20,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 17:09:20,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:20,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 17:09:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:20,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 17:09:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:20,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 17:09:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:20,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 17:09:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:20,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 17:09:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:20,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 17:09:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:20,085 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-19 17:09:20,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:09:20,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790672141] [2022-07-19 17:09:20,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790672141] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:09:20,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021321443] [2022-07-19 17:09:20,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:09:20,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:09:20,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:09:20,091 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) [2022-07-19 17:09:20,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 17:09:20,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:20,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 1051 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-19 17:09:20,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:09:20,363 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-19 17:09:20,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:09:20,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021321443] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:09:20,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:09:20,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-07-19 17:09:20,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316394420] [2022-07-19 17:09:20,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:09:20,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 17:09:20,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:09:20,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 17:09:20,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:09:20,388 INFO L87 Difference]: Start difference. First operand has 347 states, 269 states have (on average 1.516728624535316) internal successors, (408), 273 states have internal predecessors, (408), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 17:09:20,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:09:20,421 INFO L93 Difference]: Finished difference Result 540 states and 782 transitions. [2022-07-19 17:09:20,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 17:09:20,423 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 101 [2022-07-19 17:09:20,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:09:20,432 INFO L225 Difference]: With dead ends: 540 [2022-07-19 17:09:20,432 INFO L226 Difference]: Without dead ends: 340 [2022-07-19 17:09:20,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:09:20,438 INFO L413 NwaCegarLoop]: 510 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, 510 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 [2022-07-19 17:09:20,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:09:20,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-07-19 17:09:20,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2022-07-19 17:09:20,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 263 states have (on average 1.5095057034220531) internal successors, (397), 266 states have internal predecessors, (397), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-07-19 17:09:20,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 502 transitions. [2022-07-19 17:09:20,516 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 502 transitions. Word has length 101 [2022-07-19 17:09:20,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:09:20,517 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 502 transitions. [2022-07-19 17:09:20,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 17:09:20,517 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 502 transitions. [2022-07-19 17:09:20,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-19 17:09:20,520 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:09:20,520 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:09:20,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 17:09:20,720 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 [2022-07-19 17:09:20,721 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:09:20,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:09:20,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1284030147, now seen corresponding path program 1 times [2022-07-19 17:09:20,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:09:20,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3612228] [2022-07-19 17:09:20,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:09:20,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:09:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:20,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:09:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:20,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:09:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:20,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:09:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:20,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 17:09:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:20,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 17:09:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:20,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 17:09:20,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:20,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 17:09:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:20,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:09:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:20,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 17:09:20,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:20,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 17:09:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:20,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 17:09:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:20,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 17:09:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:20,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 17:09:20,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:20,910 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-19 17:09:20,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:09:20,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3612228] [2022-07-19 17:09:20,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3612228] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:09:20,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979655276] [2022-07-19 17:09:20,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:09:20,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:09:20,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:09:20,912 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) [2022-07-19 17:09:20,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 17:09:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:21,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 1052 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 17:09:21,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:09:21,179 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-19 17:09:21,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:09:21,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979655276] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:09:21,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:09:21,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-19 17:09:21,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239125923] [2022-07-19 17:09:21,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:09:21,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:09:21,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:09:21,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:09:21,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:09:21,199 INFO L87 Difference]: Start difference. First operand 340 states and 502 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 17:09:21,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:09:21,234 INFO L93 Difference]: Finished difference Result 530 states and 763 transitions. [2022-07-19 17:09:21,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:09:21,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 102 [2022-07-19 17:09:21,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:09:21,242 INFO L225 Difference]: With dead ends: 530 [2022-07-19 17:09:21,242 INFO L226 Difference]: Without dead ends: 343 [2022-07-19 17:09:21,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:09:21,244 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 1 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 998 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 [2022-07-19 17:09:21,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 998 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:09:21,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-07-19 17:09:21,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 342. [2022-07-19 17:09:21,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 265 states have (on average 1.5056603773584907) internal successors, (399), 268 states have internal predecessors, (399), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-07-19 17:09:21,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 504 transitions. [2022-07-19 17:09:21,276 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 504 transitions. Word has length 102 [2022-07-19 17:09:21,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:09:21,277 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 504 transitions. [2022-07-19 17:09:21,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 17:09:21,277 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 504 transitions. [2022-07-19 17:09:21,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-19 17:09:21,279 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:09:21,279 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:09:21,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 17:09:21,497 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 [2022-07-19 17:09:21,497 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:09:21,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:09:21,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1065468452, now seen corresponding path program 1 times [2022-07-19 17:09:21,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:09:21,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913947892] [2022-07-19 17:09:21,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:09:21,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:09:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:21,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:09:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:21,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:09:21,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:21,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:09:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:21,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 17:09:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:21,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 17:09:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:21,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 17:09:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:21,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 17:09:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:21,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 17:09:21,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:21,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 17:09:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:21,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 17:09:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:21,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 17:09:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:21,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 17:09:21,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:21,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 17:09:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:21,613 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 17:09:21,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:09:21,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913947892] [2022-07-19 17:09:21,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913947892] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:09:21,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056928679] [2022-07-19 17:09:21,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:09:21,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:09:21,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:09:21,615 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) [2022-07-19 17:09:21,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 17:09:21,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:21,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 17:09:21,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:09:21,877 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-19 17:09:21,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:09:21,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056928679] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:09:21,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:09:21,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-19 17:09:21,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931892816] [2022-07-19 17:09:21,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:09:21,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:09:21,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:09:21,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:09:21,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:09:21,879 INFO L87 Difference]: Start difference. First