./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec9_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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_spec9_product22.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 0fc665e3899dd29ca5bf696fac98a46e2d1733c214ee43bc57c8fd7a101d2539 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 04:57:44,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 04:57:44,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 04:57:44,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 04:57:44,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 04:57:44,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 04:57:44,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 04:57:44,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 04:57:44,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 04:57:44,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 04:57:44,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 04:57:44,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 04:57:44,914 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 04:57:44,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 04:57:44,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 04:57:44,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 04:57:44,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 04:57:44,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 04:57:44,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 04:57:44,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 04:57:44,931 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 04:57:44,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 04:57:44,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 04:57:44,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 04:57:44,936 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 04:57:44,938 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 04:57:44,939 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 04:57:44,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 04:57:44,940 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 04:57:44,941 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 04:57:44,942 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 04:57:44,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 04:57:44,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 04:57:44,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 04:57:44,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 04:57:44,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 04:57:44,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 04:57:44,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 04:57:44,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 04:57:44,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 04:57:44,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 04:57:44,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 04:57:44,953 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 04:57:44,984 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 04:57:44,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 04:57:44,985 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 04:57:44,985 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 04:57:44,986 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 04:57:44,986 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 04:57:44,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 04:57:44,987 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 04:57:44,987 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 04:57:44,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 04:57:44,988 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 04:57:44,988 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 04:57:44,988 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 04:57:44,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 04:57:44,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 04:57:44,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 04:57:44,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 04:57:44,989 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 04:57:44,989 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 04:57:44,990 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 04:57:44,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 04:57:44,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 04:57:44,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 04:57:44,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 04:57:44,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 04:57:44,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 04:57:44,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 04:57:44,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 04:57:44,991 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 04:57:44,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 04:57:44,992 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 04:57:44,992 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 04:57:44,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 04:57:44,992 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0fc665e3899dd29ca5bf696fac98a46e2d1733c214ee43bc57c8fd7a101d2539 [2022-07-21 04:57:45,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 04:57:45,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 04:57:45,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 04:57:45,326 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 04:57:45,327 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 04:57:45,328 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec9_product22.cil.c [2022-07-21 04:57:45,386 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37f7c50ca/ab18c916e4ca4b70abaef38511931930/FLAG3a80034bb [2022-07-21 04:57:45,899 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 04:57:45,900 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec9_product22.cil.c [2022-07-21 04:57:45,918 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37f7c50ca/ab18c916e4ca4b70abaef38511931930/FLAG3a80034bb [2022-07-21 04:57:46,191 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37f7c50ca/ab18c916e4ca4b70abaef38511931930 [2022-07-21 04:57:46,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 04:57:46,195 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 04:57:46,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 04:57:46,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 04:57:46,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 04:57:46,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:57:46" (1/1) ... [2022-07-21 04:57:46,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@413a854c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:57:46, skipping insertion in model container [2022-07-21 04:57:46,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:57:46" (1/1) ... [2022-07-21 04:57:46,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 04:57:46,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 04:57:46,753 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_spec9_product22.cil.c[51984,51997] [2022-07-21 04:57:46,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 04:57:46,839 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 04:57:46,905 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_spec9_product22.cil.c[51984,51997] [2022-07-21 04:57:46,934 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 04:57:46,968 INFO L208 MainTranslator]: Completed translation [2022-07-21 04:57:46,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:57:46 WrapperNode [2022-07-21 04:57:46,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 04:57:46,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 04:57:46,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 04:57:46,970 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 04:57:46,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:57:46" (1/1) ... [2022-07-21 04:57:47,012 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:57:46" (1/1) ... [2022-07-21 04:57:47,084 INFO L137 Inliner]: procedures = 129, calls = 211, calls flagged for inlining = 60, calls inlined = 55, statements flattened = 1031 [2022-07-21 04:57:47,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 04:57:47,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 04:57:47,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 04:57:47,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 04:57:47,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:57:46" (1/1) ... [2022-07-21 04:57:47,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:57:46" (1/1) ... [2022-07-21 04:57:47,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:57:46" (1/1) ... [2022-07-21 04:57:47,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:57:46" (1/1) ... [2022-07-21 04:57:47,139 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:57:46" (1/1) ... [2022-07-21 04:57:47,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:57:46" (1/1) ... [2022-07-21 04:57:47,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:57:46" (1/1) ... [2022-07-21 04:57:47,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 04:57:47,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 04:57:47,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 04:57:47,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 04:57:47,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:57:46" (1/1) ... [2022-07-21 04:57:47,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 04:57:47,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:57:47,213 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) [2022-07-21 04:57:47,233 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 [2022-07-21 04:57:47,250 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-07-21 04:57:47,250 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-07-21 04:57:47,251 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-07-21 04:57:47,251 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-07-21 04:57:47,274 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-07-21 04:57:47,274 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-07-21 04:57:47,274 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-07-21 04:57:47,274 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-07-21 04:57:47,274 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-07-21 04:57:47,275 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-07-21 04:57:47,275 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-07-21 04:57:47,275 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-07-21 04:57:47,275 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-07-21 04:57:47,275 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-07-21 04:57:47,275 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-07-21 04:57:47,276 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-07-21 04:57:47,276 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-07-21 04:57:47,276 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-07-21 04:57:47,276 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-07-21 04:57:47,276 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-07-21 04:57:47,276 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-07-21 04:57:47,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 04:57:47,277 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-07-21 04:57:47,277 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-07-21 04:57:47,277 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-07-21 04:57:47,277 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-07-21 04:57:47,278 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-07-21 04:57:47,278 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-07-21 04:57:47,278 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-07-21 04:57:47,278 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-07-21 04:57:47,278 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-07-21 04:57:47,278 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-07-21 04:57:47,279 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-07-21 04:57:47,279 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-07-21 04:57:47,279 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-07-21 04:57:47,279 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-07-21 04:57:47,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 04:57:47,280 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-07-21 04:57:47,280 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-07-21 04:57:47,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 04:57:47,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 04:57:47,510 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 04:57:47,512 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 04:57:48,203 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 04:57:48,212 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 04:57:48,212 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 04:57:48,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:57:48 BoogieIcfgContainer [2022-07-21 04:57:48,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 04:57:48,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 04:57:48,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 04:57:48,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 04:57:48,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:57:46" (1/3) ... [2022-07-21 04:57:48,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9aa0c17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:57:48, skipping insertion in model container [2022-07-21 04:57:48,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:57:46" (2/3) ... [2022-07-21 04:57:48,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9aa0c17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:57:48, skipping insertion in model container [2022-07-21 04:57:48,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:57:48" (3/3) ... [2022-07-21 04:57:48,223 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec9_product22.cil.c [2022-07-21 04:57:48,236 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 04:57:48,236 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 04:57:48,288 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 04:57:48,295 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@5685bc5d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@41f9266a [2022-07-21 04:57:48,296 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 04:57:48,301 INFO L276 IsEmpty]: Start isEmpty. Operand has 322 states, 252 states have (on average 1.5277777777777777) internal successors, (385), 256 states have internal predecessors, (385), 50 states have call successors, (50), 18 states have call predecessors, (50), 18 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-07-21 04:57:48,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-21 04:57:48,318 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:57:48,319 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] [2022-07-21 04:57:48,319 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:57:48,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:57:48,324 INFO L85 PathProgramCache]: Analyzing trace with hash -113168014, now seen corresponding path program 1 times [2022-07-21 04:57:48,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:57:48,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170499190] [2022-07-21 04:57:48,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:57:48,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:57:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:48,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:57:48,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:48,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:57:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:48,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:57:48,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:48,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 04:57:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:48,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 04:57:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:48,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 04:57:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:48,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 04:57:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:48,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 04:57:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:48,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:57:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:48,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 04:57:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:48,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 04:57:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:48,851 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-21 04:57:48,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:57:48,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170499190] [2022-07-21 04:57:48,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170499190] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:57:48,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925163596] [2022-07-21 04:57:48,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:57:48,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:57:48,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:57:48,856 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) [2022-07-21 04:57:48,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 04:57:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:49,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 962 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 04:57:49,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:57:49,258 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 04:57:49,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:57:49,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925163596] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:57:49,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:57:49,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-07-21 04:57:49,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546034691] [2022-07-21 04:57:49,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:57:49,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 04:57:49,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:57:49,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 04:57:49,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:57:49,320 INFO L87 Difference]: Start difference. First operand has 322 states, 252 states have (on average 1.5277777777777777) internal successors, (385), 256 states have internal predecessors, (385), 50 states have call successors, (50), 18 states have call predecessors, (50), 18 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 04:57:49,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:57:49,378 INFO L93 Difference]: Finished difference Result 485 states and 716 transitions. [2022-07-21 04:57:49,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 04:57:49,381 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 89 [2022-07-21 04:57:49,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:57:49,394 INFO L225 Difference]: With dead ends: 485 [2022-07-21 04:57:49,394 INFO L226 Difference]: Without dead ends: 315 [2022-07-21 04:57:49,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:57:49,403 INFO L413 NwaCegarLoop]: 481 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, 481 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 [2022-07-21 04:57:49,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:57:49,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-07-21 04:57:49,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2022-07-21 04:57:49,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 246 states have (on average 1.5203252032520325) internal successors, (374), 249 states have internal predecessors, (374), 50 states have call successors, (50), 18 states have call predecessors, (50), 18 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-07-21 04:57:49,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 473 transitions. [2022-07-21 04:57:49,485 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 473 transitions. Word has length 89 [2022-07-21 04:57:49,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:57:49,488 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 473 transitions. [2022-07-21 04:57:49,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 04:57:49,489 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 473 transitions. [2022-07-21 04:57:49,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-21 04:57:49,499 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:57:49,500 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] [2022-07-21 04:57:49,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-21 04:57:49,723 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 [2022-07-21 04:57:49,724 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:57:49,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:57:49,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1652077357, now seen corresponding path program 1 times [2022-07-21 04:57:49,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:57:49,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904225810] [2022-07-21 04:57:49,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:57:49,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:57:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:49,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:57:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:49,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:57:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:49,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:57:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:49,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 04:57:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:49,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 04:57:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:49,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 04:57:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:49,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 04:57:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:49,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:57:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:49,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:57:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:49,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 04:57:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:49,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 04:57:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:49,960 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-21 04:57:49,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:57:49,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904225810] [2022-07-21 04:57:49,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904225810] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:57:49,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341143820] [2022-07-21 04:57:49,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:57:49,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:57:49,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:57:49,968 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) [2022-07-21 04:57:49,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 04:57:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:50,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 04:57:50,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:57:50,304 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 04:57:50,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:57:50,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341143820] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:57:50,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:57:50,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-21 04:57:50,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572700098] [2022-07-21 04:57:50,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:57:50,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 04:57:50,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:57:50,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 04:57:50,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:57:50,314 INFO L87 Difference]: Start difference. First operand 315 states and 473 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 04:57:50,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:57:50,408 INFO L93 Difference]: Finished difference Result 475 states and 697 transitions. [2022-07-21 04:57:50,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 04:57:50,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 90 [2022-07-21 04:57:50,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:57:50,416 INFO L225 Difference]: With dead ends: 475 [2022-07-21 04:57:50,417 INFO L226 Difference]: Without dead ends: 318 [2022-07-21 04:57:50,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:57:50,420 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 1 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 940 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 [2022-07-21 04:57:50,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 940 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:57:50,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-07-21 04:57:50,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 317. [2022-07-21 04:57:50,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 248 states have (on average 1.5161290322580645) internal successors, (376), 251 states have internal predecessors, (376), 50 states have call successors, (50), 18 states have call predecessors, (50), 18 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-07-21 04:57:50,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 475 transitions. [2022-07-21 04:57:50,444 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 475 transitions. Word has length 90 [2022-07-21 04:57:50,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:57:50,444 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 475 transitions. [2022-07-21 04:57:50,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 04:57:50,445 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 475 transitions. [2022-07-21 04:57:50,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-21 04:57:50,447 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:57:50,448 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] [2022-07-21 04:57:50,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 04:57:50,661 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 [2022-07-21 04:57:50,661 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:57:50,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:57:50,662 INFO L85 PathProgramCache]: Analyzing trace with hash 551248029, now seen corresponding path program 1 times [2022-07-21 04:57:50,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:57:50,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253679845] [2022-07-21 04:57:50,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:57:50,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:57:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:50,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:57:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:50,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:57:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:50,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:57:50,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:50,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 04:57:50,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:50,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 04:57:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:50,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 04:57:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:50,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 04:57:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:50,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:57:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:50,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 04:57:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:50,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 04:57:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:50,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 04:57:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:50,837 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 04:57:50,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:57:50,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253679845] [2022-07-21 04:57:50,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253679845] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:57:50,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029666544] [2022-07-21 04:57:50,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:57:50,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:57:50,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:57:50,839 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) [2022-07-21 04:57:50,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 04:57:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:51,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 990 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:57:51,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:57:51,179 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 04:57:51,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:57:51,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029666544] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:57:51,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:57:51,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-21 04:57:51,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893220147] [2022-07-21 04:57:51,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:57:51,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 04:57:51,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:57:51,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 04:57:51,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:57:51,181 INFO L87 Difference]: Start difference. First operand 317 states and 475 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 04:57:51,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:57:51,259 INFO L93 Difference]: Finished difference Result 669 states and 1017 transitions. [2022-07-21 04:57:51,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 04:57:51,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 99 [2022-07-21 04:57:51,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:57:51,273 INFO L225 Difference]: With dead ends: 669 [2022-07-21 04:57:51,273 INFO L226 Difference]: Without dead ends: 379 [2022-07-21 04:57:51,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:57:51,278 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 115 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 919 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 [2022-07-21 04:57:51,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 919 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:57:51,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-07-21 04:57:51,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 371. [2022-07-21 04:57:51,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 291 states have (on average 1.5326460481099657) internal successors, (446), 294 states have internal predecessors, (446), 61 states have call successors, (61), 18 states have call predecessors, (61), 18 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-07-21 04:57:51,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 567 transitions. [2022-07-21 04:57:51,320 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 567 transitions. Word has length 99 [2022-07-21 04:57:51,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:57:51,320 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 567 transitions. [2022-07-21 04:57:51,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 04:57:51,321 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 567 transitions. [2022-07-21 04:57:51,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-21 04:57:51,323 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:57:51,323 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] [2022-07-21 04:57:51,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 04:57:51,551 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 [2022-07-21 04:57:51,552 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:57:51,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:57:51,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1983768480, now seen corresponding path program 1 times [2022-07-21 04:57:51,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:57:51,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390541588] [2022-07-21 04:57:51,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:57:51,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:57:51,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:51,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:57:51,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:51,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:57:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:51,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:57:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:51,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 