operand 342 states and 504 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 17:09:21,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:09:21,900 INFO L93 Difference]: Finished difference Result 714 states and 1067 transitions. [2022-07-19 17:09:21,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:09:21,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2022-07-19 17:09:21,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:09:21,907 INFO L225 Difference]: With dead ends: 714 [2022-07-19 17:09:21,907 INFO L226 Difference]: Without dead ends: 399 [2022-07-19 17:09:21,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:09:21,910 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 107 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 979 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 [2022-07-19 17:09:21,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 979 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:09:21,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-07-19 17:09:21,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 391. [2022-07-19 17:09:21,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 303 states have (on average 1.5214521452145215) internal successors, (461), 306 states have internal predecessors, (461), 64 states have call successors, (64), 23 states have call predecessors, (64), 23 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-07-19 17:09:21,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 588 transitions. [2022-07-19 17:09:21,923 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 588 transitions. Word has length 111 [2022-07-19 17:09:21,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:09:21,924 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 588 transitions. [2022-07-19 17:09:21,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 17:09:21,924 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 588 transitions. [2022-07-19 17:09:21,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-19 17:09:21,925 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:09:21,925 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:09:21,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 17:09:22,143 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 [2022-07-19 17:09:22,144 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:09:22,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:09:22,145 INFO L85 PathProgramCache]: Analyzing trace with hash -875235926, now seen corresponding path program 1 times [2022-07-19 17:09:22,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:09:22,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325410883] [2022-07-19 17:09:22,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:09:22,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:09:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:22,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:09:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:22,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:09:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:22,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:09:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:22,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 17:09:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:22,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 17:09:22,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:22,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 17:09:22,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:22,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 17:09:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:22,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 17:09:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:22,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 17:09:22,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:22,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 17:09:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:22,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 17:09:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:22,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 17:09:22,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:22,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 17:09:22,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:22,278 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 17:09:22,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:09:22,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325410883] [2022-07-19 17:09:22,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325410883] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:09:22,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162837176] [2022-07-19 17:09:22,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:09:22,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:09:22,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:09:22,280 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) [2022-07-19 17:09:22,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 17:09:22,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:22,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 17:09:22,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:09:22,557 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 17:09:22,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:09:22,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162837176] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:09:22,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:09:22,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-07-19 17:09:22,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676884349] [2022-07-19 17:09:22,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:09:22,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 17:09:22,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:09:22,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 17:09:22,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-19 17:09:22,561 INFO L87 Difference]: Start difference. First operand 391 states and 588 transitions. Second operand has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-19 17:09:22,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:09:22,615 INFO L93 Difference]: Finished difference Result 773 states and 1166 transitions. [2022-07-19 17:09:22,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 17:09:22,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 112 [2022-07-19 17:09:22,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:09:22,618 INFO L225 Difference]: With dead ends: 773 [2022-07-19 17:09:22,618 INFO L226 Difference]: Without dead ends: 393 [2022-07-19 17:09:22,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:09:22,619 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 125 mSDsluCounter, 1334 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1827 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 [2022-07-19 17:09:22,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1827 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:09:22,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-07-19 17:09:22,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2022-07-19 17:09:22,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 304 states have (on average 1.519736842105263) internal successors, (462), 308 states have internal predecessors, (462), 64 states have call successors, (64), 23 states have call predecessors, (64), 24 states have return successors, (65), 63 states have call predecessors, (65), 63 states have call successors, (65) [2022-07-19 17:09:22,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 591 transitions. [2022-07-19 17:09:22,647 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 591 transitions. Word has length 112 [2022-07-19 17:09:22,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:09:22,648 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 591 transitions. [2022-07-19 17:09:22,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-19 17:09:22,648 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 591 transitions. [2022-07-19 17:09:22,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-19 17:09:22,649 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:09:22,649 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:09:22,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 17:09:22,868 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 [2022-07-19 17:09:22,868 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:09:22,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:09:22,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1490413496, now seen corresponding path program 1 times [2022-07-19 17:09:22,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:09:22,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698207039] [2022-07-19 17:09:22,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:09:22,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:09:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:22,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:09:22,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:22,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:09:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:22,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:09:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:22,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:09:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:22,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 17:09:22,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:22,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 17:09:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:22,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 17:09:22,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:22,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 17:09:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:22,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 17:09:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:22,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 17:09:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:22,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 17:09:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:22,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 17:09:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:22,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 17:09:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:22,988 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-19 17:09:22,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:09:22,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698207039] [2022-07-19 17:09:22,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698207039] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:09:22,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338318147] [2022-07-19 17:09:22,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:09:22,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:09:22,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:09:22,990 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) [2022-07-19 17:09:22,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 17:09:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:23,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 17:09:23,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:09:23,237 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 17:09:23,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:09:23,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338318147] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:09:23,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:09:23,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-19 17:09:23,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921399841] [2022-07-19 17:09:23,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:09:23,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 17:09:23,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:09:23,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 17:09:23,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-19 17:09:23,238 INFO L87 Difference]: Start difference. First operand 393 states and 591 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-19 17:09:23,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:09:23,297 INFO L93 Difference]: Finished difference Result 775 states and 1171 transitions. [2022-07-19 17:09:23,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 17:09:23,297 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2022-07-19 17:09:23,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:09:23,299 INFO L225 Difference]: With dead ends: 775 [2022-07-19 17:09:23,299 INFO L226 Difference]: Without dead ends: 395 [2022-07-19 17:09:23,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:09:23,301 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 124 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1816 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 [2022-07-19 17:09:23,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1816 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:09:23,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-07-19 17:09:23,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2022-07-19 17:09:23,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 305 states have (on average 1.518032786885246) internal successors, (463), 310 states have internal predecessors, (463), 64 states have call successors, (64), 23 states have call predecessors, (64), 25 states have return successors, (70), 63 states have call predecessors, (70), 63 states have call successors, (70) [2022-07-19 17:09:23,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 597 transitions. [2022-07-19 17:09:23,315 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 597 transitions. Word has length 113 [2022-07-19 17:09:23,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:09:23,315 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 597 transitions. [2022-07-19 17:09:23,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-19 17:09:23,316 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 597 transitions. [2022-07-19 17:09:23,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-19 17:09:23,317 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:09:23,317 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:09:23,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-19 17:09:23,539 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 [2022-07-19 17:09:23,540 