04:57:51,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:51,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 04:57:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:51,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 04:57:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:51,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 04:57:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:51,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 04:57:51,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:51,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:57:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:51,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 04:57:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:51,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 04:57:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:51,704 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 04:57:51,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:57:51,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390541588] [2022-07-21 04:57:51,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390541588] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:57:51,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185775378] [2022-07-21 04:57:51,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:57:51,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:57:51,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:57:51,707 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) [2022-07-21 04:57:51,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 04:57:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:51,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 997 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 04:57:51,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:57:52,033 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-21 04:57:52,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:57:52,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185775378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:57:52,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:57:52,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-07-21 04:57:52,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388161701] [2022-07-21 04:57:52,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:57:52,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:57:52,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:57:52,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:57:52,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:57:52,038 INFO L87 Difference]: Start difference. First operand 371 states and 567 transitions. Second operand has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-21 04:57:52,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:57:52,137 INFO L93 Difference]: Finished difference Result 733 states and 1124 transitions. [2022-07-21 04:57:52,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:57:52,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 100 [2022-07-21 04:57:52,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:57:52,141 INFO L225 Difference]: With dead ends: 733 [2022-07-21 04:57:52,141 INFO L226 Difference]: Without dead ends: 373 [2022-07-21 04:57:52,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:57:52,144 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 133 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1703 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 [2022-07-21 04:57:52,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 1703 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:57:52,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-07-21 04:57:52,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2022-07-21 04:57:52,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 292 states have (on average 1.5308219178082192) internal successors, (447), 296 states have internal predecessors, (447), 61 states have call successors, (61), 18 states have call predecessors, (61), 19 states have return successors, (62), 60 states have call predecessors, (62), 60 states have call successors, (62) [2022-07-21 04:57:52,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 570 transitions. [2022-07-21 04:57:52,168 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 570 transitions. Word has length 100 [2022-07-21 04:57:52,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:57:52,169 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 570 transitions. [2022-07-21 04:57:52,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-21 04:57:52,169 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 570 transitions. [2022-07-21 04:57:52,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-21 04:57:52,172 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:57:52,172 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] [2022-07-21 04:57:52,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 04:57:52,399 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 [2022-07-21 04:57:52,400 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:57:52,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:57:52,400 INFO L85 PathProgramCache]: Analyzing trace with hash 2002113072, now seen corresponding path program 1 times [2022-07-21 04:57:52,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:57:52,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370863213] [2022-07-21 04:57:52,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:57:52,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:57:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:52,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:57:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:52,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:57:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:52,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:57:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:52,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:57:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:52,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 04:57:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:52,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:57:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:52,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 04:57:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:52,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 04:57:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:52,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:57:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:52,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 04:57:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:52,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 04:57:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:52,569 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-21 04:57:52,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:57:52,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370863213] [2022-07-21 04:57:52,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370863213] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:57:52,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647146022] [2022-07-21 04:57:52,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:57:52,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:57:52,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:57:52,571 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) [2022-07-21 04:57:52,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 04:57:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:52,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 998 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 04:57:52,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:57:52,875 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-21 04:57:52,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:57:52,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647146022] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:57:52,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:57:52,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-21 04:57:52,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835180947] [2022-07-21 04:57:52,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:57:52,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:57:52,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:57:52,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:57:52,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:57:52,878 INFO L87 Difference]: Start difference. First operand 373 states and 570 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-21 04:57:52,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:57:52,962 INFO L93 Difference]: Finished difference Result 735 states and 1129 transitions. [2022-07-21 04:57:52,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:57:52,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 101 [2022-07-21 04:57:52,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:57:52,966 INFO L225 Difference]: With dead ends: 735 [2022-07-21 04:57:52,966 INFO L226 Difference]: Without dead ends: 375 [2022-07-21 04:57:52,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-21 04:57:52,969 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 132 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1692 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 [2022-07-21 04:57:52,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1692 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:57:52,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-07-21 04:57:53,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2022-07-21 04:57:53,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 293 states have (on average 1.52901023890785) internal successors, (448), 298 states have internal predecessors, (448), 61 states have call successors, (61), 18 states have call predecessors, (61), 20 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2022-07-21 04:57:53,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 576 transitions. [2022-07-21 04:57:53,005 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 576 transitions. Word has length 101 [2022-07-21 04:57:53,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:57:53,005 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 576 transitions. [2022-07-21 04:57:53,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-21 04:57:53,005 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 576 transitions. [2022-07-21 04:57:53,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-21 04:57:53,007 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:57:53,008 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] [2022-07-21 04:57:53,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-21 04:57:53,227 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 [2022-07-21 04:57:53,228 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:57:53,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:57:53,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1617125696, now seen corresponding path program 1 times [2022-07-21 04:57:53,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:57:53,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802590766] [2022-07-21 04:57:53,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:57:53,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:57:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:53,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:57:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:53,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:57:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:53,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:57:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:53,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:57:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:53,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:57:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:53,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 04:57:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:53,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 04:57:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:53,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:57:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:53,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 04:57:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:53,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 04:57:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:53,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 04:57:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:53,341 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 04:57:53,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:57:53,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802590766] [2022-07-21 04:57:53,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802590766] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:57:53,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:57:53,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:57:53,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260869035] [2022-07-21 04:57:53,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:57:53,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:57:53,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:57:53,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:57:53,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:57:53,345 INFO L87 Difference]: Start difference. First operand 375 states and 576 transitions. Second operand has 9 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-21 04:57:55,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:57:55,229 INFO L93 Difference]: Finished difference Result 901 states and 1392 transitions. [2022-07-21 04:57:55,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 04:57:55,230 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 102 [2022-07-21 04:57:55,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:57:55,234 INFO L225 Difference]: With dead ends: 901 [2022-07-21 04:57:55,234 INFO L226 Difference]: Without dead ends: 549 [2022-07-21 04:57:55,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 04:57:55,238 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 1121 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 2112 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 2551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 2112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 04:57:55,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 1459 Invalid, 2551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 2112 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 04:57:55,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-07-21 04:57:55,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 375. [2022-07-21 04:57:55,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 293 states have (on average 1.52901023890785) internal successors, (448), 298 states have internal predecessors, (448), 61 states have call successors, (61), 18 states have call predecessors, (61), 20 states have return successors, (66), 60 states have call predecessors, (66), 60 states have call successors, (66) [2022-07-21 04:57:55,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 575 transitions. [2022-07-21 04:57:55,275 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 575 transitions. Word has length 102 [2022-07-21 04:57:55,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:57:55,275 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 575 transitions. [2022-07-21 04:57:55,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-21 04:57:55,276 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 575 transitions. [2022-07-21 04:57:55,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-21 04:57:55,277 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:57:55,278 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] [2022-07-21 04:57:55,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 04:57:55,278 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:57:55,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:57:55,279 INFO L85 PathProgramCache]: Analyzing trace with hash 970357938, now seen corresponding path program 2 times [2022-07-21 04:57:55,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:57:55,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235580710] [2022-07-21 