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:09:23,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:09:23,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1538264855, now seen corresponding path program 1 times [2022-07-19 17:09:23,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:09:23,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792912859] [2022-07-19 17:09:23,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:09:23,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:09:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:23,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:09:23,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:23,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:09:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:23,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:09:23,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:23,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:09:23,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:23,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:09:23,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:23,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 17:09:23,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:23,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 17:09:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:23,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 17:09:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:23,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 17:09:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:23,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 17:09:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:23,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 17:09:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:23,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 17:09:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:23,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 17:09:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:23,632 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 17:09:23,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:09:23,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792912859] [2022-07-19 17:09:23,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792912859] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:09:23,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:09:23,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 17:09:23,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801076007] [2022-07-19 17:09:23,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:09:23,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 17:09:23,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:09:23,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 17:09:23,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:09:23,634 INFO L87 Difference]: Start difference. First operand 395 states and 597 transitions. Second operand has 9 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-19 17:09:24,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:09:24,955 INFO L93 Difference]: Finished difference Result 882 states and 1335 transitions. [2022-07-19 17:09:24,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 17:09:24,955 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2022-07-19 17:09:24,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:09:24,958 INFO L225 Difference]: With dead ends: 882 [2022-07-19 17:09:24,958 INFO L226 Difference]: Without dead ends: 510 [2022-07-19 17:09:24,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 17:09:24,960 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 1213 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1851 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 2270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 1851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:09:24,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1230 Valid, 1379 Invalid, 2270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 1851 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 17:09:24,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2022-07-19 17:09:24,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 395. [2022-07-19 17:09:24,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 305 states have (on average 1.518032786885246) internal successors, (463), 310 states have internal predecessors, (463), 64 states have call successors, (64), 23 states have call predecessors, (64), 25 states have return successors, (69), 63 states have call predecessors, (69), 63 states have call successors, (69) [2022-07-19 17:09:24,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 596 transitions. [2022-07-19 17:09:24,979 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 596 transitions. Word has length 114 [2022-07-19 17:09:24,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:09:24,980 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 596 transitions. [2022-07-19 17:09:24,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-19 17:09:24,980 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 596 transitions. [2022-07-19 17:09:24,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-19 17:09:24,982 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:09:24,982 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:09:24,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 17:09:24,982 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:09:24,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:09:24,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1533725465, now seen corresponding path program 2 times [2022-07-19 17:09:24,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:09:24,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373279491] [2022-07-19 17:09:24,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:09:24,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:09:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:25,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:09:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:25,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:09:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:25,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:09:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:25,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:09:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:25,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:09:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:25,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:09:25,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:25,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 17:09:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:25,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 17:09:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:25,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 17:09:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:25,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 17:09:25,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:25,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 17:09:25,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:25,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 17:09:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:25,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-19 17:09:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:25,078 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 17:09:25,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:09:25,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373279491] [2022-07-19 17:09:25,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373279491] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:09:25,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:09:25,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 17:09:25,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938205679] [2022-07-19 17:09:25,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:09:25,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 17:09:25,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:09:25,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 17:09:25,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:09:25,080 INFO L87 Difference]: Start difference. First operand 395 states and 596 transitions. Second operand has 9 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-19 17:09:26,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:09:26,450 INFO L93 Difference]: Finished difference Result 884 states and 1338 transitions. [2022-07-19 17:09:26,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 17:09:26,451 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2022-07-19 17:09:26,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:09:26,453 INFO L225 Difference]: With dead ends: 884 [2022-07-19 17:09:26,454 INFO L226 Difference]: Without dead ends: 512 [2022-07-19 17:09:26,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 17:09:26,455 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 1208 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1856 mSolverCounterSat, 424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 2280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 424 IncrementalHoareTripleChecker+Valid, 1856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 17:09:26,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1225 Valid, 1380 Invalid, 2280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [424 Valid, 1856 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 17:09:26,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2022-07-19 17:09:26,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 397. [2022-07-19 17:09:26,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 306 states have (on average 1.5163398692810457) internal successors, (464), 312 states have internal predecessors, (464), 64 states have call successors, (64), 23 states have call predecessors, (64), 26 states have return successors, (71), 63 states have call predecessors, (71), 63 states have call successors, (71) [2022-07-19 17:09:26,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 599 transitions. [2022-07-19 17:09:26,496 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 599 transitions. Word has length 115 [2022-07-19 17:09:26,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:09:26,496 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 599 transitions. [2022-07-19 17:09:26,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-19 17:09:26,497 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 599 transitions. [2022-07-19 17:09:26,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-19 17:09:26,498 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:09:26,498 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:09:26,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 17:09:26,499 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:09:26,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:09:26,499 INFO L85 PathProgramCache]: Analyzing trace with hash -580111292, now seen corresponding path program 1 times [2022-07-19 17:09:26,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:09:26,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429301926] [2022-07-19 17:09:26,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:09:26,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:09:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:26,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:09:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:26,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:09:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:26,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:09:26,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:26,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:09:26,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:26,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:09:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:26,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:09:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:26,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 17:09:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:26,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 17:09:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:26,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 17:09:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:26,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 17:09:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:26,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 17:09:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:26,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 17:09:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:26,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 17:09:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:26,638 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-19 17:09:26,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:09:26,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429301926] [2022-07-19 17:09:26,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429301926] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:09:26,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:09:26,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 17:09:26,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329991708] [2022-07-19 17:09:26,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:09:26,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 17:09:26,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:09:26,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 17:09:26,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-19 17:09:26,641 INFO L87 Difference]: Start difference. First operand 397 states and 599 transitions. Second operand has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-19 17:09:28,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:09:28,242 INFO L93 Difference]: Finished difference Result 882 states and 1333 transitions. [2022-07-19 17:09:28,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:09:28,243 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 116 [2022-07-19 17:09:28,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:09:28,245 INFO L225 Difference]: With dead ends: 882 [2022-07-19 17:09:28,245 INFO L226 Difference]: Without dead ends: 512 [2022-07-19 17:09:28,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-07-19 17:09:28,247 