04:57:55,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:57:55,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:57:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:55,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:57:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:55,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:57:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:55,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:57:55,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:55,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:57:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:55,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:57:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:55,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:57:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:55,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:57:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:55,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 04:57:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:55,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 04:57:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:55,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 04:57:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:55,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 04:57:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:55,385 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 04:57:55,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:57:55,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235580710] [2022-07-21 04:57:55,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235580710] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:57:55,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:57:55,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:57:55,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707107280] [2022-07-21 04:57:55,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:57:55,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:57:55,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:57:55,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:57:55,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:57:55,387 INFO L87 Difference]: Start difference. First operand 375 states and 575 transitions. Second operand has 9 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-21 04:57:57,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:57:57,098 INFO L93 Difference]: Finished difference Result 903 states and 1395 transitions. [2022-07-21 04:57:57,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 04:57:57,099 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 103 [2022-07-21 04:57:57,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:57:57,103 INFO L225 Difference]: With dead ends: 903 [2022-07-21 04:57:57,104 INFO L226 Difference]: Without dead ends: 551 [2022-07-21 04:57:57,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 04:57:57,106 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 1116 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 2553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 04:57:57,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1134 Valid, 1460 Invalid, 2553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2109 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 04:57:57,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2022-07-21 04:57:57,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 377. [2022-07-21 04:57:57,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 294 states have (on average 1.5272108843537415) internal successors, (449), 300 states have internal predecessors, (449), 61 states have call successors, (61), 18 states have call predecessors, (61), 21 states have return successors, (68), 60 states have call predecessors, (68), 60 states have call successors, (68) [2022-07-21 04:57:57,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 578 transitions. [2022-07-21 04:57:57,139 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 578 transitions. Word has length 103 [2022-07-21 04:57:57,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:57:57,140 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 578 transitions. [2022-07-21 04:57:57,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-21 04:57:57,140 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 578 transitions. [2022-07-21 04:57:57,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-21 04:57:57,142 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:57:57,142 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] [2022-07-21 04:57:57,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 04:57:57,143 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:57:57,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:57:57,143 INFO L85 PathProgramCache]: Analyzing trace with hash 769278873, now seen corresponding path program 1 times [2022-07-21 04:57:57,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:57:57,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642749999] [2022-07-21 04:57:57,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:57:57,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:57:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:57,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:57:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:57,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:57:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:57,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:57:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:57,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:57:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:57,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:57:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:57,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:57:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:57,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:57:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:57,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 04:57:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:57,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 04:57:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:57,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 04:57:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:57,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 04:57:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:57,265 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 04:57:57,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:57:57,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642749999] [2022-07-21 04:57:57,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642749999] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:57:57,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:57:57,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:57:57,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822460] [2022-07-21 04:57:57,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:57:57,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:57:57,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:57:57,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:57:57,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:57:57,267 INFO L87 Difference]: Start difference. First operand 377 states and 578 transitions. Second operand has 9 states, 8 states have (on average 8.625) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-21 04:57:59,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:57:59,026 INFO L93 Difference]: Finished difference Result 903 states and 1394 transitions. [2022-07-21 04:57:59,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:57:59,027 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 104 [2022-07-21 04:57:59,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:57:59,030 INFO L225 Difference]: With dead ends: 903 [2022-07-21 04:57:59,030 INFO L226 Difference]: Without dead ends: 551 [2022-07-21 04:57:59,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-07-21 04:57:59,032 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 1119 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 2097 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 2543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 04:57:59,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1136 Valid, 1459 Invalid, 2543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2097 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 04:57:59,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2022-07-21 04:57:59,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 377. [2022-07-21 04:57:59,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 294 states have (on average 1.5272108843537415) internal successors, (449), 300 states have internal predecessors, (449), 61 states have call successors, (61), 18 states have call predecessors, (61), 21 states have return successors, (68), 60 states have call predecessors, (68), 60 states have call successors, (68) [2022-07-21 04:57:59,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 578 transitions. [2022-07-21 04:57:59,057 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 578 transitions. Word has length 104 [2022-07-21 04:57:59,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:57:59,057 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 578 transitions. [2022-07-21 04:57:59,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-21 04:57:59,057 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 578 transitions. [2022-07-21 04:57:59,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-21 04:57:59,059 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:57:59,059 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] [2022-07-21 04:57:59,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 04:57:59,059 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:57:59,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:57:59,060 INFO L85 PathProgramCache]: Analyzing trace with hash -184661285, now seen corresponding path program 1 times [2022-07-21 04:57:59,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:57:59,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359559381] [2022-07-21 04:57:59,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:57:59,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:57:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:59,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:57:59,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:59,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:57:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:59,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:57:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:59,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:57:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:59,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:57:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:59,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:57:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:59,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:57:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:59,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 04:57:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:59,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 04:57:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:59,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 04:57:59,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:59,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 04:57:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:57:59,183 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-21 04:57:59,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:57:59,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359559381] [2022-07-21 04:57:59,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359559381] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:57:59,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:57:59,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 04:57:59,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069566588] [2022-07-21 04:57:59,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:57:59,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 04:57:59,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:57:59,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 04:57:59,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:57:59,185 INFO L87 Difference]: Start difference. First operand 377 states and 578 transitions. Second operand has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-21 04:58:01,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:58:01,516 INFO L93 Difference]: Finished difference Result 901 states and 1389 transitions. [2022-07-21 04:58:01,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 04:58:01,516 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 104 [2022-07-21 04:58:01,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:58:01,519 INFO L225 Difference]: With dead ends: 901 [2022-07-21 04:58:01,519 INFO L226 Difference]: Without dead ends: 551 [2022-07-21 04:58:01,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-07-21 04:58:01,521 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 1236 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 3762 mSolverCounterSat, 490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1236 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 4252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 490 IncrementalHoareTripleChecker+Valid, 3762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:58:01,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1236 Valid, 1772 Invalid, 4252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [490 Valid, 3762 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-21 04:58:01,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2022-07-21 04:58:01,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 377. [2022-07-21 04:58:01,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 294 states have (on average 1.5272108843537415) internal successors, (449), 300 states have internal predecessors, (449), 61 states have call successors, (61), 18 states have call predecessors, (61), 21 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2022-07-21 04:58:01,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 577 transitions. [2022-07-21 04:58:01,551 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 577 transitions. Word has length 104 [2022-07-21 04:58:01,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:58:01,552 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 577 transitions. [2022-07-21 04:58:01,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-21 04:58:01,552 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 577 transitions. [2022-07-21 04:58:01,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-21 04:58:01,553 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:58:01,553 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] [2022-07-21 04:58:01,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 04:58:01,554 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:58:01,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:58:01,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1450940197, now seen corresponding path program 2 times [2022-07-21 04:58:01,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:58:01,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91784873] [2022-07-21 04:58:01,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:58:01,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:58:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:01,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:58:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:01,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:58:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:01,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:58:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:01,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:58:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:01,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:58:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:01,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:58:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:01,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 04:58:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:01,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 