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 1320 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3369 mSolverCounterSat, 476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 3845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 476 IncrementalHoareTripleChecker+Valid, 3369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:09:28,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1320 Valid, 1676 Invalid, 3845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [476 Valid, 3369 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 17:09:28,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2022-07-19 17:09:28,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 397. [2022-07-19 17:09:28,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 306 states have (on average 1.5163398692810457) internal successors, (464), 312 states have internal predecessors, (464), 64 states have call successors, (64), 23 states have call predecessors, (64), 26 states have return successors, (70), 63 states have call predecessors, (70), 63 states have call successors, (70) [2022-07-19 17:09:28,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 598 transitions. [2022-07-19 17:09:28,264 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 598 transitions. Word has length 116 [2022-07-19 17:09:28,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:09:28,264 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 598 transitions. [2022-07-19 17:09:28,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-19 17:09:28,264 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 598 transitions. [2022-07-19 17:09:28,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-19 17:09:28,266 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:09:28,266 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:09:28,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 17:09:28,266 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:09:28,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:09:28,266 INFO L85 PathProgramCache]: Analyzing trace with hash 855846113, now seen corresponding path program 2 times [2022-07-19 17:09:28,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:09:28,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098372035] [2022-07-19 17:09:28,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:09:28,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:09:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:28,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:09:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:28,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:09:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:28,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:09:28,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:28,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:09:28,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:28,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:09:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:28,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:09:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:28,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 17:09:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:28,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 17:09:28,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:28,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 17:09:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:28,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 17:09:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:28,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 17:09:28,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:28,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 17:09:28,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:28,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 17:09:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:28,368 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-19 17:09:28,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:09:28,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098372035] [2022-07-19 17:09:28,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098372035] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:09:28,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:09:28,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 17:09:28,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854905461] [2022-07-19 17:09:28,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:09:28,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 17:09:28,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:09:28,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 17:09:28,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-19 17:09:28,370 INFO L87 Difference]: Start difference. First operand 397 states and 598 transitions. Second operand has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-19 17:09:30,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:09:30,170 INFO L93 Difference]: Finished difference Result 884 states and 1339 transitions. [2022-07-19 17:09:30,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:09:30,184 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 117 [2022-07-19 17:09:30,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:09:30,189 INFO L225 Difference]: With dead ends: 884 [2022-07-19 17:09:30,189 INFO L226 Difference]: Without dead ends: 514 [2022-07-19 17:09:30,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-07-19 17:09:30,193 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 1315 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3403 mSolverCounterSat, 471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 3874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 471 IncrementalHoareTripleChecker+Valid, 3403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:09:30,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 1677 Invalid, 3874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [471 Valid, 3403 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 17:09:30,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-07-19 17:09:30,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 399. [2022-07-19 17:09:30,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 307 states have (on average 1.514657980456026) internal successors, (465), 314 states have internal predecessors, (465), 64 states have call successors, (64), 23 states have call predecessors, (64), 27 states have return successors, (75), 63 states have call predecessors, (75), 63 states have call successors, (75) [2022-07-19 17:09:30,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 604 transitions. [2022-07-19 17:09:30,226 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 604 transitions. Word has length 117 [2022-07-19 17:09:30,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:09:30,227 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 604 transitions. [2022-07-19 17:09:30,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-19 17:09:30,227 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 604 transitions. [2022-07-19 17:09:30,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-19 17:09:30,229 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:09:30,229 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:09:30,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 17:09:30,230 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:09:30,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:09:30,230 INFO L85 PathProgramCache]: Analyzing trace with hash 343942527, now seen corresponding path program 1 times [2022-07-19 17:09:30,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:09:30,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704895758] [2022-07-19 17:09:30,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:09:30,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:09:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:30,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:09:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:30,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:09:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:30,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:09:30,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:30,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:09:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:30,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:09:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:30,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:09:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:30,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 17:09:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:30,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 17:09:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:30,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 17:09:30,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:30,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 17:09:30,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:30,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 17:09:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:30,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 17:09:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:30,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-19 17:09:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:30,349 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-19 17:09:30,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:09:30,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704895758] [2022-07-19 17:09:30,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704895758] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:09:30,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947171783] [2022-07-19 17:09:30,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:09:30,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:09:30,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:09:30,351 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) [2022-07-19 17:09:30,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 17:09:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:30,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 1092 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 17:09:30,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:09:30,584 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:09:30,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 17:09:30,656 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:09:30,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947171783] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 17:09:30,657 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 17:09:30,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2022-07-19 17:09:30,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422192261] [2022-07-19 17:09:30,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 17:09:30,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-19 17:09:30,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:09:30,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-19 17:09:30,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-19 17:09:30,660 INFO L87 Difference]: Start difference. First operand 399 states and 604 transitions. Second operand has 15 states, 14 states have (on average 9.642857142857142) internal successors, (135), 11 states have internal predecessors, (135), 4 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2022-07-19 17:09:33,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:09:33,546 INFO L93 Difference]: Finished difference Result 1563 states and 2567 transitions. [2022-07-19 17:09:33,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 17:09:33,546 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 9.642857142857142) internal successors, (135), 11 states have internal predecessors, (135), 4 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) Word has length 118 [2022-07-19 17:09:33,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:09:33,553 INFO L225 Difference]: With dead ends: 1563 [2022-07-19 17:09:33,553 INFO L226 Difference]: Without dead ends: 1195 [2022-07-19 17:09:33,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2022-07-19 17:09:33,556 INFO L413 NwaCegarLoop]: 771 mSDtfsCounter, 3301 mSDsluCounter, 3134 mSDsCounter, 0 mSdLazyCounter, 4719 mSolverCounterSat, 1326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3303 SdHoareTripleChecker+Valid, 3905 SdHoareTripleChecker+Invalid, 6045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1326 IncrementalHoareTripleChecker+Valid, 4719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-19 17:09:33,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3303 Valid, 3905 Invalid, 6045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1326 Valid, 4719 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-19 17:09:33,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2022-07-19 17:09:33,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 727. [2022-07-19 17:09:33,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 571 states have (on average 1.5691768826619965) internal successors, (896), 578 states have internal predecessors, (896), 128 states have call successors, (128), 23 states have call predecessors, (128), 27 states have return successors, (149), 127 states have call predecessors, (149), 127 states have call successors, (149) [2022-07-19 17:09:33,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1173 transitions. [2022-07-19 17:09:33,606 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1173 transitions. Word has length 118 [2022-07-19 17:09:33,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:09:33,606 INFO L495 AbstractCegarLoop]: Abstraction has 727 states and 1173 transitions. [2022-07-19 17:09:33,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 9.642857142857142) internal successors, (135), 11 states have internal predecessors, (135), 4 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2022-07-19 17:09:33,607 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1173 transitions. [2022-07-19 17:09:33,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-19 17:09:33,609 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:09:33,609 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:09:33,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 17:09:33,823 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 [2022-07-19 17:09:33,825 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:09:33,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:09:33,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1237049440, now seen corresponding path program 1 times [2022-07-19 17:09:33,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:09:33,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643357524] [2022-07-19 17:09:33,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:09:33,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:09:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:33,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:09:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:33,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:09:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:33,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:09:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:33,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:09:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:33,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:09:33,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:33,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:09:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:33,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 17:09:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:33,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 17:09:33,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:33,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 17:09:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:33,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 17:09:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:33,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 17:09:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:33,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 17:09:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:33,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 17:09:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:33,914 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:09:33,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:09:33,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643357524] [2022-07-19 17:09:33,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643357524] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:09:33,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:09:33,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:09:33,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095900616] [2022-07-19 17:09:33,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:09:33,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:09:33,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:09:33,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:09:33,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:09:33,916 INFO L87 Difference]: Start difference. First operand 727 states and 1173 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 17:09:34,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:09:34,949 INFO L93 Difference]: Finished difference Result 1799 states and 2970 transitions. [2022-07-19 17:09:34,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:09:34,949 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 121 [2022-07-19 17:09:34,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:09:34,954 INFO L225 Difference]: With dead ends: 1799 [2022-07-19 17:09:34,954 INFO L226 Difference]: Without dead ends: 1150 [2022-07-19 17:09:34,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:09:34,957 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 1203 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 17:09:34,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1218 Valid, 1272 Invalid, 1419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 17:09:34,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2022-07-19 17:09:35,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1027. [2022-07-19 17:09:35,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 807 states have (on average 1.587360594795539) internal successors, (1281), 814 states have internal predecessors, (1281), 192 states have call successors, (192), 23 states have call predecessors, (192), 27 states have return successors, (223), 191 states have call predecessors, (223), 191 states have call successors, (223) [2022-07-19 17:09:35,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1696 transitions. [2022-07-19 17:09:35,010 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1696 transitions. Word has length 121 [2022-07-19 17:09:35,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:09:35,010 INFO L495 AbstractCegarLoop]: Abstraction has 1027 states and 1696 transitions. [2022-07-19 17:09:35,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 17:09:35,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1696 transitions. [2022-07-19 17:09:35,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-19 17:09:35,015 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:09:35,015 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:09:35,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 17:09:35,015 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:09:35,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:09:35,015 INFO L85 PathProgramCache]: Analyzing trace with hash -868759813, now seen corresponding path program 1 times [2022-07-19 17:09:35,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:09:35,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778479906] [2022-07-19 17:09:35,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:09:35,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:09:35,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:35,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:09:35,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:35,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:09:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:35,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:09:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:35,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:09:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:35,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:09:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:35,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:09:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:35,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 17:09:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:35,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 17:09:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:35,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 17:09:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:35,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 17:09:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:35,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 17:09:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:35,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-19 17:09:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:35,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 17:09:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:35,082 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:09:35,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:09:35,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778479906] [2022-07-19 17:09:35,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778479906] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:09:35,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:09:35,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:09:35,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332476761] [2022-07-19 17:09:35,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:09:35,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:09:35,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:09:35,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:09:35,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:09:35,084 INFO L87 Difference]: Start difference. First operand 1027 states and 1696 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 17:09:36,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:09:36,049 INFO L93 Difference]: Finished difference Result 2539 states and 4250 transitions. [2022-07-19 17:09:36,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:09:36,050 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2022-07-19 17:09:36,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:09:36,056 INFO L225 Difference]: With dead ends: 2539 [2022-07-19 17:09:36,057 INFO L226 Difference]: Without dead ends: 1643 [2022-07-19 17:09:36,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:09:36,060 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 1201 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1216 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:09:36,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1216 Valid, 1247 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 17:09:36,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2022-07-19 17:09:36,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 1520. [2022-07-19 17:09:36,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 1205 states have (on average 1.595850622406639) internal successors, (1923), 1212 states have internal predecessors, (1923), 287 states have call successors, (287), 23 states have call predecessors, (287), 27 states have return successors, (318), 286 states have call predecessors, (318), 286 states have call successors, (318) [2022-07-19 17:09:36,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 2528 transitions. [2022-07-19 17:09:36,135 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 2528 transitions. Word has length 122 [2022-07-19 17:09:36,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:09:36,135 INFO L495 AbstractCegarLoop]: Abstraction has 1520 states and 2528 transitions. [2022-07-19 17:09:36,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 17:09:36,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 2528 transitions. [2022-07-19 17:09:36,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-19 17:09:36,141 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:09:36,141 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:09:36,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 17:09:36,142 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:09:36,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:09:36,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1417441102, now seen corresponding path program 1 times [2022-07-19 17:09:36,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:09:36,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138185324] [2022-07-19 17:09:36,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:09:36,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:09:36,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:36,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:09:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:36,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:09:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:36,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:09:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:36,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:09:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:36,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:09:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:36,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:09:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:36,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 17:09:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:36,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 17:09:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:36,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 17:09:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:36,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 17:09:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:36,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 17:09:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:36,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 17:09:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:36,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-19 17:09:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:36,204 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:09:36,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:09:36,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138185324] [2022-07-19 17:09:36,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138185324] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:09:36,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:09:36,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:09:36,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782134261] [2022-07-19 17:09:36,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:09:36,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:09:36,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:09:36,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:09:36,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:09:36,206 INFO L87 Difference]: Start difference. First operand 1520 states and 2528 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 17:09:37,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:09:37,203 INFO L93 Difference]: Finished difference Result 3641 states and 6168 transitions. [2022-07-19 17:09:37,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:09:37,203 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2022-07-19 17:09:37,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:09:37,213 INFO L225 Difference]: With dead ends: 3641 [2022-07-19 17:09:37,213 INFO L226 Difference]: Without dead ends: 2387 [2022-07-19 17:09:37,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:09:37,217 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 1199 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:09:37,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1214 Valid, 1220 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 17:09:37,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2387 states. [2022-07-19 17:09:37,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2387 to 2264. [2022-07-19 17:09:37,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2264 states, 1826 states have (on average 1.6024096385542168) internal successors, (2926), 1833 states have internal predecessors, (2926), 410 states have call successors, (410), 23 states have call predecessors, (410), 27 states have return successors, (457), 409 states