04:58:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:01,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 04:58:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:01,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 04:58:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:01,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 04:58:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:01,693 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-21 04:58:01,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:58:01,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91784873] [2022-07-21 04:58:01,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91784873] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:58:01,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:58:01,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 04:58:01,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367603160] [2022-07-21 04:58:01,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:58:01,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 04:58:01,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:58:01,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 04:58:01,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:58:01,695 INFO L87 Difference]: Start difference. First operand 377 states and 577 transitions. Second operand has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 8 states have internal predecessors, (73), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-21 04:58:03,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:58:03,830 INFO L93 Difference]: Finished difference Result 903 states and 1395 transitions. [2022-07-21 04:58:03,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 04:58:03,831 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 8 states have internal predecessors, (73), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 105 [2022-07-21 04:58:03,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:58:03,835 INFO L225 Difference]: With dead ends: 903 [2022-07-21 04:58:03,835 INFO L226 Difference]: Without dead ends: 553 [2022-07-21 04:58:03,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-07-21 04:58:03,837 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 1231 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 3803 mSolverCounterSat, 480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 4283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 480 IncrementalHoareTripleChecker+Valid, 3803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:58:03,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1231 Valid, 1773 Invalid, 4283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [480 Valid, 3803 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-21 04:58:03,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-07-21 04:58:03,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 379. [2022-07-21 04:58:03,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 295 states have (on average 1.5254237288135593) internal successors, (450), 302 states have internal predecessors, (450), 61 states have call successors, (61), 18 states have call predecessors, (61), 22 states have return successors, (72), 60 states have call predecessors, (72), 60 states have call successors, (72) [2022-07-21 04:58:03,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 583 transitions. [2022-07-21 04:58:03,865 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 583 transitions. Word has length 105 [2022-07-21 04:58:03,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:58:03,866 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 583 transitions. [2022-07-21 04:58:03,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 8 states have internal predecessors, (73), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-21 04:58:03,866 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 583 transitions. [2022-07-21 04:58:03,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-21 04:58:03,868 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:58:03,868 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] [2022-07-21 04:58:03,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 04:58:03,869 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:58:03,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:58:03,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1794783478, now seen corresponding path program 1 times [2022-07-21 04:58:03,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:58:03,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919664852] [2022-07-21 04:58:03,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:58:03,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:58:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:03,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:58:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:03,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:58:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:03,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:58:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:03,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:58:03,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:03,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:58:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:03,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:58:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:03,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 04:58:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:03,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 04:58:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:03,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:58:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:03,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 04:58:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:03,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 04:58:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:03,998 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-21 04:58:03,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:58:03,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919664852] [2022-07-21 04:58:03,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919664852] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:58:03,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565561086] [2022-07-21 04:58:03,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:58:03,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:58:04,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:58:04,001 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) [2022-07-21 04:58:04,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 04:58:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:04,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 1003 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:58:04,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:58:04,273 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:58:04,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 04:58:04,351 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:58:04,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565561086] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 04:58:04,351 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 04:58:04,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2022-07-21 04:58:04,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75730480] [2022-07-21 04:58:04,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 04:58:04,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 04:58:04,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:58:04,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 04:58:04,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:58:04,353 INFO L87 Difference]: Start difference. First operand 379 states and 583 transitions. Second operand has 15 states, 14 states have (on average 8.571428571428571) internal successors, (120), 11 states have internal predecessors, (120), 4 states have call successors, (27), 6 states have call predecessors, (27), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-21 04:58:07,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:58:07,461 INFO L93 Difference]: Finished difference Result 1632 states and 2703 transitions. [2022-07-21 04:58:07,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 04:58:07,462 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 8.571428571428571) internal successors, (120), 11 states have internal predecessors, (120), 4 states have call successors, (27), 6 states have call predecessors, (27), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 106 [2022-07-21 04:58:07,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:58:07,470 INFO L225 Difference]: With dead ends: 1632 [2022-07-21 04:58:07,470 INFO L226 Difference]: Without dead ends: 1284 [2022-07-21 04:58:07,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2022-07-21 04:58:07,474 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 3371 mSDsluCounter, 2768 mSDsCounter, 0 mSdLazyCounter, 5095 mSolverCounterSat, 1305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3373 SdHoareTripleChecker+Valid, 3528 SdHoareTripleChecker+Invalid, 6400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1305 IncrementalHoareTripleChecker+Valid, 5095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-21 04:58:07,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3373 Valid, 3528 Invalid, 6400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1305 Valid, 5095 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-21 04:58:07,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2022-07-21 04:58:07,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 732. [2022-07-21 04:58:07,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 584 states have (on average 1.577054794520548) internal successors, (921), 591 states have internal predecessors, (921), 125 states have call successors, (125), 18 states have call predecessors, (125), 22 states have return successors, (146), 124 states have call predecessors, (146), 124 states have call successors, (146) [2022-07-21 04:58:07,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1192 transitions. [2022-07-21 04:58:07,538 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1192 transitions. Word has length 106 [2022-07-21 04:58:07,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:58:07,538 INFO L495 AbstractCegarLoop]: Abstraction has 732 states and 1192 transitions. [2022-07-21 04:58:07,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 8.571428571428571) internal successors, (120), 11 states have internal predecessors, (120), 4 states have call successors, (27), 6 states have call predecessors, (27), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-21 04:58:07,539 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1192 transitions. [2022-07-21 04:58:07,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-21 04:58:07,542 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:58:07,542 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] [2022-07-21 04:58:07,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 04:58:07,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:58:07,751 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:58:07,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:58:07,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1263050880, now seen corresponding path program 1 times [2022-07-21 04:58:07,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:58:07,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978729669] [2022-07-21 04:58:07,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:58:07,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:58:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:07,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:58:07,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:07,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:58:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:07,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:58:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:07,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:58:07,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:07,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:58:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:07,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:58:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:07,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 04:58:07,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:07,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:58:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:07,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 04:58:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:07,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 04:58:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:07,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 04:58:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:07,914 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:58:07,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:58:07,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978729669] [2022-07-21 04:58:07,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978729669] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:58:07,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:58:07,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:58:07,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722294257] [2022-07-21 04:58:07,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:58:07,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:58:07,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:58:07,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:58:07,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:58:07,917 INFO L87 Difference]: Start difference. First operand 732 states and 1192 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 04:58:09,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:58:09,329 INFO L93 Difference]: Finished difference Result 1893 states and 3146 transitions. [2022-07-21 04:58:09,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:58:09,329 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2022-07-21 04:58:09,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:58:09,335 INFO L225 Difference]: With dead ends: 1893 [2022-07-21 04:58:09,335 INFO L226 Difference]: Without dead ends: 1239 [2022-07-21 04:58:09,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:58:09,339 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 1111 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 1615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 497 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 04:58:09,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1126 Valid, 1304 Invalid, 1615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [497 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 04:58:09,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2022-07-21 04:58:09,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1057. [2022-07-21 04:58:09,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 845 states have (on average 1.5928994082840238) internal successors, (1346), 852 states have internal predecessors, (1346), 189 states have call successors, (189), 18 states have call predecessors, (189), 22 states have return successors, (220), 188 states have call predecessors, (220), 188 states have call successors, (220) [2022-07-21 04:58:09,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1755 transitions. [2022-07-21 04:58:09,420 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1755 transitions. Word has length 109 [2022-07-21 04:58:09,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:58:09,421 INFO L495 AbstractCegarLoop]: Abstraction has 1057 states and 1755 transitions. [2022-07-21 04:58:09,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 04:58:09,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1755 transitions. [2022-07-21 04:58:09,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-21 04:58:09,425 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:58:09,425 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] [2022-07-21 04:58:09,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 04:58:09,426 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:58:09,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:58:09,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1528064206, now seen corresponding path program 1 times [2022-07-21 04:58:09,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:58:09,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814373490] [2022-07-21 04:58:09,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:58:09,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:58:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:09,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:58:09,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:09,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:58:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:09,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:58:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:09,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:58:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:09,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:58:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:09,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:58:09,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:09,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 04:58:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:09,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:58:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:09,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 04:58:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:09,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 04:58:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:09,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 04:58:09,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:09,512 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:58:09,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:58:09,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814373490] [2022-07-21 04:58:09,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814373490] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:58:09,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:58:09,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:58:09,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462087606] [2022-07-21 04:58:09,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:58:09,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:58:09,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:58:09,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:58:09,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:58:09,514 INFO L87 Difference]: Start difference. First operand 1057 states and 1755 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 04:58:10,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:58:10,733 INFO L93 Difference]: Finished difference Result 2698 states and 4530 transitions. [2022-07-21 04:58:10,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:58:10,733 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2022-07-21 04:58:10,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:58:10,742 INFO L225 Difference]: With dead ends: 2698 [2022-07-21 04:58:10,742 INFO L226 Difference]: Without dead ends: 1772 [2022-07-21 04:58:10,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:58:10,747 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 1109 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 1587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 488 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:58:10,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1124 Valid, 1323 Invalid, 1587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [488 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 04:58:10,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2022-07-21 04:58:10,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 1590. [2022-07-21 04:58:10,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1590 states, 1283 states have (on average 1.5993764614185502) internal successors, (2052), 1290 states have internal predecessors, (2052), 284 states have call successors, (284), 18 states have call predecessors, (284), 22 states have return successors, (315), 283 states have call predecessors, (315), 283 states have call successors, (315) [2022-07-21 04:58:10,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 2651 transitions. [2022-07-21 04:58:10,872 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 2651 transitions. Word has length 110 [2022-07-21 04:58:10,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:58:10,872 INFO L495 AbstractCegarLoop]: Abstraction has 1590 states and 2651 transitions. [2022-07-21 04:58:10,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 04:58:10,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 2651 transitions. [2022-07-21 04:58:10,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-21 04:58:10,879 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:58:10,879 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] [2022-07-21 04:58:10,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 04:58:10,880 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:58:10,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:58:10,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1955880974, now seen corresponding path program 1 times [2022-07-21 04:58:10,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:58:10,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856939774] [2022-07-21 04:58:10,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:58:10,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:58:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:10,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:58:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:10,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:58:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:10,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:58:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:10,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:58:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:10,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:58:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:10,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:58:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:10,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 04:58:10,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:10,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 04:58:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:10,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 04:58:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:10,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 04:58:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:10,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 04:58:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:10,976 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:58:10,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:58:10,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856939774] [2022-07-21 04:58:10,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856939774] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:58:10,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:58:10,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:58:10,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778330206] [2022-07-21 04:58:10,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:58:10,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:58:10,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:58:10,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:58:10,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:58:10,978 INFO L87 Difference]: Start difference. First operand 1590 states and 2651 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 04:58:12,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:58:12,220 INFO L93 Difference]: Finished difference Result 3905 states and 6616 transitions. [2022-07-21 04:58:12,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:58:12,221 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 111 [2022-07-21 04:58:12,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:58:12,254 INFO L225 Difference]: With dead ends: 3905 [2022-07-21 04:58:12,254 INFO L226 Difference]: Without dead ends: 2581 [2022-07-21 04:58:12,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:58:12,261 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 1107 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 1587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:58:12,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1122 Valid, 1291 Invalid, 1587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 04:58:12,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2581 states. [2022-07-21 04:58:12,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2581 to 2399. [2022-07-21 04:58:12,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2399 states, 1969 states have (on average 1.6043676993397664) internal successors, (3159), 1976 states have internal predecessors, (3159), 407 states have call successors, (407), 18 states have call predecessors, (407), 22 states have return successors, (454), 406 states have call predecessors, (454), 406 states have call successors, (454) [2022-07-21 04:58:12,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 4020 transitions. [2022-07-21 04:58:12,438 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 4020 transitions. Word has length 111 [2022-07-21 04:58:12,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:58:12,438 INFO L495 AbstractCegarLoop]: Abstraction has 2399 states and 4020 transitions. [2022-07-21 04:58:12,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 04:58:12,439 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 4020 transitions. [2022-07-21 04:58:12,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 04:58:12,448 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:58:12,448 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] [2022-07-21 04:58:12,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 04:58:12,448 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:58:12,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:58:12,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1874116179, now seen corresponding path program 1 times [2022-07-21 04:58:12,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:58:12,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719554414] [2022-07-21 04:58:12,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:58:12,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:58:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:12,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:58:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:12,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:58:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:12,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:58:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:12,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:58:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:12,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:58:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:12,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:58:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:12,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 04:58:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:12,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 04:58:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:12,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 04:58:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:12,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 04:58:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:12,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 04:58:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:12,536 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:58:12,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:58:12,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719554414] [2022-07-21 04:58:12,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719554414] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:58:12,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:58:12,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:58:12,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844736607] [2022-07-21 04:58:12,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:58:12,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:58:12,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:58:12,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:58:12,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:58:12,538 INFO L87 Difference]: Start difference. First operand 2399 states and 4020 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 04:58:13,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:58:13,806 INFO L93 Difference]: Finished difference Result 5789 states and 9876 transitions. [2022-07-21 04:58:13,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:58:13,806 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2022-07-21 04:58:13,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:58:13,828 INFO L225 Difference]: With dead ends: 5789 [2022-07-21 04:58:13,828 INFO L226 Difference]: Without dead ends: 3875 [2022-07-21 04:58:13,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:58:13,837 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 1105 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 1586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 480 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:58:13,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 1291 Invalid, 1586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [480 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 04:58:13,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3875 states. [2022-07-21 04:58:14,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3875 to 3693. [2022-07-21 04:58:14,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3693 states, 3084 states have (on average 1.6073281452658885) internal successors, (4957), 3091 states have internal predecessors, (4957), 586 states have call successors, (586), 18 states have call predecessors, (586), 22 states have return successors, (659), 585 states have call predecessors, (659), 585 states have call successors, (659) [2022-07-21 04:58:14,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3693 states to 3693 states and 6202 transitions. [2022-07-21 04:58:14,104 INFO L78 Accepts]: Start accepts. Automaton has 3693 states and 6202 transitions. Word has length 112 [2022-07-21 04:58:14,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:58:14,105 INFO L495 AbstractCegarLoop]: Abstraction has 3693 states and 6202 transitions. [2022-07-21 04:58:14,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 04:58:14,105 INFO L276 IsEmpty]: Start isEmpty. Operand 3693 states and 6202 transitions. [2022-07-21 04:58:14,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-21 04:58:14,116 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:58:14,116 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] [2022-07-21 04:58:14,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 04:58:14,116 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:58:14,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:58:14,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1724768054, now seen corresponding path program 1 times [2022-07-21 04:58:14,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:58:14,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969330475] [2022-07-21 04:58:14,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:58:14,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:58:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:14,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:58:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:14,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:58:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:14,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:58:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:14,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:58:14,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:14,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:58:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:14,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:58:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:14,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 04:58:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:14,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 04:58:14,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:14,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 04:58:14,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:14,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 