have call predecessors, (457), 409 states have call successors, (457) [2022-07-19 17:09:37,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2264 states to 2264 states and 3793 transitions. [2022-07-19 17:09:37,371 INFO L78 Accepts]: Start accepts. Automaton has 2264 states and 3793 transitions. Word has length 123 [2022-07-19 17:09:37,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:09:37,371 INFO L495 AbstractCegarLoop]: Abstraction has 2264 states and 3793 transitions. [2022-07-19 17:09:37,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 17:09:37,372 INFO L276 IsEmpty]: Start isEmpty. Operand 2264 states and 3793 transitions. [2022-07-19 17:09:37,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 17:09:37,378 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:09:37,378 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:09:37,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 17:09:37,378 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:09:37,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:09:37,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1143698300, now seen corresponding path program 1 times [2022-07-19 17:09:37,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:09:37,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492110273] [2022-07-19 17:09:37,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:09:37,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:09:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:37,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:09:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:37,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:09:37,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:37,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:09:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:37,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:09:37,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:37,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:09:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:37,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:09:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:37,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 17:09:37,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:37,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 17:09:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:37,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 17:09:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:37,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 17:09:37,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:37,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 17:09:37,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:37,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 17:09:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:37,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-19 17:09:37,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:37,503 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:09:37,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:09:37,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492110273] [2022-07-19 17:09:37,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492110273] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:09:37,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:09:37,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:09:37,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157602541] [2022-07-19 17:09:37,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:09:37,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:09:37,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:09:37,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:09:37,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:09:37,505 INFO L87 Difference]: Start difference. First operand 2264 states and 3793 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 17:09:38,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:09:38,525 INFO L93 Difference]: Finished difference Result 5350 states and 9148 transitions. [2022-07-19 17:09:38,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:09:38,526 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2022-07-19 17:09:38,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:09:38,539 INFO L225 Difference]: With dead ends: 5350 [2022-07-19 17:09:38,540 INFO L226 Difference]: Without dead ends: 3571 [2022-07-19 17:09:38,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:09:38,545 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 1197 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 460 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 460 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:09:38,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1212 Valid, 1218 Invalid, 1388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [460 Valid, 928 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 17:09:38,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3571 states. [2022-07-19 17:09:38,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3571 to 3448. [2022-07-19 17:09:38,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3448 states, 2831 states have (on average 1.6064994701518898) internal successors, (4548), 2838 states have internal predecessors, (4548), 589 states have call successors, (589), 23 states have call predecessors, (589), 27 states have return successors, (662), 588 states have call predecessors, (662), 588 states have call successors, (662) [2022-07-19 17:09:38,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3448 states to 3448 states and 5799 transitions. [2022-07-19 17:09:38,736 INFO L78 Accepts]: Start accepts. Automaton has 3448 states and 5799 transitions. Word has length 124 [2022-07-19 17:09:38,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:09:38,737 INFO L495 AbstractCegarLoop]: Abstraction has 3448 states and 5799 transitions. [2022-07-19 17:09:38,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 17:09:38,737 INFO L276 IsEmpty]: Start isEmpty. Operand 3448 states and 5799 transitions. [2022-07-19 17:09:38,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-19 17:09:38,746 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:09:38,746 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:09:38,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 17:09:38,746 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:09:38,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:09:38,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1106271446, now seen corresponding path program 1 times [2022-07-19 17:09:38,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:09:38,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352021077] [2022-07-19 17:09:38,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:09:38,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:09:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:38,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:09:38,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:38,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:09:38,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:38,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:09:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:38,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:09:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:38,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:09:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:38,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:09:38,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:38,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 17:09:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:38,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 17:09:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:38,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 17:09:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:38,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 17:09:38,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:38,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 17:09:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:38,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-19 17:09:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:38,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 17:09:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:38,812 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:09:38,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:09:38,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352021077] [2022-07-19 17:09:38,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352021077] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:09:38,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:09:38,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:09:38,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407452128] [2022-07-19 17:09:38,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:09:38,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:09:38,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:09:38,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:09:38,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:09:38,814 INFO L87 Difference]: Start difference. First operand 3448 states and 5799 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 17:09:39,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:09:39,964 INFO L93 Difference]: Finished difference Result 8423 states and 14464 transitions. [2022-07-19 17:09:39,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:09:39,966 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2022-07-19 17:09:39,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:09:39,990 INFO L225 Difference]: With dead ends: 8423 [2022-07-19 17:09:39,990 INFO L226 Difference]: Without dead ends: 5712 [2022-07-19 17:09:39,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:09:39,999 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 1195 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1210 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:09:39,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1210 Valid, 1251 Invalid, 1415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [465 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 17:09:40,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5712 states. [2022-07-19 17:09:40,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5712 to 5589. [2022-07-19 17:09:40,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5589 states, 4596 states have (on average 1.6000870322019147) internal successors, (7354), 4603 states have internal predecessors, (7354), 965 states have call successors, (965), 23 states have call predecessors, (965), 27 states have return successors, (1082), 964 states have call predecessors, (1082), 964 states have call successors, (1082) [2022-07-19 17:09:40,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5589 states to 5589 states and 9401 transitions. [2022-07-19 17:09:40,316 INFO L78 Accepts]: Start accepts. Automaton has 5589 states and 9401 transitions. Word has length 125 [2022-07-19 17:09:40,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:09:40,317 INFO L495 AbstractCegarLoop]: Abstraction has 5589 states and 9401 transitions. [2022-07-19 17:09:40,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 17:09:40,317 INFO L276 IsEmpty]: Start isEmpty. Operand 5589 states and 9401 transitions. [2022-07-19 17:09:40,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-19 17:09:40,330 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:09:40,331 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:09:40,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 17:09:40,331 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:09:40,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:09:40,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1528989600, now seen corresponding path program 1 times [2022-07-19 17:09:40,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:09:40,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945124762] [2022-07-19 17:09:40,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:09:40,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:09:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:40,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:09:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:40,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:09:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:40,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:09:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:40,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:09:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:40,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:09:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:40,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:09:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:40,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 17:09:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:40,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 17:09:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:40,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 17:09:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:40,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 17:09:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:40,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 17:09:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:40,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 17:09:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:40,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-19 17:09:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:40,403 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:09:40,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:09:40,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945124762] [2022-07-19 17:09:40,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945124762] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:09:40,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:09:40,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:09:40,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406381499] [2022-07-19 17:09:40,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:09:40,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:09:40,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:09:40,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:09:40,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:09:40,405 