04:58:14,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:14,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 04:58:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:14,239 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:58:14,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:58:14,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969330475] [2022-07-21 04:58:14,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969330475] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:58:14,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:58:14,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:58:14,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808246515] [2022-07-21 04:58:14,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:58:14,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:58:14,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:58:14,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:58:14,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:58:14,242 INFO L87 Difference]: Start difference. First operand 3693 states and 6202 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 04:58:15,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:58:15,663 INFO L93 Difference]: Finished difference Result 8892 states and 15240 transitions. [2022-07-21 04:58:15,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:58:15,664 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 113 [2022-07-21 04:58:15,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:58:15,693 INFO L225 Difference]: With dead ends: 8892 [2022-07-21 04:58:15,693 INFO L226 Difference]: Without dead ends: 6016 [2022-07-21 04:58:15,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:58:15,703 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 1103 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 493 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 493 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:58:15,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1118 Valid, 1322 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [493 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 04:58:15,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6016 states. [2022-07-21 04:58:16,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6016 to 5834. [2022-07-21 04:58:16,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5834 states, 4849 states have (on average 1.6009486492060219) internal successors, (7763), 4856 states have internal predecessors, (7763), 962 states have call successors, (962), 18 states have call predecessors, (962), 22 states have return successors, (1079), 961 states have call predecessors, (1079), 961 states have call successors, (1079) [2022-07-21 04:58:16,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5834 states to 5834 states and 9804 transitions. [2022-07-21 04:58:16,103 INFO L78 Accepts]: Start accepts. Automaton has 5834 states and 9804 transitions. Word has length 113 [2022-07-21 04:58:16,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:58:16,104 INFO L495 AbstractCegarLoop]: Abstraction has 5834 states and 9804 transitions. [2022-07-21 04:58:16,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 04:58:16,104 INFO L276 IsEmpty]: Start isEmpty. Operand 5834 states and 9804 transitions. [2022-07-21 04:58:16,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-21 04:58:16,114 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:58:16,115 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] [2022-07-21 04:58:16,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 04:58:16,115 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:58:16,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:58:16,115 INFO L85 PathProgramCache]: Analyzing trace with hash -824073833, now seen corresponding path program 1 times [2022-07-21 04:58:16,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:58:16,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400129283] [2022-07-21 04:58:16,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:58:16,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:58:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:16,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:58:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:16,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:58:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:16,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:58:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:16,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:58:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:16,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:58:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:16,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:58:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:16,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:58:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:16,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 04:58:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:16,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 04:58:16,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:16,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 04:58:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:16,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 04:58:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:16,191 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:58:16,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:58:16,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400129283] [2022-07-21 04:58:16,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400129283] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:58:16,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:58:16,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:58:16,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771660471] [2022-07-21 04:58:16,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:58:16,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:58:16,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:58:16,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:58:16,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:58:16,194 INFO L87 Difference]: Start difference. First operand 5834 states and 9804 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 04:58:17,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:58:17,792 INFO L93 Difference]: Finished difference Result 14509 states and 24853 transitions. [2022-07-21 04:58:17,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:58:17,799 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 114 [2022-07-21 04:58:17,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:58:17,837 INFO L225 Difference]: With dead ends: 14509 [2022-07-21 04:58:17,838 INFO L226 Difference]: Without dead ends: 9894 [2022-07-21 04:58:17,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:58:17,851 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 1101 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 488 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:58:17,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1116 Valid, 1329 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [488 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 04:58:17,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9894 states. [2022-07-21 04:58:18,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9894 to 9712. [2022-07-21 04:58:18,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9712 states, 8121 states have (on average 1.5985716044822067) internal successors, (12982), 8128 states have internal predecessors, (12982), 1568 states have call successors, (1568), 18 states have call predecessors, (1568), 22 states have return successors, (1763), 1567 states have call predecessors, (1763), 1567 states have call successors, (1763) [2022-07-21 04:58:18,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9712 states to 9712 states and 16313 transitions. [2022-07-21 04:58:18,409 INFO L78 Accepts]: Start accepts. Automaton has 9712 states and 16313 transitions. Word has length 114 [2022-07-21 04:58:18,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:58:18,410 INFO L495 AbstractCegarLoop]: Abstraction has 9712 states and 16313 transitions. [2022-07-21 04:58:18,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 04:58:18,411 INFO L276 IsEmpty]: Start isEmpty. Operand 9712 states and 16313 transitions. [2022-07-21 04:58:18,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-21 04:58:18,467 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:58:18,468 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] [2022-07-21 04:58:18,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 04:58:18,468 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:58:18,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:58:18,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1453587128, now seen corresponding path program 1 times [2022-07-21 04:58:18,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:58:18,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675395718] [2022-07-21 04:58:18,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:58:18,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:58:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:18,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:58:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:18,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:58:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:18,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:58:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:18,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:58:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:18,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:58:18,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:18,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:58:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:18,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:58:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:18,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:58:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:18,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 04:58:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:18,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 04:58:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:18,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 04:58:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:18,562 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:58:18,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:58:18,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675395718] [2022-07-21 04:58:18,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675395718] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:58:18,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:58:18,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:58:18,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541700445] [2022-07-21 04:58:18,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:58:18,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:58:18,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:58:18,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:58:18,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:58:18,565 INFO L87 Difference]: Start difference. First operand 9712 states and 16313 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 04:58:20,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:58:20,316 INFO L93 Difference]: Finished difference Result 25218 states and 43134 transitions. [2022-07-21 04:58:20,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:58:20,316 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 115 [2022-07-21 04:58:20,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:58:20,377 INFO L225 Difference]: With dead ends: 25218 [2022-07-21 04:58:20,378 INFO L226 Difference]: Without dead ends: 17207 [2022-07-21 04:58:20,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:58:20,406 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 1099 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:58:20,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 1333 Invalid, 1611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 1119 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 04:58:20,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17207 states. [2022-07-21 04:58:21,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17207 to 17025. [2022-07-21 04:58:21,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17025 states, 14231 states have (on average 1.5900498910828473) internal successors, (22628), 14238 states have internal predecessors, (22628), 2771 states have call successors, (2771), 18 states have call predecessors, (2771), 22 states have return successors, (3110), 2770 states have call predecessors, (3110), 2770 states have call successors, (3110) [2022-07-21 04:58:21,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17025 states to 17025 states and 28509 transitions. [2022-07-21 04:58:21,497 INFO L78 Accepts]: Start accepts. Automaton has 17025 states and 28509 transitions. Word has length 115 [2022-07-21 04:58:21,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:58:21,499 INFO L495 AbstractCegarLoop]: Abstraction has 17025 states and 28509 transitions. [2022-07-21 04:58:21,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 04:58:21,499 INFO L276 IsEmpty]: Start isEmpty. Operand 17025 states and 28509 transitions. [2022-07-21 04:58:21,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-21 04:58:21,518 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:58:21,518 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] [2022-07-21 04:58:21,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 04:58:21,519 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:58:21,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:58:21,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1261291992, now seen corresponding path program 1 times [2022-07-21 04:58:21,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:58:21,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776166393] [2022-07-21 04:58:21,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:58:21,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:58:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:21,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:58:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:21,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:58:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:21,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:58:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:21,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:58:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:21,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:58:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:21,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:58:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:21,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 04:58:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:21,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 04:58:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:21,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 04:58:21,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:21,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 04:58:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:21,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 04:58:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:21,610 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:58:21,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:58:21,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776166393] [2022-07-21 04:58:21,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776166393] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:58:21,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:58:21,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:58:21,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856275076] [2022-07-21 04:58:21,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:58:21,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:58:21,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:58:21,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:58:21,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:58:21,613 INFO L87 Difference]: Start difference. First operand 17025 states and 28509 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 04:58:24,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:58:24,130 INFO L93 Difference]: Finished difference Result 45194 