INFO L87 Difference]: Start difference. First operand 5589 states and 9401 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 17:09:41,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:09:41,667 INFO L93 Difference]: Finished difference Result 13845 states and 23765 transitions. [2022-07-19 17:09:41,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:09:41,668 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 126 [2022-07-19 17:09:41,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:09:41,705 INFO L225 Difference]: With dead ends: 13845 [2022-07-19 17:09:41,706 INFO L226 Difference]: Without dead ends: 9395 [2022-07-19 17:09:41,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:09:41,719 INFO L413 NwaCegarLoop]: 594 mSDtfsCounter, 1193 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1208 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:09:41,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1208 Valid, 1226 Invalid, 1406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 17:09:41,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9395 states. [2022-07-19 17:09:42,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9395 to 9272. [2022-07-19 17:09:42,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9272 states, 7673 states have (on average 1.5979408314870325) internal successors, (12261), 7680 states have internal predecessors, (12261), 1571 states have call successors, (1571), 23 states have call predecessors, (1571), 27 states have return successors, (1766), 1570 states have call predecessors, (1766), 1570 states have call successors, (1766) [2022-07-19 17:09:42,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9272 states to 9272 states and 15598 transitions. [2022-07-19 17:09:42,239 INFO L78 Accepts]: Start accepts. Automaton has 9272 states and 15598 transitions. Word has length 126 [2022-07-19 17:09:42,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:09:42,239 INFO L495 AbstractCegarLoop]: Abstraction has 9272 states and 15598 transitions. [2022-07-19 17:09:42,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 17:09:42,240 INFO L276 IsEmpty]: Start isEmpty. Operand 9272 states and 15598 transitions. [2022-07-19 17:09:42,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-19 17:09:42,257 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:09:42,257 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:09:42,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 17:09:42,257 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:09:42,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:09:42,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1067818956, now seen corresponding path program 1 times [2022-07-19 17:09:42,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:09:42,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100324505] [2022-07-19 17:09:42,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:09:42,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:09:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:42,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:09:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:42,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:09:42,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:42,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:09:42,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:42,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:09:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:42,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:09:42,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:42,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:09:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:42,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 17:09:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:42,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 17:09:42,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:42,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 17:09:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:42,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 17:09:42,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:42,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 17:09:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:42,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 17:09:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:42,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 17:09:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:42,333 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:09:42,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:09:42,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100324505] [2022-07-19 17:09:42,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100324505] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:09:42,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:09:42,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:09:42,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085451821] [2022-07-19 17:09:42,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:09:42,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:09:42,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:09:42,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:09:42,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:09:42,335 INFO L87 Difference]: Start difference. First operand 9272 states and 15598 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 17:09:43,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:09:43,827 INFO L93 Difference]: Finished difference Result 24029 states and 41206 transitions. [2022-07-19 17:09:43,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:09:43,828 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2022-07-19 17:09:43,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:09:43,884 INFO L225 Difference]: With dead ends: 24029 [2022-07-19 17:09:43,884 INFO L226 Difference]: Without dead ends: 16348 [2022-07-19 17:09:43,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:09:43,909 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 1191 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 17:09:43,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1206 Valid, 1257 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [477 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 17:09:43,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16348 states. [2022-07-19 17:09:44,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16348 to 16225. [2022-07-19 17:09:44,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16225 states, 13423 states have (on average 1.5891380466363705) internal successors, (21331), 13430 states have internal predecessors, (21331), 2774 states have call successors, (2774), 23 states have call predecessors, (2774), 27 states have return successors, (3113), 2773 states have call predecessors, (3113), 2773 states have call successors, (3113) [2022-07-19 17:09:44,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16225 states to 16225 states and 27218 transitions. [2022-07-19 17:09:44,809 INFO L78 Accepts]: Start accepts. Automaton has 16225 states and 27218 transitions. Word has length 127 [2022-07-19 17:09:44,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:09:44,809 INFO L495 AbstractCegarLoop]: Abstraction has 16225 states and 27218 transitions. [2022-07-19 17:09:44,809 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 17:09:44,810 INFO L276 IsEmpty]: Start isEmpty. Operand 16225 states and 27218 transitions. [2022-07-19 17:09:44,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-19 17:09:44,833 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:09:44,833 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:09:44,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 17:09:44,833 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:09:44,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:09:44,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1090807745, now seen corresponding path program 1 times [2022-07-19 17:09:44,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:09:44,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687564003] [2022-07-19 17:09:44,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:09:44,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:09:44,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:44,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:09:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:44,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:09:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:44,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:09:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:44,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:09:44,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:44,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:09:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:44,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:09:44,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:44,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 17:09:44,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:44,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 17:09:44,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:44,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 17:09:44,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:44,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 17:09:44,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:44,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 17:09:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:44,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 17:09:44,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:44,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 17:09:44,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:44,908 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:09:44,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:09:44,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687564003] [2022-07-19 17:09:44,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687564003] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:09:44,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:09:44,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:09:44,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213024445] [2022-07-19 17:09:44,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:09:44,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:09:44,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:09:44,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:09:44,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:09:44,912 INFO L87 Difference]: Start difference. First operand 16225 states and 27218 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 17:09:47,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:09:47,074 INFO L93 Difference]: Finished difference Result 42995 states and 73603 transitions. [2022-07-19 17:09:47,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:09:47,075 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2022-07-19 17:09:47,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:09:47,184 INFO L225 Difference]: With dead ends: 42995 [2022-07-19 17:09:47,184 INFO L226 Difference]: Without dead ends: 29003 [2022-07-19 17:09:47,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:09:47,222 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 1189 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1204 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 1418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 17:09:47,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1204 Valid, 1223 Invalid, 1418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 17:09:47,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29003 states. [2022-07-19 17:09:48,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29003 to 28880. [2022-07-19 17:09:48,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28880 states, 24039 states have (on average 1.58484129955489) internal successors, (38098), 24046 states have internal predecessors, (38098), 4813 states have call successors, (4813), 23 states have call predecessors, (4813), 27 states have return successors, (5426), 4812 states have call predecessors, (5426), 4812 states have call successors, (5426) [2022-07-19 17:09:48,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28880 states to 28880 states and 48337 transitions. [2022-07-19 17:09:48,814 INFO L78 Accepts]: Start accepts. Automaton has 28880 states and 48337 transitions. Word has length 128 [2022-07-19 17:09:48,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:09:48,814 INFO L495 AbstractCegarLoop]: Abstraction has 28880 states and 48337 transitions. [2022-07-19 17:09:48,814 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 17:09:48,814 INFO L276 IsEmpty]: Start isEmpty. Operand 28880 states and 48337 transitions. [2022-07-19 17:09:48,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-19 17:09:48,839 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:09:48,839 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:09:48,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 17:09:48,840 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:09:48,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:09:48,840 INFO L85 PathProgramCache]: Analyzing trace with hash 345906382, now seen corresponding path program 1 times [2022-07-19 17:09:48,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:09:48,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377472790] [2022-07-19 17:09:48,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:09:48,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:09:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:48,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:09:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:48,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:09:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:48,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:09:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:48,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:09:48,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:48,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:09:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:48,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:09:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:48,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 17:09:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:48,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 17:09:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:48,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 17:09:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:48,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 17:09:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:48,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 17:09:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:48,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 17:09:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:48,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-19 17:09:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:48,918 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:09:48,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:09:48,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377472790] [2022-07-19 17:09:48,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377472790] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:09:48,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:09:48,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:09:48,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216096885] [2022-07-19 17:09:48,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:09:48,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:09:48,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:09:48,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:09:48,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:09:48,921 INFO L87 Difference]: Start difference. First operand 28880 states and 48337 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 17:09:51,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:09:51,995 INFO L93 Difference]: Finished difference Result 78757 states and 133967 transitions. [2022-07-19 17:09:51,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:09:51,996 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2022-07-19 17:09:51,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:09:52,193 INFO L225 Difference]: With dead ends: 78757 [2022-07-19 17:09:52,194 INFO L226 Difference]: Without dead ends: 52882 [2022-07-19 17:09:52,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:09:52,271 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 1187 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1202 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:09:52,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1202 Valid, 1258 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 17:09:52,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52882 states. [2022-07-19 17:09:54,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52882 to 52759. [2022-07-19 17:09:54,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52759 states, 44203 states have (on average 1.579100965997783) internal successors, (69801), 44210 states have internal predecessors, (69801), 8528 states have call successors, (8528), 23 states have call predecessors, (8528), 27 states have return successors, (9673), 8527 states have call predecessors, (9673), 8527 states have call successors, (9673) [2022-07-19 17:09:55,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52759 states to 52759 states and 88002 transitions. [2022-07-19 17:09:55,086 INFO L78 Accepts]: Start accepts. Automaton has 52759 states and 88002 transitions. Word has length 129 [2022-07-19 17:09:55,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:09:55,087 INFO L495 AbstractCegarLoop]: Abstraction has 52759 states and 88002 transitions. [2022-07-19 17:09:55,087 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 17:09:55,087 INFO L276 IsEmpty]: Start isEmpty. Operand 52759 states and 88002 transitions. [2022-07-19 17:09:55,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-19 17:09:55,115 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:09:55,115 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:09:55,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 17:09:55,115 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:09:55,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:09:55,116 INFO L85 PathProgramCache]: Analyzing trace with hash -187926591, now seen corresponding path program 1 times [2022-07-19 17:09:55,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:09:55,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435058400] [2022-07-19 17:09:55,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:09:55,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:09:55,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:55,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:09:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:55,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:09:55,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:55,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:09:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:55,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:09:55,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:55,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:09:55,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:55,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:09:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:55,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 17:09:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:55,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 17:09:55,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:55,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 17:09:55,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:55,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 17:09:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:55,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 17:09:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:55,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-19 17:09:55,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:55,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 17:09:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:09:55,182 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:09:55,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:09:55,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435058400] [2022-07-19 17:09:55,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435058400] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:09:55,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:09:55,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:09:55,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093016580] [2022-07-19 17:09:55,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:09:55,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:09:55,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:09:55,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:09:55,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:09:55,185 INFO L87 Difference]: Start difference. First operand 52759 states and 88002 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 17:10:00,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:10:00,047 INFO L93 Difference]: Finished difference Result 98528 states and 167897 transitions. [2022-07-19 17:10:00,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:10:00,048 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 130 [2022-07-19 17:10:00,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:10:00,382 INFO L225 Difference]: With dead ends: 98528 [2022-07-19 17:10:00,382 INFO L226 Difference]: Without dead ends: 98341 [2022-07-19 17:10:00,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:10:00,423 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 1185 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:10:00,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1200 Valid, 1221 Invalid, 1406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 17:10:00,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98341 states. [2022-07-19 17:10:05,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98341 to 98218. [2022-07-19 17:10:05,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98218 states, 82863 states have (on average 1.5718475073313782) internal successors, (130248), 82870 states have internal predecessors, (130248), 15327 states have call successors, (15327), 23 states have call predecessors, (15327), 27 states have return successors, (17518), 15326 states have call predecessors, (17518), 15326 states have call successors, (17518) [2022-07-19 17:10:05,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98218 states to 98218 states and 163093 transitions. [2022-07-19 17:10:05,724 INFO L78 Accepts]: Start accepts. Automaton has 98218 states and 163093 transitions. Word has length 130 [2022-07-19 17:10:05,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:10:05,725 INFO L495 AbstractCegarLoop]: Abstraction has 98218 states and 163093 transitions. [2022-07-19 17:10:05,725 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 17:10:05,725 INFO L276 IsEmpty]: Start isEmpty. Operand 98218 states and 163093 transitions. [2022-07-19 17:10:05,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-19 17:10:05,754 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:10:05,754 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:10:05,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 17:10:05,754 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:10:05,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:10:05,755 INFO L85 PathProgramCache]: Analyzing trace with hash 717524013, now seen corresponding path program 1 times [2022-07-19 17:10:05,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:10:05,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264035833] [2022-07-19 17:10:05,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:10:05,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:10:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:10:05,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:10:05,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:10:05,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:10:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:10:05,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:10:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:10:05,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:10:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:10:05,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:10:05,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:10:05,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:10:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:10:05,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 17:10:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:10:05,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 17:10:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:10:05,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 17:10:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:10:05,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 17:10:05,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:10:05,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 17:10:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:10:05,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-19 17:10:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:10:05,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 17:10:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:10:05,901 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 17:10:05,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:10:05,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264035833] [2022-07-19 17:10:05,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264035833] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:10:05,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:10:05,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 17:10:05,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703084130] [2022-07-19 17:10:05,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:10:05,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 17:10:05,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:10:05,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 17:10:05,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2022-07-19 17:10:05,904 INFO L87 Difference]: Start difference. First operand 98218 states and 163093 transitions. Second operand has 18 states, 16 states have (on average 5.625) internal successors, (90), 12 states have internal predecessors, (90), 6 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-19 17:10:18,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:10:18,774 INFO L93 Difference]: Finished difference Result 196352 states and 337905 transitions. [2022-07-19 17:10:18,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-19 17:10:18,774 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.625) internal successors, (90), 12 states have internal predecessors, (90), 6 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 131 [2022-07-19 17:10:18,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:10:19,851 INFO L225 Difference]: With dead ends: 196352 [2022-07-19 17:10:19,851 INFO L226 Difference]: Without dead ends: 196171 [2022-07-19 17:10:19,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1281 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=872, Invalid=3820, Unknown=0, NotChecked=0, Total=4692 [2022-07-19 17:10:19,941 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 4479 mSDsluCounter, 2777 mSDsCounter, 0 mSdLazyCounter, 9244 mSolverCounterSat, 2156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4479 SdHoareTripleChecker+Valid, 3467 SdHoareTripleChecker+Invalid, 11400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2156 IncrementalHoareTripleChecker+Valid, 9244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-19 17:10:19,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4479 Valid, 3467 Invalid, 11400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2156 Valid, 9244 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-07-19 17:10:20,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196171 states. [2022-07-19 17:10:30,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196171 to 195715. [2022-07-19 17:10:30,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195715 states, 165171 states have (on average 1.5725944627083446) internal successors, (259747), 165078 states have internal predecessors, (259747), 30471 states have call successors, (30471), 62 states have call predecessors, (30471), 72 states have return successors, (38133), 30582 states have call predecessors, (38133), 30468 states have call successors, (38133)