states and 77147 transitions. [2022-07-21 04:58:24,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:58:24,131 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 116 [2022-07-21 04:58:24,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:58:24,270 INFO L225 Difference]: With dead ends: 45194 [2022-07-21 04:58:24,270 INFO L226 Difference]: Without dead ends: 30547 [2022-07-21 04:58:24,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:58:24,324 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 1097 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:58:24,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1112 Valid, 1294 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 04:58:24,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30547 states. [2022-07-21 04:58:26,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30547 to 30365. [2022-07-21 04:58:26,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30365 states, 25532 states have (on average 1.585892213692621) internal successors, (40491), 25539 states have internal predecessors, (40491), 4810 states have call successors, (4810), 18 states have call predecessors, (4810), 22 states have return successors, (5423), 4809 states have call predecessors, (5423), 4809 states have call successors, (5423) [2022-07-21 04:58:26,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30365 states to 30365 states and 50724 transitions. [2022-07-21 04:58:26,375 INFO L78 Accepts]: Start accepts. Automaton has 30365 states and 50724 transitions. Word has length 116 [2022-07-21 04:58:26,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:58:26,376 INFO L495 AbstractCegarLoop]: Abstraction has 30365 states and 50724 transitions. [2022-07-21 04:58:26,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 04:58:26,377 INFO L276 IsEmpty]: Start isEmpty. Operand 30365 states and 50724 transitions. [2022-07-21 04:58:26,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-21 04:58:26,396 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:58:26,396 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] [2022-07-21 04:58:26,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 04:58:26,396 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:58:26,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:58:26,397 INFO L85 PathProgramCache]: Analyzing trace with hash -997302246, now seen corresponding path program 1 times [2022-07-21 04:58:26,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:58:26,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350790053] [2022-07-21 04:58:26,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:58:26,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:58:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:26,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:58:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:26,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:58:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:26,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:58:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:26,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:58:26,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:26,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:58:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:26,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:58:26,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:26,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 04:58:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:26,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 04:58:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:26,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 04:58:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:26,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 04:58:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:26,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 04:58:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:26,483 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:58:26,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:58:26,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350790053] [2022-07-21 04:58:26,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350790053] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:58:26,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:58:26,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:58:26,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405844530] [2022-07-21 04:58:26,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:58:26,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:58:26,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:58:26,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:58:26,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:58:26,486 INFO L87 Difference]: Start difference. First operand 30365 states and 50724 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 04:58:29,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:58:29,931 INFO L93 Difference]: Finished difference Result 82931 states and 140671 transitions. [2022-07-21 04:58:29,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:58:29,932 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 117 [2022-07-21 04:58:29,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:58:30,371 INFO L225 Difference]: With dead ends: 82931 [2022-07-21 04:58:30,371 INFO L226 Difference]: Without dead ends: 55756 [2022-07-21 04:58:30,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:58:30,444 INFO L413 NwaCegarLoop]: 627 mSDtfsCounter, 1095 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 04:58:30,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1110 Valid, 1307 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 04:58:30,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55756 states. [2022-07-21 04:58:33,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55756 to 55574. [2022-07-21 04:58:33,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55574 states, 47026 states have (on average 1.5804448602900523) internal successors, (74322), 47033 states have internal predecessors, (74322), 8525 states have call successors, (8525), 18 states have call predecessors, (8525), 22 states have return successors, (9670), 8524 states have call predecessors, (9670), 8524 states have call successors, (9670) [2022-07-21 04:58:33,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55574 states to 55574 states and 92517 transitions. [2022-07-21 04:58:33,671 INFO L78 Accepts]: Start accepts. Automaton has 55574 states and 92517 transitions. Word has length 117 [2022-07-21 04:58:33,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:58:33,672 INFO L495 AbstractCegarLoop]: Abstraction has 55574 states and 92517 transitions. [2022-07-21 04:58:33,672 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, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 04:58:33,672 INFO L276 IsEmpty]: Start isEmpty. Operand 55574 states and 92517 transitions. [2022-07-21 04:58:33,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-21 04:58:33,696 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:58:33,696 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] [2022-07-21 04:58:33,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 04:58:33,696 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:58:33,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:58:33,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1497591688, now seen corresponding path program 1 times [2022-07-21 04:58:33,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:58:33,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028476409] [2022-07-21 04:58:33,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:58:33,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:58:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:33,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:58:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:33,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:58:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:33,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:58:33,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:33,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:58:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:33,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:58:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:33,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:58:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:33,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 04:58:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:33,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 04:58:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:33,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 04:58:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:33,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 04:58:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:33,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 04:58:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:33,772 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:58:33,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:58:33,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028476409] [2022-07-21 04:58:33,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028476409] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:58:33,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:58:33,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:58:33,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807492974] [2022-07-21 04:58:33,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:58:33,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:58:33,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:58:33,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:58:33,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:58:33,775 INFO L87 Difference]: Start difference. First operand 55574 states and 92517 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 04:58:38,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:58:38,944 INFO L93 Difference]: Finished difference Result 103987 states and 176657 transitions. [2022-07-21 04:58:38,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:58:38,944 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 118 [2022-07-21 04:58:38,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:58:39,593 INFO L225 Difference]: With dead ends: 103987 [2022-07-21 04:58:39,593 INFO L226 Difference]: Without dead ends: 103830 [2022-07-21 04:58:39,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:58:39,651 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 1093 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:58:39,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 1292 Invalid, 1593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 04:58:39,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103830 states. [2022-07-21 04:58:45,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103830 to 103648. [2022-07-21 04:58:45,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103648 states, 88301 states have (on average 1.573628837725507) internal successors, (138953), 88308 states have internal predecessors, (138953), 15324 states have call successors, (15324), 18 states have call predecessors, (15324), 22 states have return successors, (17515), 15323 states have call predecessors, (17515), 15323 states have call successors, (17515) [2022-07-21 04:58:45,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103648 states to 103648 states and 171792 transitions. [2022-07-21 04:58:45,544 INFO L78 Accepts]: Start accepts. Automaton has 103648 states and 171792 transitions. Word has length 118 [2022-07-21 04:58:45,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:58:45,545 INFO L495 AbstractCegarLoop]: Abstraction has 103648 states and 171792 transitions. [2022-07-21 04:58:45,545 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, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 04:58:45,545 INFO L276 IsEmpty]: Start isEmpty. Operand 103648 states and 171792 transitions. [2022-07-21 04:58:45,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-21 04:58:45,566 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:58:45,566 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] [2022-07-21 04:58:45,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 04:58:45,566 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:58:45,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:58:45,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1879456935, now seen corresponding path program 1 times [2022-07-21 04:58:45,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:58:45,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251112366] [2022-07-21 04:58:45,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:58:45,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:58:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:45,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:58:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:45,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:58:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:45,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:58:45,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:45,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:58:45,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:45,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:58:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:45,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:58:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:45,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 04:58:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:45,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 04:58:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:45,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 04:58:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:45,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 04:58:45,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:45,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 04:58:45,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:58:45,745 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:58:45,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:58:45,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251112366] [2022-07-21 04:58:45,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251112366] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:58:45,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:58:45,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-21 04:58:45,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590183574] [2022-07-21 04:58:45,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:58:45,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 04:58:45,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:58:45,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 04:58:45,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2022-07-21 04:58:45,748 INFO L87 Difference]: Start difference. First operand 103648 states and 171792 transitions. Second operand has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2022-07-21 04:59:01,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:59:01,570 INFO L93 Difference]: Finished difference Result 207764 states and 356274 transitions. [2022-07-21 04:59:01,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-21 04:59:01,571 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 119 [2022-07-21 04:59:01,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:59:02,734 INFO L225 Difference]: With dead ends: 207764 [2022-07-21 04:59:02,734 INFO L226 Difference]: Without dead ends: 207613 [2022-07-21 04:59:02,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1277 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=822, Invalid=3600, Unknown=0, NotChecked=0, Total=4422 [2022-07-21 04:59:02,823 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 5478 mSDsluCounter, 2504 mSDsCounter, 0 mSdLazyCounter, 10548 mSolverCounterSat, 3246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5478 SdHoareTripleChecker+Valid, 3225 SdHoareTripleChecker+Invalid, 13794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3246 IncrementalHoareTripleChecker+Valid, 10548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-07-21 04:59:02,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5478 Valid, 3225 Invalid, 13794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3246 Valid, 10548 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-07-21 04:59:02,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207613 states.